<script lang="ts" setup>
import { computed, onMounted, ref } from 'vue'
import { useRoute } from 'vue-router'
import CompetitionLayout from '@/components/custom/user/CompetitionLayout.vue'
import { useRouterPush } from '@/hooks/common/router'
import { fetchGetTeamListByGroupId } from '@/service/api/competition'

const { routerPushByKey, routerBack } = useRouterPush()
const route = useRoute()

interface TeamItem {
  id: number
  name: string
  icon: string
}

const teams = ref<TeamItem[]>([])
const loading = ref(false)
const activityId = (route.query?.activityId) as string || ''
const groupsId = (route.query?.groupsId) as string || ''
const teamIds = ref<number[]>([])

const RoundType = computed(() => Number(route.query?.RoundType || 0))

async function getTeams() {
  if (!groupsId)
    return

  loading.value = true
  try {
    const { data, error } = await fetchGetTeamListByGroupId(Number(groupsId))
    if (error) {
      window?.$message?.error(error.message)
      return
    }
    const list = data?.data || []
    if (list && Array.isArray(list)) {
      teams.value = list.map((item: any) => ({
        id: item.Id,
        name: item.Name,
        icon: 'star', // Default icon
      }))
      teamIds.value = list.map((item: any) => item.Id)
    }
  }
  finally {
    loading.value = false
  }
}

const showBackground = ref(false)
const showTitle = ref(false)
const showList = ref(false)

function handleBack() {
  routerBack()
}

function handleNext() {
  // 进入规则页面
  // routerPushByKey('user_rules')
  routerPushByKey('user_cover', { query: { activityId, groupsId, teamIds: teamIds.value.join(','), RoundType: RoundType.value } })
}

function selectTeam(_id: number) {
  // 选择队伍逻辑
  routerPushByKey('user_cover', { query: { activityId, groupsId, teamId: _id, teamIds: teamIds.value.join(','), RoundType: RoundType.value } })
}

onMounted(() => {
  getTeams()
  // 1. 背景卷轴展开 - 稍微慢一点开始，给人一种准备的感觉
  setTimeout(() => {
    showBackground.value = true
  }, 300)

  // 2. 标题浮现 - 等卷轴展开一大半再出来 (卷轴动画约 3s，这里设为 2000ms)
  setTimeout(() => {
    showTitle.value = true
  }, 2000)

  // 3. 列表出现 - 等卷轴完全展开并定住后再出 (卷轴动画结束需 3s，这里给 3200ms)
  setTimeout(() => {
    showList.value = true
  }, 2500)
})
</script>

<template>
  <CompetitionLayout :show-back="true" :show-next="true" next-btn-text="下一步" :show-title="false" @next="handleNext" @back="handleBack">
    <!-- Scroll Content -->
    <div class="scroll-container">
      <!-- 卷轴背景动画容器 -->
      <Transition name="scroll-expand">
        <div v-if="showBackground" class="scroll-body">
          <!-- Title Section inside Scroll -->
          <Transition name="fade-slide-down">
            <div v-if="showTitle" class="title-section">
              <div class="scroll-bg">
                <span class="main-title text-4xl text-#22685a">
                  队伍名单
                </span>
              </div>
            </div>
          </Transition>

          <div class="scroll-content">
            <TransitionGroup name="list-anim" tag="div" class="teams-grid">
              <div
                v-for="(item, index) in showList ? teams : []" :key="item.id" class="team-item"
                :style="{ '--delay': `${index * 0.4}s` }" @click="selectTeam(item.id)"
              >
                <div class="icon-wrapper">
                  <img src="@/assets/imgs/user/team-title-icon.svg" alt="team-icon" class="h-full w-full object-cover">
                </div>
                <div class="team-name">
                  {{ item.name }}
                </div>
              </div>
            </TransitionGroup>
          </div>
          <div class="scroll-right-decor" />
        </div>
      </Transition>
    </div>
  </CompetitionLayout>
</template>

<style lang="scss" scoped>
// 卷轴展开动画 - 变得更慢更优雅
.scroll-expand-enter-active {
  transition: clip-path 3s cubic-bezier(0.25, 1, 0.5, 1);
  overflow: hidden;
}

.scroll-expand-leave-active {
  transition: clip-path 1.5s ease;
}

.scroll-expand-enter-from,
.scroll-expand-leave-to {
  clip-path: inset(0 50% 0 50%);
}

.scroll-expand-enter-to,
.scroll-expand-leave-from {
  clip-path: inset(0 0 0 0);
}

// 标题进场动画 - 更加缓慢浮现
.fade-slide-down-enter-active {
  transition: all 1.2s ease-out;
}

.fade-slide-down-enter-from {
  opacity: 0;
  transform: translateY(-40px);
}

// 列表进场动画 (使用 keyframes 实现更丝滑的渐入)
.list-anim-enter-active {
  animation: list-enter 1s cubic-bezier(0.23, 1, 0.32, 1) both; // both 模式确保动画前后状态保留
  animation-delay: var(--delay);
}

@keyframes list-enter {
  0% {
    opacity: 0;
    transform: translateY(80px) scale(0.9);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.title-section {
  position: absolute;
  top: 18%; // 使用百分比定位，适应不同比例
  left: 7%; // 微调位置，根据 1920x1080 下的视觉效果调整
  z-index: 10;

  .scroll-bg {
    .main-title {
      margin: 0;
      writing-mode: vertical-rl; // 竖排文字
      letter-spacing: 20px;
      text-align: center;
      font-weight: 900;
      font-family: 'KaiTi', 'STKaiti', serif; // 尝试使用楷体增加古风感
    }
  }
}

.competition-layout :deep(.main-content) {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.scroll-container {
  width: 80%;
  height: 70%;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  // border: 1px solid red;
}

.scroll-body {
  width: 100%;
  height: 781px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('@/assets/imgs/user/team-bg-animation.svg') no-repeat center center;
  background-size: 100% 100%;
  transform-origin: center; // 确保从中心展开
  will-change: clip-path; // 优化性能

  &::before {
    left: -15px;
  }

  &::after {
    right: -15px;
  }
}

.scroll-content {
  width: 80%;
  height: 80%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.teams-grid {
  display: flex;
  gap: 60px;
  justify-content: center;
}

.team-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: transform 0.3s;

  &:hover {
    transform: translateY(-5px);
  }

  .icon-wrapper {
    width: 140px;
    height: 140px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    // background: url('@/assets/imgs/team-icon-bg.svg') no-repeat center center;
    background-size: contain;
    margin-bottom: 10px;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
  }

  .team-name {
    font-size: 1.5rem;
    color: #333;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
    background: url('@/assets/imgs/user/team-title-bg.svg') no-repeat center center;
    background-size: contain;
    padding: 15px 30px;
    border-radius: 10px;
  }
}
</style>
