sinon = require('sinon')
chai = require('chai')
should = chai.should()
assert = require("chai").assert
expect = chai.expect
modulePath = "../../../../app/js/Features/Compile/CompileController.js"
SandboxedModule = require('sandboxed-module')
MockRequest = require "../helpers/MockRequest"
MockResponse = require "../helpers/MockResponse"

describe "CompileController", ->
	beforeEach ->
		@CompileManager = 
			compile: sinon.stub()
		@ClsiManager = {}
		@UserGetter = 
			getUser:sinon.stub()
		@CompileController = SandboxedModule.require modulePath, requires:
			"settings-sharelatex": @settings =
				apis:
					clsi:
						url: "clsi.example.com"
					clsi_priority:
						url: "clsi.example.com"
			"request": @request = sinon.stub()
			"../../models/Project": Project: @Project = {}
			"logger-sharelatex": @logger = { log: sinon.stub(), error: sinon.stub() }
			"../../infrastructure/Metrics": @Metrics =  { inc: sinon.stub() }
			"./CompileManager":@CompileManager
			"../User/UserGetter":@UserGetter
			"./ClsiManager": @ClsiManager
			"../Authentication/AuthenticationController": @AuthenticationController = {}
		@project_id = "project-id"
		@user = 
			features:
				compileGroup: "premium"
				compileTimeout: 100
		@next = sinon.stub()
		@req = new MockRequest()
		@res = new MockResponse()

	describe "compile", ->

		describe "when not an auto compile", ->
			beforeEach ->
				@req.params =
					Project_id: @project_id
				@req.session = {}
				@AuthenticationController.getLoggedInUserId = sinon.stub().callsArgWith(1, null, @user_id = "mock-user-id")
				@CompileManager.compile = sinon.stub().callsArgWith(3, null, @status = "success", @outputFiles = ["mock-output-files"])
				@UserGetter.getUser.callsArgWith(2, null, @user)
				@CompileController.compile @req, @res, @next

			it "should look up the user id", ->
				@AuthenticationController.getLoggedInUserId
					.calledWith(@req)
					.should.equal true

			it "should do the compile without the auto compile flag", ->
				@CompileManager.compile
					.calledWith(@project_id, @user_id, { isAutoCompile: false, settingsOverride:{timeout:@user.features.compileTimeout, compiler:@user.features.compileGroup} })
					.should.equal true

			it "should set the content-type of the response to application/json", ->
				@res.contentType
					.calledWith("application/json")
					.should.equal true

			it "should send a successful response reporting the status and files", ->
				@res.statusCode.should.equal 200
				@res.body.should.equal JSON.stringify({
					status: @status
					outputFiles: @outputFiles
				})

			it "should get the compile timeout from the users features",->
				@UserGetter.getUser.args[0][0].should.equal @user_id
				assert.deepEqual @UserGetter.getUser.args[0][1], {"features.compileGroup":1, "features.compileTimeout":1}

			it "should put the compile group on the req", ->
				@req.session.compileGroup.should.equal @user.features.compileGroup

			it "should set the timeout", ->
				assert @res.timout > 1000 * 60 * 3

		describe "when an auto compile", ->
			beforeEach ->
				@req.params =
					Project_id: @project_id
				@req.query =
					auto_compile: "true"
				@AuthenticationController.getLoggedInUserId = sinon.stub().callsArgWith(1, null, @user_id = "mock-user-id")
				@CompileManager.compile = sinon.stub().callsArgWith(3, null, @status = "success", @outputFiles = ["mock-output-files"])
				@UserGetter.getUser.callsArgWith(2, null, @user)
				@CompileController.compile @req, @res, @next

			it "should do the compile with the auto compile flag", ->
				@CompileManager.compile.calledWith(@project_id, @user_id, { isAutoCompile: true, settingsOverride:{timeout:@user.features.compileTimeout, compiler:@user.features.compileGroup} }).should.equal true

	describe "downloadPdf", ->
		beforeEach ->
			@req.params =
				Project_id: @project_id
			@project =
				getSafeProjectName: () => @safe_name = "safe-name"
				
