<template>
  <view :class="themeClass" class="page-container login-page">
    <!-- 顶部品牌区 -->
    <view class="brand-area">
      <view class="brand-glow"></view>
      <view class="brand-icon">
        <text class="brand-emoji">🍻</text>
      </view>
      <text class="brand-name">干杯日记</text>
      <text class="brand-slogan">让每一杯酒都有迹可循</text>
    </view>

    <!-- 登录区域 -->
    <view class="login-area">
      <!-- 理性饮酒须知 -->
      <view v-if="showNotice" class="notice-card card">
        <view class="notice-header">
          <text class="notice-icon">📋</text>
          <text class="notice-title">理性饮酒须知</text>
        </view>
        <view class="notice-content">
          <text class="notice-item">• 过量饮酒有害健康，请理性记录</text>
          <text class="notice-item">• 本应用不鼓励未成年人使用</text>
          <text class="notice-item">• 不涉及任何酒类销售与推荐</text>
          <text class="notice-item">• 您的数据仅用于个人记录</text>
        </view>
        <button class="btn-primary notice-btn" @click="acceptNotice">我已了解</button>
      </view>

      <!-- 主登录区域 -->
      <view v-else class="login-actions">
        <!-- 头像 + 昵称填写（微信新规范） -->
        <view class="profile-form card">
          <view class="form-title-row">
            <text class="form-title">完善你的资料</text>
          </view>

          <!-- 头像选择 -->
          <view class="avatar-row">
            <text class="form-label">头像</text>
            <button class="avatar-btn" open-type="chooseAvatar" @chooseavatar="onChooseAvatar">
              <image v-if="avatarUrl" class="avatar-preview" :src="avatarUrl" mode="aspectFill"></image>
              <view v-else class="avatar-placeholder">
                <text class="avatar-placeholder-icon">👤</text>
              </view>
              <text class="avatar-edit">{{ avatarUrl ? '换头像' : '选头像' }}</text>
            </button>
          </view>

          <!-- 昵称输入 -->
          <view class="nickname-row">
            <text class="form-label">昵称</text>
            <input
              type="nickname"
              class="nickname-input"
              v-model="nickname"
              placeholder="点击获取微信昵称"
              @blur="onNicknameBlur"
            />
          </view>
        </view>

        <!-- 确认登录 -->
        <button class="btn-cta login-btn" :loading="loginLoading" :disabled="!agreed || loginLoading" @click="handleLogin">
          <text class="login-btn-text">{{ loginLoading ? '登录中...' : '完成并进入' }}</text>
        </button>

        <!-- 协议勾选 -->
        <view class="agreement-check" @click="agreed = !agreed">
          <view class="check-box" :class="{ 'check-box-active': agreed }">
            <text v-if="agreed" class="check-mark">✓</text>
          </view>
          <text class="agreement-check-text">我已阅读并同意</text>
          <text class="agreement-check-text text-amber" @click.stop="openAgreement('user')">《用户协议》</text>
          <text class="agreement-check-text">和</text>
          <text class="agreement-check-text text-amber" @click.stop="openAgreement('privacy')">《隐私政策》</text>
        </view>
      </view>
    </view>

    <!-- 底部协议（非登录状态时显示） -->
    <view v-if="showNotice" class="agreement">
      <text class="text-tiny">登录即代表同意</text>
      <text class="text-tiny text-amber">《用户协议》</text>
      <text class="text-tiny">和</text>
      <text class="text-tiny text-amber">《隐私政策》</text>
    </view>
  </view>
</template>

<script>
import themeMixin from '../../common/theme-mixin'
import client, { saveAuthTokens } from '../../common/api'

export default {
  mixins: [themeMixin],
  data() {
    return {
      showNotice: true,
      loginLoading: false,
      agreed: false,
      avatarUrl: '',
      nickname: ''
    }
  },
  onShareAppMessage() {
    return {
      title: '干杯日记 - 让每一杯酒都有迹可循',
      path: '/pages/index/index'
    }
  },
  onShareTimeline() {
    return {
      title: '干杯日记 - 让每一杯酒都有迹可循',
      query: ''
    }
  },
  methods: {
    acceptNotice() {
      this.showNotice = false
    },

