<script lang="ts" setup>
import CGTaskCard from '~/components/aigc/course-generate/CGTaskCard.vue'
import FileDnD from '~/components/uni/FileDnD/index.vue'
import { useFetchWrapped } from '~/composables/useFetchWrapped'
import { type InferType, number, object, string } from 'yup'
import type { FormSubmitEvent } from '#ui/types'
import ModalAuthentication from '~/components/ModalAuthentication.vue'

const toast = useToast()
const modal = useModal()
const loginState = useLoginState()

const isCreateCourseModalOpen = ref(false)
const creationPending = ref(false)
const deletePending = ref(false)

const {
  data: courseList,
  pending: courseListPending,
  refresh: refreshCourseList,
} = useAsyncData(
  () => useFetchWrapped<
    req.gen.CourseGenList & AuthedRequest,
    BaseResponse<PagedData<resp.gen.CourseGenItem>>
  >('App.Digital_Convert.GetList', {
    token: loginState.token!,
    user_id: loginState.user.id,
    to_user_id: loginState.user.id,
    page: 1,
    perpage: 10,
  }), {
    transform: res => res?.data.items || [],
  },
)

const onCreateCourseClick = () => {
  isCreateCourseModalOpen.value = true
}

const createCourseSchema = object({
  task_title: string().trim().min(4, '标题必须大于4个字符').max(20, '标题不能超过20个字符').required('请输入微课标题'),
  gen_server: string().required(),
  speed: number().default(1.0).min(0.5).max(1.5).required(),
})

type CreateCourseSchema = InferType<typeof createCourseSchema>

const createCourseState = reactive({
  task_title: undefined,
  gen_server: 'main',
  speed: 1.0,
})

const selected_file = ref<File[] | null>(null)

const onCreateCourseSubmit = async (event: FormSubmitEvent<CreateCourseSchema>) => {
  console.log(event.data)
  if (!selected_file.value) {
    toast.add({
      title: '未选择文件',
      description: '请先选择 PPTX 文件',
      color: 'red',
      icon: 'i-tabler-alert-triangle',
    })
    return
  }
  creationPending.value = true
  // upload PPTX file
  useFileGo(selected_file.value[0]).then(url => {
    useFetchWrapped<req.gen.CourseGenCreate & AuthedRequest, BaseResponse<resp.gen.CourseGenCreate>>('App.Digital_Convert.Create', {
      token: loginState.token!,
      user_id: loginState.user.id,
      task_title: event.data.task_title,
      gen_server: event.data.gen_server as 'main' | 'standby1',
      speed: 2 - event.data.speed,
      ppt_url: url,
      digital_human_id: 40696,
      custom_video: '[]',
      opening_url: '',
      ending_url: '',
    }).then(res => {
      if (res.data.record_status === 1) {
        toast.add({
          title: '创建成功',
          description: '微课视频已开始生成',
          color: 'green',
          icon: 'i-tabler-check',
        })
        refreshCourseList()
        isCreateCourseModalOpen.value = false
      } else {
        toast.add({
          title: '创建失败',
          description: res.msg || '未知错误',
          color: 'red',
          icon: 'i-tabler-alert-triangle',
        })
      }
      creationPending.value = false
    }).catch(e => {
      creationPending.value = false
      toast.add({
        title: '创建失败',
        description: e.message || '未知错误',
        color: 'red',
        icon: 'i-tabler-alert-triangle',
      })
    })
  })
}

const onCourseDelete = (task_id: string) => {
  if (!task_id) return
  deletePending.value = true
  useFetchWrapped<
    req.gen.CourseGenDelete & AuthedRequest,
    BaseResponse<resp.gen.CourseGenDelete>
  >('App.Digital_Convert.Delete', {
    token: loginState.token!,
    user_id: loginState.user.id,
    to_user_id: loginState.user.id,
    task_id,
  }).then(res => {
    if (res.ret === 200) {
      toast.add({
        title: '删除成功',
        description: '已删除任务记录',
        color: 'green',
        icon: 'i-tabler-check',
      })
    } else {
      toast.add({
        title: '删除失败',
        description: res.msg || '未知错误',
        color: 'red',
        icon: 'i-tabler-alert-triangle',
      })
    }
  }).finally(() => {
    deletePending.value = false
    refreshCourseList()
  })
}

onMounted(() => {
  const i = setInterval(refreshCourseList, 1000 * 5)
  onBeforeUnmount(() => clearInterval(i))
})
</script>

