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

	Module        : /assets/js/pdf.js
	Desc.         : JS - Cetak Laporan PDF
	Created By    : Siau Pheng (siaupheng@3fonia.com).
	Created Date  : April 6th, 2015.
	Last Modified : November 2nd, 2026.

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

*******************************************************************
 *
 * Class Pdf
 * 
 * Preview dan download file pdf.
 *
 * @license MIT, https://www.3fonia.com
 * @copyright Copyright (c) 2008-2026, Siau Pheng <siaupheng@3fonia.com>
 * 
 * @param {object} options
 * @param {string} options.url - Endpoint PDF File URL
 * @param {number} [options.zoom=80] - Zoom percentage in PDF viewer
 * @param {string} [options.filename='report.pdf'] - Default file name for download is header is missing
 * @param {Array} [options.params] - Request payload
 */

class Pdf {
  	constructor(options = {}) {
		this.url = typeof options === 'string' ? options : options.url || '';
		this.zoom = options.zoom || 80;
		this.filename = options.filename || 'report.pdf';
		this.params = options.params || [];
  	}

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

  	async downloadPdf() {
		if (!this.url) {
			console.warn('Url PDF 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, '');
			const url = URL.createObjectURL(blob);
			const link = Object.assign(document.createElement('a'), {
				href: url,
				download: filename
			});
			link.click();
			URL.revokeObjectURL(url);
		})
		.fail((xhr, status, err) => console.error('Gagal proses download PDF karena : ', err));
  	}

  	async showPdf() {
		if (!this.url) {
			console.warn('Url PDF 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, '');

			const objectUrl = URL.createObjectURL(blob);
			const pdfSrc = `${objectUrl}#zoom=${zoom}&page=1`;

			const modalHtml = `
			<div class="modal fade" id="winAPPPDF" tabindex="-1" data-bs-backdrop="static" aria-labelledby="winAPPPDFLabel" aria-hidden="true">
			<div class="modal-dialog modal-dialog-centered modal-xl" style="height: 90vh;">
				<div class="modal-content h-100">
					<div class="modal-header">
						<h5 class="modal-title" id="winAPPPDFLabel">${filename}</h5>
						<div class="ms-auto d-flex align-items-center gap-2">
							<a href="${objectUrl}" download="${filename}" class="btn btn-sm btn-outline-primary">
								<i class="bi bi-download"></i> Download
							</a>
							<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
						</div>
					</div>
					<div class="modal-body p-0 h-100">
						<object data="${pdfSrc}" type="application/pdf" class="w-100 h-100">
							<iframe src="${pdfSrc}" class="w-100 h-100" style="border: none;">
							<p class="p-3">Ada kendala dalam Preview PDF di browser Anda. 
								<a href="${objectUrl}" download="${filename}">Unduh ${filename}</a> instead.
							</p>
							</iframe>
						</object>
					</div>
				</div>
				</div>
			</div>
			`;

			$('#winAPPPDF').modal('dispose').remove();
			$(modalHtml)
				.appendTo('body')
				//.on('shown.bs.modal', () => FoniaJS.FormDecorated())
				.on('hidden.bs.modal', function () {
					URL.revokeObjectURL(objectUrl);
					$(this).remove();
				})
				.modal('show');
		})
		.fail((xhr, status, err) => console.error('Gagal proses preview PDF karena : ', err));
	}
}