import _extends from 'babel-runtime/helpers/extends';
export function T() {
    return true;
}
// Fix IE file.status problem
// via coping a new Object
export function fileToObject(file) {
    return _extends(_extends({}, file), { lastModified: file.lastModified, lastModifiedDate: file.lastModifiedDate, name: file.name, size: file.size, type: file.type, uid: file.uid, percent: 0, originFileObj: file });
}
/**
 * 生成Progress percent: 0.1 -> 0.98
 *   - for ie
 */
export function genPercentAdd() {
    var k = 0.1;
    var i = 0.01;
    var end = 0.98;
    return function (s) {
        var start = s;
        if (start >= end) {
            return start;
        }
        start += k;
        k -= i;
        if (k < 0.001) {
            k = 0.001;
        }
        return start;
    };
}
export function getFileItem(file, fileList) {
    var matchKey = file.uid !== undefined ? 'uid' : 'name';
    return fileList.filter(function (item) {
        return item[matchKey] === file[matchKey];
    })[0];
}
export function removeFileItem(file, fileList) {
    var matchKey = file.uid !== undefined ? 'uid' : 'name';
    var removed = fileList.filter(function (item) {
        return item[matchKey] !== file[matchKey];
    });
    if (removed.length === fileList.length) {
        return null;
    }
    return removed;
}
// ==================== Default Image Preview ====================
var extname = function extname() {
    var url = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';

    var temp = url.split('/');
    var filename = temp[temp.length - 1];
    var filenameWithoutSuffix = filename.split(/#|\?/)[0];
    return (/\.[^./\\]*$/.exec(filenameWithoutSuffix) || [''])[0];
};
var isImageFileType = function isImageFileType(type) {
    return !!type && type.indexOf('image/') === 0;
};
export var isImageUrl = function isImageUrl(file) {
    if (isImageFileType(file.type)) {
        return true;
    }
    var url = file.thumbUrl || file.url;
    var extension = extname(url);
    if (/^data:image\//.test(url) || /(webp|svg|png|gif|jpg|jpeg|jfif|bmp|dpg|ico)$/i.test(extension)) {
        return true;
    }
    if (/^data:/.test(url)) {
        // other file types of base64
        return false;
    }
    if (extension) {
        // other file types which have extension
        return false;
    }
    return true;
};
var MEASURE_SIZE = 200;
export function previewImage(file) {
    return new Promise(function (resolve) {
        if (!isImageFileType(file.type)) {
            resolve('');
            return;
        }
        var canvas = document.createElement('canvas');
        canvas.width = MEASURE_SIZE;
        canvas.height = MEASURE_SIZE;
        canvas.style.cssText = 'position: fixed; left: 0; top: 0; width: ' + MEASURE_SIZE + 'px; height: ' + MEASURE_SIZE + 'px; z-index: 9999; display: none;';
        document.body.appendChild(canvas);
        var ctx = canvas.getContext('2d');
        var img = new Image();
        img.onload = function () {
            var width = img.width,
                height = img.height;

            var drawWidth = MEASURE_SIZE;
            var drawHeight = MEASURE_SIZE;
            var offsetX = 0;
            var offsetY = 0;
            if (width < height) {
                drawHeight = height * (MEASURE_SIZE / width);
                offsetY = -(drawHeight - drawWidth) / 2;
            } else {
                drawWidth = width * (MEASURE_SIZE / height);
                offsetX = -(drawWidth - drawHeight) / 2;
            }
            ctx.drawImage(img, offsetX, offsetY, drawWidth, drawHeight);
            var dataURL = canvas.toDataURL();
            document.body.removeChild(canvas);
            resolve(dataURL);
        };
        img.src = window.URL.createObjectURL(file);
    });
}