add leetCode parser

.gitignore

@@ -120,3 +120,4 @@ dist/
 
 # NPM (Yarn is used)
 .package-lock.json
+.cph

src/parsers/parsers.ts

@@ -70,6 +70,7 @@ import { HrbustOnlineJudgeProblemParser } from './problem/HrbustOnlineJudgeProbl
 import { HydroProblemParser } from './problem/HydroProblemParser';
 import { JutgeProblemParser } from './problem/JutgeProblemParser';
 import { KattisProblemParser } from './problem/KattisProblemParser';
+import { LeetCodeProblemParser } from './problem/LeetCodeProblemParser';
 import { LibraryCheckerProblemParser } from './problem/LibraryCheckerProblemParser';
 import { LibreOJProblemParser } from './problem/LibreOJProblemParser';
 import { LightOJProblemParser } from './problem/LightOJProblemParser';
@@ -262,4 +263,5 @@ export const parsers: Parser[] = [
 
   new YukicoderProblemParser(),
   new YukicoderContestParser(),
+  new LeetCodeProblemParser(),
 ];

src/parsers/problem/LeetCodeProblemParser.ts

@@ -0,0 +1,20 @@
+import { Sendable } from '../../models/Sendable';
+import { TaskBuilder } from '../../models/TaskBuilder';
+import { htmlToElement } from '../../utils/dom';
+import { Parser } from '../Parser';
+
+export class LeetCodeProblemParser extends Parser {
+  public getMatchPatterns(): string[] {
+    return ['https://leetcode.com/problems/*', 'https://leetcode.com/contests/*/problems/*'];
+  }
+
+  public async parse(url: string, html: string): Promise<Sendable> {
+    console.log('My script engaged!');
+    const elem = htmlToElement(html);
+    const task = new TaskBuilder('HackerEarth').setUrl(url);
+    const titleElement = elem.querySelector('[data-cy="question-title"]');
+    task.setName(titleElement ? titleElement.textContent.trim() : 'LeetCodeProblem');
+    task.setCategory(elem.querySelector('[diff]').textContent.trim());
+    return task.build();
+  }
+}