<template>
  <div class="login-container">
    <!-- 左侧励志区域 -->
    <div class="login-left">
      <div class="left-content">
        <div class="quote-text">
          <span class="quote-mark">“</span>
          <div class="quote-content">
            <p>不负时代韶华，</p>
            <p>争做时代新人。</p>
          </div>
        </div>
      </div>
    </div>

    <!-- 右侧登录表单区域 -->
    <div class="login-right">
      <div class="login-form-container">
        <!-- Logo和标题区域 -->
        <div class="login-header">
          <div class="logo-section">
            <div class="logo">
              <img src="@/assets/imgs/logo-icon.svg" alt="Logo" />
            </div>
            <h1 class="platform-title">红色思政学习平台</h1>
          </div>
        </div>
        
        <!-- 登录方式切换 -->
        <div class="login-mode-tabs">
          <div 
            :class="['tab-item', { active: loginMode === 'password' }]" 
            @click="switchLoginMode('password')"
          >
            密码登录
          </div>
          <div 
            :class="['tab-item', { active: loginMode === 'captcha' }]" 
            @click="switchLoginMode('captcha')"
          >
            验证码登录
          </div>
        </div>
        
        <!-- 登录表单 -->
        <el-form
          ref="loginFormRef"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
          @submit.prevent="handleLogin"
        >
          <!-- 密码登录模式 -->
          <template v-if="loginMode === 'password'">
            <el-form-item prop="username">
              <el-input
                v-model="loginForm.username"
                placeholder="请输入学号、手机号、邮箱"
                class="form-input"
              />
            </el-form-item>
            
            <el-form-item prop="password">
              <el-input
                v-model="loginForm.password"
                type="password"
                placeholder="请输入密码"
                show-password
                class="form-input"
              />
            </el-form-item>
          </template>
          
          <!-- 验证码登录模式 -->
          <template v-else>
            <!-- 登录方式选择 -->
            <div class="captcha-type-tabs">
              <div 
                :class="['captcha-tab-item', { active: captchaType === 'phone' }]" 
                @click="switchCaptchaType('phone')"
              >
                手机号
              </div>
              <div 
                :class="['captcha-tab-item', { active: captchaType === 'email' }]" 
                @click="switchCaptchaType('email')"
              >
                邮箱
              </div>
            </div>
            
            <!-- 手机号验证码登录 -->
            <template v-if="captchaType === 'phone'">
              <el-form-item prop="phone">
                <el-input
                  v-model="loginForm.phone"
                  placeholder="请输入手机号"
                  class="form-input"
                  maxlength="11"
                />
              </el-form-item>
              
              <el-form-item prop="captcha">
                <div class="captcha-input-container">
                  <el-input
                    v-model="loginForm.captcha"
                    placeholder="请输入验证码"
                    class="form-input captcha-input"
                    maxlength="6"
                  />
                  <el-button
                    class="send-captcha-btn"
                    :disabled="smsCountdown > 0"
                    @click="handleSendSmsCode"
                  >
                    {{ smsCountdown > 0 ? `${smsCountdown}秒后重试` : '获取验证码' }}
                  </el-button>
                </div>
              </el-form-item>
            </template>
            
            <!-- 邮箱验证码登录 -->
            <template v-else>
              <el-form-item prop="email">
                <el-input
                  v-model="loginForm.email"
                  placeholder="请输入邮箱"
                  class="form-input"
                />
              </el-form-item>
              
              <el-form-item prop="captcha">
                <div class="captcha-input-container">
                  <el-input
                    v-model="loginForm.captcha"
                    placeholder="请输入验证码"
                    class="form-input captcha-input"
                    maxlength="6"
                  />
                  <el-button
                    class="send-captcha-btn"
                    :disabled="emailCountdown > 0"
                    @click="handleSendEmailCode"
                  >
                    {{ emailCountdown > 0 ? `${emailCountdown}秒后重试` : '获取验证码' }}
                  </el-button>
                </div>
              </el-form-item>
            </template>
          </template>
          
