import type { MySql2Database } from 'drizzle-orm/mysql2'
import { drizzle } from 'drizzle-orm/mysql2'
import mysql from 'mysql2/promise'
import * as schema from '../db/schema'

let db: MySql2Database<typeof schema> | undefined

export function useDb() {
  if (!db) {
    const { databaseUrl } = useRuntimeConfig()
    if (!databaseUrl) {
      throw createError({ statusCode: 500, statusMessage: 'DATABASE_URL is not configured' })
    }
    db = drizzle(mysql.createPool(databaseUrl), { schema, mode: 'default' })
  }
  return db
}