import Database from 'better-sqlite3'
import { join, dirname } from 'path'
import { fileURLToPath } from 'url'
import fs from 'fs'

const __dirname = dirname(fileURLToPath(import.meta.url))
const projectRoot = join(__dirname, '..', '..')
const dataDir = join(projectRoot, 'data')
const dbPath = join(dataDir, 'sports.db')

if (!fs.existsSync(dataDir)) {
  fs.mkdirSync(dataDir, { recursive: true })
}

const db = new Database(dbPath)

// 初始化数据库表
db.exec(`
  CREATE TABLE IF NOT EXISTS events (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL,
    category TEXT NOT NULL,
    event_group TEXT NOT NULL,
    unit TEXT NOT NULL,
    status TEXT DEFAULT 'pending',
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
  );

  CREATE TABLE IF NOT EXISTS teams (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL,
    team_group TEXT NOT NULL,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP
  );

  CREATE TABLE IF NOT EXISTS results (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_id INTEGER NOT NULL,
    team_id INTEGER NOT NULL,
    score TEXT NOT NULL,
    rank INTEGER,
    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
    FOREIGN KEY (event_id) REFERENCES events(id),
    FOREIGN KEY (team_id) REFERENCES teams(id)
  );

  CREATE TABLE IF NOT EXISTS team_scores (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    team_id INTEGER NOT NULL,
    total_score INTEGER DEFAULT 0,
    gold_count INTEGER DEFAULT 0,
    silver_count INTEGER DEFAULT 0,
    bronze_count INTEGER DEFAULT 0,
    FOREIGN KEY (team_id) REFERENCES teams(id)
  );
`)

export default db