a50ee01626
Creates diff-cache.ts module with generic DiffCache<T> class (TTL, prefix invalidation, env-var configuration) and exports phaseMetaCache / fileDiffCache singletons. Wires cache into getPhaseReviewDiff via getHeadCommitHash on BranchManager. Adds 6 unit tests for DiffCache and 5 integration tests verifying cache hit/miss behaviour, prefix invalidation, and NOT_FOUND guard. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
119 lines
4.3 KiB
TypeScript
119 lines
4.3 KiB
TypeScript
/**
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* BranchManager Port Interface
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*
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* Manages branch-level git operations (create, merge, diff, delete)
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* across project clones. Works directly on branches without requiring
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* a worktree to be checked out.
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*/
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import type { MergeResult, MergeabilityResult, BranchCommit, FileStatEntry } from './types.js';
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export interface BranchManager {
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/**
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* Ensure a branch exists. Creates it from baseBranch if it doesn't.
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* Idempotent — no-op if the branch already exists.
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*/
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ensureBranch(repoPath: string, branch: string, baseBranch: string): Promise<void>;
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/**
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* Merge sourceBranch into targetBranch.
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* Uses an ephemeral worktree for merge safety.
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* Returns conflict info if merge fails.
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*/
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mergeBranch(repoPath: string, sourceBranch: string, targetBranch: string): Promise<MergeResult>;
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/**
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* Get the raw unified diff between two branches.
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* Uses three-dot diff (baseBranch...headBranch) to show changes
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* introduced by headBranch since it diverged from baseBranch.
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*/
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diffBranches(repoPath: string, baseBranch: string, headBranch: string): Promise<string>;
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/**
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* Get per-file metadata for changes between two branches.
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* Uses three-dot diff (baseBranch...headBranch) — same divergence model as diffBranches.
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* Binary files are included with status 'binary' and additions/deletions both 0.
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* Does NOT return hunk content.
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*/
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diffBranchesStat(repoPath: string, baseBranch: string, headBranch: string): Promise<FileStatEntry[]>;
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/**
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* Get the raw unified diff for a single file between two branches.
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* Uses three-dot diff (baseBranch...headBranch).
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* Returns empty string for binary files (caller must detect binary separately).
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* filePath must be URL-decoded before being passed here.
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*/
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diffFileSingle(repoPath: string, baseBranch: string, headBranch: string, filePath: string): Promise<string>;
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/**
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* Returns the current HEAD commit hash (40-char SHA) for the given branch in the repo.
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*/
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getHeadCommitHash(repoPath: string, branch: string): Promise<string>;
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/**
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* Delete a branch. No-op if the branch doesn't exist.
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*/
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deleteBranch(repoPath: string, branch: string): Promise<void>;
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/**
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* Check if a branch exists in the repository.
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*/
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branchExists(repoPath: string, branch: string): Promise<boolean>;
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/**
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* Check if a branch exists as a remote tracking branch (origin/<branch>).
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* Useful for validating branch names against what the remote has,
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* since local branches may not include all remote branches.
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*/
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remoteBranchExists(repoPath: string, branch: string): Promise<boolean>;
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/**
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* List commits that headBranch has but baseBranch doesn't.
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* Used for commit-level navigation in code review.
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*/
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listCommits(repoPath: string, baseBranch: string, headBranch: string): Promise<BranchCommit[]>;
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/**
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* Get the raw unified diff for a single commit.
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*/
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diffCommit(repoPath: string, commitHash: string): Promise<string>;
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/**
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* Get the merge base (common ancestor) of two branches.
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* Returns the commit hash of the merge base.
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*/
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getMergeBase(repoPath: string, branch1: string, branch2: string): Promise<string>;
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/**
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* Push a branch to a remote.
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* Defaults to 'origin' if no remote specified.
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*/
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pushBranch(repoPath: string, branch: string, remote?: string): Promise<void>;
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/**
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* Dry-run merge check — determines if sourceBranch can be cleanly merged
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* into targetBranch without actually performing the merge.
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* Uses `git merge-tree --write-tree` (git 2.38+).
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*/
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checkMergeability(repoPath: string, sourceBranch: string, targetBranch: string): Promise<MergeabilityResult>;
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/**
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* Fetch all refs from a remote.
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* Defaults to 'origin' if no remote specified.
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*/
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fetchRemote(repoPath: string, remote?: string): Promise<void>;
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/**
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* Fast-forward a local branch to match its remote-tracking counterpart.
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* No-op if already up to date. Throws if fast-forward is not possible
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* (i.e. the branches have diverged).
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*/
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fastForwardBranch(repoPath: string, branch: string, remote?: string): Promise<void>;
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/**
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* Force-update a branch ref to point at a specific commit.
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* Used to roll back a merge when a subsequent push fails.
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*/
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updateRef(repoPath: string, branch: string, commitHash: string): Promise<void>;
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}
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