merge multiple repositories into an existing monorepo

- merged using: 'monorepo_add.sh services-chat:services/chat' - see https://github.com/shopsys/monorepo-tools
2024-11-14 20:40:17 -05:00 · 2021-08-05 08:32:24 +01:00 · 2021-08-05 08:32:24 +01:00 · baf613bc42
commit baf613bc42
parent 9d4b767dda 3da1db1ab9
35 changed files with 9063 additions and 0 deletions
--- a/services/chat/.dockerignore
+++ b/services/chat/.dockerignore
@ -0,0 +1,7 @@
+node_modules/*
+gitrev
+.git
+.gitignore
+.npm
+.nvmrc
+nodemon.json
--- a/services/chat/.eslintrc
+++ b/services/chat/.eslintrc
@ -0,0 +1,86 @@
+// this file was auto-generated, do not edit it directly.
+// instead run bin/update_build_scripts from
+// https://github.com/sharelatex/sharelatex-dev-environment
+{
+  "extends": [
+    "eslint:recommended",
+    "standard",
+    "prettier"
+  ],
+  "parserOptions": {
+    "ecmaVersion": 2018
+  },
+  "plugins": [
+    "mocha",
+    "chai-expect",
+    "chai-friendly"
+  ],
+  "env": {
+    "node": true,
+    "mocha": true
+  },
+  "rules": {
+    // TODO(das7pad): remove overrides after fixing all the violations manually (https://github.com/overleaf/issues/issues/3882#issuecomment-878999671)
+    // START of temporary overrides
+    "array-callback-return": "off",
+    "no-dupe-else-if": "off",
+    "no-var": "off",
+    "no-empty": "off",
+    "node/handle-callback-err": "off",
+    "no-loss-of-precision": "off",
+    "node/no-callback-literal": "off",
+    "node/no-path-concat": "off",
+    "prefer-regex-literals": "off",
+    // END of temporary overrides
+
+    // Swap the no-unused-expressions rule with a more chai-friendly one
+    "no-unused-expressions": 0,
+    "chai-friendly/no-unused-expressions": "error",
+
+    // Do not allow importing of implicit dependencies.
+    "import/no-extraneous-dependencies": "error"
+  },
+  "overrides": [
+    {
+      // Test specific rules
+      "files": ["test/**/*.js"],
+      "globals": {
+        "expect": true
+      },
+      "rules": {
+        // mocha-specific rules
+        "mocha/handle-done-callback": "error",
+        "mocha/no-exclusive-tests": "error",
+        "mocha/no-global-tests": "error",
+        "mocha/no-identical-title": "error",
+        "mocha/no-nested-tests": "error",
+        "mocha/no-pending-tests": "error",
+        "mocha/no-skipped-tests": "error",
+        "mocha/no-mocha-arrows": "error",
+
+        // chai-specific rules
+        "chai-expect/missing-assertion": "error",
+        "chai-expect/terminating-properties": "error",
+
+        // prefer-arrow-callback applies to all callbacks, not just ones in mocha tests.
+        // we don't enforce this at the top-level - just in tests to manage `this` scope
+        // based on mocha's context mechanism
+        "mocha/prefer-arrow-callback": "error"
+      }
+    },
+    {
+      // Backend specific rules
+      "files": ["app/**/*.js", "app.js", "index.js"],
+      "rules": {
+        // don't allow console.log in backend code
+        "no-console": "error",
+
+        // Do not allow importing of implicit dependencies.
+        "import/no-extraneous-dependencies": ["error", {
+          // Do not allow importing of devDependencies.
+          "devDependencies": false
+        }]
+      }
+    }
+  ]
+}
--- a/services/chat/.github/ISSUE_TEMPLATE.md
+++ b/services/chat/.github/ISSUE_TEMPLATE.md
@ -0,0 +1,38 @@
+<!-- BUG REPORT TEMPLATE -->
+
+## Steps to Reproduce
+<!-- Describe the steps leading up to when / where you found the bug. -->
+<!-- Screenshots may be helpful here. -->
+
+1.
+2.
+3.
+
+## Expected Behaviour
+<!-- What should have happened when you completed the steps above? -->
+
+## Observed Behaviour
+<!-- What actually happened when you completed the steps above? -->
+<!-- Screenshots may be helpful here. -->
+
+## Context
+<!-- How has this issue affected you? What were you trying to accomplish? -->
+
+## Technical Info
+<!-- Provide any technical details that may be applicable (or N/A if not applicable). -->
+
+* URL:
+* Browser Name and version:
+* Operating System and version (desktop or mobile):
+* Signed in as:
+* Project and/or file:
+
+## Analysis
+<!--- Optionally, document investigation of / suggest a fix for the bug, e.g. 'comes from this line / commit' -->
+
+## Who Needs to Know?
+<!-- If you want to bring this to the attention of particular people, @-mention them below. -->
+<!-- If a user reported this bug and should be notified when it is fixed, provide the Front conversation link. -->
+
+-
+-
--- a/services/chat/.github/PULL_REQUEST_TEMPLATE.md
+++ b/services/chat/.github/PULL_REQUEST_TEMPLATE.md
@ -0,0 +1,46 @@
+
+<!-- Please review https://github.com/overleaf/developer-manual/blob/master/code/pr-guidance.md for guidance on what is expected in each section. -->
+
+### Description
+
+
+
+#### Screenshots
+
+
+
+#### Related Issues / PRs
+
+
+
+### Review
+
+
+
+#### Potential Impact
+
+
+
+#### Manual Testing Performed
+
+- [ ]
+- [ ]
+
+#### Accessibility
+
+
+
+### Deployment
+
+
+
+#### Deployment Checklist
+
+- [ ] Update documentation not included in the PR (if any)
+- [ ]
+
+#### Metrics and Monitoring
+
+
+
+#### Who Needs to Know?
--- a/services/chat/.github/dependabot.yml
+++ b/services/chat/.github/dependabot.yml
@ -0,0 +1,23 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+    pull-request-branch-name:
+      # Separate sections of the branch name with a hyphen
+      # Docker images use the branch name and do not support slashes in tags
+      # https://github.com/overleaf/google-ops/issues/822
+      # https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#pull-request-branch-nameseparator
+      separator: "-"
+
+    # Block informal upgrades -- security upgrades use a separate queue.
+    # https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#open-pull-requests-limit
+    open-pull-requests-limit: 0
+
+    # currently assign team-magma to all dependabot PRs - this may change in
+    # future if we reorganise teams
+    labels:
+      - "dependencies"
+      - "type:maintenance"
--- a/services/chat/.gitignore
+++ b/services/chat/.gitignore
@ -0,0 +1,12 @@
+**.swp
+
+public/build/
+
+node_modules/
+
+plato/
+
+**/*.map
+
+# managed by dev-environment$ bin/update_build_scripts
+.npmrc
--- a/services/chat/.nvmrc
+++ b/services/chat/.nvmrc
@ -0,0 +1 @@
+12.22.3
--- a/services/chat/.prettierrc
+++ b/services/chat/.prettierrc
@ -0,0 +1,11 @@
+# This file was auto-generated, do not edit it directly.
+# Instead run bin/update_build_scripts from
+# https://github.com/sharelatex/sharelatex-dev-environment
+{
+  "arrowParens": "avoid",
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "useTabs": false
+}
--- a/services/chat/Dockerfile
+++ b/services/chat/Dockerfile
@ -0,0 +1,23 @@
+# This file was auto-generated, do not edit it directly.
