import { createClient } from '@libsql/client';
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
// Navigate from scripts/ to server/ root, then to prisma/
const dbPath = path.join(__dirname, '..', 'prisma', 'dev.db');
const prismaDir = path.dirname(dbPath);

// Ensure prisma directory exists
if (!fs.existsSync(prismaDir)) {
  fs.mkdirSync(prismaDir, { recursive: true });
  console.log('Created prisma directory');
}

console.log('Database path:', dbPath);

// Ensure file exists
if (!fs.existsSync(dbPath)) {
  fs.writeFileSync(dbPath, '');
  console.log('Created empty database file');
}

const db = createClient({
  url: `file:${dbPath}`,
});

console.log('LibSQL client created');

// Create tables
await db.execute(`
  CREATE TABLE IF NOT EXISTS users (
    id TEXT PRIMARY KEY,
    email TEXT UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    nickname TEXT,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
  )
`);
console.log('Created users table');

await db.execute(`
  CREATE TABLE IF NOT EXISTS events (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL,
    type TEXT NOT NULL,
    title TEXT NOT NULL,
    content TEXT,
    date DATETIME NOT NULL,
    is_lunar INTEGER DEFAULT 0,
    repeat_type TEXT DEFAULT 'none',
    is_holiday INTEGER DEFAULT 0,
    is_completed INTEGER DEFAULT 0,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
  )
`);
console.log('Created events table');

await db.execute(`CREATE INDEX IF NOT EXISTS idx_events_user_id ON events(user_id)`);
await db.execute(`CREATE INDEX IF NOT EXISTS idx_events_type ON events(type)`);
await db.execute(`CREATE INDEX IF NOT EXISTS idx_events_date ON events(date)`);

await db.execute(`
  CREATE TABLE IF NOT EXISTS notes (
    id TEXT PRIMARY KEY,
    user_id TEXT UNIQUE NOT NULL,
    content TEXT,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
  )
`);
console.log('Created notes table');

await db.execute(`
  CREATE TABLE IF NOT EXISTS ai_coach_conversations (
    id TEXT PRIMARY KEY,
    user_id TEXT NOT NULL,
    message TEXT NOT NULL,
    response TEXT NOT NULL,
    parsed_data TEXT,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
  )
`);
console.log('Created ai_coach_conversations table');

await db.execute(`CREATE INDEX IF NOT EXISTS idx_ai_conversations_user_id ON ai_coach_conversations(user_id)`);

// Verify
const tables = await db.execute("SELECT name FROM sqlite_master WHERE type='table'");
console.log('Tables:', tables.rows.map(r => r.name).join(', '));

console.log('\nDatabase initialized successfully!');