<template>
  <div class="login-form-wrapper">
    <!-- 登录方式切换标签 -->
    <div class="login-tabs">
      <div class="tab-item" :class="{ active: loginType === 'password' }" @click="loginType = 'password'">密码登录</div>
      <div class="tab-item" :class="{ active: loginType === 'code' }" @click="loginType = 'code'">验证码登录</div>
    </div>

    <!-- 密码登录表单 -->
    <el-form
      v-if="loginType === 'password'"
      ref="passwordFormRef"
      :model="passwordForm"
      :rules="passwordRules"
      size="large"
      class="login-form-content"
    >
      <el-form-item prop="phone">
        <el-input v-model="passwordForm.phone" placeholder="请输入手机号" maxlength="11" clearable />
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="passwordForm.password"
          type="password"
          placeholder="请输入密码"
          show-password
          autocomplete="new-password"
          clearable
        />
      </el-form-item>
      <el-form-item prop="captcha">
        <div class="captcha-wrapper">
          <el-input
            v-model="passwordForm.captcha"
            placeholder="请输入图片中的数字"
            maxlength="4"
            clearable
            class="captcha-input"
          />
          <div class="captcha-image" @click="refreshCaptcha">
            <img v-if="captchaImage" :src="captchaImage" alt="验证码" />
            <div v-else class="captcha-placeholder">点击获取</div>
          </div>
        </div>
      </el-form-item>
    </el-form>

    <!-- 验证码登录表单 -->
    <el-form v-else ref="codeFormRef" :model="codeForm" :rules="codeRules" size="large" class="login-form-content">
      <el-form-item prop="phone">
        <el-input v-model="codeForm.phone" placeholder="请输入手机号" maxlength="11" clearable />
      </el-form-item>
      <el-form-item prop="code">
        <div class="code-wrapper">
          <el-input v-model="codeForm.code" placeholder="请输入验证码" maxlength="6" clearable class="code-input" />
          <el-button :disabled="codeCountdown > 0" @click="sendCode" class="code-button">
            {{ codeCountdown > 0 ? `${codeCountdown}秒后重试` : "获取验证码" }}
          </el-button>
        </div>
      </el-form-item>
    </el-form>

    <!-- 登录按钮 -->
    <el-button type="primary" size="large" :loading="loading" @click="handleLogin" class="login-button"> 登录 </el-button>

    <!-- 底部链接 -->
    <div class="form-footer">
      <span class="link-text" @click="handleForgotPassword">忘记密码?</span>
      <span class="link-text" @click="handleRegister">还没有账号,去注册</span>
    </div>

    <!-- 用户协议 -->
    <div class="agreement-wrapper">
      <el-checkbox v-model="agreed" />
      <span class="agreement-text">
        我已阅读并同意
        <span class="link-text" @click="handleUserAgreement">《用户协议》</span>
        和
        <span class="link-text" @click="handlePrivacyPolicy">《隐私政策》</span>
      </span>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive, watch, onMounted, onBeforeUnmount } from "vue";
import { useRouter } from "vue-router";
import { HOME_URL } from "@/config";
import { Login } from "@/api/interface/index";
import { ElMessage, ElNotification } from "element-plus";
import { loginApi } from "@/api/modules/login";
import { useUserStore } from "@/stores/modules/user";
import { useTabsStore } from "@/stores/modules/tabs";
import { useKeepAliveStore } from "@/stores/modules/keepAlive";
import { initDynamicRouter } from "@/routers/modules/dynamicRouter";
import type { ElForm } from "element-plus";
import md5 from "md5";
import { aiLogin } from "@/api/indexAi";
import { localSet } from "@/utils";

const router = useRouter();
const userStore = useUserStore();
const tabsStore = useTabsStore();
const keepAliveStore = useKeepAliveStore();

// 登录方式
const loginType = ref<"password" | "code">("password");

// 表单引用
const passwordFormRef = ref<InstanceType<typeof ElForm>>();
const codeFormRef = ref<InstanceType<typeof ElForm>>();

// 加载状态
const loading = ref(false);

// 用户协议同意状态
const agreed = ref(false);

// 密码登录表单
const passwordForm = reactive({
  phone: "",
  password: "",
  captcha: ""
});

// 验证码登录表单
const codeForm = reactive({
  phone: "",
  code: ""
});

// 图片验证码
const captchaImage = ref("");

// 验证码倒计时
const codeCountdown = ref(0);
let countdownTimer: NodeJS.Timeout | null = null;

