<template>
  <div class="login">
    <img src="../assets/images/logo.png" class="logo" alt="logo" />
    <div class="login-container">
      <!-- 左侧插图区域 -->
      <!-- <div class="login-left">
        <img
          src="../assets/images/login-box-bg.svg"
          alt="登录插图"
          class="login-illustration"
        />
      </div> -->

      <!-- 右侧登录表单区域 -->
      <div class="login-right">
        <el-form
          ref="loginRef"
          :model="loginForm"
          :rules="loginRules"
          class="login-form"
        >
          <h3 class="title-text">品号高效检索系统</h3>
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              size="large"
              auto-complete="off"
              placeholder="请输入工号"
            >
              <template #prefix
                ><svg-icon icon-class="user" class="el-input__icon input-icon"
              /></template>
            </el-input>
          </el-form-item>
          <el-form-item prop="password">
            <el-input
              v-model="loginForm.password"
              :type="showPassword ? 'text' : 'password'"
              size="large"
              auto-complete="off"
              placeholder="请输入密码"
              @keyup.enter="handleLogin"
            >
              <template #prefix
                ><svg-icon
                  icon-class="password"
                  class="el-input__icon input-icon"
              /></template>
              <template #suffix>
                <el-icon
                  class="password-eye-icon"
                  @click="togglePasswordVisibility"
                  style="cursor: pointer"
                >
                  <View v-if="!showPassword" />
                  <Hide v-else />
                </el-icon>
              </template>
            </el-input>
          </el-form-item>
          <el-form-item prop="code" v-if="captchaEnabled">
            <el-input
              v-model="loginForm.code"
              size="large"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter="handleLogin"
            >
              <template #prefix
                ><svg-icon
                  icon-class="validCode"
                  class="el-input__icon input-icon"
              /></template>
            </el-input>
            <div class="login-code">
              <img :src="codeUrl" @click="getCode" class="login-code-img" />
            </div>
          </el-form-item>
          <el-checkbox
            v-model="loginForm.rememberMe"
            style="margin: 0px 0px 25px 0px"
            >记住密码</el-checkbox
          >
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="large"
              type="primary"
              style="width: 100%"
              @click.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
            <div style="float: right" v-if="register">
              <router-link class="link-type" :to="'/register'"
                >立即注册</router-link
              >
            </div>
          </el-form-item>
        </el-form>
      </div>
    </div>

    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2015-2025</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from "@/store/modules/user";

const userStore = useUserStore();
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: "",
});

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);
// 密码显示/隐藏
const showPassword = ref(false);

// 动态验证规则
const loginRules = computed(() => {
  const rules = {
    username: [{ required: true, trigger: "blur", message: "请输入您的工号" }],
    password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  };
  if (captchaEnabled.value) {
    rules.code = [
      { required: true, trigger: "change", message: "请输入验证码" },
    ];
  }
  return rules;
});

watch(
  route,
  (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
  },
  { immediate: true }
);

function handleLogin() {
  proxy.$refs.loginRef.validate((valid) => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), {
          expires: 30,
        });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore
        .login(loginForm.value)
        .then(() => {
          const query = route.query;
          const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
            if (cur !== "redirect") {
              acc[cur] = query[cur];
            }
            return acc;
          }, {});
          router.push({ path: redirect.value || "/", query: otherQueryParams });
        })
        .catch(() => {
          loading.value = false;
          // 重新获取验证码
          if (captchaEnabled.value) {
            getCode();
          }
        });
    }
  });
}

function getCode() {
  getCodeImg().then((res) => {
    captchaEnabled.value =
      res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password:
      password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
  };
}

function togglePasswordVisibility() {
  showPassword.value = !showPassword.value;
}

getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  width: 100%;
  position: relative;
  background-image: url("../assets/images/bg.jpg");
  background-repeat: no-repeat;
  background-size: 100% 100%;
  background-clip: padding-box;
  overflow: visible;
  background-position: center;
  background-attachment: fixed;
  box-sizing: border-box;
}
.logo {
  position: absolute;
  top: 70px;
  left: 80px;
  width: 30%;
}
.login-container {
  display: flex;
  width: 100%;
  max-width: 1400px;
  min-height: 100vh;
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  justify-content: flex-end;
  align-items: center;
  padding: 40px 60px;
}

