v1.0.1

src/github/utils/local-git.ts

@@ -0,0 +1,96 @@
+#!/usr/bin/env bun
+
+import { $ } from "bun";
+
+/**
+ * Check if a branch exists locally using git commands
+ */
+export async function branchExists(branchName: string): Promise<boolean> {
+  try {
+    await $`git show-ref --verify --quiet refs/heads/${branchName}`;
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Check if a remote branch exists using git commands
+ */
+export async function remoteBranchExists(branchName: string): Promise<boolean> {
+  try {
+    await $`git show-ref --verify --quiet refs/remotes/origin/${branchName}`;
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Get the SHA of a branch using git commands
+ */
+export async function getBranchSha(branchName: string): Promise<string | null> {
+  try {
+    // Try local branch first
+    if (await branchExists(branchName)) {
+      const result = await $`git rev-parse refs/heads/${branchName}`;
+      return result.text().trim();
+    }
+
+    // Try remote branch if local doesn't exist
+    if (await remoteBranchExists(branchName)) {
+      const result = await $`git rev-parse refs/remotes/origin/${branchName}`;
+      return result.text().trim();
+    }
+
+    return null;
+  } catch (error) {
+    console.error(`Error getting SHA for branch ${branchName}:`, error);
+    return null;
+  }
+}
+
+/**
+ * Check if a branch has commits different from base branch
+ */
+export async function branchHasChanges(
+  branchName: string,
+  baseBranch: string,
+): Promise<{
+  hasChanges: boolean;
+  branchSha: string | null;
+  baseSha: string | null;
+}> {
+  try {
+    const branchSha = await getBranchSha(branchName);
+    const baseSha = await getBranchSha(baseBranch);
+
+    if (!branchSha || !baseSha) {
+      return { hasChanges: false, branchSha, baseSha };
+    }
+
+    const hasChanges = branchSha !== baseSha;
+    return { hasChanges, branchSha, baseSha };
+  } catch (error) {
+    console.error(
+      `Error comparing branches ${branchName} and ${baseBranch}:`,
+      error,
+    );
+    return { hasChanges: false, branchSha: null, baseSha: null };
+  }
+}
+
+/**
+ * Fetch latest changes from remote to ensure we have up-to-date branch info
+ */
+export async function fetchBranch(branchName: string): Promise<boolean> {
+  try {
+    await $`git fetch origin ${branchName}`;
+    return true;
+  } catch (error) {
+    console.log(
+      `Could not fetch branch ${branchName} from remote (may not exist yet)`,
+    );
+    return false;
+  }
+}