import { PrismaClient } from '@prisma/client'
import { PrismaLibSql } from '@prisma/adapter-libsql'
import { createClient } from '@libsql/client'

const globalForPrisma = globalThis as unknown as {
  prisma: PrismaClient | undefined
}

function getPrismaClient(): PrismaClient {
  if (!globalForPrisma.prisma) {
    const libsql = createClient({
      url: process.env.DATABASE_URL ?? 'file:./dev.db',
    })
    const adapter = new PrismaLibSql(libsql)
    globalForPrisma.prisma = new PrismaClient({
      adapter,
      log: process.env.NODE_ENV === 'development' ? ['query', 'error', 'warn'] : ['error'],
    })
  }
  return globalForPrisma.prisma
}

// Use a Proxy so `new PrismaClient()` is only called when a property
// is first accessed (inside a request handler), NOT at module import time.
export const prisma = new Proxy({} as PrismaClient, {
  get(_target, prop) {
    return Reflect.get(getPrismaClient(), prop)
  },
  apply(_target, thisArg, args) {
    return Reflect.apply(getPrismaClient() as unknown as Function, thisArg, args)
  },
})