/* eslint-disable @typescript-eslint/no-unused-expressions,@typescript-eslint/require-await */

import 'mocha'
import * as chai from 'chai'
import { completeVideoCheck, dateIsValid, expectAccountFollows, expectChannelsFollows, testCaptionFile } from '@server/tests/shared'
import { VideoCreateResult, VideoPrivacy } from '@shared/models'
import { cleanupTests, createMultipleServers, PeerTubeServer, setAccessTokensToServers, waitJobs } from '@shared/server-commands'

const expect = chai.expect

describe('Test follows', function () {
  let servers: PeerTubeServer[] = []

  before(async function () {
    this.timeout(120000)

    servers = await createMultipleServers(3)

    // Get the access tokens
    await setAccessTokensToServers(servers)
  })

  describe('Data propagation after follow', function () {

    it('Should not have followers/followings', async function () {
      for (const server of servers) {
        const bodies = await Promise.all([
          server.follows.getFollowers({ start: 0, count: 5, sort: 'createdAt' }),
          server.follows.getFollowings({ start: 0, count: 5, sort: 'createdAt' })
        ])

        for (const body of bodies) {
          expect(body.total).to.equal(0)

          const follows = body.data
          expect(follows).to.be.an('array')
          expect(follows).to.have.lengthOf(0)
        }
      }
    })

    it('Should have server 1 following root account of server 2 and server 3', async function () {
      this.timeout(30000)

      await servers[0].follows.follow({
        hosts: [ servers[2].url ],
        handles: [ 'root@' + servers[1].host ]
      })

      await waitJobs(servers)
    })

    it('Should have 2 followings on server 1', async function () {
      const body = await servers[0].follows.getFollowings({ start: 0, count: 1, sort: 'createdAt' })
      expect(body.total).to.equal(2)

      let follows = body.data
      expect(follows).to.be.an('array')
      expect(follows).to.have.lengthOf(1)

      const body2 = await servers[0].follows.getFollowings({ start: 1, count: 1, sort: 'createdAt' })
      follows = follows.concat(body2.data)

      const server2Follow = follows.find(f => f.following.host === servers[1].host)
      const server3Follow = follows.find(f => f.following.host === servers[2].host)

      expect(server2Follow).to.not.be.undefined
      expect(server2Follow.following.name).to.equal('root')
      expect(server2Follow.state).to.equal('accepted')

      expect(server3Follow).to.not.be.undefined
      expect(server3Follow.following.name).to.equal('peertube')
      expect(server3Follow.state).to.equal('accepted')
    })

    it('Should have 0 followings on server 2 and 3', async function () {
      for (const server of [ servers[1], servers[2] ]) {
        const body = await server.follows.getFollowings({ start: 0, count: 5, sort: 'createdAt' })
        expect(body.total).to.equal(0)

        const follows = body.data
        expect(follows).to.be.an('array')
        expect(follows).to.have.lengthOf(0)
      }
    })

    it('Should have 1 followers on server 3', async function () {
      const body = await servers[2].follows.getFollowers({ start: 0, count: 1, sort: 'createdAt' })
      expect(body.total).to.equal(1)

      const follows = body.data
      expect(follows).to.be.an('array')
      expect(follows).to.have.lengthOf(1)
      expect(follows[0].follower.host).to.equal('localhost:' + servers[0].port)
    })

    it('Should have 0 followers on server 1 and 2', async function () {
      for (const server of [ servers[0], servers[1] ]) {
        const body = await server.follows.getFollowers({ start: 0, count: 5, sort: 'createdAt' })
        expect(body.total).to.equal(0)

        const follows = body.data
        expect(follows).to.be.an('array')
        expect(follows).to.have.lengthOf(0)
      }
    })

    it('Should search/filter followings on server 1', async function () {
      const sort = 'createdAt'
      const start = 0
      const count = 1

      {
        const search = ':' + servers[1].port

        {
          const body = await servers[0].follows.getFollowings({ start, count, sort, search })
          expect(body.total).to.equal(1)

          const follows = body.data
          expect(follows).to.have.lengthOf(1)
          expect(follows[0].following.host).to.equal(servers[1].host)
        }

