sinon = require('sinon')
chai = require('chai')
should = chai.should()
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()
		@CompileController = SandboxedModule.require modulePath, requires:
			"settings-sharelatex": @settings =
				apis:
					clsi:
						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
		@project_id = "project-id"
		@next = sinon.stub()
		@req = new MockRequest()
		@res = new MockResponse()

	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"
			@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 "deleteAuxFiles", ->
		beforeEach ->
			@CompileController.proxyToClsi = sinon.stub()
			@req.params =
				Project_id: @project_id
			@CompileController.deleteAuxFiles @req, @res, @next

		it "should proxy to the CLSI", ->
			@CompileController.proxyToClsi
				.calledWith("/project/#{@project_id}", @req, @res, @next)
				.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()