const SandboxedModule = require('sandboxed-module')
const path = require('path')
const sinon = require('sinon')
const { expect } = require('chai')
const { RequestFailedError } = require('@overleaf/fetch-utils')

const MODULE_PATH = path.join(
  __dirname,
  '../../../../app/src/Features/Chat/ChatApiHandler'
)

describe('ChatApiHandler', function () {
  beforeEach(function () {
    this.settings = {
      apis: {
        chat: {
          internal_url: 'http://chat.overleaf.env',
        },
      },
    }
    this.FetchUtils = {
      fetchJson: sinon.stub(),
      fetchNothing: sinon.stub().resolves(),
    }
    this.ChatApiHandler = SandboxedModule.require(MODULE_PATH, {
      requires: {
        '@overleaf/settings': this.settings,
        '@overleaf/fetch-utils': this.FetchUtils,
      },
    })
    this.project_id = '3213213kl12j'
    this.user_id = '2k3jlkjs9'
    this.content = 'my message here'
  })

  describe('sendGlobalMessage', function () {
    describe('successfully', function () {
      beforeEach(async function () {
        this.message = { mock: 'message' }
        this.FetchUtils.fetchJson.resolves(this.message)
        this.result = await this.ChatApiHandler.promises.sendGlobalMessage(
          this.project_id,
          this.user_id,
          this.content
        )
      })

      it('should post the data to the chat api', function () {
        this.FetchUtils.fetchJson.should.have.been.calledWith(
          sinon.match(
            url =>
              url.toString() ===
              `${this.settings.apis.chat.internal_url}/project/${this.project_id}/messages`
          ),
          {
            method: 'POST',
            json: {
              content: this.content,
              user_id: this.user_id,
            },
          }
        )
      })

      it('should return the message from the post', function () {
        expect(this.result).to.deep.equal(this.message)
      })
    })

    describe('with a non-success status code', function () {
      beforeEach(async function () {
        this.error = new RequestFailedError('some-url', {}, { status: 500 })
        this.FetchUtils.fetchJson.rejects(this.error)
        await expect(
          this.ChatApiHandler.promises.sendGlobalMessage(
            this.project_id,
            this.user_id,
            this.content
          )
        ).to.be.rejectedWith(this.error)
      })
    })
  })

  describe('getGlobalMessages', function () {
    beforeEach(function () {
      this.messages = [{ mock: 'message' }]
      this.limit = 30
      this.before = '1234'
    })

    describe('successfully', function () {
      beforeEach(async function () {
        this.FetchUtils.fetchJson.resolves(this.messages)
        this.result = await this.ChatApiHandler.promises.getGlobalMessages(
          this.project_id,
          this.limit,
          this.before
        )
      })

      it('should make get request for room to chat api', function () {
        this.FetchUtils.fetchJson.should.have.been.calledWith(
          sinon.match(
            url =>
              url.toString() ===
              `${this.settings.apis.chat.internal_url}/project/${this.project_id}/messages?limit=${this.limit}&before=${this.before}`
          )
        )
      })

      it('should return the messages from the request', function () {
        expect(this.result).to.deep.equal(this.messages)
      })
    })

    describe('with failure error code', function () {
      beforeEach(async function () {
        this.error = new RequestFailedError('some-url', {}, { status: 500 })
        this.FetchUtils.fetchJson.rejects(this.error)
        await expect(
          this.ChatApiHandler.getGlobalMessages(
            this.project_id,
            this.limit,
            this.before
          )
        ).to.be.rejectedWith(this.error)
      })
    })
  })
})