require('dotenv').config();

const bcrypt = require('bcryptjs');

const { closeDbPool, getDb } = require('../config/db');
const { logger } = require('../utils/logger');

function requireEnv(name) {
  const value = process.env[name];

  if (!value) {
    throw new Error(`${name} is required`);
  }

  return value;
}

async function main() {
  const username = requireEnv('ADMIN_USERNAME');
  const email = requireEnv('ADMIN_EMAIL').toLowerCase();
  const password = requireEnv('ADMIN_PASSWORD');

  if (password.length < 8) {
    throw new Error('ADMIN_PASSWORD must be at least 8 characters');
  }

  const db = getDb();
  const existing = await db('users').where({ email }).orWhere({ username }).first();
  const passwordHash = await bcrypt.hash(password, 12);

  if (existing) {
    await db('users').where({ id: existing.id }).update({
      username,
      email,
      password_hash: passwordHash,
      role: 'admin',
      status: 'active'
    });
    logger.info({ id: existing.id, email }, 'Admin user updated');
    return;
  }

  const [id] = await db('users').insert({
    username,
    email,
    password_hash: passwordHash,
    balance: '0.0000',
    role: 'admin',
    status: 'active'
  });

  logger.info({ id, email }, 'Admin user created');
}

main()
  .catch((error) => {
    logger.error({
      message: error.message,
      stack: error.stack
    }, 'Failed to create admin user');
    process.exitCode = 1;
  })
  .finally(() => closeDbPool());