<template>
    <!-- 卡片 -->
    <div class="card-container">
        <div v-for="(live, index) in liveList" :key="index" class="card">
            <div class="cover-image" :class="{ 'no-overlay': !live.status == 1 }" style="position:relative;">
                <img :src=live.cover alt="节目1">
                <div v-if="live.status == 1" class="overlay">即将开播</div>
                <div v-if="live.status == 1" class="start-time">{{ getDateDay(live.startTime) }} {{ live.startTime.slice(11, 16) }}开播</div>
            </div>
            <div class="card-content">
                <div class="card-title">{{ live.liveName }}</div>
                <div class="card-actions">
                    <!-- 用户头像 -->
                    <img :src=live.user.avatar alt="节目1" class="user-avatar">
                    <!-- 用户昵称，与头像同行显示 -->
                    <div class="card-info">{{ live.user.userName }}</div>
                    <!-- 预约按钮,如果预约过了，按钮变灰色，文字变灰色，按钮文字为“已预约” -->
                    <a v-if="live.reservation == 0" href="#" class="card-button"
                        @click="booking(live.id, live.user.userId)">预约</a>
                    <a v-else href="#" class="card-button" style="background-color: #ccc;">已预约</a>
                </div>
            </div>
        </div>
    </div>
</template>


<script setup>
import { ref } from 'vue';
/*
模拟后端数据
*/
const liveList = ref([]);


//获取直播列表
function getLive() {
    liveList.value = [
        {
            id: 1,
            cover: "src/assets/live.jpg",
            user: {
                userId: 1,
                userName: "冷辉老师",
                avatar: "src/assets/live.jpg"
            },
            liveName: "猎庄之顶级波段",
            startTime: "2024-12-01 09:55",
            reservation: 1, //0表示未预约，1表示已预约
            status: 1 //0表示未开播，1表示已开播
        },
        {
            id: 2,
            cover: "src/assets/live.jpg",
            user: {
                userId: 2,
                userName: "冷辉老师",
                avatar: "src/assets/live.jpg"
            },
            liveName: "猎庄之顶级波段",
            startTime: "2024-12-01 09:55",
            reservation: 1, //0表示未预约，1表示已预约
            status: 1
        },
        {
            id: 3,
            cover: "src/assets/live.jpg",
            user: {
                userId: 3,
                userName: "冷辉老师",
                avatar: "src/assets/live.jpg"
            },
            liveName: "猎庄之顶级波段",
            startTime: "2024-11-30 12:55",
            reservation: 1, //0表示未预约，1表示已预约
            status: 1
        },
        {
            id: 4,
            cover: "src/assets/live.jpg",
            user: {
                userId: 4,
                userName: "冷辉老师",
                avatar: "src/assets/live.jpg"
            },
            liveName: "猎庄之顶级波段",
            startTime: "2024-12-30 12:55",
            reservation: 0, //0表示未预约，1表示已预约
            status: 1
        },
        {
            id: 5,
            cover: "src/assets/live.jpg",
            user: {
                userId: 5,
                userName: "冷辉老师",
                avatar: "src/assets/live.jpg"
            },
            liveName: "猎庄之顶级波段",
            startTime: "2024-12-30 12:55",
            reservation: 0, //0表示未预约，1表示已预约
            status: 1,
        }
    ]
}
getLive();

// 判断开播日期与当前时间的关系（今天、明天、其他）
function getDateDay(startTime) {
    const now = new Date();
    const start = new Date(startTime);
    const oneDay = 24 * 60 * 60 * 1000; // 一天的毫秒数
    if (now.toDateString() == start.toDateString()) {
        return "今天";
    } else if (now.getTime() + oneDay >= start.getTime()) {
        return "明天";
    } else {
        return startTime.slice(5, 10);
    }
}

// //获取用户信息
// const userInfo = ref([]);
// function getUserInfo() {
//     userInfo.value = {
//         userId: 1,
//         userName: "冷辉老师",
//         avatar: "src/assets/live.jpg",
//         //预约信息
//         reservationList: [1,2,3]
//     }
// }
// getUserInfo();

// console.log(userInfo.value);

// /* 判断预约状态 */
// function isBooking(liveId) {
//     for (let i = 0; i < userInfo.value.reservationList.length; i++) {
//         if (userInfo.value.reservationList[i] == liveId) {
//             return true;
//         }
//     }
//     return false;
// }



/*点击预约按钮以后显示预约成功的提示，并将按钮变为不可点击状态，且将按钮的文字改为“已预约”，并将按钮的背景颜色改为灰色*/
function booking(liveId, userId) {
    alert("预约成功！");
}

</script>


<style scoped>
.card-container {
    /*居中显示*/
    margin-left: auto;
    margin-right: auto;
    /*宽度*/
    width: 916px;
    font-family: Arial, sans-serif;
    padding: 0;
    flex-wrap: wrap;
    /*超出自动换行*/
    background-color: #f4f4f4;
    display: flex;
    align-items: center;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin: 10px;
    overflow: hidden;
    border: #666;
    height: 190px;
    width: 209px;
}

.card .cover-image img {
    width: 100%;
    height: 100%;
    /*图片占满整个卡片*/
    object-fit: cover;
    border-radius: 8px;
}

.cover-image {
    position: relative;
    height: 120px;
    width: 208px;
    border-radius: 8px;
}

/*即将开播图层*/
.overlay {
    position: absolute;
    z-index: 2;
    text-align: center;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 18px;
}

/*开播时间*/
.start-time {
    position: absolute;
    z-index: 2;
    text-align: center;
    top: 60%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffffaf;
    font-size: 15px;
    width: 120px;
}

.cover-image::before {
    content: " ";
    position: absolute;
    top: 0;
    left: 0;
    width: 207px;
    height: 120px;
    /*最后一个参数是半透明度，可以透过调整0-1的数值，调整到满意的透明度*/
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
}

/*用于隐藏样式*/
.cover-image.no-overlay::before {
    display: none;
}

.card-content {
    padding: 8px;
}

.card-title {
    font-size: 13px;
    font-weight: bold;
    margin-bottom: 5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;

}

.card-info {
    font-size: 14px;
    color: #666;
}

.card-button {
    display: inline-block;
    padding: 5px 5px;
    background-color: #eb8b31;
    color: #fff;
    text-decoration: none;
    border-radius: 20px;
    font-size: small;
    width: 50px;
    text-align: center;
    margin-left: auto;
}

.card-actions {
    display: flex;
    align-items: center;
    /* 垂直居中对齐 */
    justify-content: space-between;
    /* 按钮右对齐 */
}

.user-avatar {
    border-radius: 50%;
    width: 20px;
    height: 20px;
}

.card-info {
    margin-left: 5px;
    /* 昵称与头像之间的间距 */
    margin-top: 0;
    /* 移除顶部外边距 */
    /*超长以后将内容省略显示*/
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;

    width: 90px;
    font-size: 12px;
}
</style>