e0ad428a9f
This improves error messages throughout. It might sometimes be too verbose, but that's better than being opaque (#74). Also upgrades Deno's patch version. Fixes #74
389 lines
12 KiB
TypeScript
389 lines
12 KiB
TypeScript
import { useSignal } from '@preact/signals';
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import { NewsFeed } from '/lib/types.ts';
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import { escapeHtml, validateUrl } from '/lib/utils/misc.ts';
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import { RequestBody as AddRequestBody, ResponseBody as AddResponseBody } from '/routes/api/news/add-feed.tsx';
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import { RequestBody as DeleteRequestBody, ResponseBody as DeleteResponseBody } from '/routes/api/news/delete-feed.tsx';
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import {
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RequestBody as ImportRequestBody,
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ResponseBody as ImportResponseBody,
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} from '/routes/api/news/import-feeds.tsx';
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interface FeedsProps {
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initialFeeds: NewsFeed[];
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}
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function formatNewsFeedsToOpml(feeds: NewsFeed[]) {
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return `<?xml version="1.0" encoding="UTF-8"?>
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<opml version="2.0">
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<head>
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<title>Subscriptions</title>
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</head>
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<body>
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${
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feeds.map((feed) =>
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`<outline title="${escapeHtml(feed.extra.title || '')}" text="${escapeHtml(feed.extra.title || '')}" type="${
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feed.extra.feed_type || 'rss'
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}" xmlUrl="${escapeHtml(feed.feed_url)}" htmlUrl="${escapeHtml(feed.feed_url)}"/>`
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).join('\n ')
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}
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</body>
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</opml>`;
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}
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function parseOpmlFromTextContents(html: string): string[] {
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const feedUrls: string[] = [];
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const document = new DOMParser().parseFromString(html, 'text/html');
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const feeds = Array.from(document.getElementsByTagName('outline'));
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for (const feed of feeds) {
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const url = (feed.getAttribute('xmlUrl') || feed.getAttribute('htmlUrl') || '').trim();
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if (validateUrl(url)) {
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feedUrls.push(url);
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}
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}
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return feedUrls;
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}
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export default function Feeds({ initialFeeds }: FeedsProps) {
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const isAdding = useSignal<boolean>(false);
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const isDeleting = useSignal<boolean>(false);
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const isExporting = useSignal<boolean>(false);
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const isImporting = useSignal<boolean>(false);
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const feeds = useSignal<NewsFeed[]>(initialFeeds);
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const isOptionsDropdownOpen = useSignal<boolean>(false);
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const dateFormat = new Intl.DateTimeFormat('en-GB', { dateStyle: 'medium', timeStyle: 'short' });
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async function onClickAddFeed() {
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if (isAdding.value) {
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return;
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}
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const url = (prompt(`What's the **URL** for the new feed?`) || '').trim();
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if (!url) {
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alert('A URL is required for a new feed!');
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return;
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}
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if (!validateUrl(url)) {
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alert('Invalid URL!');
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return;
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}
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isAdding.value = true;
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try {
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const requestBody: AddRequestBody = { feedUrl: url };
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const response = await fetch(`/api/news/add-feed`, {
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method: 'POST',
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body: JSON.stringify(requestBody),
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});
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if (!response.ok) {
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throw new Error(`Failed to add feed. ${response.statusText} ${await response.text()}`);
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}
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const result = await response.json() as AddResponseBody;
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if (!result.success) {
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throw new Error('Failed to add feed!');
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}
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feeds.value = [...result.newFeeds];
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} catch (error) {
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console.error(error);
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}
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isAdding.value = false;
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}
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function toggleOptionsDropdown() {
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isOptionsDropdownOpen.value = !isOptionsDropdownOpen.value;
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}
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async function onClickDeleteFeed(feedId: string) {
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if (confirm('Are you sure you want to delete this feed and all its articles?')) {
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if (isDeleting.value) {
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return;
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}
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isDeleting.value = true;
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try {
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const requestBody: DeleteRequestBody = { feedId };
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const response = await fetch(`/api/news/delete-feed`, {
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method: 'POST',
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body: JSON.stringify(requestBody),
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});
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if (!response.ok) {
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throw new Error(`Failed to delete feed. ${response.statusText} ${await response.text()}`);
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}
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const result = await response.json() as DeleteResponseBody;
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if (!result.success) {
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throw new Error('Failed to delete feed!');