+# Instead run bin/update_build_scripts from
+# https://github.com/sharelatex/sharelatex-dev-environment
+
+FROM node:12.22.3 as base
+
+WORKDIR /app
+
+FROM base as app
+
+#wildcard as some files may not be in all repos
+COPY package*.json npm-shrink*.json /app/
+
+RUN npm ci --quiet
+
+COPY . /app
+
+FROM base
+
+COPY --from=app /app /app
+USER node
+
+CMD ["node", "--expose-gc", "app.js"]
--- a/services/chat/LICENSE
+++ b/services/chat/LICENSE
@ -0,0 +1,662 @@
+
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+software and other kinds of works, specifically designed to ensure
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+them if you wish), that you receive source code or can get it if you
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+free programs, and that you know you can do these things.
+
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+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
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+ensure that, in such cases, the modified source code becomes available
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+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
--- a/services/chat/Makefile
+++ b/services/chat/Makefile
@ -0,0 +1,90 @@
+# This file was auto-generated, do not edit it directly.
+# Instead run bin/update_build_scripts from
+# https://github.com/sharelatex/sharelatex-dev-environment
+
+BUILD_NUMBER ?= local
+BRANCH_NAME ?= $(shell git rev-parse --abbrev-ref HEAD)
+PROJECT_NAME = chat
+BUILD_DIR_NAME = $(shell pwd | xargs basename | tr -cd '[a-zA-Z0-9_.\-]')
+
+DOCKER_COMPOSE_FLAGS ?= -f docker-compose.yml
+DOCKER_COMPOSE := BUILD_NUMBER=$(BUILD_NUMBER) \
+	BRANCH_NAME=$(BRANCH_NAME) \
+	PROJECT_NAME=$(PROJECT_NAME) \
+	MOCHA_GREP=${MOCHA_GREP} \
+	docker-compose ${DOCKER_COMPOSE_FLAGS}
+
+DOCKER_COMPOSE_TEST_ACCEPTANCE = \
+	COMPOSE_PROJECT_NAME=test_acceptance_$(BUILD_DIR_NAME) $(DOCKER_COMPOSE)
+
+DOCKER_COMPOSE_TEST_UNIT = \
+	COMPOSE_PROJECT_NAME=test_unit_$(BUILD_DIR_NAME) $(DOCKER_COMPOSE)
+
+clean:
+	-docker rmi ci/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+	-docker rmi gcr.io/overleaf-ops/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+	-$(DOCKER_COMPOSE_TEST_UNIT) down --rmi local
+	-$(DOCKER_COMPOSE_TEST_ACCEPTANCE) down --rmi local
+
+format:
+	$(DOCKER_COMPOSE) run --rm test_unit npm run --silent format
+
+format_fix:
+	$(DOCKER_COMPOSE) run --rm test_unit npm run --silent format:fix
+
+lint:
+	$(DOCKER_COMPOSE) run --rm test_unit npm run --silent lint
+
+test: format lint test_unit test_acceptance
+
+test_unit:
+ifneq (,$(wildcard test/unit))
+	$(DOCKER_COMPOSE_TEST_UNIT) run --rm test_unit
+	$(MAKE) test_unit_clean
+endif
+
+test_clean: test_unit_clean
+test_unit_clean:
+ifneq (,$(wildcard test/unit))
+	$(DOCKER_COMPOSE_TEST_UNIT) down -v -t 0
+endif
+
+test_acceptance: test_acceptance_clean test_acceptance_pre_run test_acceptance_run
+	$(MAKE) test_acceptance_clean
+
+test_acceptance_debug: test_acceptance_clean test_acceptance_pre_run test_acceptance_run_debug
+	$(MAKE) test_acceptance_clean
+
+test_acceptance_run:
+ifneq (,$(wildcard test/acceptance))
+	$(DOCKER_COMPOSE_TEST_ACCEPTANCE) run --rm test_acceptance
+endif
+
+test_acceptance_run_debug:
+ifneq (,$(wildcard test/acceptance))
+	$(DOCKER_COMPOSE_TEST_ACCEPTANCE) run -p 127.0.0.9:19999:19999 --rm test_acceptance npm run test:acceptance -- --inspect=0.0.0.0:19999 --inspect-brk
+endif
+
+test_clean: test_acceptance_clean
+test_acceptance_clean:
+	$(DOCKER_COMPOSE_TEST_ACCEPTANCE) down -v -t 0
+
+test_acceptance_pre_run:
+ifneq (,$(wildcard test/acceptance/js/scripts/pre-run))
+	$(DOCKER_COMPOSE_TEST_ACCEPTANCE) run --rm test_acceptance test/acceptance/js/scripts/pre-run
+endif
+
+build:
+	docker build --pull --tag ci/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER) \
+		--tag gcr.io/overleaf-ops/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER) \
+		.
+
+tar:
+	$(DOCKER_COMPOSE) up tar
+
+publish:
+
+	docker push $(DOCKER_REPO)/$(PROJECT_NAME):$(BRANCH_NAME)-$(BUILD_NUMBER)
+
+
+.PHONY: clean test test_unit test_acceptance test_clean build publish
--- a/services/chat/README.md
+++ b/services/chat/README.md
@ -0,0 +1,11 @@
+overleaf/chat
+===============
+
+The backend API that powers the chat service in ShareLaTeX
+
+License
+-------
+
+The code in this repository is released under the GNU AFFERO GENERAL PUBLIC LICENSE, version 3. A copy can be found in the `LICENSE` file.
+
+Copyright (c) Overleaf, 2014-2019.
--- a/services/chat/app.js
+++ b/services/chat/app.js
@ -0,0 +1,49 @@
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS103: Rewrite code to no longer use __guard__
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const logger = require('logger-sharelatex')
+const settings = require('@overleaf/settings')
+
+const mongodb = require('./app/js/mongodb')
+const Server = require('./app/js/server')
+
+if (!module.parent) {
+  // Called directly
+  const port =
+    __guard__(
+      settings.internal != null ? settings.internal.chat : undefined,
+      x => x.port
+    ) || 3010
+  const host =
+    __guard__(
+      settings.internal != null ? settings.internal.chat : undefined,
+      x1 => x1.host
+    ) || 'localhost'
+  mongodb
+    .waitForDb()
+    .then(() => {
+      Server.server.listen(port, host, function (err) {
+        if (err) {
+          logger.fatal({ err }, `Cannot bind to ${host}:${port}. Exiting.`)
+          process.exit(1)
+        }
+        return logger.info(`Chat starting up, listening on ${host}:${port}`)
+      })
+    })
+    .catch(err => {
+      logger.fatal({ err }, 'Cannot connect to mongo. Exiting.')
