风之大陆

function human_readable_size(bytes, decimals = 2) {
    if (!Number(bytes)) {
        return '0 Bytes';
    }

    const kbToBytes = 1024;
    const dm = decimals < 0 ? 0 : decimals;
    const sizes = [
        'Bytes',
        'KiB',
        'MiB',
        'GiB',
        'TiB',
        'PiB',
        'EiB',
        'ZiB',
        'YiB',
    ];

    const index = Math.floor(
        Math.log(bytes) / Math.log(kbToBytes),
    );

    return `${parseFloat(
    (bytes / Math.pow(kbToBytes, index)).toFixed(dm),
  )} ${sizes[index]}`;
}

function size_cached(cb) {
    uni.getStorageInfo({
        success: function({
            currentSize
        }) {
            cb(human_readable_size(currentSize))
        },
        fail: function() {
            cb("无法获取缓存信息")
        }
    })
}

function cache_clean() {
    uni.showModal({
        title: '提示',
        content: '您确定要清除缓存吗？',
        confirmText: '立即清除',
        success: function({
            confirm
        }) {
            if (confirm) {
                uni.clearStorageSync()
                uni.showToast({
                    title: "缓存已经成功清理"
                })
            }
        }
    })
}

export {
    size_cached,
    cache_clean
}