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}
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feeds.value = [...result.newFeeds];
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} catch (error) {
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console.error(error);
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}
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isDeleting.value = false;
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}
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}
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function onClickImportOpml() {
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isOptionsDropdownOpen.value = false;
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if (isImporting.value) {
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return;
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}
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const fileInput = document.createElement('input');
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fileInput.type = 'file';
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fileInput.click();
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fileInput.onchange = (event) => {
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const files = (event.target as HTMLInputElement)?.files!;
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const file = files[0];
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if (!file) {
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return;
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}
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const reader = new FileReader();
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reader.onload = async (fileRead) => {
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const importFileContents = fileRead.target?.result;
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if (!importFileContents || isImporting.value) {
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return;
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}
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isImporting.value = true;
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try {
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const feedUrls = parseOpmlFromTextContents(importFileContents!.toString());
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const requestBody: ImportRequestBody = { feedUrls };
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const response = await fetch(`/api/news/import-feeds`, {
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method: 'POST',
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body: JSON.stringify(requestBody),
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});
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if (!response.ok) {
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throw new Error(`Failed to import feeds. ${response.statusText} ${await response.text()}`);
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}
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const result = await response.json() as ImportResponseBody;
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if (!result.success) {
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throw new Error('Failed to import feeds!');
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}
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feeds.value = [...result.newFeeds];
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} catch (error) {
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console.error(error);
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}
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isImporting.value = false;
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};
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reader.readAsText(file, 'UTF-8');
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};
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}
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function onClickExportOpml() {
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isOptionsDropdownOpen.value = false;
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if (isExporting.value) {
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return;
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}
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isExporting.value = true;
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const fileName = `feeds-${new Date().toISOString().substring(0, 19).replace(/:/g, '-')}.opml`;
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const exportContents = formatNewsFeedsToOpml([...feeds.peek()]);
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// Add content-type
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const xmlContent = `data:application/xml; charset=utf-8,${exportContents}`;
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// Download the file
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const data = encodeURI(xmlContent);
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const link = document.createElement('a');
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link.setAttribute('href', data);
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link.setAttribute('download', fileName);
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link.click();
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link.remove();
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isExporting.value = false;
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}
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return (
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<>
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<section class='flex flex-row items-center justify-between mb-4'>
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<a href='/news' class='mr-2'>View articles</a>
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<section class='flex items-center'>
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<section class='relative inline-block text-left ml-2'>
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<div>
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<button
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type='button'
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class='inline-flex w-full justify-center gap-x-1.5 rounded-md bg-slate-700 px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-slate-600'
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id='filter-button'
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aria-expanded='true'
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aria-haspopup='true'
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onClick={() => toggleOptionsDropdown()}
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>
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OPML
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<svg class='-mr-1 h-5 w-5 text-slate-400' viewBox='0 0 20 20' fill='currentColor' aria-hidden='true'>
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<path
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fill-rule='evenodd'
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d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z'
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clip-rule='evenodd'
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/>
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</svg>
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</button>
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</div>
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<div
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class={`absolute right-0 z-10 mt-2 w-44 origin-top-right rounded-md bg-slate-700 shadow-lg ring-1 ring-black ring-opacity-15 focus:outline-none ${
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!isOptionsDropdownOpen.value ? 'hidden' : ''
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}`}
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role='menu'
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aria-orientation='vertical'
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aria-labelledby='filter-button'
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tabindex={-1}
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>
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<div class='py-1'>
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<button
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class={`text-white block px-4 py-2 text-sm w-full text-left hover:bg-slate-600`}
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onClick={() => onClickImportOpml()}
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type='button'
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>
