<script setup lang="ts">
import type { PropType } from 'vue'
import dayjs from 'dayjs'
import { useDownload } from '~/composables/useDownload'
import gsap from 'gsap'

const toast = useToast()
const { metaSymbol } = useShortcuts()

const props = defineProps({
  course: {
    type: Object as PropType<resp.gen.CourseGenItem>,
    required: true,
  },
})
const emit = defineEmits([
  'delete',
])

defineShortcuts({
  'p': {
    handler: () => {
      if (isDropdownOpen.value && isDownloadable.value) {
        isPreviewModalOpen.value = true
      }
    },
  },
  'meta_s': {
    handler: () => {
      if (isDropdownOpen.value && isDownloadable.value) {
        startDownload(props.course.subtitle_url, `眩生花微课_${ props.course.title }_${ props.course.task_id }.srt`)
      }
    },
  },
  'delete': {
    handler: () => {
      if (isDropdownOpen.value) {
        emit('delete', props.course.task_id)
      }
    },
  },
})

const isDropdownOpen = ref(false)
const isPreviewModalOpen = ref(false)

const stateDisplay = computed(() => {
  if (props.course.progress === -1) return {
    color: 'red',
    text: '失败',
  }
  if (props.course.progress === 100) return {
    color: 'green',
    text: '完成',
  }
  return {
    color: 'blue',
    text: !!props.course.progress ? `${ tweenedGenerateProgress.value.toFixed(0) }%` : '队列中',
  }
})
const isFailed = computed(() => props.course.progress === -1)
const isDownloadable = computed(() => !isFailed.value && props.course.progress === 100)

const generateProgress = computed(() => {
  return props.course.progress || 0
})
const tweenedGenerateProgress = ref(0)
watch(generateProgress, (newValue) => {
  gsap.to(tweenedGenerateProgress, {
    duration: 5,
    value: newValue,
  })
}, {
  immediate: true,
})
watch(tweenedGenerateProgress, val => {
  console.log(val)
})

const downloadProgress = ref(0)

const startDownload = async (
  url: string,
  filename: string,
) => {
  downloadProgress.value = 0

  const {
    download,
    progressEmitter,
  } = useDownload(url, filename)

  progressEmitter.on('done', () => {
    downloadProgress.value = 100
    toast.add({
      title: '下载完成',
      description: '资源下载已完成',
      color: 'green',
      icon: 'i-tabler-check',
    })
  })

  progressEmitter.on('progress', (progress) => {
    downloadProgress.value = progress
  })

  progressEmitter.on('error', err => {
    downloadProgress.value = 0
    toast.add({
      title: '下载失败',
      description: err.message || '下载失败，未知错误',
      color: 'red',
      icon: 'i-tabler-alert-triangle',
    })
  })

  download()
}

const copyTaskId = () => {
  navigator.clipboard.writeText(props.course.task_id)
  toast.add({
    title: '复制成功',
    description: '已复制任务 ID',
    color: 'green',
    icon: 'i-tabler-check',
  })
}
</script>