			@Project.findById = sinon.stub().callsArgWith(2, null, @project)

		describe "when downloading for embedding", ->
			beforeEach ->
				@project.useClsi2 = true
				@CompileController.proxyToClsi = sinon.stub()
				@CompileController.downloadPdf(@req, @res, @next)

			it "should look up the project", ->
				@Project.findById
					.calledWith(@project_id, {name: 1})
					.should.equal true

			it "should set the content-type of the response to application/pdf", ->
				@res.contentType
					.calledWith("application/pdf")
					.should.equal true

			it "should set the content-disposition header with the project name", ->
				@res.header
					.calledWith("Content-Disposition", "filename=#{@safe_name}.pdf")
					.should.equal true

			it "should increment the pdf-downloads metric", ->
				@Metrics.inc
					.calledWith("pdf-downloads")
					.should.equal true

			it "should proxy the PDF from the CLSI", ->
				@CompileController.proxyToClsi
					.calledWith("/project/#{@project_id}/output/output.pdf", @req, @res, @next)
					.should.equal true

	describe "proxyToClsi", ->
		beforeEach ->
			@request.returns(@proxy = {
				pipe: sinon.stub()
				on: sinon.stub()
			})
			@upstream =
				statusCode: 204
				headers: { "mock": "header" }
			@req.method = "mock-method"


		describe "user with standard priority", ->

			beforeEach ->
				@UserGetter.getUser.callsArgWith(2, null, @user)
				@CompileController.proxyToClsi(@url = "/test", @req, @res, @next)	


			it "should open a request to the CLSI", ->
				@request
					.calledWith(
						method: @req.method
						url: "#{@settings.apis.clsi.url}#{@url}",
						timeout: 60 * 1000
					)
					.should.equal true

			it "should pass the request on to the client", ->
				@proxy.pipe
					.calledWith(@res)
					.should.equal true

			it "should bind an error handle to the request proxy", ->
				@proxy.on.calledWith("error").should.equal true

		describe "user with priority compile", ->

			beforeEach ->
				@req.session.compileGroup = "priority"
				@UserGetter.getUser.callsArgWith(2, null, @user)
				@CompileController.proxyToClsi(@url = "/test", @req, @res, @next)	

			it "should proxy to the priorty url if the user has the feature", ()->
				@request
					.calledWith(
						method: @req.method
						url: "#{@settings.apis.clsi_priority.url}#{@url}",
						timeout: 60 * 1000
					)
					.should.equal true


	describe "deleteAuxFiles", ->
		beforeEach ->
			@ClsiManager.deleteAuxFiles = sinon.stub().callsArg(1)
			@req.params =
				Project_id: @project_id
			@res.send = sinon.stub()
			@CompileController.deleteAuxFiles @req, @res, @next

		it "should proxy to the CLSI", ->
			@ClsiManager.deleteAuxFiles
				.calledWith(@project_id)
				.should.equal true

		it "should return a 200", ->
			@res.send
				.calledWith(200)
				.should.equal true

	describe "compileAndDownloadPdf", ->
		beforeEach ->
			@req =
				params:
					project_id:@project_id
			@CompileManager.compile.callsArgWith(3)
			@CompileController.proxyToClsi = sinon.stub()
			@res = 
				send:=>
									
		it "should call compile in the compile manager", (done)->
			@CompileController.compileAndDownloadPdf @req, @res
			@CompileManager.compile.calledWith(@project_id).should.equal true
			done()

		it "should proxy the res to the clsi with correct url", (done)->
			@CompileController.compileAndDownloadPdf @req, @res
			@CompileController.proxyToClsi.calledWith("/project/#{@project_id}/output/output.pdf", @req, @res).should.equal true
			done()