          <el-form-item>
            <div class="login-options">
              <div class="remember-me">
                <el-checkbox v-model="loginForm.rememberMe">
                  自动登录
                </el-checkbox>
              </div>
              <el-link type="primary" @click="goToForgotPassword" class="forgot-password">
                忘记密码？
              </el-link>
            </div>
          </el-form-item>
          
          <el-form-item>
            <el-button
              type="primary"
              :loading="loginLoading"
              @click="handleLogin"
              @keydown.enter="handleLogin"
              class="login-button"
            >
              登录
            </el-button>
          </el-form-item>
          
          <el-form-item prop="agree">
            <p class="agreement-text">
              <el-checkbox v-model="loginForm.agree">登录即为同意<span class="agreement-link" style="color: red">《红色思政智能体平台》</span></el-checkbox>
            </p>
          </el-form-item>
        </el-form>
        
      </div>
      <!-- 底部信息 -->
      <div class="login-footer">
        <p class="register-link">
          没有账号？<span class="register-link-text" @click="goToRegister">现在就注册</span>
        </p>
        <p class="copyright">
          Copyright ©红色思政智能体平台
        </p>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive, onMounted, computed } from 'vue';
import { useRouter, useRoute } from 'vue-router';
import { useStore } from 'vuex';
import { ElMessage, type FormInstance, type FormRules } from 'element-plus';
import type { LoginParam } from '@/types';
import { LoginType } from '@/types/enums';
import { authApi } from '@/apis/system/auth';

// 响应式引用
const loginFormRef = ref<FormInstance>();
const loginLoading = ref(false);
const showCaptcha = ref(false);
const captchaImage = ref('');

// 登录模式：password-密码登录，captcha-验证码登录
const loginMode = ref<'password' | 'captcha'>('password');
// 验证码类型：phone-手机号，email-邮箱
const captchaType = ref<'phone' | 'email'>('phone');

// 倒计时
const smsCountdown = ref(0);
const emailCountdown = ref(0);

// Composition API
const router = useRouter();
const route = useRoute();
const store = useStore();

// 表单数据
const loginForm = reactive<LoginParam>({
  loginType: undefined,
  username: '',
  phone: '',
  email: '',
  password: '',
  captcha: '',
  captchaId: '',
  rememberMe: false,
  agree: true
});

// 计算属性：登录模式标题
const loginModeTitle = computed(() => {
  return loginMode.value === 'password' ? '密码登录' : '验证码登录';
});

// 表单验证规则
const loginRules: FormRules = {
  username: [
    { 
      required: loginMode.value === 'password', 
      message: '请输入用户名、手机号或邮箱', 
      trigger: 'blur' 
    }
  ],
  phone: [
    { 
      required: loginMode.value === 'captcha' && captchaType.value === 'phone', 
      message: '请输入手机号', 
      trigger: 'blur' 
    },
    { 
      pattern: /^1[3-9]\d{9}$/, 
      message: '请输入正确的手机号', 
      trigger: 'blur' 
    }
  ],
  email: [
    { 
      required: loginMode.value === 'captcha' && captchaType.value === 'email', 
      message: '请输入邮箱', 
      trigger: 'blur' 
    },
    { 
      type: 'email', 
      message: '请输入正确的邮箱格式', 
      trigger: 'blur' 
    }
  ],
  password: [
    { 
      required: loginMode.value === 'password', 
      message: '请输入密码', 
      trigger: 'blur' 
    },
    { 
      min: 6, 
      message: '密码至少6个字符', 
      trigger: 'blur' 
    }
  ],
  captcha: [
    { 
      required: loginMode.value === 'captcha', 
      message: '请输入验证码', 
      trigger: 'blur' 
    },
    { 
      len: 6, 
      message: '验证码为6位', 
      trigger: 'blur' 
    }
  ],
  agree: [
    { 
      validator: (rule: any, value: boolean, callback: any) => {
        if (!value) {
          callback(new Error('请同意《红色思政智能体平台》用户协议'));
        } else {
          callback();
        }
      }, 
      trigger: 'change' 
    }
  ]
};

