Frontend Test Generation & Code Review MCP Server

/** * FetchCommitChangesTool - 获取 Git commit 变更内容 */ import { z } from 'zod'; import { execSync } from 'node:child_process'; import { existsSync } from 'node:fs'; import { BaseTool, ToolMetadata } from '../core/base-tool.js'; import { parseDiff, generateNumberedDiff } from '../utils/diff-parser.js'; import type { Diff } from '../schemas/diff.js'; // Zod schema for FetchCommitChangesInput export const FetchCommitChangesInputSchema = z.object({ commitHash: z.string().describe('Git commit hash（支持短 hash）'), repoPath: z.string().optional().describe('本地仓库路径，默认为当前工作目录'), }); export interface FetchCommitChangesInput { commitHash: string; repoPath?: string; } export interface FetchCommitChangesOutput { diff: Diff; commitInfo: { hash: string; author: string; date: string; message: string; }; } export class FetchCommitChangesTool extends BaseTool<FetchCommitChangesInput, FetchCommitChangesOutput> { // Expose Zod schema for FastMCP getZodSchema() { return FetchCommitChangesInputSchema; } getMetadata(): ToolMetadata { return { name: 'fetch-commit-changes', description: '从本地 Git 仓库中获取指定 commit 的变更内容，包含带行号的 diff 以及 commit 元信息。', inputSchema: { type: 'object', properties: { commitHash: { type: 'string', description: 'Git commit hash（支持短 hash）', }, repoPath: { type: 'string', description: '本地仓库路径，默认为当前工作目录', }, }, required: ['commitHash'], }, category: 'code-retrieval', version: '3.0.0', }; } protected async executeImpl(input: FetchCommitChangesInput): Promise<FetchCommitChangesOutput> { const { commitHash, repoPath = process.cwd() } = input; if (!existsSync(repoPath)) { throw new Error(`Repository path does not exist: ${repoPath}`); } try { execSync('git rev-parse --git-dir', { cwd: repoPath, stdio: 'pipe', }); } catch { throw new Error(`Not a git repository: ${repoPath}`); } const commitInfoRaw = execSync( `git show --no-patch --format="%H%n%an%n%ai%n%s" ${commitHash}`, { cwd: repoPath, encoding: 'utf-8', } ); const [hash, author, date, message] = commitInfoRaw.trim().split('\n'); const diffRaw = execSync(`git show ${commitHash}`, { cwd: repoPath, encoding: 'utf-8', }); const diff = parseDiff(diffRaw, `commit:${commitHash}`, { title: message, summary: `Commit by ${author} on ${date}`, author, }); diff.numberedRaw = generateNumberedDiff(diff); return { diff, commitInfo: { hash, author, date, message, }, }; } }