package config

import (
	"os"
	"strconv"
)

type Config struct {
	AppEnv        string
	AppAddr       string
	MySQLDSN      string
	RedisAddr     string
	RedisPassword string
	RedisDB       int
	JWTSecret     string
	Storage       StorageConfig
}

type StorageConfig struct {
	Endpoint string
	Bucket   string
}

func Load() Config {
	return Config{
		AppEnv:        getEnv("APP_ENV", "development"),
		AppAddr:       getEnv("APP_ADDR", ":8080"),
		MySQLDSN:      getEnv("MYSQL_DSN", "hfb:secret@tcp(127.0.0.1:3306)/hfb_sys?charset=utf8mb4&parseTime=True&loc=Local"),
		RedisAddr:     getEnv("REDIS_ADDR", "127.0.0.1:6379"),
		RedisPassword: getEnv("REDIS_PASSWORD", ""),
		RedisDB:       getEnvInt("REDIS_DB", 0),
		JWTSecret:     getEnv("JWT_SECRET", "change-me"),
		Storage: StorageConfig{
			Endpoint: getEnv("STORAGE_ENDPOINT", "http://127.0.0.1:9000"),
			Bucket:   getEnv("STORAGE_BUCKET", "hfb-sys"),
		},
	}
}

func getEnv(key, fallback string) string {
	value := os.Getenv(key)
	if value == "" {
		return fallback
	}
	return value
}

func getEnvInt(key string, fallback int) int {
	value := os.Getenv(key)
	if value == "" {
		return fallback
	}
	parsed, err := strconv.Atoi(value)
	if err != nil {
		return fallback
	}
	return parsed
}