init

lib/git.ts

@@ -0,0 +1,95 @@
+// Git helpers for branch validation and commit operations
+import { execSync } from "child_process"
+
+export function getCurrentBranch(cwd = process.cwd()): string {
+  return execSync("git rev-parse --abbrev-ref HEAD", { cwd, encoding: "utf-8" }).trim()
+}
+
+export function isClean(cwd = process.cwd()): boolean {
+  const status = execSync("git status --porcelain", { cwd, encoding: "utf-8" }).trim()
+  return status === ""
+}
+
+export function commitFile(path: string, message: string, cwd = process.cwd()): void {
+  execSync(`git add ${path}`, { cwd })
+  execSync(`git commit -m ${JSON.stringify(message)}`, { cwd })
+}
+
+export function commitFileWithBody(path: string, header: string, body: string, cwd = process.cwd()): void {
+  execSync(`git add ${path}`, { cwd })
+  const msg = `${header}\n\n${body}`
+  execSync(`git commit -m ${JSON.stringify(msg)}`, { cwd })
+}
+
+export function branchExists(branch: string, cwd = process.cwd()): boolean {
+  try {
+    execSync(`git rev-parse --verify ${branch}`, { cwd, stdio: "pipe" })
+    return true
+  } catch {
+    return false
+  }
+}
+
+// Parse the issue branch name into type and ID
+export function parseIssueBranch(branch: string): { type: string; id: number } | null {
+  const match = branch.match(/^(feature|bugfix|hotfix)\/(\d+)$/)
+  if (!match) return null
+  return { type: match[1], id: Number(match[2]) }
+}
+
+export interface GitCommit {
+  hash: string
+  subject: string
+  body: string
+}
+
+// Get commits on current branch since it diverged from a base branch
+export function getCommitsSinceDiverge(base = "develop", cwd = process.cwd()): GitCommit[] {
+  return parseGitLog(`${base}..HEAD`, cwd)
+}
+
+// Get commits from a ref spec (e.g. HEAD~3..HEAD)
+export function getCommitsFromRef(refSpec: string, cwd = process.cwd()): GitCommit[] {
+  return parseGitLog(refSpec, cwd)
+}
+
+// Get all commits on a branch
+export function getAllCommits(branch: string, cwd = process.cwd()): GitCommit[] {
+  return parseGitLog(branch, cwd)
+}
+
+function parseGitLog(range: string, cwd: string): GitCommit[] {
+  const SEP = "---COMMIT-SEP---"
+  const format = `%H%n%s%n%b%n${SEP}`
+  let output: string
+  try {
+    output = execSync(
+      `git log ${range} --format=${JSON.stringify(format)}`,
+      { cwd, encoding: "utf-8" }
+    )
+  } catch {
+    return []
+  }
+
+  const commits: GitCommit[] = []
+  const entries = output.split(SEP).filter(e => e.trim())
+
+  for (const entry of entries) {
+    const lines = entry.trim().split("\n")
+    if (lines.length < 2) continue
+    commits.push({
+      hash: lines[0],
+      subject: lines[1],
+      body: lines.slice(2).join("\n").trim(),
+    })
+  }
+
+  return commits
+}
+
+// Check if a commit subject is a todo transition
+export function parseTodoTransition(subject: string): { issueId: number; status: string } | null {
+  const match = subject.match(/^todo\((\d+)\):\s*(\S+)/)
+  if (!match) return null
+  return { issueId: Number(match[1]), status: match[2] }
+}