'use strict';

const path = require('path');
const fs = require('fs');
const Database = require('better-sqlite3');
const bcrypt = require('bcryptjs');

const DB_PATH = process.env.DB_PATH || path.join(__dirname, 'bowler.db');
const SCHEMA_PATH = path.join(__dirname, 'schema.sql');

const db = new Database(DB_PATH);
db.pragma('journal_mode = WAL');
db.pragma('foreign_keys = ON');

// Apply schema (idempotent — all statements use IF NOT EXISTS).
db.exec(fs.readFileSync(SCHEMA_PATH, 'utf8'));

/**
 * First-run seed: if there are no users yet, create the admin from env vars
 * and a sensible default color scheme.
 */
function seed() {
  const userCount = db.prepare('SELECT COUNT(*) AS n FROM users').get().n;
  if (userCount > 0) return;

  const schemeCount = db.prepare('SELECT COUNT(*) AS n FROM color_schemes').get().n;
  let defaultSchemeId;
  if (schemeCount === 0) {
    const info = db
      .prepare(
        `INSERT INTO color_schemes (name, seed_color, mode, is_default)
         VALUES (@name, @seed_color, @mode, 1)`
      )
      .run({ name: 'Default', seed_color: '#1565c0', mode: 'light' });
    defaultSchemeId = info.lastInsertRowid;
    // A second scheme so the picker has something to toggle out of the box.
    db.prepare(
      `INSERT INTO color_schemes (name, seed_color, mode, is_default)
       VALUES (@name, @seed_color, @mode, 0)`
    ).run({ name: 'Midnight', seed_color: '#7e57c2', mode: 'dark' });
  } else {
    defaultSchemeId = db
      .prepare('SELECT id FROM color_schemes ORDER BY is_default DESC, id ASC LIMIT 1')
      .get().id;
  }

  const username = process.env.ADMIN_USERNAME || 'admin';
  const password = process.env.ADMIN_PASSWORD || 'change-me';
  const email = process.env.ADMIN_EMAIL || null;
  const hash = bcrypt.hashSync(password, 10);

  db.prepare(
    `INSERT INTO users (username, email, password_hash, role, preferred_scheme_id, active)
     VALUES (@username, @email, @hash, 'admin', @scheme, 1)`
  ).run({ username, email, hash, scheme: defaultSchemeId });

  console.log(`[seed] Created admin user "${username}" and default color schemes.`);
}

seed();

module.exports = db;