<template>
  <div
    class="w-full rounded-xl border border-neutral-200 dark:border-neutral-700 hover:shadow transition overflow-hidden"
  >
    <div class="relative w-full aspect-video">
      <NuxtImg
        class="w-full aspect-video object-cover pointer-events-none absolute inset-0"
        v-if="!!course.video_cover"
        :src="course.video_cover"
        alt="image"
        loading="lazy"
      />
      <div
        v-else
        class="absolute inset-0 bg-gradient-to-br from-purple-400 to-primary-400 flex justify-center items-center"
      >
        <Icon
          v-if="isFailed"
          class="text-white text-[64px] opacity-50"
          name="i-tabler-alert-triangle"
        />
        <Icon v-else class="text-white text-[64px] animate-pulse" name="i-tabler-photo-video"/>
      </div>
      <div class="absolute inset-2 flex justify-end items-start">
        <UTooltip :prevent="course.progress > -1" :text="course.message || ''">
          <UBadge
            :color="stateDisplay.color"
            :variant="isFailed ? 'solid' : 'subtle'"
            class="shadow"
            size="sm"
          >
            <Icon
              v-if="isFailed"
              class="text-base mr-0.5"
              name="i-tabler-alert-triangle"
            />
            {{ stateDisplay.text }}
          </UBadge>
        </UTooltip>
      </div>
    </div>
    <div class="px-2 pt-1 pb-2 flex justify-between">
      <div class="flex-1 overflow-hidden pt-1">
        <h1
          :title="course.title"
          class="text-sm font-medium overflow-hidden text-ellipsis text-nowrap"
        >
          <Icon class="-mt-0.5 -ml-0.5 text-base" name="i-tabler-book-2"/>
          <span class="pl-0.5">{{ course.title }}</span>
        </h1>
        <p class="text-xs pt-0.5 text-neutral-400 space-x-2">
          <span>{{ dayjs(course.create_time * 1000).format('YYYY-MM-DD HH:mm:ss') }}</span>
          <button
            class="hover:text-primary font-medium"
            tabindex="-1"
            :title="course.task_id"
            @click="copyTaskId"
          >
            复制ID
          </button>
        </p>
      </div>
      <div class="flex items-center gap-1">
        <UButtonGroup>
          <UButton
            color="white"
            :disabled="!isDownloadable"
            :loading="downloadProgress > 0 && downloadProgress < 100"
            :label="downloadProgress > 0 && downloadProgress < 100 ? `${downloadProgress.toFixed(0)}%` : '下载'"
            leading-icon="i-tabler-download"
            size="xs"
            @click="startDownload(course.video_url, `眩生花微课_${ props.course.title }_${ props.course.task_id }.mp4`)"
          />
          <UDropdown
            v-model:open="isDropdownOpen"
            :items="[
              [{
                label: '预览课程',
                icon: 'i-tabler-play',
                shortcuts: ['P'],
                disabled: !isDownloadable,
                click: () => isPreviewModalOpen = true,
              }, {
                label: '查看字幕',
                icon: 'i-solar-subtitles-linear',
                shortcuts: [metaSymbol, 'D'],
                disabled: !isDownloadable,
              }, {
                label: '下载字幕',
                icon: 'i-tabler-file-download',
                shortcuts: [metaSymbol, 'S'],
                disabled: !isDownloadable,
                click: () => {
                  startDownload(course.subtitle_url, `眩生花微课_${ props.course.title }_${ props.course.task_id }.srt`)
                }
              }], [{
                label: '删除记录',
                icon: 'i-tabler-trash-x',
                shortcuts: ['Delete'],
                click: () => emit('delete', course.task_id)
              }],
            ]"
            :popper="{ placement: 'bottom-end' }"
          >
            <UButton
              :disabled="course.progress > 1 && course.progress < 100"
              color="white"
              size="xs"
              trailing-icon="i-tabler-dots"
            />
          </UDropdown>
        </UButtonGroup>
      </div>
    </div>
    <UModal
      v-model="isPreviewModalOpen"
    >
      <UCard :ui="{ ring: '', divide: 'divide-y divide-gray-100 dark:divide-gray-800' }">
        <template #header>
          <div class="flex items-center justify-between">
            <div class="text-base font-semibold leading-6 text-gray-900 dark:text-white overflow-hidden">
              <p>微课视频预览</p>
              <p class="text-xs text-blue-500 w-full overflow-hidden text-nowrap text-ellipsis">
                {{ course.title }}
              </p>
            </div>
            <UButton
              class="-my-1"
              color="gray"
              icon="i-tabler-x"
              variant="ghost"
              @click="isPreviewModalOpen = false"
            />
          </div>
        </template>

        <video
          class="w-full rounded shadow"
          controls
          autoplay
          :src="course.video_url"
        />
      </UCard>
    </UModal>
  </div>
</template>

<style scoped>

</style>