/**
 * brainbank reindex [path] — Nuke data and re-index from scratch.
 *
 * Deletes the .brainbank/data/ directory (SQLite DB + HNSW index)
 * then runs a headless `index --yes` to rebuild everything.
 */

import * as fs from 'node:fs';
import * as path from 'node:path';
import { c, args, stripFlags } from '@/cli/utils.ts';
import { cmdIndex } from './index.ts';

export async function cmdReindex(): Promise<void> {
    const positional = stripFlags(args);
    const repoPath = path.resolve(positional[1] || '.');
    const dataDir = path.join(repoPath, '.brainbank', 'data');

    if (fs.existsSync(dataDir)) {
        const entries = fs.readdirSync(dataDir);
        console.log(c.bold('\n━━━ Reindex ━━━\n'));
        console.log(`  ${c.yellow('✗')} Deleting ${path.relative(process.cwd(), dataDir)}/ (${entries.length} files)`);
        fs.rmSync(dataDir, { recursive: true, force: true });
        console.log(`  ${c.green('✓')} Data cleared\n`);
    } else {
        console.log(c.bold('\n━━━ Reindex ━━━\n'));
        console.log(c.dim('  No existing data — fresh index\n'));
    }

    // Inject --yes into args so index runs headless (no TUI)
    if (!args.includes('--yes') && !args.includes('-y')) {
        args.push('--yes');
    }

    // Force re-index all files
    if (!args.includes('--force')) {
        args.push('--force');
    }

    return cmdIndex();
}