<template>
    <view class="preview-container" v-if="show">
        <view class="header" @tap.stop :style="{ 'padding-top': statusBarHeight }">
            <image class="icon-back" src="/static/image/phone-message/oppo/back-white.png" @tap="close"></image>
            <image class="icon-download" src="/static/image/phone-message/oppo/save-white.png"></image>
        </view>
        <!-- 图片显示 -->
        <swiper class="preview-swiper" :current="current" @change="onChange">
            <swiper-item v-for="(imgSrc, index) in images" :key="index">
                <image class="preview-img" :src="imgSrc" mode="aspectFit"></image>
            </swiper-item>
        </swiper>
    </view>
</template>

<script setup>
import { ref, watch } from 'vue';

const statusBarHeight = (uni.getSystemInfoSync().statusBarHeight || 44) + 'px';

const props = defineProps({
    show: Boolean,
    images: {
        type: Array,
        default: () => []
    },
    currentIndex: {
        type: Number,
        default: 0
    }
});
const emit = defineEmits(['update:show']);

const current = ref(0);

watch(() => props.currentIndex, (val) => {
    current.value = val;
});

const onChange = (e) => {
    current.value = e.detail.current;
};

const close = () => {
    emit('update:show', false);
};

// const download = () => {
//     const currentSrc = props.images[current.value];
//     if (!currentSrc) return;

//     // 触发下载逻辑
//     uni.saveImageToPhotosAlbum({
//         filePath: currentSrc,
//         success: function () {
//             uni.showToast({
//                 title: '保存成功',
//                 icon: 'success'
//             });
//         },
//         fail: function () {
//             uni.showToast({
//                 title: '保存失败',
//                 icon: 'none'
//             });
//         }
//     });
// };
</script>

<style scoped>
.preview-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #000000;
    z-index: 999999;
    display: flex;
    flex-direction: column;
}

.header {
    box-sizing: content-box;
    width: 100%;
    /* 预留状态栏高度 */
    height: 98rpx;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    background-color: rgba(0, 0, 0, 0.6);
}

.icon-back {
    width: 48rpx;
    height: 48rpx;
    margin: 0 34rpx;
}

.icon-download {
    width: 48rpx;
    height: 48rpx;
    margin: 0 34rpx;
}

.preview-swiper {
    width: 100vw;
    height: 100vh;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.preview-img {
    width: 100%;
    height: 100%;
    display: block;
}
</style>
