<template>
  <!-- 悬浮按钮 - 任务中心入口 -->
  <div class="task-fab" :class="{ 'has-running': runningCount > 0, 'attention': attention }" @click="handleClick">
    <div class="fab-icon">
      <el-icon :size="24"><List /></el-icon>
    </div>
    <span v-if="runningCount > 0" class="fab-badge">{{ runningCount }}</span>
    <div class="fab-ripple" v-if="attention"></div>
  </div>
</template>

<script setup>
import { computed, ref, watch } from 'vue'
import { List } from '@element-plus/icons-vue'
import { useTaskCenterStore } from '@/stores/taskCenter'

const store = useTaskCenterStore()
const attention = ref(false)

const runningCount = computed(() => store.runningCount)

function handleClick() {
  store.toggleOpen()
}

// 当有新任务开始时，显示注意动画
watch(() => store.runningTotal, (newVal, oldVal) => {
  if (newVal > oldVal) {
    attention.value = true
    setTimeout(() => {
      attention.value = false
    }, 2000)
  }
})
</script>

<style scoped>
.task-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 3999;
}

.task-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(102, 126, 234, 0.5);
}

.task-fab.has-running {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  box-shadow: 0 4px 20px rgba(79, 172, 254, 0.4);
  animation: pulse 2s infinite;
}

.task-fab.attention {
  animation: bounce 0.5s ease-in-out;
}

.fab-icon {
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fab-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: #f56c6c;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(245, 108, 108, 0.4);
}

.fab-ripple {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  animation: ripple 1s ease-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(79, 172, 254, 0.4);
  }
  50% {
    box-shadow: 0 4px 30px rgba(79, 172, 254, 0.6);
  }
}

@keyframes bounce {
  0%, 100% {
    transform: scale(1);
  }
  25% {
    transform: scale(1.2);
  }
  50% {
    transform: scale(0.95);
  }
  75% {
    transform: scale(1.1);
  }
}

@keyframes ripple {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}
</style>
