import { readdirSync, readFileSync, existsSync, mkdirSync, cpSync, rmSync } from 'node:fs';
import { join } from 'node:path';
import { SEED_PATH, DATA_PATH } from './data-path';
import { parseSeedVersion } from './sync-version';

const SEED_TOOLS_DIR = join(SEED_PATH, 'tools');
const GLOBAL_TOOLS_DIR = join(DATA_PATH, 'tools');

export function syncSeedTools(): void {
  if (!existsSync(SEED_TOOLS_DIR)) return;

  mkdirSync(GLOBAL_TOOLS_DIR, { recursive: true });

  const seedEntries = readdirSync(SEED_TOOLS_DIR, { withFileTypes: true });

  for (const entry of seedEntries) {
    if (!entry.isDirectory()) continue;

    const seedToolDir = join(SEED_TOOLS_DIR, entry.name);
    const seedFile = join(seedToolDir, 'TOOL.md');
    if (!existsSync(seedFile)) continue;

    const targetDir = join(GLOBAL_TOOLS_DIR, entry.name);
    const targetFile = join(targetDir, 'TOOL.md');

    if (existsSync(targetDir)) {
      const seedVersion = parseSeedVersion(readFileSync(seedFile, 'utf-8'));
      const targetVersion = existsSync(targetFile) ? parseSeedVersion(readFileSync(targetFile, 'utf-8')) : 0;
      if (seedVersion <= targetVersion) continue;
      rmSync(targetDir, { recursive: true });
      console.log(`[tools] Updating seed tool: ${entry.name} (v${targetVersion} → v${seedVersion})`);
    }

    cpSync(seedToolDir, targetDir, { recursive: true });
    console.log(`[tools] Synced seed tool: ${entry.name}`);
  }
}