/**
 * KHAELOR
 * File: tests/repository/fixtures.ts
 * Description: Test fixtures — temp dirs and real `git init` repositories for repository-module tests.
 *
 * Author: Simon-Pierre Boucher
 * Contact: contact@spboucher.ai
 */

import { execFileSync } from "node:child_process";
import { mkdtempSync, mkdirSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import * as path from "node:path";

/** Run a real git command in a fixture repo with fully-isolated identity/config. */
export function runGit(dir: string, args: string[]): string {
  return execFileSync("git", args, {
    cwd: dir,
    encoding: "utf8",
    env: {
      ...process.env,
      GIT_CONFIG_NOSYSTEM: "1",
      GIT_CONFIG_GLOBAL: "/dev/null",
      GIT_AUTHOR_NAME: "KHAELOR Test",
      GIT_AUTHOR_EMAIL: "test@spboucher.ai",
      GIT_COMMITTER_NAME: "KHAELOR Test",
      GIT_COMMITTER_EMAIL: "test@spboucher.ai",
    },
  });
}

/** Create a fresh temp dir (caller removes it in afterEach). */
export function makeTempDir(prefix: string): string {
  return mkdtempSync(path.join(tmpdir(), prefix));
}

/** `git init -b main` in dir. */
export function initRepo(dir: string): void {
  runGit(dir, ["init", "-qb", "main"]);
}

/** Stage everything and commit. */
export function commitAll(dir: string, message: string): void {
  runGit(dir, ["add", "-A"]);
  runGit(dir, ["commit", "-qm", message, "--no-gpg-sign"]);
}

/** Write a file, creating parent directories. */
export function writeFixtureFile(dir: string, rel: string, content: string | Buffer): void {
  const abs = path.join(dir, rel);
  mkdirSync(path.dirname(abs), { recursive: true });
  writeFileSync(abs, content);
}