// 表单验证规则
const passwordRules = reactive({
  phone: [
    { required: true, 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码", trigger: "blur" }
  ],
  password: [{ required: true, message: "请输入密码", trigger: "blur" }],
  captcha: [{ required: true, message: "请输入验证码", trigger: "blur" }]
});

const codeRules = reactive({
  phone: [
    { required: true, 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码", trigger: "blur" }
  ],
  code: [{ required: true, message: "请输入验证码", trigger: "blur" }]
});

// 获取图片验证码
const refreshCaptcha = async () => {
  try {
    // TODO: 调用获取验证码图片的API
    // const { data } = await getCaptchaApi();
    // captchaImage.value = data.imageUrl;

    // 临时使用随机数字作为验证码图片（实际应该从API获取）
    const randomNum = Math.floor(1000 + Math.random() * 9000);
    captchaImage.value = `data:image/svg+xml;base64,${btoa(`
      <svg width="120" height="40" xmlns="http://www.w3.org/2000/svg">
        <rect width="120" height="40" fill="#f5f7fa"/>
        <text x="60" y="25" font-size="20" font-weight="bold" text-anchor="middle" fill="#409eff">${randomNum}</text>
      </svg>
    `)}`;
  } catch (error) {
    ElMessage.error("获取验证码失败");
  }
};

// 发送短信验证码
const sendCode = async () => {
  if (!codeForm.phone) {
    ElMessage.warning("请先输入手机号");
    return;
  }

  if (!/^1[3-9]\d{9}$/.test(codeForm.phone)) {
    ElMessage.warning("请输入正确的手机号码");
    return;
  }

  try {
    // TODO: 调用发送验证码的API
    // await sendSmsCodeApi({ phone: codeForm.phone });

    ElMessage.success("验证码已发送");

    // 开始倒计时
    codeCountdown.value = 60;
    countdownTimer = setInterval(() => {
      codeCountdown.value--;
      if (codeCountdown.value <= 0) {
        if (countdownTimer) {
          clearInterval(countdownTimer);
          countdownTimer = null;
        }
      }
    }, 1000);
  } catch (error) {
    ElMessage.error("发送验证码失败");
  }
};

// 登录处理
const handleLogin = async () => {
  if (!agreed.value) {
    ElMessage.warning("请先同意用户协议和隐私政策");
    return;
  }

  let formRef: InstanceType<typeof ElForm> | undefined;
  let formData: any = {};

  if (loginType.value === "password") {
    formRef = passwordFormRef.value;
    formData = {
      username: passwordForm.phone,
      password: passwordForm.password,
      captcha: passwordForm.captcha
    };
  } else {
    formRef = codeFormRef.value;
    formData = {
      username: codeForm.phone,
      code: codeForm.code,
      loginType: "code"
    };
  }

  if (!formRef) return;

  await formRef.validate(async valid => {
    if (!valid) return;

    loading.value = true;
    try {
      // 根据登录方式调用不同的登录接口
      let loginParams: any;
      if (loginType.value === "password") {
        loginParams = {
          username: formData.username,
          password: md5(formData.password)
        };
      } else {
        // TODO: 验证码登录接口
        loginParams = {
          username: formData.username,
          code: formData.code
        };
      }

      const { data } = (await loginApi(loginParams)) as { data: Login.ResLogin };

      if (data) {
        userStore.setToken(data.token);
        console.log("AI登录");

        // 保存用户信息到localStorage，供AI登录使用
        const userInfo = {
          userInfo: {
            nickName: formData.username, // 使用登录时的用户名
            phone: formData.username, // 假设用户名就是手机号
            password: loginType.value === "password" ? formData.password : undefined // 保存密码用于AI登录
          },
          token: data.token
        };
        localSet("geeker-user", userInfo);

        // 旧登录接口成功后，调用AI登录接口
        try {
          console.log("AI登录");
          await aiLogin();
        } catch (error) {
          console.error("AI服务登录失败:", error);
          // AI登录失败不影响主系统登录流程，静默处理
        }

        // 添加动态路由
        await initDynamicRouter();

        // 清空 tabs、keepAlive 数据
        tabsStore.setTabs([]);
        keepAliveStore.setKeepAliveName([]);

        // 跳转到首页
        router.push(HOME_URL);

        ElNotification({
          title: "登录成功",
          type: "success",
          duration: 3000
        });
      } else {
        ElNotification({
          title: "登录失败，请检查账号和密码",
          type: "error",
          duration: 3000
        });
      }
    } catch (error: any) {
      ElNotification({
        title: error?.msg || "登录失败，请稍后重试",
        type: "error",
        duration: 3000
      });
    } finally {
      loading.value = false;
    }
  });
};

