function formattedFiles(list) {
    if (list.length == 0) return [];
    let suffixList = {
            image: ['png', 'jpg', 'jpeg', 'bmp', 'gif', 'webp', 'svg', 'tiff'],
            video: ['mp4', 'ogg', 'webm'],
            word: ['doc', 'docx'],
            excel: ['xls', 'xlsx'],
            ppt: ['ppt', 'pptx'],
            txt: ['txt', 'md', 'js', 'json'],
            pdf: ['pdf'],
            rar: ['7z', 'zip', 'rar', 'kz', 'ace', 'arj', 'bz2', 'cab', 'gz', 'iso', 'jar', 'lzh', 'tar', 'z'],
            folder: ['folder']
        },
        typeList = [];
    for (let key in suffixList) typeList.push(key);
    for (let i = 0; i < list.length; i++) {
        list[i].fileType = 'unknown';
        const suffix = list[i].postfix.toLowerCase();
        if (suffix != "folder") {
            for (var key in suffixList) {
                if (suffixList[key].some(value => value == suffix)) list[i].fileType = key;
            }
        } else {
            list[i].fileType = "folder";
        }
    }
    return list;
}

/* 预览媒体 */
function viewMedias(files, index, type) {
    // #ifndef MP
    if (type == 'image') {
        uni.previewImage({
            current: index,
            urls: files,
            loop: true,
        })
    } else {
        window.open(files[index].url)
    }
    // #endif
    // #ifdef MP-WEIXIN
    wx.previewMedia({
        current: index,
        sources: files,
    })
    // #endif       
}
/* 预览文档 */
function viewFlies(item) {
    uni.showLoading({
        title: '加载中...',
    })
    uni.downloadFile({
        url: item.url,
        complete({
            statusCode,
            tempFilePath
        }) {
            if (statusCode != 200) return;
            uni.openDocument({
                filePath: tempFilePath,
                fileType: item.postfix,
                showMenu: true,
                complete({
                    errMsg
                }) {
                    uni.hideLoading();
                    if (errMsg != "openDocument:ok") uni.showToast({
                        title: '打开失败',
                        icon: "none"
                    })
                }
            })
        }
    })
}
module.exports = {
    viewMedias,
    viewFlies,
    formattedFiles
}