feat: Create Compare Endpoint

Author: O2sa

app/api/compare/route.ts

@@ -0,0 +1,48 @@
+import { NextResponse } from "next/server";
+import { fetchGitHubUserData } from "../../../lib/github";
+import { calculateUserScore } from "../../../lib/score";
+
+export const runtime = "nodejs";
+
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url);
+  const usernames = searchParams.getAll("username");
+
+  if (usernames.length === 0) {
+    return NextResponse.json(
+      { success: false, error: "provide at least one username param" },
+      { status: 400 }
+    );
+  }
+
+  try {
+    const results = await Promise.all(
+      usernames.map(async (username) => {
+        const data = await fetchGitHubUserData(username);
+        const score = calculateUserScore(data, username);
+
+        return {
+          username,
+          repoScore: score.repoScore,
+          prScore: score.prScore,
+          contributionScore: score.contributionScore,
+          finalScore: score.finalScore,
+          topRepos: score.topRepos,
+          topPullRequests: score.topPullRequests,
+        };
+      })
+    );
+
+    return NextResponse.json({ success: true, users: results });
+  } catch (error: any) {
+    console.error("GitHub score error:", error);
+    const message =
+      error?.message === "User not found"
+        ? "GitHub user not found"
+        : "Failed to calculate score";
+    return NextResponse.json(
+      { success: false, error: message },
+      { status: 500 }
+    );
+  }
+}