+      process.exit(1)
+    })
+}
+
+module.exports = Server.server
+
+function __guard__(value, transform) {
+  return typeof value !== 'undefined' && value !== null
+    ? transform(value)
+    : undefined
+}
--- a/services/chat/app/js/Features/Messages/MessageFormatter.js
+++ b/services/chat/app/js/Features/Messages/MessageFormatter.js
@ -0,0 +1,80 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS101: Remove unnecessary use of Array.from
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let MessageFormatter
+module.exports = MessageFormatter = {
+  formatMessageForClientSide(message) {
+    if (message._id != null) {
+      message.id = message._id.toString()
+      delete message._id
+    }
+    const formattedMessage = {
+      id: message.id,
+      content: message.content,
+      timestamp: message.timestamp,
+      user_id: message.user_id,
+    }
+    if (message.edited_at != null) {
+      formattedMessage.edited_at = message.edited_at
+    }
+    return formattedMessage
+  },
+
+  formatMessagesForClientSide(messages) {
+    return Array.from(messages).map(message =>
+      this.formatMessageForClientSide(message)
+    )
+  },
+
+  groupMessagesByThreads(rooms, messages) {
+    let room, thread
+    const rooms_by_id = {}
+    for (room of Array.from(rooms)) {
+      rooms_by_id[room._id.toString()] = room
+    }
+
+    const threads = {}
+    const getThread = function (room) {
+      const thread_id = room.thread_id.toString()
+      if (threads[thread_id] != null) {
+        return threads[thread_id]
+      } else {
+        const thread = { messages: [] }
+        if (room.resolved != null) {
+          thread.resolved = true
+          thread.resolved_at = room.resolved.ts
+          thread.resolved_by_user_id = room.resolved.user_id
+        }
+        threads[thread_id] = thread
+        return thread
+      }
+    }
+
+    for (const message of Array.from(messages)) {
+      room = rooms_by_id[message.room_id.toString()]
+      if (room != null) {
+        thread = getThread(room)
+        thread.messages.push(
+          MessageFormatter.formatMessageForClientSide(message)
+        )
+      }
+    }
+
+    for (const thread_id in threads) {
+      thread = threads[thread_id]
+      thread.messages.sort((a, b) => a.timestamp - b.timestamp)
+    }
+
+    return threads
+  },
+}
--- a/services/chat/app/js/Features/Messages/MessageHttpController.js
+++ b/services/chat/app/js/Features/Messages/MessageHttpController.js
@ -0,0 +1,273 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let MessageHttpController
+const logger = require('logger-sharelatex')
+const metrics = require('@overleaf/metrics')
+const MessageManager = require('./MessageManager')
+const MessageFormatter = require('./MessageFormatter')
+const ThreadManager = require('../Threads/ThreadManager')
+const { ObjectId } = require('../../mongodb')
+
+module.exports = MessageHttpController = {
+  DEFAULT_MESSAGE_LIMIT: 50,
+  MAX_MESSAGE_LENGTH: 10 * 1024, // 10kb, about 1,500 words
+
+  getGlobalMessages(req, res, next) {
+    return MessageHttpController._getMessages(
+      ThreadManager.GLOBAL_THREAD,
+      req,
+      res,
+      next
+    )
+  },
+
+  sendGlobalMessage(req, res, next) {
+    return MessageHttpController._sendMessage(
+      ThreadManager.GLOBAL_THREAD,
+      req,
+      res,
+      next
+    )
+  },
+
+  sendThreadMessage(req, res, next) {
+    return MessageHttpController._sendMessage(
+      req.params.thread_id,
+      req,
+      res,
+      next
+    )
+  },
+
+  getAllThreads(req, res, next) {
+    const { project_id } = req.params
+    logger.log({ project_id }, 'getting all threads')
+    return ThreadManager.findAllThreadRooms(
+      project_id,
+      function (error, rooms) {
+        if (error != null) {
+          return next(error)
+        }
+        const room_ids = rooms.map(r => r._id)
+        return MessageManager.findAllMessagesInRooms(
+          room_ids,
+          function (error, messages) {
+            if (error != null) {
+              return next(error)
+            }
+            const threads = MessageFormatter.groupMessagesByThreads(
+              rooms,
+              messages
+            )
+            return res.json(threads)
+          }
+        )
+      }
+    )
+  },
+
+  resolveThread(req, res, next) {
+    const { project_id, thread_id } = req.params
+    const { user_id } = req.body
+    logger.log({ user_id, project_id, thread_id }, 'marking thread as resolved')
+    return ThreadManager.resolveThread(
+      project_id,
+      thread_id,
+      user_id,
+      function (error) {
+        if (error != null) {
+          return next(error)
+        }
+        return res.sendStatus(204)
+      }
+    )
+  }, // No content
+
+  reopenThread(req, res, next) {
+    const { project_id, thread_id } = req.params
+    logger.log({ project_id, thread_id }, 'reopening thread')
+    return ThreadManager.reopenThread(project_id, thread_id, function (error) {
+      if (error != null) {
+        return next(error)
+      }
+      return res.sendStatus(204)
+    })
+  }, // No content
+
+  deleteThread(req, res, next) {
+    const { project_id, thread_id } = req.params
+    logger.log({ project_id, thread_id }, 'deleting thread')
+    return ThreadManager.deleteThread(
+      project_id,
+      thread_id,
+      function (error, room_id) {
+        if (error != null) {
+          return next(error)
+        }
+        return MessageManager.deleteAllMessagesInRoom(
+          room_id,
+          function (error) {
+            if (error != null) {
+              return next(error)
+            }
+            return res.sendStatus(204)
+          }
+        )
+      }
+    )
+  }, // No content
+
+  editMessage(req, res, next) {
+    const { content } = req != null ? req.body : undefined
+    const { project_id, thread_id, message_id } = req.params
+    logger.log(
+      { project_id, thread_id, message_id, content },
+      'editing message'
+    )
+    return ThreadManager.findOrCreateThread(
+      project_id,
+      thread_id,
+      function (error, room) {
+        if (error != null) {
+          return next(error)
+        }
+        return MessageManager.updateMessage(
+          room._id,
+          message_id,
+          content,
+          Date.now(),
+          function (error) {
+            if (error != null) {
+              return next(error)
+            }
+            return res.sendStatus(204)
+          }
+        )
+      }
+    )
+  },
+
+  deleteMessage(req, res, next) {
+    const { project_id, thread_id, message_id } = req.params
+    logger.log({ project_id, thread_id, message_id }, 'deleting message')
+    return ThreadManager.findOrCreateThread(
+      project_id,
+      thread_id,
+      function (error, room) {
+        if (error != null) {
+          return next(error)
+        }
+        return MessageManager.deleteMessage(
+          room._id,
+          message_id,
+          function (error, message) {
+            if (error != null) {
+              return next(error)
+            }
+            return res.sendStatus(204)
+          }
+        )
+      }
+    )
+  },
+
+  _sendMessage(client_thread_id, req, res, next) {
+    const { user_id, content } = req != null ? req.body : undefined
+    const { project_id } = req.params
+    if (!ObjectId.isValid(user_id)) {
+      return res.status(400).send('Invalid user_id')
+    }
+    if (content == null) {
+      return res.status(400).send('No content provided')
+    }
+    if (content.length > this.MAX_MESSAGE_LENGTH) {
+      return res
+        .status(400)
+        .send(`Content too long (> ${this.MAX_MESSAGE_LENGTH} bytes)`)
+    }