<template>
  <div class="font-sans h-full">
    <div class="p-4 border-b dark:border-neutral-700">
      <UButton
        :trailing="false"
        color="primary"
        icon="i-tabler-plus"
        label="新建微课"
        size="md"
        variant="solid"
        @click="() => {
          if (!loginState.is_logged_in) {
            modal.open(ModalAuthentication)
            return
          }
          onCreateCourseClick()
        }"
      />
    </div>
    <Transition name="loading-screen">
      <div v-if="!loginState.is_logged_in" class="w-full h-full">
        <div class="w-full h-full flex flex-col justify-center items-center gap-2 bg-neutral-100 dark:bg-neutral-900">
          <Icon name="i-tabler-user-circle" class="text-7xl text-neutral-300 dark:text-neutral-700"/>
          <p class="text-sm text-neutral-500 dark:text-neutral-400">请登录后使用</p>
          <UButton class="mt-2 font-bold" color="black" variant="solid" size="xs"
                   @click="modal.open(ModalAuthentication)">
            登录
          </UButton>
        </div>
      </div>
      <div v-else-if="courseList?.length === 0"
           class="w-full h-full flex flex-col justify-center items-center gap-2 bg-neutral-100 dark:bg-neutral-900">
        <Icon name="i-tabler-photo-hexagon" class="text-7xl text-neutral-300 dark:text-neutral-700"/>
        <p class="text-sm text-neutral-500 dark:text-neutral-400">
          没有记录
        </p>
      </div>
      <div v-else class="p-4">
        <div class="relative grid grid-cols-1 sm:grid-cols-2 xl:grid-cols-3 2xl:grid-cols-4 gap-4">
          <TransitionGroup name="card">
            <CGTaskCard
              v-for="(course, index) in courseList"
              :key="course.task_id || 'unknown' + index"
              :course="course"
              @delete="task_id => onCourseDelete(task_id)"
            />
          </TransitionGroup>
        </div>
      </div>
    </Transition>

    <UModal
      v-model="isCreateCourseModalOpen"
      prevent-close
    >
      <UCard :ui="{ ring: '', divide: 'divide-y divide-gray-100 dark:divide-gray-800' }">
        <template #header>
          <div class="flex items-center justify-between">
            <h3 class="text-base font-semibold leading-6 text-gray-900 dark:text-white">
              新建微课视频
            </h3>
            <UButton
              class="-my-1"
              color="gray"
              icon="i-tabler-x"
              variant="ghost"
              @click="isCreateCourseModalOpen = false"
            />
          </div>
        </template>

        <UForm
          :schema="createCourseSchema"
          :state="createCourseState"
          class="space-y-4"
          @submit="onCreateCourseSubmit"
        >
          <div class="flex justify-between gap-2 *:flex-1">
            <UFormGroup label="微课标题" name="task_title">
              <UInput v-model="createCourseState.task_title" placeholder="请输入微课标题"/>
            </UFormGroup>

            <UFormGroup label="生成线路" name="gen_server">
              <USelectMenu
                v-model="createCourseState.gen_server"
                :options="[{
                  label: '主线路',
                  value: 'main',
                }, {
                  label: '备用线路',
                  value: 'standby1',
                }]"
                option-attribute="label"
                value-attribute="value"
              />
            </UFormGroup>
          </div>

          <UFormGroup :label="`视频倍速：${createCourseState.speed}`" name="speed">
            <URange
              v-model="createCourseState.speed"
              :max="1.5"
              :min="0.5"
              :step="0.1"
              class="pt-4"
              size="sm"
            />
          </UFormGroup>

          <UFormGroup label="PPT 文件">
            <FileDnD
              accept="application/vnd.openxmlformats-officedocument.presentationml.presentation"
              @change="file => selected_file = file"
            />
          </UFormGroup>

          <div class="flex justify-end space-x-4 pt-4">
            <UButton
              color="gray"
              label="取消"
              variant="ghost"
              @click="isCreateCourseModalOpen = false"
            />
            <UButton
              color="primary"
              label="提交"
              type="submit"
              variant="solid"
              :loading="creationPending"
            />
          </div>
        </UForm>
      </UCard>
    </UModal>
  </div>
</template>

<style scoped>
.loading-screen-leave-active {
  @apply transition duration-300;
}

.loading-screen-leave-to {
  @apply opacity-0;
}

.card-enter-active, .card-leave-active {
  transition: opacity 0.5s;
}

.card-enter, .card-leave-to {
  opacity: 0;
}

.card-enter-to, .card-leave {
  opacity: 1;
}
</style>