feat: using leetcode graphql api to get problem data

Author: kiing-dom

leetcodeApi.js

@@ -1,6 +1,6 @@
 async function fetchLeetCodeTags(slug) {
   const query = {
-    query: `\n            query getQuestionDetail($titleSlug: String!) {\n                question(titleSlug: $titleSlug) {\n                    topicTags { name slug }\n                }\n            }\n        `,
+    query: `query getQuestionDetail($titleSlug: String!) { question(titleSlug: $titleSlug) { topicTags { name slug } } }`,
     variables: { titleSlug: slug },
   };
 
@@ -17,3 +17,29 @@ async function fetchLeetCodeTags(slug) {
   const data = await response.json();
   return data.data?.question?.topicTags?.map((tag) => tag.name) || [];
 }
+
+async function fetchLeetCodeProblemData(slug) {
+  const query = {
+    query: `query getQuestionDetail($titleSlug: String!) { question(titleSlug: $titleSlug) { title difficulty topicTags { name slug } } }`,
+    variables: { titleSlug: slug },
+  };
+
+  const response = await fetch("https://leetcode.com/graphql", {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+    },
+    body: JSON.stringify(query),
+    credentials: "same-origin",
+  });
+
+  if (!response.ok) return null;
+  const data = await response.json();
+  const q = data.data?.question;
+  if (!q) return null;
+  return {
+    title: q.title,
+    difficulty: q.difficulty,
+    tags: q.topicTags?.map((tag) => tag.name) || [],
+  };
+}