package app

import (
	"fmt"
	"os"
	"path"

	"github.com/joho/godotenv"
)

const App_Name = "catapult"

type App struct {
	ApiUrl            string
	AuthUrl           string
	ServiceUsername   string
	ServicePassphrase string
}

func Load() (*App, error) {
	err := godotenv.Load()
	if err != nil {
		cwd, _ := os.Getwd()
		envPath := path.Join(cwd, "../..", ".env")
		if err = godotenv.Load(envPath); err != nil {
			prevPath := path.Join(envPath, "../..", ".env")
			if err = godotenv.Load(prevPath); err != nil {
				return nil, fmt.Errorf("Error loading .env file: %w", err)
			}
		}
	}

	apiUrl := os.Getenv("API_URL")
	authUrl := os.Getenv("AUTH_URL")
	serviceUsername := os.Getenv("SERVICE_USERNAME")
	servicePassphrase := os.Getenv("SERVICE_PASSPHRASE")

	if len(apiUrl) == 0 {
		return nil, fmt.Errorf("Api Url not provided")
	} else if len(authUrl) == 0 {
		return nil, fmt.Errorf("Auth url not provided")
	} else if len(serviceUsername) == 0 {
		return nil, fmt.Errorf("Service username not provided")
	} else if len(servicePassphrase) == 0 {
		return nil, fmt.Errorf("Service passphrase not provided")
	} else {
		return &App{
			ApiUrl: apiUrl, AuthUrl: authUrl, ServiceUsername: serviceUsername, ServicePassphrase: servicePassphrase,
		}, nil
	}
}