+    logger.log(
+      { client_thread_id, project_id, user_id, content },
+      'new message received'
+    )
+    return ThreadManager.findOrCreateThread(
+      project_id,
+      client_thread_id,
+      function (error, thread) {
+        if (error != null) {
+          return next(error)
+        }
+        return MessageManager.createMessage(
+          thread._id,
+          user_id,
+          content,
+          Date.now(),
+          function (error, message) {
+            if (error != null) {
+              return next(error)
+            }
+            message = MessageFormatter.formatMessageForClientSide(message)
+            message.room_id = project_id
+            return res.status(201).send(message)
+          }
+        )
+      }
+    )
+  },
+
+  _getMessages(client_thread_id, req, res, next) {
+    let before, limit
+    const { project_id } = req.params
+    if ((req.query != null ? req.query.before : undefined) != null) {
+      before = parseInt(req.query.before, 10)
+    } else {
+      before = null
+    }
+    if ((req.query != null ? req.query.limit : undefined) != null) {
+      limit = parseInt(req.query.limit, 10)
+    } else {
+      limit = MessageHttpController.DEFAULT_MESSAGE_LIMIT
+    }
+    logger.log(
+      { limit, before, project_id, client_thread_id },
+      'get message request received'
+    )
+    return ThreadManager.findOrCreateThread(
+      project_id,
+      client_thread_id,
+      function (error, thread) {
+        if (error != null) {
+          return next(error)
+        }
+        const thread_object_id = thread._id
+        logger.log(
+          { limit, before, project_id, client_thread_id, thread_object_id },
+          'found or created thread'
+        )
+        return MessageManager.getMessages(
+          thread_object_id,
+          limit,
+          before,
+          function (error, messages) {
+            if (error != null) {
+              return next(error)
+            }
+            messages = MessageFormatter.formatMessagesForClientSide(messages)
+            logger.log({ project_id, messages }, 'got messages')
+            return res.status(200).send(messages)
+          }
+        )
+      }
+    )
+  },
+}
--- a/services/chat/app/js/Features/Messages/MessageManager.js
+++ b/services/chat/app/js/Features/Messages/MessageManager.js
@ -0,0 +1,137 @@
+/* eslint-disable
+    camelcase,
+    handle-callback-err,
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let MessageManager
+const { db, ObjectId } = require('../../mongodb')
+const metrics = require('@overleaf/metrics')
+const logger = require('logger-sharelatex')
+
+module.exports = MessageManager = {
+  createMessage(room_id, user_id, content, timestamp, callback) {
+    if (callback == null) {
+      callback = function (error, message) {}
+    }
+    let newMessageOpts = {
+      content,
+      room_id,
+      user_id,
+      timestamp,
+    }
+    newMessageOpts = this._ensureIdsAreObjectIds(newMessageOpts)
+    db.messages.insertOne(newMessageOpts, function (error, confirmation) {
+      if (error) {
+        return callback(error)
+      }
+      newMessageOpts._id = confirmation.insertedId
+      callback(null, newMessageOpts)
+    })
+  },
+
+  getMessages(room_id, limit, before, callback) {
+    if (callback == null) {
+      callback = function (error, messages) {}
+    }
+    let query = { room_id }
+    if (before != null) {
+      query.timestamp = { $lt: before }
+    }
+    query = this._ensureIdsAreObjectIds(query)
+    db.messages
+      .find(query)
+      .sort({ timestamp: -1 })
+      .limit(limit)
+      .toArray(callback)
+  },
+
+  findAllMessagesInRooms(room_ids, callback) {
+    if (callback == null) {
+      callback = function (error, messages) {}
+    }
+    db.messages
+      .find({
+        room_id: { $in: room_ids },
+      })
+      .toArray(callback)
+  },
+
+  deleteAllMessagesInRoom(room_id, callback) {
+    if (callback == null) {
+      callback = function (error) {}
+    }
+    db.messages.deleteMany(
+      {
+        room_id,
+      },
+      callback
+    )
+  },
+
+  updateMessage(room_id, message_id, content, timestamp, callback) {
+    if (callback == null) {
+      callback = function (error, message) {}
+    }
+    const query = this._ensureIdsAreObjectIds({
+      _id: message_id,
+      room_id,
+    })
+    db.messages.updateOne(
+      query,
+      {
+        $set: {
+          content,
+          edited_at: timestamp,
+        },
+      },
+      callback
+    )
+  },
+
+  deleteMessage(room_id, message_id, callback) {
+    if (callback == null) {
+      callback = function (error) {}
+    }
+    const query = this._ensureIdsAreObjectIds({
+      _id: message_id,
+      room_id,
+    })
+    db.messages.deleteOne(query, callback)
+  },
+
+  _ensureIdsAreObjectIds(query) {
+    if (query.user_id != null && !(query.user_id instanceof ObjectId)) {
+      query.user_id = ObjectId(query.user_id)
+    }
+    if (query.room_id != null && !(query.room_id instanceof ObjectId)) {
+      query.room_id = ObjectId(query.room_id)
+    }
+    if (query._id != null && !(query._id instanceof ObjectId)) {
+      query._id = ObjectId(query._id)
+    }
+    return query
+  },
+}
+;[
+  'createMessage',
+  'getMessages',
+  'findAllMessagesInRooms',
+  'updateMessage',
+  'deleteMessage',
+].map(method =>
+  metrics.timeAsyncMethod(
+    MessageManager,
+    method,
+    'mongo.MessageManager',
+    logger
+  )
+)
--- a/services/chat/app/js/Features/Threads/ThreadManager.js
+++ b/services/chat/app/js/Features/Threads/ThreadManager.js
@ -0,0 +1,155 @@
+/* eslint-disable
+    camelcase,
+    handle-callback-err,
+    max-len,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let ThreadManager
+const { db, ObjectId } = require('../../mongodb')
+const logger = require('logger-sharelatex')
+const metrics = require('@overleaf/metrics')
+
+module.exports = ThreadManager = {
+  GLOBAL_THREAD: 'GLOBAL',
+
+  findOrCreateThread(project_id, thread_id, callback) {
+    let query, update
+    if (callback == null) {
+      callback = function (error, thread) {}
+    }
+    project_id = ObjectId(project_id.toString())
+    if (thread_id !== ThreadManager.GLOBAL_THREAD) {
+      thread_id = ObjectId(thread_id.toString())
+    }
+
+    if (thread_id === ThreadManager.GLOBAL_THREAD) {
+      query = {
+        project_id,
+        thread_id: { $exists: false },
+      }
+      update = {
+        project_id,
+      }
+    } else {
+      query = {
+        project_id,
+        thread_id,
+      }
+      update = {
+        project_id,
+        thread_id,
+      }
+    }
+
+    db.rooms.updateOne(
+      query,
+      { $set: update },
+      { upsert: true },
+      function (error) {
+        if (error != null) {
+          return callback(error)
+        }
+        db.rooms.findOne(query, callback)
+      }
+    )
+  },
+
+  findAllThreadRooms(project_id, callback) {
+    if (callback == null) {
+      callback = function (error, rooms) {}
+    }
+    db.rooms
+      .find(
+        {
+          project_id: ObjectId(project_id.toString()),
+          thread_id: { $exists: true },
+        },
+        {
+          thread_id: 1,
+          resolved: 1,
+        }
+      )
+      .toArray(callback)
+  },
+
+  resolveThread(project_id, thread_id, user_id, callback) {
+    if (callback == null) {
+      callback = function (error) {}
+    }
+    db.rooms.updateOne(
+      {
+        project_id: ObjectId(project_id.toString()),
+        thread_id: ObjectId(thread_id.toString()),
+      },
+      {
+        $set: {
+          resolved: {
+            user_id,
+            ts: new Date(),
+          },
+        },