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Import OPML
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</button>
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<button
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class={`text-white block px-4 py-2 text-sm w-full text-left hover:bg-slate-600`}
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onClick={() => onClickExportOpml()}
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type='button'
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>
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Export OPML
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</button>
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</div>
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</div>
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</section>
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<button
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class='inline-block justify-center gap-x-1.5 rounded-md bg-[#51A4FB] px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-sky-400 ml-2'
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type='button'
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title='Add new feed'
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onClick={() => onClickAddFeed()}
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>
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<img
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src='/images/add.svg'
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alt='Add new feed'
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class={`white ${isAdding.value ? 'animate-spin' : ''}`}
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width={20}
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height={20}
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/>
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</button>
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</section>
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</section>
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<section class='mx-auto max-w-7xl my-8'>
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<table class='w-full border-collapse bg-gray-900 text-left text-sm text-slate-500 shadow-sm rounded-md'>
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<thead>
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<tr>
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<th scope='col' class='px-6 py-4 font-medium text-white'>Title & URL</th>
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<th scope='col' class='px-6 py-4 font-medium text-white'>Last Crawl</th>
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<th scope='col' class='px-6 py-4 font-medium text-white'>Type</th>
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<th scope='col' class='px-6 py-4 font-medium text-white w-20'></th>
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</tr>
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</thead>
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<tbody class='divide-y divide-slate-600 border-t border-slate-600'>
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{feeds.value.map((newsFeed) => (
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<tr class='bg-slate-700 hover:bg-slate-600 group'>
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<td class='flex gap-3 px-6 py-4 font-normal text-white'>
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<div class='text-sm'>
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<div class='font-medium text-white'>{newsFeed.extra.title || 'N/A'}</div>
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<div class='text-slate-400'>{newsFeed.feed_url}</div>
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</div>
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</td>
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<td class='px-6 py-4 text-slate-200'>
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{newsFeed.last_crawled_at ? dateFormat.format(new Date(newsFeed.last_crawled_at)) : 'N/A'}
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</td>
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<td class='px-6 py-4'>
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<div class='text-xs font-semibold text-slate-200'>
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{newsFeed.extra.feed_type?.split('').map((character) => character.toUpperCase()).join('') || 'N/A'}
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</div>
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</td>
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<td class='px-6 py-4'>
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<span
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class='invisible cursor-pointer group-hover:visible opacity-50 hover:opacity-100'
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onClick={() => onClickDeleteFeed(newsFeed.id)}
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>
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<img
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src='/images/delete.svg'
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class='red drop-shadow-md'
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width={24}
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height={24}
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alt='Delete feed'
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title='Delete feed'
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/>
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</span>
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</td>
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</tr>
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))}
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{feeds.value.length === 0
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? (
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<tr class='hover:bg-slate-600'>
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<td class='flex gap-3 px-6 py-4 font-normal' colspan={4}>
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<div class='text-md'>
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<div class='font-medium text-slate-400'>No feeds to show</div>
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</div>
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</td>
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</tr>
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)
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: null}
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</tbody>
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</table>
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<span
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class={`flex justify-end items-center text-sm mt-1 mx-2 text-slate-100`}
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>
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{isDeleting.value
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? (
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<>
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<img src='/images/loading.svg' class='white mr-2' width={18} height={18} />Deleting...
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</>
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)
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: null}
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{isExporting.value
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? (
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<>
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<img src='/images/loading.svg' class='white mr-2' width={18} height={18} />Exporting...
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</>
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)
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: null}
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{isImporting.value
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? (
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<>
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<img src='/images/loading.svg' class='white mr-2' width={18} height={18} />Importing...
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</>
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)
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: null}
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{!isDeleting.value && !isExporting.value && !isImporting.value ? <> </> : null}
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</span>
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</section>
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</>
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);
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}
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