package main

import (
	"github.com/joho/godotenv"
	"log"
	"os"
	"reflect"
)

type config struct {
	DbPath        string `env:"DB_PATH"`
	AdminUsername string `env:"ADMIN_USERNAME" required:"true"`
	AdminPassword string `env:"ADMIN_PASSWORD" required:"true"`
	Host          string `env:"HOST"`
	Port          string `env:"PORT"`
	WebhookDomain string `env:"WEBHOOK_DOMAIN" required:"true"`
	RepoURL       string `env:"REPO_URL"`
	DemoBotURL    string `env:"DEMO_BOT_URL"`
	PrivacyURL    string `env:"PRIVACY_URL"`
	TermsURL      string `env:"TERMS_URL"`
}

func getConfig() config {

	err := godotenv.Load()
	if err != nil {
		log.Println("Couldn't load from dotenv:", err.Error())
	}
	conf := config{
		DbPath:     "db.sqlite",
		Host:       "0.0.0.0",
		Port:       "8080",
		RepoURL:    "https://git.massivebox.net/massivebox/deletedbot",
		DemoBotURL: "https://t.me/DeletedBotDemoBot",
		PrivacyURL: "privacy",
		TermsURL:   "terms",
	}

	v := reflect.ValueOf(&conf).Elem()
	t := v.Type()

	for i := 0; i < v.NumField(); i++ {

		field := v.Field(i)
		fieldType := t.Field(i)
		envTag := fieldType.Tag.Get("env")
		requiredTag := fieldType.Tag.Get("required")

		if envTag != "" {
			envValue := os.Getenv(envTag)
			if envValue != "" {
				field.SetString(envValue)
			}
		}

		if requiredTag == "true" && field.String() == "" {
			log.Panicf("Required environment variable %s is not set", envTag)
		}

	}

	return conf

}