feat: add getMissingData action for fast-forward refs

Author: jescalada

src/proxy/processors/push-action/getMissingData.ts

@@ -0,0 +1,52 @@
+import { Action, Step } from '../../actions';
+import { validateUser } from './checkUserPushPermission';
+import simpleGit from 'simple-git';
+
+const exec = async (req: any, action: Action): Promise<Action> => {
+  const step = new Step('getMissingData');
+
+  try {
+    if (!action.commitData) {
+      action.commitData = [];
+    }
+
+    if (action.commitData.length === 0) {
+      console.log(`commitData not found, fetching missing commits from git...`);
+      const path = `${action.proxyGitPath}/${action.repoName}`;
+      const git = simpleGit(path);
+      const log = await git.log({ from: action.commitFrom, to: action.commitTo });
+
+      action.commitData = log.all.toReversed().map((entry, i, array) => {
+        const parent = i === 0 ? action.commitFrom : array[i - 1].hash;
+        const timestamp = Math.floor(new Date(entry.date).getTime() / 1000).toString();
+        return {
+          message: entry.message || '',
+          committer: entry.author_name || '',
+          tree: entry.hash || '',
+          parent: parent || '0'.repeat(40),
+          author: entry.author_name || '',
+          authorEmail: entry.author_email || '',
+          commitTimestamp: timestamp,
+        }
+      });
+      console.log(`Updated commitData:`, { commitData: action.commitData });
+
+      if (action.commitFrom === '0000000000000000000000000000000000000000') {
+        action.commitFrom = action.commitData[action.commitData.length - 1].parent;
+      }
+      const user = action.commitData[action.commitData.length - 1].committer;
+      action.user = user;
+
+      return await validateUser(user, action, step);
+    }
+  } catch (e: any) {
+    step.setError(e.toString('utf-8'));
+  } finally {
+    action.addStep(step);
+  }
+  return action;
+};
+
+exec.displayName = 'getMissingData.exec';
+
+export { exec };