    // ===== 微信新规范：头像选择 =====
    onChooseAvatar(e) {
      if (e.detail && e.detail.avatarUrl) {
        this.avatarUrl = e.detail.avatarUrl
      }
    },

    // ===== 微信新规范：昵称输入 =====
    onNicknameBlur(e) {
      // 用户输入内容会自动更新到 v-model，这里可以做额外处理
      if (e.detail && e.detail.value) {
        this.nickname = e.detail.value
      }
    },

    // ===== 确认登录 =====
    async handleLogin() {
      if (this.loginLoading) return
      if (!this.agreed) {
        uni.showToast({ title: '请先同意用户协议和隐私政策', icon: 'none', duration: 2000 })
        return
      }
      if (!this.nickname.trim()) {
        uni.showToast({ title: '请先填写昵称', icon: 'none', duration: 2000 })
        return
      }
      this.loginLoading = true
      try {
        // 1. 获取微信登录 code
        const loginRes = await this.wxLogin()
        if (!loginRes || !loginRes.code) {
          throw new Error('获取微信code失败')
        }
        // 2. 调用后端微信登录接口
        const loginParams = {
          code: loginRes.code,
          nickName: this.nickname.trim() || '',
          avatarUrl: this.avatarUrl || ''
        }
        const resp = await client.WechatLogin(loginParams)

        // 3. 保存 token 和用户信息
        saveAuthTokens(resp)
        if (resp.user) {
          uni.setStorageSync('user_info', JSON.stringify(resp.user))
        }
        uni.setStorageSync('is_logged_in', 'true')
        uni.setStorageSync('is_guest', 'false')
        uni.setStorageSync('is_first_launch', 'false')

        this.finishLogin()
      } catch (e) {
        console.warn('后端登录失败，降级为本地模式:', e)
        uni.showToast({ title: e.msg || '登录失败，使用本地模式', icon: 'none', duration: 2000 })
        // 降级为本地登录
        const userInfo = {
          id: `user_${Date.now()}`,
          nickname: this.nickname.trim() || '酒友',
          avatar: this.avatarUrl || '',
          joinedAt: new Date().toISOString().slice(0, 10),
          preferences: null
        }
        uni.setStorageSync('user_info', JSON.stringify(userInfo))
        uni.setStorageSync('is_logged_in', 'true')
        uni.setStorageSync('is_first_launch', 'false')
        this.finishLogin()
      } finally {
        this.loginLoading = false
      }
    },

    // 微信login获取code
    wxLogin() {
      return new Promise((resolve, reject) => {
        uni.login({
          provider: 'weixin',
          success: res => resolve(res),
          fail: err => reject(err)
        })
      })
    },

    finishLogin() {
      uni.setStorageSync('is_logged_in', 'true')
      uni.setStorageSync('is_first_launch', 'false')
      uni.switchTab({ url: '/pages/index/index' })
    },

    // ===== 协议查看 =====
    openAgreement(type) {
      const title = type === 'user' ? '用户协议' : '隐私政策'
      uni.showToast({ title: `${title}页面开发中`, icon: 'none' })
    }
  }
}
</script>

<style lang="scss" scoped>
.login-page {
  display: flex;
  flex-direction: column;
 height: 100vh;
  padding: $sp-lg;
}

.brand-area {
  flex: 0.6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 60rpx;
}

.brand-glow {
  position: absolute;
  width: 300rpx;
  height: 300rpx;
  background: radial-gradient(circle, rgba(232,168,56,0.15) 0%, transparent 70%);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -60%);
  filter: blur(30rpx);
}

