/*******************************************************************

    Module        : /assets/js/download.js
    Desc.         : Fungsi-fungsi download data & laporan
    Created By    : Siau Pheng (siaupheng@3fonia.com).
    Created Date  : April 1st, 2011.
    Last Modified : November 2nd, 2026.

    (c) 3FONIA Software; WWW.3FONIA.COM.

*******************************************************************
 *
 * Class Download
 * 
 * Download atau Share file.
 *
 * @license MIT, https://www.3fonia.com
 * @copyright Copyright (c) 2008-2026, Siau Pheng <siaupheng@3fonia.com>
 * 
 * @param {object} options
 * @param {string} options.url - Endpoint URL File
 * @param {string} [options.filename='file.bin'] - Default file name for download is header is missing
 * @param {string} [options.title] - Title for share file
 * @param {string} [options.text] - Text for share file
 * @param {Array} [options.params] - Request payload
 */

class Download {
    constructor(options = {}) {
		this.url = typeof options === 'string' ? options : options.url || '';
		this.filename = options.filename || 'file.bin';
        this.title = options.title || '';
        this.text = options.text || '';
		this.params = options.params || [];
    }

    addParam(id, val) {
        this.params.push(val !== undefined ? `${id}=${encodeURIComponent(val)}` : id);
        return this;
    }

    async _exec(isShare = false) {
		if (!this.url) {
			console.warn('Url File Download dibutuhkan!');
			return;
		}
		await $.ajax({
			type: 'POST',
			url: this.url,
			data: FoniaJS.RequestParam(this.params),
			xhrFields: { responseType: 'blob' }
		})
		.done((blob, status, xhr) => {
			let filename = this.filename;
			const disposition = xhr.getResponseHeader('Content-Disposition');
			const match = disposition?.match(/filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/);
			if (match?.[1]) filename = match[1].replace(/['"]/g, '');

            if (!isShare) {
                const url = URL.createObjectURL(blob);
                const link = Object.assign(document.createElement('a'), {
                    href: url,
                    download: filename
                });
                link.click();
                URL.revokeObjectURL(url);
            } else {
                const file = new File([blob], filename, { type: blob.type });
                if (isShare && navigator.canShare?.({ files: [file] })) {
                    navigator.share({
                        files: [file],
                        title: this.title || filename,
                        text: this.text
                    });
                }
                file = null;
            }
		})
		.fail((xhr, status, err) => console.error('Gagal download File karena : ', err));
    }

    share() {
        return this._exec(true);
    }

    download() {
        return this._exec(false);
    }
}