package config

import (
	"os"
	"strconv"
)

type Config struct {
	HTTPHost       string
	HTTPPort       int
	DatabaseURL    string
	MigrateOnStart bool
}

func Load() Config {
	return Config{
		HTTPHost:       envString("HTTP_HOST", "0.0.0.0"),
		HTTPPort:       envInt("HTTP_PORT", 8080),
		DatabaseURL:    envString("DATABASE_URL", ""),
		MigrateOnStart: envBool("MIGRATE_ON_START", true),
	}
}

func envString(key, fallback string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return fallback
}

func envInt(key string, fallback int) int {
	raw := os.Getenv(key)
	if raw == "" {
		return fallback
	}
	v, err := strconv.Atoi(raw)
	if err != nil {
		return fallback
	}
	return v
}

func envBool(key string, fallback bool) bool {
	raw := os.Getenv(key)
	if raw == "" {
		return fallback
	}
	v, err := strconv.ParseBool(raw)
	if err != nil {
		return fallback
	}
	return v
}