import { Global, Module } from '@nestjs/common'
import { ConfigModule } from '@nestjs/config'
import * as Joi from 'joi'

import { ConfigurationService } from 'src/common/configuration/configuration.service'

const NODE_ENV = process.env.NODE_ENV
const isProduction = NODE_ENV === 'production'
const envFilePath = ['.env']

if (isProduction) {
  envFilePath.unshift(`.env.${NODE_ENV || `production`}`)
} else {
  envFilePath.unshift(`.env.${NODE_ENV || `development`}`)
}

const validationSchema = Joi.object({
  APP_PORT: Joi.number().default(3000),
  NODE_ENV: Joi.string().valid('production', 'development', 'test').default('development'),
  APP_VERSION: Joi.string().default('1'),
  APP_PREFIX: Joi.string().default('/api'),
  DATABASE_HOST: Joi.string().default('localhost'),
  // DATABASE_HOST: Joi.string().ip().default('localhost'),
  DATABASE_PORT: Joi.number().valid(5432, 5431, 5430).default(5432),
  DATABASE_USER: Joi.string().required(),
  DATABASE_PASSWORD: Joi.string().required(),
  DATABASE_NAME: Joi.string().required(),
  DATABASE_SCHEMA: Joi.string(),
  JWT_SECRET: Joi.string().required()
})

@Global()
@Module({
  imports: [
    ConfigModule.forRoot({
      envFilePath,
      isGlobal: true,
      validationSchema
    })
  ],
  providers: [ConfigurationService],
  exports: [ConfigurationService]
})
export class ConfigurationModule {}