<template>
  <div class="layout">
    <div class="tab-box">
      <div class="flex-center-col pt-2 mb-2">
        <div class="flex flex-center-col">
          <div class="menuIcon" @click="store.setChatListExtend(!store.chatListExtend)">
            <el-tooltip content="隐藏对话列表" placement="right" v-if="store.chatListExtend">
              <i class="iconfont icon-colspan"></i>
            </el-tooltip>
            <el-tooltip content="展开对话列表" placement="right" v-else>
              <i class="iconfont icon-expand"></i>
            </el-tooltip>
          </div>
        </div>
      </div>

      <div class="menu-list">
        <ul>
          <li
            class="menu-list-item flex-center-col"
            v-for="item in mainNavs"
            :key="item.url"
            @click="changeNav(item)"
            :class="item.url === curPath ? 'active' : ''"
          >
            <span v-if="item.icon.startsWith('icon')">
              <i class="iconfont" :class="item.icon"></i>
            </span>
            <el-image :src="item.icon" class="el-icon ml-1" v-else />
            <div class="menu-title">
              {{ item.name }}
            </div>
          </li>
        </ul>

        <!-- 更多 -->
        <div class="bot p-2">
          <div class="bot-line"></div>
          <el-popover v-if="moreNavs.length > 0" placement="right-end" trigger="hover">
            <template #reference>
              <li class="menu-list-item flex-center-col">
                <i class="iconfont icon-more" />
              </li>
            </template>
            <template #default>
              <ul class="more-menus">
                <li
                  v-for="(item, index) in moreNavs"
                  :key="item.url"
                  :class="{
                    active: item.url === curPath,
                    moreTitle: index !== 3 && index !== 4,
                    twoTittle: index === 3 || index === 4,
                  }"
                >
                  <a @click="changeNav(item)">
                    <span v-if="item.icon.startsWith('icon')" class="mr-2">
                      <i class="iconfont" :class="item.icon"></i>
                    </span>
                    <el-image :src="item.icon" style="width: 20px; height: 20px" v-else />
                    <span :class="item.url === curPath ? 'title active' : 'title'">{{ item.name }}</span>
                  </a>
                </li>
              </ul>
            </template>
          </el-popover>
          <el-popover placement="right-end" trigger="hover" v-if="loginUser.id">
            <template #reference>
              <li class="menu-list-item flex-center-col">
                <i class="iconfont icon-config" />
              </li>
            </template>
            <template #default>
              <ul class="more-menus setting-menus">
                <li>
                  <div @click="showConfigDialog = true" class="flex">
                    <el-icon>
                      <UserFilled />
                    </el-icon>
                    <span class="username title">{{ loginUser.nickname }}</span>
                  </div>
                </li>
                <li v-if="!license.de_copy">
                  <a :href="githubURL" target="_blank" class="flex">
                    <i class="iconfont icon-github"></i>
                    <span class="title">项目源码</span>
                  </a>
                </li>
                <li>
                  <a @click="logout" class="flex">
                    <i class="iconfont icon-logout"></i>
                    <span class="title">退出登录</span>
                  </a>
                </li>
              </ul>
            </template>
          </el-popover>
          <div class="menu-bot-item">
            <a @click="router.push('/')" class="link-button">
              <i class="iconfont icon-house"></i>
            </a>
            <div class="pl-1">
              <ThemeChange size="small" />
            </div>
          </div>
        </div>
      </div>
    </div>
    <el-scrollbar class="right-main">
      <div class="topheader" v-if="loginUser.id === undefined || !loginUser.id">
        <el-button @click="router.push('/login')" class="btn-go animate__animated animate__pulse animate__infinite" round>登录</el-button>
      </div>
      <div class="content custom-scroll">
        <router-view :key="routerViewKey" v-slot="{ Component }">
          <transition name="move" mode="out-in">
            <component :is="Component"></component>
          </transition>
        </router-view>
      </div>
      <!-- </div> -->
    </el-scrollbar>
    <config-dialog v-if="loginUser.id" :show="showConfigDialog" @hide="showConfigDialog = false" />

    <el-dialog v-model="showLoginDialog" width="500px" @close="store.setShowLoginDialog(false)">
      <template #header>
        <div class="text-center text-xl" style="color: var(--theme-text-color-primary)">登录后解锁功能</div>
      </template>
      <div class="p-4 pt-2 pb-2">
        <LoginDialog @success="loginSuccess" @hide="store.setShowLoginDialog(false)" />
      </div>
    </el-dialog>
  </div>
</template>

