Files
Codewalkers/apps/server/git/branch-manager.ts
Lukas May 2814c2d3b2 fix: Fetch remote before merge/push in initiative approval
approveInitiative was merging and pushing with a stale local
defaultBranch, causing "rejected (fetch first)" when origin/main
had advanced since the last project sync. Now fetches remote and
fast-forwards the target branch before merging.
2026-03-06 11:59:16 +01:00

92 lines
3.1 KiB
TypeScript

/**
* BranchManager Port Interface
*
* Manages branch-level git operations (create, merge, diff, delete)
* across project clones. Works directly on branches without requiring
* a worktree to be checked out.
*/
import type { MergeResult, MergeabilityResult, BranchCommit } from './types.js';
export interface BranchManager {
/**
* Ensure a branch exists. Creates it from baseBranch if it doesn't.
* Idempotent — no-op if the branch already exists.
*/
ensureBranch(repoPath: string, branch: string, baseBranch: string): Promise<void>;
/**
* Merge sourceBranch into targetBranch.
* Uses an ephemeral worktree for merge safety.
* Returns conflict info if merge fails.
*/
mergeBranch(repoPath: string, sourceBranch: string, targetBranch: string): Promise<MergeResult>;
/**
* Get the raw unified diff between two branches.
* Uses three-dot diff (baseBranch...headBranch) to show changes
* introduced by headBranch since it diverged from baseBranch.
*/
diffBranches(repoPath: string, baseBranch: string, headBranch: string): Promise<string>;
/**
* Delete a branch. No-op if the branch doesn't exist.
*/
deleteBranch(repoPath: string, branch: string): Promise<void>;
/**
* Check if a branch exists in the repository.
*/
branchExists(repoPath: string, branch: string): Promise<boolean>;
/**
* Check if a branch exists as a remote tracking branch (origin/<branch>).
* Useful for validating branch names against what the remote has,
* since local branches may not include all remote branches.
*/
remoteBranchExists(repoPath: string, branch: string): Promise<boolean>;
/**
* List commits that headBranch has but baseBranch doesn't.
* Used for commit-level navigation in code review.
*/
listCommits(repoPath: string, baseBranch: string, headBranch: string): Promise<BranchCommit[]>;
/**
* Get the raw unified diff for a single commit.
*/
diffCommit(repoPath: string, commitHash: string): Promise<string>;
/**
* Get the merge base (common ancestor) of two branches.
* Returns the commit hash of the merge base.
*/
getMergeBase(repoPath: string, branch1: string, branch2: string): Promise<string>;
/**
* Push a branch to a remote.
* Defaults to 'origin' if no remote specified.
*/
pushBranch(repoPath: string, branch: string, remote?: string): Promise<void>;
/**
* Dry-run merge check — determines if sourceBranch can be cleanly merged
* into targetBranch without actually performing the merge.
* Uses `git merge-tree --write-tree` (git 2.38+).
*/
checkMergeability(repoPath: string, sourceBranch: string, targetBranch: string): Promise<MergeabilityResult>;
/**
* Fetch all refs from a remote.
* Defaults to 'origin' if no remote specified.
*/
fetchRemote(repoPath: string, remote?: string): Promise<void>;
/**
* Fast-forward a local branch to match its remote-tracking counterpart.
* No-op if already up to date. Throws if fast-forward is not possible
* (i.e. the branches have diverged).
*/
fastForwardBranch(repoPath: string, branch: string, remote?: string): Promise<void>;
}