.brand-icon {
  width: 140rpx;
  height: 140rpx;
  background: $bg-card;
  border-radius: $radius-lg;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: $shadow-md;
  margin-bottom: $sp-md;
  position: relative;
  z-index: 2;
}

.brand-emoji {
  font-size: 64rpx;
}

.brand-name {
  font-size: $fs-3xl;
  font-weight: $fw-black;
  color: $text-primary;
  letter-spacing: -2rpx;
  margin-bottom: $sp-xs;
}

.brand-slogan {
  font-size: $fs-sm;
  color: $text-secondary;
}

.login-area {
  padding-bottom: $sp-lg;
}

/* 理性饮酒须知 */
.notice-card {
  padding: $sp-lg;
}

.notice-header {
  display: flex;
  align-items: center;
  gap: $sp-sm;
  margin-bottom: $sp-md;
}

.notice-icon {
  font-size: $fs-lg;
}

.notice-title {
  font-size: $fs-base;
  font-weight: $fw-bold;
}

.notice-content {
  margin-bottom: $sp-md;
}

.notice-item {
  display: block;
  font-size: $fs-xs;
  color: $text-secondary;
  line-height: $lh-normal;
}

.notice-btn {
  width: 100%;
}

/* 资料表单 */
.profile-form {
  padding: $sp-lg;
  margin-bottom: 0;
}

.form-title-row {
  margin-bottom: $sp-md;
}

.form-title {
  font-size: $fs-base;
  font-weight: $fw-bold;
  color: $text-primary;
}

.avatar-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: $sp-sm 0;
  border-bottom: 2rpx solid var(--border-micro, rgba(255, 255, 255, 0.05));
}

.avatar-btn {
  display: flex;
  align-items: center;
  gap: $sp-sm;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  line-height: normal;
  &::after { display: none; }
}

.avatar-preview {
  width: 80rpx;
  height: 80rpx;
  border-radius: $radius-full;
  border: 3rpx solid $amber;
  flex-shrink: 0;
}

.avatar-placeholder {
  width: 80rpx;
  height: 80rpx;
  border-radius: $radius-full;
  border: 3rpx dashed rgba(232,168,56,0.4);
  background: $bg-elevated;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.avatar-placeholder-icon {
  font-size: 40rpx;
  opacity: 0.5;
}

.avatar-edit {
  font-size: $fs-sm;
  color: $amber;
}

.nickname-row {
  display: flex;
  align-items: center;
  gap: $sp-lg;
  padding: $sp-sm 0;
}

.form-label {
  font-size: $fs-base;
  color: $text-secondary;
  flex-shrink: 0;
  min-width: 80rpx;
}

.nickname-input {
  flex: 1;
  font-size: $fs-base;
  color: $text-primary;
  padding: $sp-xs 0;
}

/* 登录按钮 */
.login-actions {
  display: flex;
  flex-direction: column;
  gap: $sp-md;
}

.login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: $sp-sm;

  &[disabled] {
    opacity: 0.5;
  }
}

.login-btn-text {
  font-size: $fs-lg;
  font-weight: $fw-bold;
}

/* 协议勾选 */
.agreement-check {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: $sp-xs;
  padding-top: $sp-xs;
}

.check-box {
  width: 36rpx;
  height: 36rpx;
  border-radius: $radius-sm;
  border: 2rpx solid $text-tertiary;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all $duration-fast $ease-out;
  flex-shrink: 0;
}

.check-box-active {
  background: $amber;
  border-color: $amber;
}

.check-mark {
  font-size: $fs-xs;
  color: $text-on-amber;
  font-weight: $fw-bold;
}

.agreement-check-text {
  font-size: $fs-xs;
  color: $text-tertiary;
}

/* 底部协议 */
.agreement {
  display: flex;
  justify-content: center;
  gap: $sp-xs;
  padding: $sp-sm 0;
}

</style>
