// Author: fruit.com.cn

import type {
  MediaTranscodeLadderRung,
  MediaTranscodeProfile,
  MediaTranscodeSprite
} from '@/api/admin/types'

export const MIN_SEGMENT_SECONDS = 2
export const MAX_SEGMENT_SECONDS = 10
export const MIN_SPRITE_INTERVAL = 1
export const MAX_SPRITE_INTERVAL = 10
export const MIN_SPRITE_COLUMNS = 5
export const MAX_SPRITE_COLUMNS = 20
export const MIN_THUMB_WIDTH = 120
export const MAX_THUMB_WIDTH = 240
export const MAX_QUALITY_LENGTH = 16

export const defaultSprite = (): MediaTranscodeSprite => ({
  enabled: true,
  intervalSeconds: 1,
  columns: 10,
  thumbWidth: 160
})

export const defaultRung = (): MediaTranscodeLadderRung => ({
  quality: '',
  width: 640,
  height: 360,
  videoBitrateKbps: 400,
  audioBitrateKbps: 64,
  enabled: true
})

/** 与后端缺省值一致的四档配置。 */
export const defaultProfile = (): MediaTranscodeProfile => ({
  enabled: true,
  segmentSeconds: 6,
  ladder: [
    {
      quality: '360p',
      width: 640,
      height: 360,
      videoBitrateKbps: 400,
      audioBitrateKbps: 64,
      enabled: true
    },
    {
      quality: '480p',
      width: 854,
      height: 480,
      videoBitrateKbps: 800,
      audioBitrateKbps: 64,
      enabled: true
    },
    {
      quality: '720p',
      width: 1280,
      height: 720,
      videoBitrateKbps: 1600,
      audioBitrateKbps: 96,
      enabled: true
    },
    {
      quality: '1080p',
      width: 1920,
      height: 1080,
      videoBitrateKbps: 3200,
      audioBitrateKbps: 128,
      enabled: true
    }
  ],
  sprite: defaultSprite()
})