import { remove } from 'fs-extra'
import { join } from 'path'
import { buildUUID } from '@shared/extra-utils'
import {
  RunnerJobVODAudioMergeTranscodingPayload,
  RunnerJobVODHLSTranscodingPayload,
  RunnerJobVODWebVideoTranscodingPayload,
  VODAudioMergeTranscodingSuccess,
  VODHLSTranscodingSuccess,
  VODWebVideoTranscodingSuccess
} from '@shared/models'
import { ConfigManager } from '../../../shared/config-manager'
import { buildFFmpegVOD, downloadInputFile, ProcessOptions } from './common'

export async function processWebVideoTranscoding (options: ProcessOptions<RunnerJobVODWebVideoTranscodingPayload>) {
  const { server, job, runnerToken } = options
  const payload = job.payload

  const inputPath = await downloadInputFile({ url: payload.input.videoFileUrl, runnerToken, job })

  const ffmpegVod = buildFFmpegVOD({ job, server, runnerToken })

  const outputPath = join(ConfigManager.Instance.getTranscodingDirectory(), `output-${buildUUID()}.mp4`)

  await ffmpegVod.transcode({
    type: 'video',

    inputPath,

    outputPath,

    inputFileMutexReleaser: () => {},

    resolution: payload.output.resolution,
    fps: payload.output.fps
  })

  const successBody: VODWebVideoTranscodingSuccess = {
    videoFile: outputPath
  }

  await server.runnerJobs.success({
    jobToken: job.jobToken,
    jobUUID: job.uuid,
    runnerToken,
    payload: successBody
  })

  await remove(outputPath)
}

export async function processHLSTranscoding (options: ProcessOptions<RunnerJobVODHLSTranscodingPayload>) {
  const { server, job, runnerToken } = options
  const payload = job.payload

  const inputPath = await downloadInputFile({ url: payload.input.videoFileUrl, runnerToken, job })
  const uuid = buildUUID()

  const outputPath = join(ConfigManager.Instance.getTranscodingDirectory(), `${uuid}-${payload.output.resolution}.m3u8`)
  const videoFilename = `${uuid}-${payload.output.resolution}-fragmented.mp4`
  const videoPath = join(join(ConfigManager.Instance.getTranscodingDirectory(), videoFilename))

  const ffmpegVod = buildFFmpegVOD({ job, server, runnerToken })

  await ffmpegVod.transcode({
    type: 'hls',
    copyCodecs: false,
    inputPath,
    hlsPlaylist: { videoFilename },
    outputPath,

    inputFileMutexReleaser: () => {},

    resolution: payload.output.resolution,
    fps: payload.output.fps
  })

  const successBody: VODHLSTranscodingSuccess = {
    resolutionPlaylistFile: outputPath,
    videoFile: videoPath
  }

  await server.runnerJobs.success({
    jobToken: job.jobToken,
    jobUUID: job.uuid,
    runnerToken,
    payload: successBody
  })

  await remove(outputPath)
  await remove(videoPath)
}

export async function processAudioMergeTranscoding (options: ProcessOptions<RunnerJobVODAudioMergeTranscodingPayload>) {
  const { server, job, runnerToken } = options
  const payload = job.payload

  const audioPath = await downloadInputFile({ url: payload.input.audioFileUrl, runnerToken, job })
  const inputPath = await downloadInputFile({ url: payload.input.previewFileUrl, runnerToken, job })

  const outputPath = join(ConfigManager.Instance.getTranscodingDirectory(), `output-${buildUUID()}.mp4`)

  const ffmpegVod = buildFFmpegVOD({ job, server, runnerToken })

  await ffmpegVod.transcode({
    type: 'merge-audio',

    audioPath,
    inputPath,

    outputPath,

    inputFileMutexReleaser: () => {},

    resolution: payload.output.resolution,
    fps: payload.output.fps
  })

  const successBody: VODAudioMergeTranscodingSuccess = {
    videoFile: outputPath
  }

  await server.runnerJobs.success({
    jobToken: job.jobToken,
    jobUUID: job.uuid,
    runnerToken,
    payload: successBody
  })

  await remove(outputPath)
}