        {
          const body = await servers[0].follows.getFollowings({ start, count, sort, search, state: 'accepted' })
          expect(body.total).to.equal(1)
          expect(body.data).to.have.lengthOf(1)
        }

        {
          const body = await servers[0].follows.getFollowings({ start, count, sort, search, state: 'accepted', actorType: 'Person' })
          expect(body.total).to.equal(1)
          expect(body.data).to.have.lengthOf(1)
        }

        {
          const body = await servers[0].follows.getFollowings({
            start,
            count,
            sort,
            search,
            state: 'accepted',
            actorType: 'Application'
          })
          expect(body.total).to.equal(0)
          expect(body.data).to.have.lengthOf(0)
        }

        {
          const body = await servers[0].follows.getFollowings({ start, count, sort, search, state: 'pending' })
          expect(body.total).to.equal(0)
          expect(body.data).to.have.lengthOf(0)
        }
      }

      {
        const body = await servers[0].follows.getFollowings({ start, count, sort, search: 'root' })
        expect(body.total).to.equal(1)
        expect(body.data).to.have.lengthOf(1)
      }

      {
        const body = await servers[0].follows.getFollowings({ start, count, sort, search: 'bla' })
        expect(body.total).to.equal(0)

        expect(body.data).to.have.lengthOf(0)
      }
    })

    it('Should search/filter followers on server 2', async function () {
      const start = 0
      const count = 5
      const sort = 'createdAt'

      {
        const search = servers[0].port + ''

        {
          const body = await servers[2].follows.getFollowers({ start, count, sort, search })
          expect(body.total).to.equal(1)

          const follows = body.data
          expect(follows).to.have.lengthOf(1)
          expect(follows[0].following.host).to.equal(servers[2].host)
        }

        {
          const body = await servers[2].follows.getFollowers({ start, count, sort, search, state: 'accepted' })
          expect(body.total).to.equal(1)
          expect(body.data).to.have.lengthOf(1)
        }

        {
          const body = await servers[2].follows.getFollowers({ start, count, sort, search, state: 'accepted', actorType: 'Person' })
          expect(body.total).to.equal(0)
          expect(body.data).to.have.lengthOf(0)
        }

        {
          const body = await servers[2].follows.getFollowers({
            start,
            count,
            sort,
            search,
            state: 'accepted',
            actorType: 'Application'
          })
          expect(body.total).to.equal(1)
          expect(body.data).to.have.lengthOf(1)
        }

        {
          const body = await servers[2].follows.getFollowers({ start, count, sort, search, state: 'pending' })
          expect(body.total).to.equal(0)
          expect(body.data).to.have.lengthOf(0)
        }
      }

      {
        const body = await servers[2].follows.getFollowers({ start, count, sort, search: 'bla' })
        expect(body.total).to.equal(0)

        const follows = body.data
        expect(follows).to.have.lengthOf(0)
      }
    })

    it('Should have the correct follows counts', async function () {
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[0].host, followers: 0, following: 2 })
      await expectAccountFollows({ server: servers[0], handle: 'root@' + servers[1].host, followers: 1, following: 0 })
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[2].host, followers: 1, following: 0 })

      // Server 2 and 3 does not know server 1 follow another server (there was not a refresh)
      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[1], handle: 'root@' + servers[1].host, followers: 1, following: 0 })
      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[1].host, followers: 0, following: 0 })

      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[2].host, followers: 1, following: 0 })
    })

    it('Should unfollow server 3 on server 1', async function () {
      this.timeout(15000)

      await servers[0].follows.unfollow({ target: servers[2] })

      await waitJobs(servers)
    })

    it('Should not follow server 3 on server 1 anymore', async function () {
      const body = await servers[0].follows.getFollowings({ start: 0, count: 2, sort: 'createdAt' })
      expect(body.total).to.equal(1)

      const follows = body.data
      expect(follows).to.be.an('array')
      expect(follows).to.have.lengthOf(1)

      expect(follows[0].following.host).to.equal(servers[1].host)
    })

    it('Should not have server 1 as follower on server 3 anymore', async function () {
      const body = await servers[2].follows.getFollowers({ start: 0, count: 1, sort: 'createdAt' })
      expect(body.total).to.equal(0)

      const follows = body.data
      expect(follows).to.be.an('array')
      expect(follows).to.have.lengthOf(0)
    })

    it('Should have the correct follows counts after the unfollow', async function () {
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[0], handle: 'root@' + servers[1].host, followers: 1, following: 0 })
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[2].host, followers: 0, following: 0 })