+      },
+      callback
+    )
+  },
+
+  reopenThread(project_id, thread_id, callback) {
+    if (callback == null) {
+      callback = function (error) {}
+    }
+    db.rooms.updateOne(
+      {
+        project_id: ObjectId(project_id.toString()),
+        thread_id: ObjectId(thread_id.toString()),
+      },
+      {
+        $unset: {
+          resolved: true,
+        },
+      },
+      callback
+    )
+  },
+
+  deleteThread(project_id, thread_id, callback) {
+    if (callback == null) {
+      callback = function (error, room_id) {}
+    }
+    return this.findOrCreateThread(
+      project_id,
+      thread_id,
+      function (error, room) {
+        if (error != null) {
+          return callback(error)
+        }
+        db.rooms.deleteOne(
+          {
+            _id: room._id,
+          },
+          function (error) {
+            if (error != null) {
+              return callback(error)
+            }
+            return callback(null, room._id)
+          }
+        )
+      }
+    )
+  },
+}
+;[
+  'findOrCreateThread',
+  'findAllThreadRooms',
+  'resolveThread',
+  'reopenThread',
+  'deleteThread',
+].map(method =>
+  metrics.timeAsyncMethod(ThreadManager, method, 'mongo.ThreadManager', logger)
+)
--- a/services/chat/app/js/mongodb.js
+++ b/services/chat/app/js/mongodb.js
@ -0,0 +1,29 @@
+const Settings = require('@overleaf/settings')
+const { MongoClient, ObjectId } = require('mongodb')
+
+const clientPromise = MongoClient.connect(
+  Settings.mongo.url,
+  Settings.mongo.options
+)
+
+let setupDbPromise
+async function waitForDb() {
+  if (!setupDbPromise) {
+    setupDbPromise = setupDb()
+  }
+  await setupDbPromise
+}
+
+const db = {}
+async function setupDb() {
+  const internalDb = (await clientPromise).db()
+
+  db.messages = internalDb.collection('messages')
+  db.rooms = internalDb.collection('rooms')
+}
+
+module.exports = {
+  db,
+  ObjectId,
+  waitForDb,
+}
--- a/services/chat/app/js/router.js
+++ b/services/chat/app/js/router.js
@ -0,0 +1,84 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+let Router
+const MessageHttpController = require('./Features/Messages/MessageHttpController')
+const { ObjectId } = require('./mongodb')
+
+module.exports = Router = {
+  route(app) {
+    app.param('project_id', function (req, res, next, project_id) {
+      if (ObjectId.isValid(project_id)) {
+        return next()
+      } else {
+        return res.status(400).send('Invalid project_id')
+      }
+    })
+
+    app.param('thread_id', function (req, res, next, thread_id) {
+      if (ObjectId.isValid(thread_id)) {
+        return next()
+      } else {
+        return res.status(400).send('Invalid thread_id')
+      }
+    })
+
+    // These are for backwards compatibility
+    app.get(
+      '/room/:project_id/messages',
+      MessageHttpController.getGlobalMessages
+    )
+    app.post(
+      '/room/:project_id/messages',
+      MessageHttpController.sendGlobalMessage
+    )
+
+    app.get(
+      '/project/:project_id/messages',
+      MessageHttpController.getGlobalMessages
+    )
+    app.post(
+      '/project/:project_id/messages',
+      MessageHttpController.sendGlobalMessage
+    )
+
+    app.post(
+      '/project/:project_id/thread/:thread_id/messages',
+      MessageHttpController.sendThreadMessage
+    )
+    app.get('/project/:project_id/threads', MessageHttpController.getAllThreads)
+
+    app.post(
+      '/project/:project_id/thread/:thread_id/messages/:message_id/edit',
+      MessageHttpController.editMessage
+    )
+    app.delete(
+      '/project/:project_id/thread/:thread_id/messages/:message_id',
+      MessageHttpController.deleteMessage
+    )
+
+    app.post(
+      '/project/:project_id/thread/:thread_id/resolve',
+      MessageHttpController.resolveThread
+    )
+    app.post(
+      '/project/:project_id/thread/:thread_id/reopen',
+      MessageHttpController.reopenThread
+    )
+    app.delete(
+      '/project/:project_id/thread/:thread_id',
+      MessageHttpController.deleteThread
+    )
+
+    return app.get('/status', (req, res, next) => res.send('chat is alive'))
+  },
+}
--- a/services/chat/app/js/server.js
+++ b/services/chat/app/js/server.js
@ -0,0 +1,41 @@
+/* eslint-disable
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const metrics = require('@overleaf/metrics')
+metrics.initialize('chat')
+const logger = require('logger-sharelatex')
+logger.initialize('chat')
+const Path = require('path')
+const express = require('express')
+const bodyParser = require('body-parser')
+const errorHandler = require('errorhandler')
+const app = express()
+const server = require('http').createServer(app)
+const Router = require('./router')
+
+app.use(bodyParser.json())
+app.use(bodyParser.urlencoded({ extended: true }))
+app.use(metrics.http.monitor(logger))
+metrics.injectMetricsRoute(app)
+
+if (app.get('env') === 'development') {
+  app.use(errorHandler({ dumpExceptions: true, showStack: true }))
+}
+
+if (app.get('env') === 'production') {
+  app.use(errorHandler())
+}
+
+Router.route(app)
+
+module.exports = {
+  server,
+  app,
+}
--- a/services/chat/buildscript.txt
+++ b/services/chat/buildscript.txt
@ -0,0 +1,8 @@
+chat
+--dependencies=mongo
+--docker-repos=gcr.io/overleaf-ops
+--env-add=
+--env-pass-through=
+--node-version=12.22.3
+--public-repo=False
+--script-version=3.11.0
--- a/services/chat/config/settings.defaults.js
+++ b/services/chat/config/settings.defaults.js
@ -0,0 +1,28 @@
+module.exports = {
+  internal: {
+    chat: {
+      host: process.env.LISTEN_ADDRESS || 'localhost',
+      port: 3010,
+    },
+  },
+
+  apis: {
+    web: {
+      url: `http://${process.env.WEB_HOST || 'localhost'}:${
+        process.env.WEB_PORT || 3000
+      }`,
+      user: process.env.WEB_API_USER || 'sharelatex',
+      pass: process.env.WEB_API_PASSWORD || 'password',
+    },
+  },
+
+  mongo: {
+    options: {
+      useUnifiedTopology:
+        (process.env.MONGO_USE_UNIFIED_TOPOLOGY || 'true') === 'true',
+    },
+    url:
+      process.env.MONGO_CONNECTION_STRING ||
+      `mongodb://${process.env.MONGO_HOST || 'localhost'}/sharelatex`,
+  },
+}
--- a/services/chat/docker-compose.ci.yml
+++ b/services/chat/docker-compose.ci.yml
@ -0,0 +1,48 @@
+# This file was auto-generated, do not edit it directly.
+# Instead run bin/update_build_scripts from
+# https://github.com/sharelatex/sharelatex-dev-environment
+
+version: "2.3"
+
+services:
+  test_unit:
+    image: ci/$PROJECT_NAME:$BRANCH_NAME-$BUILD_NUMBER
+    user: node
+    command: npm run test:unit:_run
+    environment:
+      NODE_ENV: test
+      NODE_OPTIONS: "--unhandled-rejections=strict"
+
+
+  test_acceptance:
+    build: .
+    image: ci/$PROJECT_NAME:$BRANCH_NAME-$BUILD_NUMBER
+    environment:
+      ELASTIC_SEARCH_DSN: es:9200
+      REDIS_HOST: redis
+      QUEUES_REDIS_HOST: redis
+      MONGO_HOST: mongo
+      POSTGRES_HOST: postgres
+      MOCHA_GREP: ${MOCHA_GREP}
+      NODE_ENV: test
+      NODE_OPTIONS: "--unhandled-rejections=strict"
+    depends_on:
+      mongo:
+        condition: service_healthy
+    user: node
+    command: npm run test:acceptance:_run
+
+
+  tar:
+    build: .
+    image: ci/$PROJECT_NAME:$BRANCH_NAME-$BUILD_NUMBER
+    volumes:
+      - ./:/tmp/build/
+    command: tar -czf /tmp/build/build.tar.gz --exclude=build.tar.gz --exclude-vcs .
+    user: root
+  mongo:
+    image: mongo:4.0
+    healthcheck:
+      test: "mongo --quiet localhost/test --eval 'quit(db.runCommand({ ping: 1 }).ok ? 0 : 1)'"
+      interval: 1s
+      retries: 20
--- a/services/chat/docker-compose.yml
+++ b/services/chat/docker-compose.yml
@ -0,0 +1,47 @@
+# This file was auto-generated, do not edit it directly.