// 切换登录模式
const switchLoginMode = (mode: 'password' | 'captcha') => {
  if (loginMode.value === mode) return;
  
  loginMode.value = mode;
  
  // 清空表单数据和验证
  loginFormRef.value?.clearValidate();
  loginForm.username = '';
  loginForm.phone = '';
  loginForm.email = '';
  loginForm.password = '';
  loginForm.captcha = '';
  loginForm.captchaId = '';
};

// 切换验证码类型
const switchCaptchaType = (type: 'phone' | 'email') => {
  if (captchaType.value === type) return;
  
  captchaType.value = type;
  
  // 清空相关表单数据和验证
  loginFormRef.value?.clearValidate();
  loginForm.phone = '';
  loginForm.email = '';
  loginForm.captcha = '';
  loginForm.captchaId = '';
};

// 发送短信验证码
const handleSendSmsCode = async () => {
  // 验证手机号
  if (!loginForm.phone || loginForm.phone.trim() === '') {
    ElMessage.warning('请输入手机号');
    return;
  }
  
  const phonePattern = /^1[3-9]\d{9}$/;
  if (!phonePattern.test(loginForm.phone)) {
    ElMessage.warning('请输入正确的手机号');
    return;
  }
  
  try {
    const result = await authApi.sendSmsCode(loginForm.phone);
    if (result.code === 200 && result.data) {
      // 保存sessionId
      loginForm.captchaId = result.data.sessionId;
      ElMessage.success(result.data.message || '验证码已发送');
      
      // 开始倒计时
      smsCountdown.value = 60;
      const timer = setInterval(() => {
        smsCountdown.value--;
        if (smsCountdown.value <= 0) {
          clearInterval(timer);
        }
      }, 1000);
    } else {
      ElMessage.error(result.message || '发送验证码失败');
    }
  } catch (error: any) {
    console.error('发送验证码失败:', error);
    ElMessage.error(error.message || '发送验证码失败');
  }
};

// 发送邮箱验证码
const handleSendEmailCode = async () => {
  // 验证邮箱
  if (!loginForm.email || loginForm.email.trim() === '') {
    ElMessage.warning('请输入邮箱');
    return;
  }
  
  const emailPattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
  if (!emailPattern.test(loginForm.email)) {
    ElMessage.warning('请输入正确的邮箱格式');
    return;
  }
  
  try {
    const result = await authApi.sendEmailCode(loginForm.email);
    if (result.code === 200 && result.data) {
      // 保存sessionId
      loginForm.captchaId = result.data.sessionId;
      ElMessage.success(result.data.message || '验证码已发送到邮箱');
      
      // 开始倒计时
      emailCountdown.value = 60;
      const timer = setInterval(() => {
        emailCountdown.value--;
        if (emailCountdown.value <= 0) {
          clearInterval(timer);
        }
      }, 1000);
    } else {
      ElMessage.error(result.message || '发送验证码失败');
    }
  } catch (error: any) {
    console.error('发送验证码失败:', error);
    ElMessage.error(error.message || '发送验证码失败');
  }
};

// 方法
const handleLogin = async () => {
  if (!loginFormRef.value) return;
  
  // 检查是否同意用户协议
  if (!loginForm.agree) {
    ElMessage.warning('请先同意《红色思政智能体平台》用户协议');
    return;
  }
  
  try {
    const valid = await loginFormRef.value.validate();
    if (!valid) return;
    
    loginLoading.value = true;
    
