import { defineStore } from 'pinia'
import { ref } from 'vue'
import type { VideoInfo, PlayRecord } from '@/types'
import { videoApi } from '@/api/video.ts'

export const useVideoStore = defineStore('video', () => {
  // 当前播放的视频
  const currentVideo = ref<VideoInfo | null>(null)

  // 播放进度
  const playProgress = ref<number>(0)

  // 播放历史（本地存储）
  const playHistory = ref<PlayRecord[]>([])

  // 是否正在播放
  const isPlaying = ref(false)

  // 弹幕开关
  const danmakuEnabled = ref(true)

  // 音量
  const volume = ref(0.8)

  // 播放速度
  const playbackRate = ref(1)

  // 设置当前视频
  function setCurrentVideo(video: VideoInfo | null) {
    currentVideo.value = video
  }

  // 更新播放进度
  function updateProgress(progress: number) {
    playProgress.value = progress
  }

  // 切换播放状态
  function togglePlaying(playing: boolean) {
    isPlaying.value = playing
  }

  // 切换弹幕
  function toggleDanmaku(enabled: boolean) {
    danmakuEnabled.value = enabled
  }

  // 设置音量
  function setVolume(vol: number) {
    volume.value = vol
  }

  // 设置播放速度
  function setPlaybackRate(rate: number) {
    playbackRate.value = rate
  }

  // 记录播放
  async function recordPlay(videoId: number, progress: number, duration: number) {
    try {
      await videoApi.recordPlay({ videoId, progress, duration })

      // 更新本地播放历史
      const index = playHistory.value.findIndex(item => item.videoId === videoId)
      const record: PlayRecord = { videoId, progress, duration }

      if (index >= 0) {
        playHistory.value[index] = record
      } else {
        playHistory.value.unshift(record)
        // 最多保存100条记录
        if (playHistory.value.length > 100) {
          playHistory.value = playHistory.value.slice(0, 100)
        }
      }
    } catch (error) {
      console.error('记录播放失败:', error)
    }
  }

  // 获取播放进度
  function getPlayProgress(videoId: number): number {
    const record = playHistory.value.find(item => item.videoId === videoId)
    return record?.progress || 0
  }

  // 清除当前视频
  function clearCurrentVideo() {
    currentVideo.value = null
    playProgress.value = 0
    isPlaying.value = false
  }

  return {
    // 状态
    currentVideo,
    playProgress,
    playHistory,
    isPlaying,
    danmakuEnabled,
    volume,
    playbackRate,
    // 方法
    setCurrentVideo,
    updateProgress,
    togglePlaying,
    toggleDanmaku,
    setVolume,
    setPlaybackRate,
    recordPlay,
    getPlayProgress,
    clearCurrentVideo
  }
}, {
  persist: {
    paths: ['playHistory', 'danmakuEnabled', 'volume', 'playbackRate']
  }
})