// 忘记密码
const handleForgotPassword = () => {
  // TODO: 跳转到忘记密码页面
  ElMessage.info("忘记密码功能开发中");
};

// 注册
const handleRegister = () => {
  // TODO: 跳转到注册页面
  ElMessage.info("注册功能开发中");
};

// 用户协议
const handleUserAgreement = () => {
  // TODO: 打开用户协议弹窗或跳转
  ElMessage.info("用户协议");
};

// 隐私政策
const handlePrivacyPolicy = () => {
  // TODO: 打开隐私政策弹窗或跳转
  ElMessage.info("隐私政策");
};

// 切换登录方式时重置表单
const resetForms = () => {
  if (passwordFormRef.value) {
    passwordFormRef.value.resetFields();
  }
  if (codeFormRef.value) {
    codeFormRef.value.resetFields();
  }
  captchaImage.value = "";
  codeCountdown.value = 0;
  if (countdownTimer) {
    clearInterval(countdownTimer);
    countdownTimer = null;
  }
};

// 监听登录方式切换
watch(
  () => loginType.value,
  () => {
    resetForms();
  }
);

onMounted(() => {
  // 密码登录时自动获取验证码
  if (loginType.value === "password") {
    refreshCaptcha();
  }

  // 监听 enter 事件
  document.onkeydown = (e: KeyboardEvent) => {
    if (e.code === "Enter" || e.code === "enter" || e.code === "NumpadEnter") {
      if (loading.value) return;
      handleLogin();
    }
  };
});

onBeforeUnmount(() => {
  document.onkeydown = null;
  if (countdownTimer) {
    clearInterval(countdownTimer);
  }
});
</script>

<style scoped lang="scss">
.login-form-wrapper {
  .login-tabs {
    display: flex;
    width: fit-content;
    margin: 0 auto 30px;
    border-bottom: 1px solid #e4e7ed;
    .tab-item {
      position: relative;
      padding: 12px 24px;
      font-size: 16px;
      color: #606266;
      text-align: center;
      white-space: nowrap;
      cursor: pointer;
      transition: color 0.3s;
      &:hover {
        color: #606266;
      }
      &.active {
        font-weight: 700;
        color: #000000;
        &::after {
          position: absolute;
          right: 0;
          bottom: -1px;
          left: 0;
          height: 2px;
          content: "";
          background-color: #6c8ff8;
        }
      }
    }
  }
  .login-form-content {
    :deep(.el-form-item) {
      margin-bottom: 20px;
    }
    :deep(.el-input__wrapper) {
      padding: 12px 15px;
    }
  }
  .captcha-wrapper {
    display: flex;
    gap: 10px;
    .captcha-input {
      flex: 1;
    }
    .captcha-image {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 120px;
      height: 40px;
      overflow: hidden;
      cursor: pointer;
      background-color: #f5f7fa;
      border: 1px solid #dcdfe6;
      border-radius: 4px;
      img {
        width: 100%;
        height: 100%;
        object-fit: cover;
      }
      .captcha-placeholder {
        font-size: 12px;
        color: #909399;
      }
      &:hover {
        border-color: #409eff;
      }
    }
  }
  .code-wrapper {
    display: flex;
    gap: 10px;
    .code-input {
      flex: 1;
    }
    .code-button {
      width: 120px;
      white-space: nowrap;
    }
  }
  .login-button {
    width: 100%;
    height: 44px;
    margin-top: 10px;
    font-size: 16px;
  }
  :deep(.login-button.el-button--primary) {
    background-color: #6c8ff8;
    border-color: #6c8ff8;
    &:hover {
      background-color: #5a7de8;
      border-color: #5a7de8;
    }
    &:active {
      background-color: #4a6dd8;
      border-color: #4a6dd8;
    }
  }
  .form-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    font-size: 14px;
    .link-text {
      color: #409eff;
      cursor: pointer;
      &:hover {
        text-decoration: underline;
      }
    }
  }
  .agreement-wrapper {
    display: flex;
    align-items: center;
    margin-top: 20px;
    font-size: 14px;
    color: #606266;
    :deep(.el-checkbox) {
      margin-right: 8px;
    }
    .agreement-text {
      .link-text {
        color: #409eff;
        cursor: pointer;
        &:hover {
          text-decoration: underline;
        }
      }
    }
  }
}
</style>