    // 根据登录模式设置loginType
    if (loginMode.value === 'password') {
      loginForm.loginType = LoginType.PASSWORD;
    } else {
      loginForm.loginType = captchaType.value === 'phone' ? LoginType.PHONE : LoginType.EMAIL;
    }
    
    // 调用store中的登录action
    const result = await store.dispatch('auth/login', loginForm);
    
    ElMessage.success('登录成功！');
    
    // 优先使用 query 中的 redirect，其次使用返回的 redirectUrl，最后使用默认首页
    const redirectPath = (route.query.redirect as string) || result.redirectUrl || '/home';
    router.push(redirectPath);
    
  } catch (error: any) {
    console.error('登录失败:', error);
    ElMessage.error(error.message || '登录失败，请检查用户名和密码');
    
    // 登录失败后显示验证码
    showCaptcha.value = true;
    // refreshCaptcha();
  } finally {
    loginLoading.value = false;
  }
};

const refreshCaptcha = async () => {
  try {
    const result = await authApi.getCaptcha();
    if (result.data) {
      captchaImage.value = result.data.captchaImage;
      loginForm.captchaId = result.data.captchaId;
    }
  } catch (error) {
    console.error('获取验证码失败:', error);
    ElMessage.error('获取验证码失败');
  }
};

function goToRegister() {
  router.push('/register');
}

function goToForgotPassword() {
  router.push('/forgot-password');
}

// 组件挂载时检查是否需要显示验证码
onMounted(() => {
  // 可以根据需要决定是否默认显示验证码
  // refreshCaptcha();
});
</script>

<style lang="scss" scoped>
.login-container {

  display: flex;
  width: 100%;
  height: 80%;
  max-width: 1142px;
  margin: auto auto;
  box-shadow: 0px 4px 30px 0px rgba(176, 196, 225, 0.25);
  border-radius: 30px;
  overflow: hidden;
  justify-content: center;
  align-items: center;
}

.login-left {
  height: 100%;
  flex: 1;
  display: flex;
  /* min-height: 671px; */
  padding: 113px 120px;
  border-radius: 30px 0 0 30px;
  overflow: hidden;
  background: url(@/assets/imgs/login-bg.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  
  .left-content {
    width: 100%;
    max-width: 350px;
  }
  
  .quote-text {
    color: #FFF2D3;
    
    .quote-mark {
      font-family: 'Arial Black', sans-serif;
      font-weight: 900;
      font-size: 71.096px;
      line-height: 0.74;
      display: block;
      margin-left: 1.48px;
    }
    
    .quote-content {
      margin-top: 46.66px;
      
      p {
        font-family: 'Source Han Sans SC', sans-serif;
        font-weight: 700;
        font-size: 50px;
        line-height: 1.42;
        margin: 0;
      }
    }
  }
}

.login-right {
  flex: 1;
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  border-radius: 0 30px 30px 0;
  padding: 40px 0;
}

.login-form-container {
  width: 287px;
  padding: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.login-header {
  margin-bottom: 24px;
  
  .logo-section {
    display: flex;
    align-items: center;
    gap: 11px;
    margin-bottom: 16px;
    
    .logo {
      width: 36px;
      height: 36px;
      background: #C62828;
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 3px;
      
      img {
        width: 30px;
        height: 30px;
      }
    }
    
    .platform-title {
      font-family: 'Taipei Sans TC Beta', sans-serif;
      font-weight: 700;
      font-size: 26px;
      line-height: 1.31;
      color: #141F38;
      margin: 0;
    }
  }
  
  .login-title {
    font-family: "Source Han Sans SC";
    font-weight: 600;
    font-size: 16px;
    line-height: 1.5;
    color: #141F38;
    margin: 0;
  }
}

.login-mode-tabs {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid #E8E8E8;
  
  .tab-item {
    padding: 8px 16px;
    font-size: 14px;
    color: rgba(0, 0, 0, 0.45);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
    