.login-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  box-sizing: border-box;
  width: 100%;
  max-width: 500px;
}

.title-text {
  font-family: "PingFang SC", SimHei, sans-serif;
  margin: 0 auto 35px;
  text-align: center;
  color: #017d9c;
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 0.5px;
  line-height: 1.4;
  width: 100%;
  box-sizing: border-box;
}

.login-form {
  border-radius: 16px;
  background: #ffffff;
  width: 420px;
  min-width: 420px;
  max-width: 420px;
  padding: 50px 40px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  box-sizing: border-box;
  flex-shrink: 0;

  :deep(.el-form-item) {
    margin-bottom: 15px;

    &:last-child {
      margin-bottom: 0;
    }
  }

  :deep(.el-input__wrapper) {
    border-radius: 8px;
    box-shadow: 0 0 0 1px #dcdfe6 inset;
    transition: all 0.3s;

    &:hover {
      box-shadow: 0 0 0 1px #c0c4cc inset;
    }

    &.is-focus {
      box-shadow: 0 0 0 1px #409eff inset;
    }
  }

  :deep(.el-input__inner) {
    font-size: 14px;
    color: #333;

    &::placeholder {
      color: #a8abb2;
      font-size: 14px;
    }
  }

  .el-input {
    height: 48px;

    input {
      height: 48px;
      line-height: 48px;
    }
  }

  .input-icon {
    height: 48px;
    width: 16px;
    margin-left: 0px;
    color: #909399;
  }

  .password-eye-icon {
    color: #909399;
    font-size: 18px;
    transition: color 0.2s;
    cursor: pointer;

    &:hover {
      color: #409eff;
    }
  }

  :deep(.el-button--primary) {
    background-color: #017d9c;
    border-color: #017d9c;
    height: 48px;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 2px;
    border-radius: 8px;
    transition: all 0.3s;

    &:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(32, 178, 170, 0.3);
    }

    &:active {
      transform: translateY(0);
    }
  }

  :deep(.el-checkbox) {
    margin-bottom: 20px;

    .el-checkbox__label {
      color: #666;
      font-size: 14px;
      padding-left: 8px;
    }

    .el-checkbox__input.is-checked .el-checkbox__inner {
      background-color: #017d9c;
      border-color: #017d9c;
    }
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 36%;
  height: 48px;
  float: right;
  display: flex;
  align-items: center;
  justify-content: center;

  img {
    cursor: pointer;
    vertical-align: middle;
    height: 48px;
    border-radius: 8px;
    border: 1px solid #dcdfe6;
    transition: all 0.2s;

    &:hover {
      border-color: #409eff;
    }
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #999;
  font-family: Arial, sans-serif;
  font-size: 12px;
  letter-spacing: 0.5px;
  z-index: 10;
  background: transparent;
  pointer-events: none;

  span {
    display: inline-block;
    opacity: 0.8;
  }
}

.login-code-img {
  height: 48px;
  padding-left: 0;
  width: 100%;
}

// 响应式设计
@media (max-width: 1024px) {
  .login-container {
    justify-content: center;
    padding: 40px 40px;
  }

  .login-right {
    max-width: 100%;
    width: 100%;
  }

  .login-form {
    width: 100%;
    max-width: 420px;
    min-width: 320px;
    padding: 45px 35px;
  }
}

@media (max-width: 768px) {
  .login-container {
    padding: 30px 20px;
    justify-content: center;
    align-items: center;
  }

  .login-right {
    width: 100%;
    max-width: 100%;
  }

  .login-form {
    width: 100%;
    max-width: 100%;
    min-width: 280px;
    padding: 35px 28px;
  }

  .title-text {
    font-size: 28px;
    margin-bottom: 30px;
  }
}

@media (max-width: 480px) {
  .login-container {
    padding: 20px 15px;
  }

  .login-form {
    padding: 30px 20px;
    border-radius: 12px;
  }

  .title-text {
    font-size: 24px;
    margin-bottom: 25px;
  }
}
</style>