      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[1], handle: 'root@' + servers[1].host, followers: 1, following: 0 })
      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[1].host, followers: 0, following: 0 })

      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[0].host, followers: 0, following: 0 })
      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[2].host, followers: 0, following: 0 })
    })

    it('Should upload a video on server 2 and 3 and propagate only the video of server 2', async function () {
      this.timeout(120000)

      await servers[1].videos.upload({ attributes: { name: 'server2' } })
      await servers[2].videos.upload({ attributes: { name: 'server3' } })

      await waitJobs(servers)

      {
        const { total, data } = await servers[0].videos.list()
        expect(total).to.equal(1)
        expect(data[0].name).to.equal('server2')
      }

      {
        const { total, data } = await servers[1].videos.list()
        expect(total).to.equal(1)
        expect(data[0].name).to.equal('server2')
      }

      {
        const { total, data } = await servers[2].videos.list()
        expect(total).to.equal(1)
        expect(data[0].name).to.equal('server3')
      }
    })

    it('Should remove account follow', async function () {
      this.timeout(15000)

      await servers[0].follows.unfollow({ target: 'root@' + servers[1].host })

      await waitJobs(servers)
    })

    it('Should have removed the account follow', async function () {
      await expectAccountFollows({ server: servers[0], handle: 'root@' + servers[1].host, followers: 0, following: 0 })
      await expectAccountFollows({ server: servers[1], handle: 'root@' + servers[1].host, followers: 0, following: 0 })

      {
        const { total, data } = await servers[0].follows.getFollowings()
        expect(total).to.equal(0)
        expect(data).to.have.lengthOf(0)
      }

      {
        const { total, data } = await servers[0].videos.list()
        expect(total).to.equal(0)
        expect(data).to.have.lengthOf(0)
      }
    })

    it('Should follow a channel', async function () {
      this.timeout(15000)

      await servers[0].follows.follow({
        handles: [ 'root_channel@' + servers[1].host ]
      })

      await waitJobs(servers)

      await expectChannelsFollows({ server: servers[0], handle: 'root_channel@' + servers[1].host, followers: 1, following: 0 })
      await expectChannelsFollows({ server: servers[1], handle: 'root_channel@' + servers[1].host, followers: 1, following: 0 })

      {
        const { total, data } = await servers[0].follows.getFollowings()
        expect(total).to.equal(1)
        expect(data).to.have.lengthOf(1)
      }

      {
        const { total, data } = await servers[0].videos.list()
        expect(total).to.equal(1)
        expect(data).to.have.lengthOf(1)
      }
    })
  })

  describe('Should propagate data on a new server follow', function () {
    let video4: VideoCreateResult

    before(async function () {
      this.timeout(50000)

      const video4Attributes = {
        name: 'server3-4',
        category: 2,
        nsfw: true,
        licence: 6,
        tags: [ 'tag1', 'tag2', 'tag3' ]
      }

      await servers[2].videos.upload({ attributes: { name: 'server3-2' } })
      await servers[2].videos.upload({ attributes: { name: 'server3-3' } })
      video4 = await servers[2].videos.upload({ attributes: video4Attributes })
      await servers[2].videos.upload({ attributes: { name: 'server3-5' } })
      await servers[2].videos.upload({ attributes: { name: 'server3-6' } })

      {
        const userAccessToken = await servers[2].users.generateUserAndToken('captain')

        await servers[2].videos.rate({ id: video4.id, rating: 'like' })
        await servers[2].videos.rate({ token: userAccessToken, id: video4.id, rating: 'dislike' })
      }

      {
        await servers[2].comments.createThread({ videoId: video4.id, text: 'my super first comment' })

        await servers[2].comments.addReplyToLastThread({ text: 'my super answer to thread 1' })
        await servers[2].comments.addReplyToLastReply({ text: 'my super answer to answer of thread 1' })
        await servers[2].comments.addReplyToLastThread({ text: 'my second answer to thread 1' })
      }

