/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const sinon = require('sinon');
const chai = require('chai');
const should = chai.should();
const { expect } = chai;
const modulePath = "../../../../app/js/UpdateTrimmer.js";
const SandboxedModule = require('sandboxed-module');
const tk = require("timekeeper");

describe("UpdateTrimmer", function() {
	beforeEach(function() {
		this.now = new Date();
		tk.freeze(this.now);

		this.UpdateTrimmer = SandboxedModule.require(modulePath, { requires: {
			"logger-sharelatex": (this.logger = { log: sinon.stub(), error: sinon.stub() }),
			"./WebApiManager": (this.WebApiManager = {}),
			"./MongoManager": (this.MongoManager = {})
		}
	});

		this.callback = sinon.stub();
		return this.project_id = "mock-project-id";
	});

	afterEach(() => tk.reset());

	return describe("shouldTrimUpdates", function() {
		beforeEach(function() {
			this.metadata = {};
			this.details =
				{features: {}};
			this.MongoManager.getProjectMetaData = sinon.stub().callsArgWith(1, null, this.metadata);
			this.MongoManager.setProjectMetaData = sinon.stub().callsArgWith(2);
			this.MongoManager.upgradeHistory = sinon.stub().callsArgWith(1);
			return this.WebApiManager.getProjectDetails = sinon.stub().callsArgWith(1, null, this.details);
		});

		describe("with preserveHistory set in the project meta data", function() {
			beforeEach(function() {
				this.metadata.preserveHistory = true;
				return this.UpdateTrimmer.shouldTrimUpdates(this.project_id, this.callback);
			});

			it("should look up the meta data", function() {
				return this.MongoManager.getProjectMetaData
					.calledWith(this.project_id)
					.should.equal(true);
			});

			it("should not look up the project details", function() {
				return this.WebApiManager.getProjectDetails
					.called
					.should.equal(false);
			});

			return it("should return false", function() {
				return this.callback.calledWith(null, false).should.equal(true);
			});
		});

		describe("without preserveHistory set in the project meta data", function() {
			beforeEach(function() {
				return this.metadata.preserveHistory = false;
			});

			describe("when the project has the versioning feature", function() {
				beforeEach(function() {
					this.details.features.versioning = true;
					return this.UpdateTrimmer.shouldTrimUpdates(this.project_id, this.callback);
				});

				it("should look up the meta data", function() {
					return this.MongoManager.getProjectMetaData
						.calledWith(this.project_id)
						.should.equal(true);
				});

				it("should look up the project details", function() {
					return this.WebApiManager.getProjectDetails
						.calledWith(this.project_id)
						.should.equal(true);
				});

				it("should insert preserveHistory into the metadata", function() {
					return this.MongoManager.setProjectMetaData
						.calledWith(this.project_id, {preserveHistory: true})
						.should.equal(true);
				});

				it("should upgrade any existing history", function() {
					return this.MongoManager.upgradeHistory
						.calledWith(this.project_id)
						.should.equal(true);
				});

				return it("should return false", function() {
					return this.callback.calledWith(null, false).should.equal(true);
				});
			});

			return describe("when the project does not have the versioning feature", function() {
				beforeEach(function() {
					this.details.features.versioning = false;
					return this.UpdateTrimmer.shouldTrimUpdates(this.project_id, this.callback);
				});

				return it("should return true", function() {
					return this.callback.calledWith(null, true).should.equal(true);
				});
			});
		});

		return describe("without any meta data", function() {
			beforeEach(function() {
				return this.MongoManager.getProjectMetaData = sinon.stub().callsArgWith(1, null, null);
			});

			describe("when the project has the versioning feature", function() {
				beforeEach(function() {
					this.details.features.versioning = true;
					return this.UpdateTrimmer.shouldTrimUpdates(this.project_id, this.callback);
				});

				it("should insert preserveHistory into the metadata", function() {
					return this.MongoManager.setProjectMetaData
						.calledWith(this.project_id, {preserveHistory: true})
						.should.equal(true);
				});

				it("should upgrade any existing history", function() {
					return this.MongoManager.upgradeHistory
						.calledWith(this.project_id)
						.should.equal(true);
				});

				return it("should return false", function() {
					return this.callback.calledWith(null, false).should.equal(true);
				});
			});

			return describe("when the project does not have the versioning feature", function() {
				beforeEach(function() {
					this.details.features.versioning = false;
					return this.UpdateTrimmer.shouldTrimUpdates(this.project_id, this.callback);
				});

				return it("should return true", function() {
					return this.callback.calledWith(null, true).should.equal(true);
				});
			});
		});
	});
});