import { existsSync } from "node:fs";
import { mkdir, writeFile, rm } from "node:fs/promises";
import { join } from "node:path";
import { runInit } from "../../src/commands/init.ts";
import { loadConfig, getChangeDir } from "../../src/core/config.ts";
import type { RuneConfig } from "../../src/types.ts";

const TMP_DIR = join(import.meta.dir, "__tmp_agent_test__");

export function getTempDir(): string {
  return TMP_DIR;
}

export async function setupTempDir(): Promise<void> {
  await rm(TMP_DIR, { recursive: true, force: true });
  await mkdir(TMP_DIR, { recursive: true });
}

export async function cleanupTempDir(): Promise<void> {
  await rm(TMP_DIR, { recursive: true, force: true });
}

export async function createFreshProject(editors: string[] = ["opencode"]): Promise<RuneConfig> {
  await runInit(TMP_DIR, editors);
  return loadConfig(TMP_DIR);
}

export async function createChangeDir(changeName: string): Promise<string> {
  const dir = getChangeDir(TMP_DIR, changeName);
  await mkdir(dir, { recursive: true });
  return dir;
}

export async function writeDoc(
  changeName: string,
  docName: string,
  content: string,
): Promise<void> {
  const dir = getChangeDir(TMP_DIR, changeName);
  await mkdir(dir, { recursive: true });
  await writeFile(join(dir, `${docName}.md`), content);
}

export function changeFileExists(changeName: string, fileName: string): boolean {
  return existsSync(join(getChangeDir(TMP_DIR, changeName), fileName));
}