add cses and atcoder parsers

Author: xyzqm

src/components/Editor/parsers/ac.ts

@@ -0,0 +1,14 @@
+// example url: https://atcoder.jp/contests/arc084/tasks/arc084_b
+export default function parseAc(url: string, html: string) {
+  const titleRegex = /<span class="h2">[\r\n\t]+(.*?)[\r\n\t]+/;
+  const name = html.match(titleRegex)?.[1].split('-', 2)[1] ?? 'Unknown';
+  const uniqueId = `ac-${name.replace(/ /g, '').toLowerCase()}`;
+  return {
+    uniqueId,
+    name,
+    source: 'AC',
+    solutionMetadata: {
+      kind: 'CHANGE THIS',
+    },
+  };
+}

src/components/Editor/parsers/cses.ts

@@ -0,0 +1,14 @@
+// example url: https://cses.fi/problemset/task/1083
+export default function parseCses(url: string, html: string) {
+  const urlSplit = url.split('/');
+  const problemId = urlSplit.at(-1);
+  const titleRegex = /<h1>(.*?)<\/h1>/;
+  return {
+    uniqueId: `cses-${problemId}`, // e.g. cses-1083
+    name: html.match(titleRegex)?.[1] ?? 'Unknown',
+    source: 'CSES',
+    solutionMetadata: {
+      kind: 'CHANGE THIS',
+    },
+  };
+}

src/components/Editor/parsers/parse.ts

@@ -1,8 +1,12 @@
+import parseAc from './ac';
 import parseCf from './cf';
+import parseCses from './cses';
 import parseUsaco from './usaco';
 export const parsers = {
   'codeforces.com': parseCf,
   'usaco.org': parseUsaco,
+  'cses.fi': parseCses,
+  'atcoder.jp': parseAc,
 };
 export default function parse(url: string, html: string) {
   for (const [domain, parser] of Object.entries(parsers)) {