      {
        const { id: threadId } = await servers[2].comments.createThread({ videoId: video4.id, text: 'will be deleted' })
        await servers[2].comments.addReplyToLastThread({ text: 'answer to deleted' })

        const { id: replyId } = await servers[2].comments.addReplyToLastThread({ text: 'will also be deleted' })

        await servers[2].comments.addReplyToLastReply({ text: 'my second answer to deleted' })

        await servers[2].comments.delete({ videoId: video4.id, commentId: threadId })
        await servers[2].comments.delete({ videoId: video4.id, commentId: replyId })
      }

      await servers[2].captions.add({
        language: 'ar',
        videoId: video4.id,
        fixture: 'subtitle-good2.vtt'
      })

      await waitJobs(servers)

      // Server 1 follows server 3
      await servers[0].follows.follow({ hosts: [ servers[2].url ] })

      await waitJobs(servers)
    })

    it('Should have the correct follows counts', async function () {
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[0].host, followers: 0, following: 2 })
      await expectAccountFollows({ server: servers[0], handle: 'root@' + servers[1].host, followers: 0, following: 0 })
      await expectChannelsFollows({ server: servers[0], handle: 'root_channel@' + servers[1].host, followers: 1, following: 0 })
      await expectAccountFollows({ server: servers[0], handle: 'peertube@' + servers[2].host, followers: 1, following: 0 })

      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[1], handle: 'peertube@' + servers[1].host, followers: 0, following: 0 })
      await expectAccountFollows({ server: servers[1], handle: 'root@' + servers[1].host, followers: 0, following: 0 })
      await expectChannelsFollows({ server: servers[1], handle: 'root_channel@' + servers[1].host, followers: 1, following: 0 })

      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[0].host, followers: 0, following: 1 })
      await expectAccountFollows({ server: servers[2], handle: 'peertube@' + servers[2].host, followers: 1, following: 0 })
    })

    it('Should have propagated videos', async function () {
      const { total, data } = await servers[0].videos.list()
      expect(total).to.equal(7)

      const video2 = data.find(v => v.name === 'server3-2')
      video4 = data.find(v => v.name === 'server3-4')
      const video6 = data.find(v => v.name === 'server3-6')

      expect(video2).to.not.be.undefined
      expect(video4).to.not.be.undefined
      expect(video6).to.not.be.undefined

      const isLocal = false
      const checkAttributes = {
        name: 'server3-4',
        category: 2,
        licence: 6,
        language: 'zh',
        nsfw: true,
        description: 'my super description',
        support: 'my super support text',
        account: {
          name: 'root',
          host: servers[2].host
        },
        isLocal,
        commentsEnabled: true,
        downloadEnabled: true,
        duration: 5,
        tags: [ 'tag1', 'tag2', 'tag3' ],
        privacy: VideoPrivacy.PUBLIC,
        likes: 1,
        dislikes: 1,
        channel: {
          displayName: 'Main root channel',
          name: 'root_channel',
          description: '',
          isLocal
        },
        fixture: 'video_short.webm',
        files: [
          {
            resolution: 720,
            size: 218910
          }
        ]
      }
      await completeVideoCheck(servers[0], video4, checkAttributes)
    })

    it('Should have propagated comments', async function () {
      const { total, data } = await servers[0].comments.listThreads({ videoId: video4.id, sort: 'createdAt' })

      expect(total).to.equal(2)
      expect(data).to.be.an('array')
      expect(data).to.have.lengthOf(2)

      {
        const comment = data[0]
        expect(comment.inReplyToCommentId).to.be.null
        expect(comment.text).equal('my super first comment')
        expect(comment.videoId).to.equal(video4.id)
        expect(comment.id).to.equal(comment.threadId)
        expect(comment.account.name).to.equal('root')
        expect(comment.account.host).to.equal(servers[2].host)
        expect(comment.totalReplies).to.equal(3)
        expect(dateIsValid(comment.createdAt as string)).to.be.true
        expect(dateIsValid(comment.updatedAt as string)).to.be.true

