getCommitDiff function.

src/github-action.ts

@@ -19,8 +19,9 @@ if (PLATFORM === 'gitea' || PLATFORM === 'forgejo') {
   // Dynamically import the Gitea client
   try {
     const GiteaClient = require('@go-gitea/sdk.js').Gitea;
-    giteaClient = new GiteaClient(GITEA_URL, {
-      token: GITHUB_TOKEN
+    giteaClient = new GiteaClient({
+      baseUrl: GITEA_URL,
+      auth: GITHUB_TOKEN,
     });
   } catch (error) {
     core.error(`Failed to import Gitea client: ${error}`);
@@ -40,27 +41,38 @@ type Diff = string;
 async function getCommitDiff(commitSha: string): Promise<{ sha: SHA; diff: Diff }> {
   if (PLATFORM === 'gitea' || PLATFORM === 'forgejo') {
     try {
-      const commit = await giteaClient.getCommit(owner, repo, commitSha);
-      const diffResponse = await giteaClient.getRepoCommitDiff(owner, repo, commitSha);
-      return { sha: commitSha, diff: diffResponse.data };
+      const diffResponse =
+        await giteaClient.repository.repoDownloadCommitDiffOrPatch({
+          owner,
+          repo,
+          sha: commitSha,
+          diffType: 'diff',
+        });
+
+      return {
+        sha: commitSha,
+        diff: diffResponse.data,
+      };
     } catch (error) {
       core.error(`Failed to fetch Gitea/Forgejo commit diff: ${error}`);
       throw error;
     }
-  } else {
-    const diffResponse = await octokit.request<string>(
-      'GET /repos/{owner}/{repo}/commits/{ref}',
-      {
-        owner,
-        repo,
-        ref: commitSha,
-        headers: {
-          Accept: 'application/vnd.github.v3.diff'
-        }
-      }
-    );
-    return { sha: commitSha, diff: diffResponse.data };
   }
+
+  // GitHub fallback remains correct
+  const diffResponse = await octokit.request<string>(
+    'GET /repos/{owner}/{repo}/commits/{ref}',
+    {
+      owner,
+      repo,
+      ref: commitSha,
+      headers: {
+        Accept: 'application/vnd.github.v3.diff',
+      },
+    }
+  );
+
+  return { sha: commitSha, diff: diffResponse.data };
 }
 
 interface DiffAndSHA {