package config

import (
	"os"
	"strconv"
	"time"
)

type Config struct {
	ListenAddr        string
	PublicBaseURL     string
	MySQLDSN          string
	RedisAddr         string
	RedisPassword     string
	RedisDB           int
	AutoMigrate       bool
	JavaAuthBaseURL   string
	JavaDeviceBaseURL string
	JavaAppBaseURL    string
	JavaBridgeBaseURL string
	JavaOtherBaseURL  string
	JavaWalletBaseURL string
	BaishunPlatformBaseURL string
	BaishunAppID           int64
	BaishunAppChannel      string
	BaishunAppKey          string
	BaishunGSP             int
	BaishunLaunchCodeTTLSeconds int
	BaishunSSTokenTTLSeconds    int
	InternalCallbackSecret      string
	Timeout           time.Duration
}

func Load() Config {
	return Config{
		ListenAddr:        getEnv("INVITE_HTTP_ADDR", ":2900"),
		PublicBaseURL:     getEnv("INVITE_PUBLIC_BASE_URL", "http://localhost:2900"),
		MySQLDSN:          getEnv("INVITE_MYSQL_DSN", "root:root@tcp(127.0.0.1:3306)/chatapp3?charset=utf8mb4&parseTime=True&loc=Local"),
		RedisAddr:         getEnv("INVITE_REDIS_ADDR", "127.0.0.1:6379"),
		RedisPassword:     getEnv("INVITE_REDIS_PASSWORD", ""),
		RedisDB:           getEnvInt("INVITE_REDIS_DB", 0),
		AutoMigrate:       getEnvBool("INVITE_AUTO_MIGRATE", false),
		JavaAuthBaseURL:   getEnv("INVITE_JAVA_AUTH_BASE_URL", "http://127.0.0.1:2100"),
		JavaDeviceBaseURL: getEnv("INVITE_JAVA_DEVICE_BASE_URL", "http://127.0.0.1:2400"),
		JavaAppBaseURL:    getEnv("INVITE_JAVA_APP_BASE_URL", "http://127.0.0.1:2400"),
		JavaBridgeBaseURL: getEnv("INVITE_JAVA_BRIDGE_BASE_URL", "http://127.0.0.1:2200"),
		JavaOtherBaseURL:  getEnv("GAME_JAVA_OTHER_BASE_URL", getEnv("INVITE_JAVA_APP_BASE_URL", "http://127.0.0.1:2400")),
		JavaWalletBaseURL: getEnv("GAME_JAVA_WALLET_BASE_URL", "http://127.0.0.1:2300"),
		BaishunPlatformBaseURL: getEnv("BAISHUN_PLATFORM_BASE_URL", ""),
		BaishunAppID: getEnvInt64("BAISHUN_APP_ID", 0),
		BaishunAppChannel: getEnv("BAISHUN_APP_CHANNEL", ""),
		BaishunAppKey: getEnv("BAISHUN_APP_KEY", ""),
		BaishunGSP: getEnvInt("BAISHUN_GSP", 101),
		BaishunLaunchCodeTTLSeconds: getEnvInt("BAISHUN_LAUNCH_CODE_TTL_SECONDS", 300),
		BaishunSSTokenTTLSeconds: getEnvInt("BAISHUN_SS_TOKEN_TTL_SECONDS", 86400),
		InternalCallbackSecret: getEnv("GAME_INTERNAL_CALLBACK_SECRET", ""),
		Timeout:           time.Duration(getEnvInt("INVITE_HTTP_TIMEOUT_SECONDS", 8)) * time.Second,
	}
}

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

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
}

func getEnvInt64(key string, fallback int64) int64 {
	value := os.Getenv(key)
	if value == "" {
		return fallback
	}
	parsed, err := strconv.ParseInt(value, 10, 64)
	if err != nil {
		return fallback
	}
	return parsed
}

func getEnvBool(key string, fallback bool) bool {
	value := os.Getenv(key)
	if value == "" {
		return fallback
	}
	parsed, err := strconv.ParseBool(value)
	if err != nil {
		return fallback
	}
	return parsed
}