<template>
  <view v-if="pageCount == 1 || need" class="fixed-box"
    :style="[customContainerStyle, { 
      height: fixBtnShow ? '400rpx' : '320rpx',
      backgroundImage: bgUrl ? `url(${bgUrl})` : '',
      backgroundSize: 'cover'
    }]">

    <!-- AI 智能助手（优先显示） -->
    <view 
      v-if="fixBtnShow && enableAIChat"
      class="btn-item common-bg"
      @click="openAIChat"
      :style="{ backgroundImage: aiAgentimg ? `url(${aiAgentimg})` : '', backgroundSize: '100% 100%' }"
    >
      <text class="ai-icon" v-if="!aiAgentimg">🤖</text>
    </view>

    <!-- 普通客服（仅当未启用 AI 时显示） -->
    <template v-else-if="fixBtnShow">
      <!-- #ifdef MP-WEIXIN -->
      <button 
        class="btn-item common-bg" 
        hoverClass="none" 
        openType="contact"
        sessionFrom="weapp"
        showMessageCard="true"
        :style="[{ backgroundImage: kefuimg ? `url(${kefuimg})` : '', backgroundSize: '100% 100%' }, customButtonStyle]"
      >
        <text class="icox icox-kefu" v-if="!kefuimg"></text>
      </button>
      <!-- #endif -->

      <!-- #ifndef MP-WEIXIN -->
      <button 
        class="btn-item common-bg" 
        hoverClass="none" 
        @click="openKefuSelectPopup"
        :style="[{ backgroundImage: kefuimg ? `url(${kefuimg})` : '', backgroundSize: '100% 100%' }, customButtonStyle]"
      >
        <text class="icox icox-kefu" v-if="!kefuimg"></text>
      </button>
      <!-- #endif -->
    </template>

    <!-- 中英文切换按钮 -->
    <view 
      v-if="isLanguageSwitchEnabled && fixBtnShow"
      class="btn-item common-bg"
      @click="toggleLanguage"
    >
      <text>{{ currentLangDisplayName }}</text>
    </view>

    <!-- 电话按钮（始终显示） -->
    <view 
      v-if="fixBtnShow" 
      class="btn-item common-bg"
      @click="call()"
      :style="[{ backgroundImage: phoneimg ? `url(${phoneimg})` : '', backgroundSize: '100% 100%' }, customButtonStyle]"
    >
      <text class="iconfont icon-dianhua" v-if="!phoneimg"></text>
    </view>

  </view>
</template>

<script>
import { createCustomerService } from '@/common/js/customer-service.js';

export default {
  name: 'hover-nav',
  props: {
    need: { type: Boolean, default: false }
  },
  data() {
    return {
      pageCount: 0,
      fixBtnShow: true,
      shopInfo: null,
      currentLangIndex: 0,
      langIndexMap: {},
      kefuList: [
        { id: 'weixin-official', name: '微信官方客服', isOfficial: true, type: 'weapp' },
        { id: 'custom-kefu', name: '自定义在线客服', isOfficial: false, type: 'custom' },
        { id: 'qyweixin-kefu', name: '企业微信客服', isOfficial: false, type: 'qyweixin' }
      ],
      selectedKefu: null,
      customerService: null,
      buttonConfig: null,
    };
  },
  computed: {
    // 安全读取 shopInfo 中的字段，避免 undefined 报错
    bgUrl() {
      return this.shopInfo?.bgUrl || '';
    },
    aiAgentimg() {
      return this.shopInfo?.aiAgentimg || '';
    },
    kefuimg() {
      return this.shopInfo?.kefuimg || this.$util.getDefaultImage().kefu;
    },
    phoneimg() {
      return this.shopInfo?.phoneimg || this.$util.getDefaultImage().phone;
    },
    tel() {
      return this.shopInfo?.mobile || '';
    },
    isLanguageSwitchEnabled() {
      return !!this.shopInfo?.ischina;
    },
    enableAIChat() {
      const defaultEnable = true;
      if (!this.shopInfo) return defaultEnable;
      return this.shopInfo.hasOwnProperty('enableAIChat')
        ? !!this.shopInfo.enableAIChat
        : defaultEnable;
    },

    currentLangDisplayName() {
      const lang = this.langIndexMap[this.currentLangIndex];
      return lang === 'zh-cn' ? 'EN' : 'CN';
    },
    customContainerStyle() {
      return this.shopInfo?.floatingButton?.container || {};
    },
    customButtonStyle() {
      return this.shopInfo?.floatingButton?.button || {};
    },
    customTextStyle() {
      return this.shopInfo?.floatingButton?.text || {};
    },
    unreadCount() {
      return this.$store.state.aiUnreadCount || 0;
    }
  },
  watch: {
    shopInfo: {
      handler(newVal) {
        // 可在此添加额外逻辑（如埋点、通知等），当前无需操作
      },
      immediate: true
    }
  },
  created() {
    this.initLanguage();
    this.pageCount = getCurrentPages().length;

