package config

import (
	"os"

	"github.com/joho/godotenv"
	log "github.com/sirupsen/logrus"
)

type appConfig struct {
	SourceDbUrl  string
	SourceDbType string
	TargetDbUrl  string
	TargetDbType string
}

func loadEnv() {
	err := godotenv.Load()
	if err != nil {
		log.Warn("Warning: could not load .env file")
	}
}

func getAppConfig() appConfig {
	loadEnv()

	sourceDbUrl := os.Getenv("SOURCE_DB_URL")
	if sourceDbUrl == "" {
		log.Fatal("SOURCE_DB_URL environment variable not set")
	}

	sourceDbType := os.Getenv("SOURCE_DB_TYPE")
	if sourceDbType == "" {
		log.Fatal("SOURCE_DB_TYPE environment variable not set")
	}

	targetDbUrl := os.Getenv("TARGET_DB_URL")
	if targetDbUrl == "" {
		log.Fatal("TARGET_DB_URL environment variable not set")
	}

	targetDbType := os.Getenv("TARGET_DB_TYPE")
	if targetDbType == "" {
		log.Fatal("TARGET_DB_TYPE environment variable not set")
	}

	return appConfig{
		SourceDbUrl:  sourceDbUrl,
		SourceDbType: sourceDbType,
		TargetDbUrl:  targetDbUrl,
		TargetDbType: targetDbType,
	}
}

var App appConfig = getAppConfig()