+# Instead run bin/update_build_scripts from
+# https://github.com/sharelatex/sharelatex-dev-environment
+
+version: "2.3"
+
+services:
+  test_unit:
+    image: node:12.22.3
+    volumes:
+      - .:/app
+    working_dir: /app
+    environment:
+      MOCHA_GREP: ${MOCHA_GREP}
+      NODE_ENV: test
+      NODE_OPTIONS: "--unhandled-rejections=strict"
+    command: npm run --silent test:unit
+    user: node
+
+  test_acceptance:
+    image: node:12.22.3
+    volumes:
+      - .:/app
+    working_dir: /app
+    environment:
+      ELASTIC_SEARCH_DSN: es:9200
+      REDIS_HOST: redis
+      QUEUES_REDIS_HOST: redis
+      MONGO_HOST: mongo
+      POSTGRES_HOST: postgres
+      MOCHA_GREP: ${MOCHA_GREP}
+      LOG_LEVEL: ERROR
+      NODE_ENV: test
+      NODE_OPTIONS: "--unhandled-rejections=strict"
+    user: node
+    depends_on:
+      mongo:
+        condition: service_healthy
+    command: npm run --silent test:acceptance
+
+  mongo:
+    image: mongo:4.0
+    healthcheck:
+      test: "mongo --quiet localhost/test --eval 'quit(db.runCommand({ ping: 1 }).ok ? 0 : 1)'"
+      interval: 1s
+      retries: 20
+
--- a/services/chat/nodemon.json
+++ b/services/chat/nodemon.json
@ -0,0 +1,17 @@
+{
+  "ignore": [
+    ".git",
+    "node_modules/"
+  ],
+  "verbose": true,
+  "legacyWatch": true,
+  "execMap": {
+    "js": "npm run start"
+  },
+  "watch": [
+    "app/js/",
+    "app.js",
+    "config/"
+  ],
+  "ext": "js"
+}
--- a/services/chat/package-lock.json
+++ b/services/chat/package-lock.json
--- a/services/chat/package.json
+++ b/services/chat/package.json
@ -0,0 +1,55 @@
+{
+  "name": "chat-sharelatex",
+  "version": "0.1.4",
+  "description": "The backend API that powers ShareLaTeX chat",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/sharelatex/chat-sharelatex.git"
+  },
+  "scripts": {
+    "start": "node $NODE_APP_OPTIONS app.js",
+    "test:acceptance": "npm run test:acceptance:_run -- --grep=$MOCHA_GREP",
+    "test:unit": "npm run test:unit:_run -- --grep=$MOCHA_GREP",
+    "nodemon": "nodemon --config nodemon.json",
+    "test:acceptance:_run": "mocha --recursive --reporter spec --timeout 15000 --exit $@ test/acceptance/js",
+    "test:unit:_run": "mocha --recursive --reporter spec $@ test/unit/js",
+    "lint": "eslint --max-warnings 0 --format unix .",
+    "format": "prettier --list-different $PWD/'**/*.js'",
+    "format:fix": "prettier --write $PWD/'**/*.js'",
+    "lint:fix": "eslint --fix ."
+  },
+  "dependencies": {
+    "@overleaf/metrics": "^3.5.1",
+    "@overleaf/settings": "^2.1.1",
+    "async": "3.2.0",
+    "body-parser": "^1.19.0",
+    "bunyan": "^1.8.15",
+    "errorhandler": "^1.5.1",
+    "express": "4.17.1",
+    "logger-sharelatex": "^2.2.0",
+    "mongodb": "^3.6.0",
+    "request": "^2.88.2"
+  },
+  "devDependencies": {
+    "acorn": "^7.1.1",
+    "ajv": "^6.12.0",
+    "chai": "^4.2.0",
+    "chai-as-promised": "^7.1.1",
+    "eslint": "^7.21.0",
+    "eslint-config-prettier": "^8.1.0",
+    "eslint-config-standard": "^16.0.2",
+    "eslint-plugin-chai-expect": "^2.2.0",
+    "eslint-plugin-chai-friendly": "^0.6.0",
+    "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-mocha": "^8.0.0",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-prettier": "^3.1.2",
+    "eslint-plugin-promise": "^4.2.1",
+    "mocha": "^8.3.2",
+    "nodemon": "^2.0.2",
+    "prettier": "^2.2.1",
+    "sandboxed-module": "^2.0.3",
+    "sinon": "^9.0.0",
+    "timekeeper": "^2.2.0"
+  }
+}
--- a/services/chat/test/acceptance/js/DeletingAMessageTests.js
+++ b/services/chat/test/acceptance/js/DeletingAMessageTests.js
@ -0,0 +1,73 @@
+/* eslint-disable
+    max-len,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Deleting a message', function () {
+  before(function (done) {
+    this.project_id = ObjectId().toString()
+    this.user_id = ObjectId().toString()
+    this.thread_id = ObjectId().toString()
+    return ChatApp.ensureRunning(done)
+  })
+
+  return describe('in a thread', function () {
+    before(function (done) {
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        'first message',
+        (error, response, message) => {
+          this.message = message
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          return ChatClient.sendMessage(
+            this.project_id,
+            this.thread_id,
+            this.user_id,
+            'deleted message',
+            (error, response, message1) => {
+              this.message = message1
+              expect(error).to.be.null
+              expect(response.statusCode).to.equal(201)
+              return ChatClient.deleteMessage(
+                this.project_id,
+                this.thread_id,
+                this.message.id,
+                (error, response, body) => {
+                  expect(error).to.be.null
+                  expect(response.statusCode).to.equal(204)
+                  return done()
+                }
+              )
+            }
+          )
+        }
+      )
+    })
+
+    return it('should then remove the message from the threads', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].messages.length).to.equal(1)
+          return done()
+        }
+      )
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/DeletingAThreadTests.js
+++ b/services/chat/test/acceptance/js/DeletingAThreadTests.js
@ -0,0 +1,63 @@
+/* eslint-disable
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+const crypto = require('crypto')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Deleting a thread', function () {
+  before(function (done) {
+    this.project_id = ObjectId().toString()
+    this.user_id = ObjectId().toString()
+    return ChatApp.ensureRunning(done)
+  })
+
+  return describe('with a thread that is deleted', function () {
+    before(function (done) {
+      this.thread_id = ObjectId().toString()
+      this.content = 'deleted thread message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          return ChatClient.deleteThread(
+            this.project_id,
+            this.thread_id,
+            (error, response, body) => {
+              expect(error).to.be.null
+              expect(response.statusCode).to.equal(204)
+              return done()
+            }
+          )
+        }
+      )
+    })
+
+    return it('should then not list the thread for the project', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(Object.keys(threads).length).to.equal(0)
+          return done()
+        }
+      )
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/EditingAMessageTests.js
+++ b/services/chat/test/acceptance/js/EditingAMessageTests.js
@ -0,0 +1,72 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Editing a message', function () {
+  before(function (done) {
+    this.project_id = ObjectId().toString()
+    this.user_id = ObjectId().toString()
+    this.thread_id = ObjectId().toString()
+    return ChatApp.ensureRunning(done)
+  })
+
+  return describe('in a thread', function () {
+    before(function (done) {
+      this.content = 'thread message'
+      this.new_content = 'updated thread message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, message) => {
+          this.message = message
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          expect(this.message.id).to.exist
+          expect(this.message.content).to.equal(this.content)
+          return ChatClient.editMessage(
+            this.project_id,
+            this.thread_id,
+            this.message.id,
+            this.new_content,
+            (error, response, new_message) => {
+              this.new_message = new_message
+              expect(error).to.be.null
+              expect(response.statusCode).to.equal(204)
+              return done()
+            }
+          )
+        }
+      )
+    })
+
+    return it('should then list the updated message in the threads', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].messages.length).to.equal(1)
+          expect(threads[this.thread_id].messages[0].content).to.equal(
+            this.new_content
+          )
+          return done()
+        }
+      )
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/GettingMessagesTests.js
+++ b/services/chat/test/acceptance/js/GettingMessagesTests.js
@ -0,0 +1,138 @@
+/* eslint-disable
+    handle-callback-err,
