package config

import (
	"os"
	"strconv"
)

type Config struct {
	Port      string
	JWTSecret string
	DBPath    string
	Mode      string // debug / release
	// OpenAPIKey 皮肤源头开放接口标识（Header: X-Api-Key，可公开给对接方）
	OpenAPIKey string
	// OpenAPISecret 签名密钥（仅用于 HMAC，不走 Header）
	OpenAPISecret string
	// OpenSignSkew 签名时间戳允许偏差（秒）
	OpenSignSkew int64
}

func Load() *Config {
	return &Config{
		Port:          getEnv("PORT", "8080"),
		JWTSecret:     getEnv("JWT_SECRET", "affiliate-dash-dev-secret-change-me"),
		DBPath:        getEnv("DB_PATH", "data/app.db"),
		Mode:          getEnv("GIN_MODE", "debug"),
		OpenAPIKey:    getEnv("OPEN_API_KEY", "sk_source_dev_key_change_me"),
		OpenAPISecret: getEnv("OPEN_API_SECRET", "sk_source_dev_secret_change_me"),
		OpenSignSkew:  int64(getEnvInt("OPEN_SIGN_SKEW", 300)),
	}
}

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

func getEnvInt(key string, def int) int {
	if v := os.Getenv(key); v != "" {
		if n, err := strconv.Atoi(v); err == nil {
			return n
		}
	}
	return def
}