    uni.getStorage({
      key: 'shopInfo',
      success: (e) => {
        console.log('【调试】当前 shopInfo:', e.data);
        this.shopInfo = e.data;
      },
      fail: () => {
        console.warn('未获取到 shopInfo，使用默认设置');
        // shopInfo 为 null，computed 会自动返回默认值，无需手动赋值
      }
    });
  },
  methods: {
    initLanguage() {
      this.langList = this.$langConfig.list();
      this.langIndexMap = {};
      for (let i = 0; i < this.langList.length; i++) {
        this.langIndexMap[i] = this.langList[i].value;
      }
      const savedLang = uni.getStorageSync('lang');
      if (savedLang) {
        for (let i = 0; i < this.langList.length; i++) {
          if (this.langList[i].value === savedLang) {
            this.currentLangIndex = i;
            break;
          }
        }
      } else {
        this.currentLangIndex = 0;
      }
    },
    call() {
      if (this.tel) {
        uni.makePhoneCall({ phoneNumber: this.tel + '' });
      } else {
        uni.showToast({ title: '暂无联系电话', icon: 'none' });
      }
    },
    /**
     * 切换中英文语言，并刷新当前页面（保留所有参数）
     */
   toggleLanguage() {
     this.currentLangIndex = this.currentLangIndex === 0 ? 1 : 0;
     const targetLang = this.langIndexMap[this.currentLangIndex];
   
     // 调用语言切换逻辑（设置 storage + 清空缓存）
     this.$langConfig.change(targetLang);
   
     // H5 环境需要强制刷新页面才能生效
     if (uni.getSystemInfoSync().platform === 'browser') {
       // 延迟 100ms 确保 change() 执行完成
       setTimeout(() => {
         window.location.reload();
       }, 100);
     }
   },
    openKefuSelectPopup() {
      const kefuNames = this.kefuList.map(item => item.name);
      uni.showActionSheet({
        itemList: kefuNames,
        success: (res) => {
          this.selectedKefu = this.kefuList[res.tapIndex];
          this.reinitCustomerService(this.selectedKefu);
          this.handleSelectedKefu();
        }
      });
    },
    reinitCustomerService(kefu) {
      this.customerService = createCustomerService(this, kefu);
      this.buttonConfig = this.customerService.getButtonConfig();
    },
    handleSelectedKefu() {
      const kefu = this.selectedKefu;
      if (!kefu) return;

      if (kefu.isOfficial) {
        uni.openCustomerServiceConversation({
          sessionFrom: 'weapp',
          showMessageCard: true
        });
      } else if (kefu.id === 'custom-kefu') {
        this.customerService.handleCustomerClick();
      } else if (kefu.id === 'qyweixin-kefu') {
        this.customerService.handleQyWeixinKefuClick();
      }
    },
    openAIChat() {
      uni.navigateTo({
        url: '/pages_tool/ai-chat/index',
        success: () => {
          console.log('✅ AI 客服跳转成功');
        },
        fail: (err) => {
          console.error('❌ 跳转失败:', err);
          uni.showToast({ title: '跳转失败，请重试', icon: 'none' });
        }
      });
    }
  }
}
</script>

<style scoped>
.fixed-box {
  position: fixed;
  right: 0rpx;
  bottom: 240rpx;
  /* #ifdef H5 */
  bottom: 320rpx;
  /* #endif */
  z-index: 10;
  border-radius: 120rpx;
  padding: 20rpx 0;
  display: flex;
  justify-content: center;
  flex-direction: column;
  width: 100rpx;
  box-sizing: border-box;
  transition: 0.3s;
  overflow: hidden;
}

.btn-item {
  display: flex;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  line-height: 1;
  margin: 14rpx 0;
  transition: 0.1s;
  color: var(--hover-nav-text-color);
  border-radius: 40rpx;
  width: 80rpx;
  height: 80rpx;
  padding: 0;
  overflow: hidden;
}

/* 定义共同的背景颜色 */
.common-bg {
  background-color: var(--hover-nav-bg-color); /* 使用变量以保持一致性 */
}

.btn-item text {
  font-size: 28rpx;
}

.iconfont,
.icox {
  font-size: 36rpx;
  font-weight: bold;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 14rpx 0;
  background: #fff;
  border-radius: 50rpx;
  width: 80rpx;
  height: 80rpx;
  padding: 0;
  position: relative;
}

.iconfont text,
.icox text {
  font-size: 36rpx;
  font-weight: bold;
}

.unread-badge {
  position: absolute;
  top: -5rpx;
  right: -5rpx;
  background-color: #ff4544;
  color: white;
  border-radius: 20rpx;
  min-width: 30rpx;
  height: 30rpx;
  font-size: 20rpx;
  line-height: 30rpx;
  text-align: center;
  padding: 0 8rpx;
  box-shadow: 0 2rpx 10rpx rgba(255, 69, 68, 0.3);
}

.ai-icon {
  font-size: 40rpx;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
</style>