refactor(tapops): modularize page code
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import { ScriptLoader } from './script-loader.js';
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import { ViewerApi } from './viewer-api.js';
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import { ViewerProgressBar } from './viewer-progress-bar.js';
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export class FileViewer {
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constructor() {
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const params = new URLSearchParams(window.location.search);
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this.id = params.get('id');
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this.name = params.get('name') || 'Dokumen';
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this.type = (params.get('type') || 'pdf').toLowerCase();
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this.titleEl = document.getElementById('viewer-title');
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this.typeBadgeEl = document.getElementById('viewer-type');
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this.downloadEl = document.getElementById('viewer-download');
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this.contentEl = document.getElementById('viewer-content');
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this.assetUrl = this.id ? ViewerApi.assetUrl(this.id) : null;
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}
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async init() {
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if (!this.id) {
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this._renderError('Parameter berkas tidak ditemukan di URL.');
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return;
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}
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document.title = `${this.name} — Pratinjau Dokumen`;
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this.titleEl.textContent = this.name;
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this.typeBadgeEl.textContent = this.type.toUpperCase();
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this._setupDownload();
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try {
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if (this.type === 'docx') {
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await this._renderDocx();
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} else {
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this._renderPdf();
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}
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} catch (err) {
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console.error(err);
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this._renderError('Gagal memuat pratinjau berkas. Silakan unduh berkas untuk membuka secara lokal.');
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}
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}
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_setupDownload() {
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const ext = `.${this.type}`;
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const filename = this.name.toLowerCase().endsWith(ext) ? this.name : `${this.name}${ext}`;
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this.downloadEl.removeAttribute('href');
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this.downloadEl.style.cursor = 'pointer';
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this.downloadEl.addEventListener('click', async event => {
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event.preventDefault();
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const originalHtml = this.downloadEl.innerHTML;
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this.downloadEl.innerHTML = '<i class="fas fa-spinner fa-spin"></i> Mengunduh…';
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this.downloadEl.style.pointerEvents = 'none';
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try {
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const blob = await ViewerApi.fetchBlob(this.assetUrl);
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const blobUrl = URL.createObjectURL(blob);
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const link = document.createElement('a');
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link.style.display = 'none';
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link.href = blobUrl;
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link.download = filename;
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document.body.appendChild(link);
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link.click();
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document.body.removeChild(link);
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URL.revokeObjectURL(blobUrl);
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} catch (err) {
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console.warn('Blob download failed, falling back:', err);
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window.open(`${this.assetUrl}?download`, '_blank');
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} finally {
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this.downloadEl.innerHTML = originalHtml;
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this.downloadEl.style.pointerEvents = '';
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}
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});
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}
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_renderPdf() {
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const iframe = document.createElement('iframe');
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iframe.className = 'viewer-pdf-frame';
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iframe.title = this.name;
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iframe.src = this.assetUrl;
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this.contentEl.replaceChildren(iframe);
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}
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async _renderDocx() {
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const progressBar = new ViewerProgressBar(this.contentEl);
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const [blob] = await Promise.all([
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ViewerApi.fetchBlob(this.assetUrl, ratio => progressBar.update(ratio)),
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this._loadDocxLibraries(),
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]);
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progressBar.finish();
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if (!window.docx || typeof window.docx.renderAsync !== 'function') {
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throw new Error('Library docx-preview belum dimuat.');
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}
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const container = document.createElement('div');
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container.className = 'viewer-docx-content';
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this.contentEl.replaceChildren(container);
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await window.docx.renderAsync(blob, container, null, {
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inWrapper: true,
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ignoreWidth: false,
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ignoreHeight: false,
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});
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}
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async _loadDocxLibraries() {
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if (window.docx) return;
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await ScriptLoader.load('https://unpkg.com/jszip@3.10.1/dist/jszip.min.js');
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await ScriptLoader.load('https://unpkg.com/docx-preview@0.3.5/dist/docx-preview.js');
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}
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_renderError(message) {
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const wrapper = document.createElement('div');
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wrapper.className = 'viewer-error';
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const icon = document.createElement('i');
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icon.className = 'fas fa-exclamation-triangle';
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const span = document.createElement('span');
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span.textContent = message;
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const back = document.createElement('a');
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back.href = 'index.html#repository';
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back.className = 'btn-back-mini';
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back.textContent = 'Kembali ke Repositori';
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wrapper.append(icon, span, back);
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this.contentEl.replaceChildren(wrapper);
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}
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}
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