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+const async = require('async')
+const crypto = require('crypto')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Getting messages', function () {
+  before(function (done) {
+    this.user_id1 = ObjectId().toString()
+    this.user_id2 = ObjectId().toString()
+    this.content1 = 'foo bar'
+    this.content2 = 'hello world'
+    return ChatApp.ensureRunning(done)
+  })
+
+  describe('globally', function () {
+    before(function (done) {
+      this.project_id = ObjectId().toString()
+      return async.series(
+        [
+          cb =>
+            ChatClient.sendGlobalMessage(
+              this.project_id,
+              this.user_id1,
+              this.content1,
+              cb
+            ),
+          cb =>
+            ChatClient.sendGlobalMessage(
+              this.project_id,
+              this.user_id2,
+              this.content2,
+              cb
+            ),
+        ],
+        done
+      )
+    })
+
+    return it('should contain the messages and populated users when getting the messages', function (done) {
+      return ChatClient.getGlobalMessages(
+        this.project_id,
+        (error, response, messages) => {
+          expect(messages.length).to.equal(2)
+          messages.reverse()
+          expect(messages[0].content).to.equal(this.content1)
+          expect(messages[0].user_id).to.equal(this.user_id1)
+          expect(messages[1].content).to.equal(this.content2)
+          expect(messages[1].user_id).to.equal(this.user_id2)
+          return done()
+        }
+      )
+    })
+  })
+
+  return describe('from all the threads', function () {
+    before(function (done) {
+      this.project_id = ObjectId().toString()
+      this.thread_id1 = ObjectId().toString()
+      this.thread_id2 = ObjectId().toString()
+      return async.series(
+        [
+          cb =>
+            ChatClient.sendMessage(
+              this.project_id,
+              this.thread_id1,
+              this.user_id1,
+              'one',
+              cb
+            ),
+          cb =>
+            ChatClient.sendMessage(
+              this.project_id,
+              this.thread_id2,
+              this.user_id2,
+              'two',
+              cb
+            ),
+          cb =>
+            ChatClient.sendMessage(
+              this.project_id,
+              this.thread_id1,
+              this.user_id1,
+              'three',
+              cb
+            ),
+          cb =>
+            ChatClient.sendMessage(
+              this.project_id,
+              this.thread_id2,
+              this.user_id2,
+              'four',
+              cb
+            ),
+        ],
+        done
+      )
+    })
+
+    return it('should contain a dictionary of threads with messages with populated users', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(Object.keys(threads).length).to.equal(2)
+          const thread1 = threads[this.thread_id1]
+          expect(thread1.messages.length).to.equal(2)
+          const thread2 = threads[this.thread_id2]
+          expect(thread2.messages.length).to.equal(2)
+
+          expect(thread1.messages[0].content).to.equal('one')
+          expect(thread1.messages[0].user_id).to.equal(this.user_id1)
+          expect(thread1.messages[1].content).to.equal('three')
+          expect(thread1.messages[1].user_id).to.equal(this.user_id1)
+
+          expect(thread2.messages[0].content).to.equal('two')
+          expect(thread2.messages[0].user_id).to.equal(this.user_id2)
+          expect(thread2.messages[1].content).to.equal('four')
+          expect(thread2.messages[1].user_id).to.equal(this.user_id2)
+          return done()
+        }
+      )
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/ResolvingAThreadTests.js
+++ b/services/chat/test/acceptance/js/ResolvingAThreadTests.js
@ -0,0 +1,147 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+    no-unused-vars,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+const crypto = require('crypto')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Resolving a thread', function () {
+  before(function (done) {
+    this.project_id = ObjectId().toString()
+    this.user_id = ObjectId().toString()
+    return ChatApp.ensureRunning(done)
+  })
+
+  describe('with a resolved thread', function () {
+    before(function (done) {
+      this.thread_id = ObjectId().toString()
+      this.content = 'resolved message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          return ChatClient.resolveThread(
+            this.project_id,
+            this.thread_id,
+            this.user_id,
+            (error, response, body) => {
+              expect(error).to.be.null
+              expect(response.statusCode).to.equal(204)
+              return done()
+            }
+          )
+        }
+      )
+    })
+
+    return it('should then list the thread as resolved', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].resolved).to.equal(true)
+          expect(threads[this.thread_id].resolved_by_user_id).to.equal(
+            this.user_id
+          )
+          const resolved_at = new Date(threads[this.thread_id].resolved_at)
+          expect(new Date() - resolved_at).to.be.below(1000)
+          return done()
+        }
+      )
+    })
+  })
+
+  describe('when a thread is not resolved', function () {
+    before(function (done) {
+      this.thread_id = ObjectId().toString()
+      this.content = 'open message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          return done()
+        }
+      )
+    })
+
+    return it('should not list the thread as resolved', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].resolved).to.be.undefined
+          return done()
+        }
+      )
+    })
+  })
+
+  return describe('when a thread is resolved then reopened', function () {
+    before(function (done) {
+      this.thread_id = ObjectId().toString()
+      this.content = 'resolved message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          return ChatClient.resolveThread(
+            this.project_id,
+            this.thread_id,
+            this.user_id,
+            (error, response, body) => {
+              expect(error).to.be.null
+              expect(response.statusCode).to.equal(204)
+              return ChatClient.reopenThread(
+                this.project_id,
+                this.thread_id,
+                (error, response, body) => {
+                  expect(error).to.be.null
+                  expect(response.statusCode).to.equal(204)
+                  return done()
+                }
+              )
+            }
+          )
+        }
+      )
+    })
+
+    return it('should not list the thread as resolved', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].resolved).to.be.undefined
+          return done()
+        }
+      )
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/SendingAMessageTests.js
+++ b/services/chat/test/acceptance/js/SendingAMessageTests.js
@ -0,0 +1,197 @@
+/* eslint-disable
+    handle-callback-err,
+    max-len,
+    no-return-assign,
+    node/no-deprecated-api,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { ObjectId } = require('../../../app/js/mongodb')
+const { expect } = require('chai')
+
+const ChatClient = require('./helpers/ChatClient')
+const ChatApp = require('./helpers/ChatApp')
+
+describe('Sending a message', function () {
+  before(function (done) {
+    return ChatApp.ensureRunning(done)
+  })
+
+  describe('globally', function () {
+    before(function (done) {
+      this.project_id = ObjectId().toString()
+      this.user_id = ObjectId().toString()
+      this.content = 'global message'
+      return ChatClient.sendGlobalMessage(
+        this.project_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          expect(body.content).to.equal(this.content)
+          expect(body.user_id).to.equal(this.user_id)
+          expect(body.room_id).to.equal(this.project_id)
+          return done()
+        }
+      )
+    })
+
+    return it('should then list the message in the project messages', function (done) {
+      return ChatClient.getGlobalMessages(
+        this.project_id,
+        (error, response, messages) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(messages.length).to.equal(1)
+          expect(messages[0].content).to.equal(this.content)