        const threadId = comment.threadId

        const tree = await servers[0].comments.getThread({ videoId: video4.id, threadId })
        expect(tree.comment.text).equal('my super first comment')
        expect(tree.children).to.have.lengthOf(2)

        const firstChild = tree.children[0]
        expect(firstChild.comment.text).to.equal('my super answer to thread 1')
        expect(firstChild.children).to.have.lengthOf(1)

        const childOfFirstChild = firstChild.children[0]
        expect(childOfFirstChild.comment.text).to.equal('my super answer to answer of thread 1')
        expect(childOfFirstChild.children).to.have.lengthOf(0)

        const secondChild = tree.children[1]
        expect(secondChild.comment.text).to.equal('my second answer to thread 1')
        expect(secondChild.children).to.have.lengthOf(0)
      }

      {
        const deletedComment = data[1]
        expect(deletedComment).to.not.be.undefined
        expect(deletedComment.isDeleted).to.be.true
        expect(deletedComment.deletedAt).to.not.be.null
        expect(deletedComment.text).to.equal('')
        expect(deletedComment.inReplyToCommentId).to.be.null
        expect(deletedComment.account).to.be.null
        expect(deletedComment.totalReplies).to.equal(2)
        expect(dateIsValid(deletedComment.deletedAt as string)).to.be.true

        const tree = await servers[0].comments.getThread({ videoId: video4.id, threadId: deletedComment.threadId })
        const [ commentRoot, deletedChildRoot ] = tree.children

        expect(deletedChildRoot).to.not.be.undefined
        expect(deletedChildRoot.comment.isDeleted).to.be.true
        expect(deletedChildRoot.comment.deletedAt).to.not.be.null
        expect(deletedChildRoot.comment.text).to.equal('')
        expect(deletedChildRoot.comment.inReplyToCommentId).to.equal(deletedComment.id)
        expect(deletedChildRoot.comment.account).to.be.null
        expect(deletedChildRoot.children).to.have.lengthOf(1)

        const answerToDeletedChild = deletedChildRoot.children[0]
        expect(answerToDeletedChild.comment).to.not.be.undefined
        expect(answerToDeletedChild.comment.inReplyToCommentId).to.equal(deletedChildRoot.comment.id)
        expect(answerToDeletedChild.comment.text).to.equal('my second answer to deleted')
        expect(answerToDeletedChild.comment.account.name).to.equal('root')

        expect(commentRoot.comment).to.not.be.undefined
        expect(commentRoot.comment.inReplyToCommentId).to.equal(deletedComment.id)
        expect(commentRoot.comment.text).to.equal('answer to deleted')
        expect(commentRoot.comment.account.name).to.equal('root')
      }
    })

    it('Should have propagated captions', async function () {
      const body = await servers[0].captions.list({ videoId: video4.id })
      expect(body.total).to.equal(1)
      expect(body.data).to.have.lengthOf(1)

      const caption1 = body.data[0]
      expect(caption1.language.id).to.equal('ar')
      expect(caption1.language.label).to.equal('Arabic')
      expect(caption1.captionPath).to.match(new RegExp('^/lazy-static/video-captions/.+-ar.vtt$'))
      await testCaptionFile(servers[0].url, caption1.captionPath, 'Subtitle good 2.')
    })

    it('Should unfollow server 3 on server 1 and does not list server 3 videos', async function () {
      this.timeout(5000)

      await servers[0].follows.unfollow({ target: servers[2] })

      await waitJobs(servers)

      const { total } = await servers[0].videos.list()
      expect(total).to.equal(1)
    })
  })

  describe('Should propagate data on a new channel follow', function () {

    before(async function () {
      this.timeout(60000)

      await servers[2].videos.upload({ attributes: { name: 'server3-7' } })

      await waitJobs(servers)

      const video = await servers[0].videos.find({ name: 'server3-7' })
      expect(video).to.not.exist
    })

    it('Should have propagated channel video', async function () {
      this.timeout(60000)

      await servers[0].follows.follow({ handles: [ 'root_channel@' + servers[2].host ] })

      await waitJobs(servers)

      const video = await servers[0].videos.find({ name: 'server3-7' })

      expect(video).to.exist
    })
  })

  after(async function () {
    await cleanupTests(servers)
  })
})