<template>
    <div class="header">
        <!-- 折叠按钮 -->
        <div class="collapse-btn" @click="collapseChage">
            <el-icon v-if="sidebar.collapse">
                <Expand />
            </el-icon>
            <el-icon v-else>
                <Fold />
            </el-icon>
        </div>
        <div class="logo">{{ settings.siteFullTitle }}</div>
        <div class="header-right">
            <div class="header-user-con">
                <!-- 消息中心 -->
                <div class="btn-bell" @click="router.push('/tabs')">
                    <el-tooltip effect="dark" :content="message ? `有${message}条未读消息` : `消息中心`" placement="bottom">
                        <i class="el-icon-lx-notice"></i>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message"></span>
                </div>
                <!-- 用户头像 -->
                <el-avatar class="user-avator" :size="30" :src="imgurl" />
                <!-- 用户名下拉菜单 -->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{ username }}
                        <el-icon class="el-icon--right">
                            <arrow-down />
                        </el-icon>
                    </span>
                    <template #dropdown>
                        <el-dropdown-menu>
                            <el-dropdown-item command="user">个人中心</el-dropdown-item>
                            <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                        </el-dropdown-menu>
                    </template>
                </el-dropdown>
            </div>
        </div>
    </div>
</template>
<script setup lang="ts">
import { onMounted } from 'vue';
import { useSidebarStore } from '../store/sidebar';
import { useTagsStore } from '../store/tags';
import { useRouter } from 'vue-router';
import { ElMessage } from 'element-plus';
import send_request from '../utils/send_request';
import imgurl from '../assets/img/img.jpg';
import settings from '../utils/settings';
import * as userApi from '../api/user';

const username: string | null = localStorage.getItem('ms_username');
const message: number = 2;

const sidebar = useSidebarStore();
// 侧边栏折叠
const collapseChage = () => {
    sidebar.handleCollapse();
};

onMounted(() => {
    // 网页打开时不折叠
    // if (document.body.clientWidth < 1500) {
    // 	collapseChage();
    // }
});

// 用户名下拉菜单选择事件
const router = useRouter();
const handleCommand = (command: string) => {
    if (command == 'loginout') {
        // 发送退出登录请求
        userApi.userLogout()
        // 关闭全部标签 (销毁页面对象)
        const tags = useTagsStore();
        tags.clearTags();
        // 清除本地 localStorage
        localStorage.clear();
        // 跳转到登录页面
        router.push({
            path: '/login',
            query: {
                redirectTo: router.currentRoute.value.path // window.location.href
            },
        });
        ElMessage.success('已退出登录');
    } else if (command == 'user') {
        router.push('/user');
    }
};
</script>
<style scoped>
.header {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    height: 70px;
    font-size: 22px;
    color: #fff;
}

.collapse-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    float: left;
    padding: 0 21px;
    cursor: pointer;
}

.header .logo {
    float: left;
    /* width: 250px; */
    line-height: 70px;
    /* 系统名称不换行 */
    white-space: nowrap;
}

.header-right {
    float: right;
    padding-right: 50px;
}

.header-user-con {
    display: flex;
    height: 70px;
    align-items: center;
}

.btn-fullscreen {
    transform: rotate(45deg);
    margin-right: 5px;
    font-size: 24px;
}

.btn-bell,
.btn-fullscreen {
    position: relative;
    width: 30px;
    height: 30px;
    text-align: center;
    border-radius: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.btn-bell-badge {
    position: absolute;
    right: 4px;
    top: 0px;
    width: 8px;
    height: 8px;
    border-radius: 4px;
    background: #f56c6c;
    color: #fff;
}

.btn-bell .el-icon-lx-notice {
    color: #fff;
}

.user-name {
    margin-left: 10px;
}

.user-avator {
    margin-left: 20px;
}

.el-dropdown-link {
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.el-dropdown-menu__item {
    text-align: center;
}
</style>