+          return done()
+        }
+      )
+    })
+  })
+
+  describe('to a thread', function () {
+    before(function (done) {
+      this.project_id = ObjectId().toString()
+      this.user_id = ObjectId().toString()
+      this.thread_id = ObjectId().toString()
+      this.content = 'thread message'
+      return ChatClient.sendMessage(
+        this.project_id,
+        this.thread_id,
+        this.user_id,
+        this.content,
+        (error, response, body) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(201)
+          expect(body.content).to.equal(this.content)
+          expect(body.user_id).to.equal(this.user_id)
+          expect(body.room_id).to.equal(this.project_id)
+          return done()
+        }
+      )
+    })
+
+    it('should then list the message in the threads', function (done) {
+      return ChatClient.getThreads(
+        this.project_id,
+        (error, response, threads) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(threads[this.thread_id].messages.length).to.equal(1)
+          expect(threads[this.thread_id].messages[0].content).to.equal(
+            this.content
+          )
+          return done()
+        }
+      )
+    })
+
+    return it('should not appear in the global messages', function (done) {
+      return ChatClient.getGlobalMessages(
+        this.project_id,
+        (error, response, messages) => {
+          expect(error).to.be.null
+          expect(response.statusCode).to.equal(200)
+          expect(messages.length).to.equal(0)
+          return done()
+        }
+      )
+    })
+  })
+
+  return describe('failure cases', function () {
+    before(function () {
+      this.project_id = ObjectId().toString()
+      this.user_id = ObjectId().toString()
+      return (this.thread_id = ObjectId().toString())
+    })
+
+    describe('with a malformed user_id', function () {
+      return it('should return a graceful error', function (done) {
+        return ChatClient.sendMessage(
+          this.project_id,
+          this.thread_id,
+          'malformed-user',
+          'content',
+          (error, response, body) => {
+            expect(response.statusCode).to.equal(400)
+            expect(body).to.equal('Invalid user_id')
+            return done()
+          }
+        )
+      })
+    })
+
+    describe('with a malformed project_id', function () {
+      return it('should return a graceful error', function (done) {
+        return ChatClient.sendMessage(
+          'malformed-project',
+          this.thread_id,
+          this.user_id,
+          'content',
+          (error, response, body) => {
+            expect(response.statusCode).to.equal(400)
+            expect(body).to.equal('Invalid project_id')
+            return done()
+          }
+        )
+      })
+    })
+
+    describe('with a malformed thread_id', function () {
+      return it('should return a graceful error', function (done) {
+        return ChatClient.sendMessage(
+          this.project_id,
+          'malformed-thread-id',
+          this.user_id,
+          'content',
+          (error, response, body) => {
+            expect(response.statusCode).to.equal(400)
+            expect(body).to.equal('Invalid thread_id')
+            return done()
+          }
+        )
+      })
+    })
+
+    describe('with no content', function () {
+      return it('should return a graceful error', function (done) {
+        return ChatClient.sendMessage(
+          this.project_id,
+          this.thread_id,
+          this.user_id,
+          null,
+          (error, response, body) => {
+            expect(response.statusCode).to.equal(400)
+            expect(body).to.equal('No content provided')
+            return done()
+          }
+        )
+      })
+    })
+
+    return describe('with very long content', function () {
+      return it('should return a graceful error', function (done) {
+        const content = '-'.repeat(10 * 1024 + 1)
+        return ChatClient.sendMessage(
+          this.project_id,
+          this.thread_id,
+          this.user_id,
+          content,
+          (error, response, body) => {
+            expect(response.statusCode).to.equal(400)
+            expect(body).to.equal('Content too long (> 10240 bytes)')
+            return done()
+          }
+        )
+      })
+    })
+  })
+})
--- a/services/chat/test/acceptance/js/helpers/ChatApp.js
+++ b/services/chat/test/acceptance/js/helpers/ChatApp.js
@ -0,0 +1,48 @@
+/* eslint-disable
+    handle-callback-err,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS101: Remove unnecessary use of Array.from
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS205: Consider reworking code to avoid use of IIFEs
+ * DS207: Consider shorter variations of null checks
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const { waitForDb } = require('../../../../app/js/mongodb')
+const app = require('../../../../app')
+
+module.exports = {
+  running: false,
+  initing: false,
+  callbacks: [],
+  ensureRunning(callback) {
+    if (callback == null) {
+      callback = function (error) {}
+    }
+    if (this.running) {
+      return callback()
+    } else if (this.initing) {
+      return this.callbacks.push(callback)
+    }
+    this.initing = true
+    this.callbacks.push(callback)
+    waitForDb().then(() => {
+      return app.listen(3010, 'localhost', error => {
+        if (error != null) {
+          throw error
+        }
+        this.running = true
+        return (() => {
+          const result = []
+          for (callback of Array.from(this.callbacks)) {
+            result.push(callback())
+          }
+          return result
+        })()
+      })
+    })
+  },
+}
--- a/services/chat/test/acceptance/js/helpers/ChatClient.js
+++ b/services/chat/test/acceptance/js/helpers/ChatClient.js
@ -0,0 +1,113 @@
+/* eslint-disable
+    camelcase,
+    max-len,
+*/
+// TODO: This file was created by bulk-decaffeinate.
+// Fix any style issues and re-enable lint.
+/*
+ * decaffeinate suggestions:
+ * DS102: Remove unnecessary code created because of implicit returns
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+const request = require('request').defaults({
+  baseUrl: 'http://localhost:3010',
+})
+
+module.exports = {
+  sendGlobalMessage(project_id, user_id, content, callback) {
+    return request.post(
+      {
+        url: `/project/${project_id}/messages`,
+        json: {
+          user_id,
+          content,
+        },
+      },
+      callback
+    )
+  },
+
+  getGlobalMessages(project_id, callback) {
+    return request.get(
+      {
+        url: `/project/${project_id}/messages`,
+        json: true,
+      },
+      callback
+    )
+  },
+
+  sendMessage(project_id, thread_id, user_id, content, callback) {
+    return request.post(
+      {
+        url: `/project/${project_id}/thread/${thread_id}/messages`,
+        json: {
+          user_id,
+          content,
+        },
+      },
+      callback
+    )
+  },
+
+  getThreads(project_id, callback) {
+    return request.get(
+      {
+        url: `/project/${project_id}/threads`,
+        json: true,
+      },
+      callback
+    )
+  },
+
+  resolveThread(project_id, thread_id, user_id, callback) {
+    return request.post(
+      {
+        url: `/project/${project_id}/thread/${thread_id}/resolve`,
+        json: {
+          user_id,
+        },
+      },
+      callback
+    )
+  },
+
+  reopenThread(project_id, thread_id, callback) {
+    return request.post(
+      {
+        url: `/project/${project_id}/thread/${thread_id}/reopen`,
+      },
+      callback
+    )
+  },
+
+  deleteThread(project_id, thread_id, callback) {
+    return request.del(
+      {
+        url: `/project/${project_id}/thread/${thread_id}`,
+      },
+      callback
+    )
+  },
+
+  editMessage(project_id, thread_id, message_id, content, callback) {
+    return request.post(
+      {
+        url: `/project/${project_id}/thread/${thread_id}/messages/${message_id}/edit`,
+        json: {
+          content,
+        },
+      },
+      callback
+    )
+  },
+
+  deleteMessage(project_id, thread_id, message_id, callback) {
+    return request.del(
+      {
+        url: `/project/${project_id}/thread/${thread_id}/messages/${message_id}`,
+      },
+      callback
+    )
+  },
+}