    &:hover {
      color: #C62828;
    }
    
    &.active {
      color: #C62828;
      border-bottom-color: #C62828;
      font-weight: 600;
    }
  }
}

.captcha-type-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  
  .captcha-tab-item {
    flex: 1;
    padding: 8px;
    text-align: center;
    font-size: 14px;
    color: rgba(0, 0, 0, 0.65);
    background: #F2F3F5;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    
    &:hover {
      background: #E8E8E8;
    }
    
    &.active {
      color: #FFFFFF;
      background: #C62828;
      font-weight: 500;
    }
  }
}

.login-form {
  .form-input {
    width: 100%;
    height: 48px;
    background: #F2F3F5;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    color: rgba(0, 0, 0, 0.3);
    
    &::placeholder {
      color: rgba(0, 0, 0, 0.3);
    }
    
    &:focus {
      outline: none;
      background: #FFFFFF;
      border: 1px solid #C62828;
    }
  }
  
  .captcha-input-container {
    display: flex;
    gap: 8px;
    width: 100%;
    
    .captcha-input {
      flex: 1;
    }
    
    .send-captcha-btn {
      height: 48px;
      padding: 0 16px;
      background: #C62828;
      border: none;
      border-radius: 12px;
      color: #FFFFFF;
      font-size: 13px;
      white-space: nowrap;
      
      &:hover:not(:disabled) {
        background: #B71C1C;
      }
      
      &:disabled {
        background: #D9D9D9;
        color: rgba(0, 0, 0, 0.25);
        cursor: not-allowed;
      }
    }
  }
  
  .login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 16px;
    
    .remember-me {
      display: flex;
      align-items: center;
      gap: 4px;
      
      .el-checkbox {
        font-size: 12px;
        color: rgba(0, 0, 0, 0.3);
        
        .el-checkbox__label {
          font-size: 12px;
          line-height: 1.67;
        }
      }
    }
    
    .forgot-password {
      font-size: 12px;
      color: rgba(0, 0, 0, 0.3);
      text-decoration: none;
      
      &:hover {
        color: #C62828;
      }
    }
  }
  
  .login-button {
    width: 100%;
    height: 46px;
    background: #C62828;
    border: none;
    border-radius: 12px;
    color: #FFFFFF;
    font-family: "Source Han Sans SC";
    font-weight: 500;
    font-size: 16px;
    line-height: 1.4;
    margin-bottom: 8px;
    
    &:hover {
      background: #B71C1C;
    }
  }
  
  .agreement-text {
    font-family: "Source Han Sans SC";
    font-weight: 400;
    font-size: 10px;
    line-height: 1.8;
    color: rgba(0, 0, 0, 0.3);
    text-align: center;
    margin: 0;
  }
}

.login-footer {
  width: 100%;
  
  .register-link {
    font-family: "Source Han Sans SC";
    font-weight: 600;
    font-size: 12px;
    line-height: 1.83;
    color: #141F38;
    text-align: center;
    margin: 0 0 16px 0;
 
    .register-link-text {
      cursor: pointer;
      color: #ff0000;
      &:hover {
        color: #C62828;
      }
    }
  }
  
  .copyright {
    font-family: "Source Han Sans SC";
    font-size: 12px;
    line-height: 2;
    color: #D9D9D9;
    text-align: center;
    padding-bottom: 0;
  }
}

// 响应式设计
@media (max-width: 768px) {
  .login-container {
    flex-direction: column;
    border-radius: 0;
    min-height: 100vh;
  }
  
  .login-left {
    min-height: 300px;
    padding: 40px;
    
    .left-content {
      max-width: 100%;
    }
    
    .quote-text {
      .quote-mark {
        font-size: 50px;
      }
      
      .quote-content p {
        font-size: 36px;
      }
    }
  }
  
  .login-right {
    min-height: auto;
    padding: 20px;
  }
  
  .login-form-container {
    width: 100%;
    max-width: 400px;
  }
}
</style>