<script setup>
import { UserFilled } from "@element-plus/icons-vue";
import ThemeChange from "@/components/ThemeChange.vue";
import { useRouter } from "vue-router";
import { computed, onMounted, ref, watch } from "vue";
import { httpGet } from "@/utils/http";
import { ElMessage } from "element-plus";
import { checkSession, getLicenseInfo, getSystemInfo } from "@/store/cache";
import { removeUserToken } from "@/store/session";
import { useSharedStore } from "@/store/sharedata";
import ConfigDialog from "@/components/UserInfoDialog.vue";
import { showMessageError } from "@/utils/dialog";
import LoginDialog from "@/components/LoginDialog.vue";

const router = useRouter();
const logo = ref("");
const mainNavs = ref([]);
const moreNavs = ref([]);
const curPath = ref();

const title = ref("");
const store = useSharedStore();
const loginUser = ref({});
const routerViewKey = ref(0);
const showConfigDialog = ref(false);
const license = ref({ de_copy: true });
const showLoginDialog = ref(false);
const githubURL = ref(process.env.VUE_APP_GITHUB_URL);

/**
 * 从路径名中提取第一个路径段
 * @param pathname - URL 的路径名部分，例如 '/chat/12345'
 * @returns 第一个路径段（不含斜杠），例如 'chat'，如果不存在则返回 null
 */
const extractFirstSegment = (pathname) => {
  const segments = pathname.split("/").filter((segment) => segment.length > 0);
  return segments.length > 0 ? segments[0] : null;
};
const getFirstPathSegment = (url) => {
  try {
    // 尝试使用 URL 构造函数解析完整的 URL
    const parsedUrl = new URL(url);
    return extractFirstSegment(parsedUrl.pathname);
  } catch (error) {
    // 如果解析失败，假设是相对路径，使用当前窗口的位置作为基准
    if (typeof window !== "undefined") {
      const parsedUrl = new URL(url, window.location.origin);
      return extractFirstSegment(parsedUrl.pathname);
    }
    // 如果无法解析，返回 null
    return null;
  }
};

const stars = computed(() => {
  return 1000;
});

watch(
  () => store.showLoginDialog,
  (newValue) => {
    showLoginDialog.value = newValue;
  }
);

// 监听路由变化;
router.beforeEach((to, from, next) => {
  curPath.value = to.path;
  next();
});

if (curPath.value === "/external") {
  curPath.value = router.currentRoute.value.query.url;
}
const changeNav = (item) => {
  curPath.value = item.url;
  if (item.url.indexOf("http") !== -1) {
    // 外部链接
    router.push({ path: "/external", query: { url: item.url, title: item.name } });
  } else {
    // 路由切换，确保路径变化
    if (router.currentRoute.value.path !== item.url) {
      router.push(item.url).then(() => {
        // 刷新 `routerViewKey` 触发视图重新渲染
        routerViewKey.value += 1;
      });
    }
  }
};

onMounted(() => {
  curPath.value = router.currentRoute.value.path;
  getSystemInfo()
    .then((res) => {
      logo.value = res.data.logo;
      title.value = res.data.title;
    })
    .catch((e) => {
      ElMessage.error("获取系统配置失败：" + e.message);
    });
  // 获取菜单
  httpGet("/api/menu/list")
    .then((res) => {
      mainNavs.value = res.data;
      // 根据窗口的高度计算应该显示多少菜单
      const rows = Math.floor((window.innerHeight - 100) / 90);
      if (res.data.length > rows) {
        mainNavs.value = res.data.slice(0, rows);
        moreNavs.value = res.data.slice(rows);
      }
    })
    .catch((e) => {
      ElMessage.error("获取系统菜单失败：" + e.message);
    });

  getLicenseInfo()
    .then((res) => {
      license.value = res.data;
    })
    .catch((e) => {
      license.value = { de_copy: false };
      showMessageError("获取 License 配置：" + e.message);
    });
  curPath.value = "/" + getFirstPathSegment(window.location.href);
  init();
});

const init = () => {
  checkSession()
    .then((user) => {
      loginUser.value = user;
    })
    .catch(() => {});
};

const logout = function () {
  httpGet("/api/user/logout")
    .then(() => {
      removeUserToken();
      router.push("/login");
    })
    .catch(() => {
      ElMessage.error("注销失败！");
    });
};

const loginSuccess = () => {
  init();
  store.setShowLoginDialog(false);
  // 刷新组件
  routerViewKey.value += 1;
};
</script>

<style lang="stylus" scoped>
@import "@/assets/css/custom-scroll.styl"
@import "@/assets/css/home.styl"
</style>
