// Package config 使用仓库统一的 BSM 配置加载与校验方式。
package config

import (
	"net"
	"net/url"
	"strings"

	"git.apinb.com/bsm-sdk/core/conf"
)

// Spec 是 Platform API 的运行配置。
var Spec SrvConfig

// GlobalConfig 保存多个管理端共用的运行参数。
type GlobalConfig struct {
	UserRegisterURL                 string  `yaml:"UserRegisterURL"`
	ManualRechargeMaxAmount         int64   `yaml:"ManualRechargeMaxAmount"`
	MockVerificationEnabled         bool    `yaml:"MockVerificationEnabled"`
	MockVerificationCode            string  `yaml:"MockVerificationCode"`
	VerificationTTLSeconds          int     `yaml:"VerificationTTLSeconds"`
	VerificationSendIntervalSeconds int     `yaml:"VerificationSendIntervalSeconds"`
	MockPaymentEnabled              bool    `yaml:"MockPaymentEnabled"`
	DeliveryArrivalRadiusMeters     float64 `yaml:"DeliveryArrivalRadiusMeters"`
	UploadVideoMaxSize              int64   `yaml:"UploadVideoMaxSize"`
	FieldEncryptionKey              string  `yaml:"FieldEncryptionKey"`
}

// WalletConfig 是平台既有钱包逻辑的内部兼容视图，值由 Global 注入。
type WalletConfig struct {
	ManualRechargeMaxAmount int64 `yaml:"-"`
}

// AlipayConfig 保存支付宝证书模式商户配置。私钥和证书只允许服务端读取。
type AlipayConfig struct {
	Enabled              bool   `yaml:"Enabled"`
	Production           bool   `yaml:"Production"`
	AppID                string `yaml:"AppID"`
	PrivateKeyPath       string `yaml:"PrivateKeyPath"`
	AppPublicCertPath    string `yaml:"AppPublicCertPath"`
	AlipayPublicCertPath string `yaml:"AlipayPublicCertPath"`
	AlipayRootCertPath   string `yaml:"AlipayRootCertPath"`
	NotifyURL            string `yaml:"NotifyURL"`
	ReturnURL            string `yaml:"ReturnURL"`
}

// WechatPayConfig 保存微信支付 API v3 平台单商户配置。
type WechatPayConfig struct {
	Enabled                   bool   `yaml:"Enabled"`
	MerchantID                string `yaml:"MerchantID"`
	MerchantCertificateSerial string `yaml:"MerchantCertificateSerial"`
	MerchantPrivateKeyPath    string `yaml:"MerchantPrivateKeyPath"`
	APIv3Key                  string `yaml:"APIv3Key"`
	AppAppID                  string `yaml:"AppAppID"`
	OfficialAccountAppID      string `yaml:"OfficialAccountAppID"`
	MiniProgramAppID          string `yaml:"MiniProgramAppID"`
	NotifyURL                 string `yaml:"NotifyURL"`
}

// PaymentConfig 保存统一支付、退款和 Worker 内部调用参数。
type PaymentConfig struct {
	ExpireMinutes        int             `yaml:"ExpireMinutes"`
	RefundWindowDays     int             `yaml:"RefundWindowDays"`
	InternalServiceToken string          `yaml:"InternalServiceToken"`
	Alipay               AlipayConfig    `yaml:"Alipay"`
	Wechat               WechatPayConfig `yaml:"Wechat"`
}

// IoTConfig 保存 API 与 IoT 链路间的内部认证配置。
type IoTConfig struct {
	InternalServiceToken string `yaml:"InternalServiceToken"`
}

// SrvConfig 与仓库现有进程的配置结构保持一致。
type SrvConfig struct {
	conf.Base `yaml:",inline"`
	Databases *conf.DBConf            `yaml:"Databases"`
	Rpc       map[string]conf.RpcConf `yaml:"Rpc"`
	Apm       *conf.ApmConf           `yaml:"APM"`
	Global    GlobalConfig            `yaml:"Global"`
	Wallet    WalletConfig            `yaml:"-"`
	Payment   PaymentConfig           `yaml:"Payment"`
	IoT       IoTConfig               `yaml:"IoT"`
}

// New 初始化 BSM 配置并校验服务监听地址。
func New(srvKey string) {
	conf.New(srvKey, &Spec)
	Spec.Port = conf.CheckPort(Spec.Port)
	Spec.BindIP = conf.CheckIP(Spec.BindIP)
	Spec.Addr = net.JoinHostPort(Spec.BindIP, Spec.Port)
	conf.NotNil(Spec.Service, Spec.Cache)
	if Spec.Databases == nil || len(Spec.Databases.Source) == 0 {
		panic("Databases configuration is required")
	}
	if Spec.Global.ManualRechargeMaxAmount <= 0 {
		panic("Global.ManualRechargeMaxAmount must be greater than zero")
	}
	if Spec.Global.VerificationTTLSeconds <= 0 || Spec.Global.VerificationSendIntervalSeconds <= 0 {
		panic("Global verification timeouts must be greater than zero")
	}
	if Spec.Global.MockVerificationEnabled && len(Spec.Global.MockVerificationCode) < 4 {
		panic("Global.MockVerificationCode must contain at least four characters")
	}
	if Spec.Global.DeliveryArrivalRadiusMeters <= 0 || Spec.Global.UploadVideoMaxSize <= 0 {
		panic("Global delivery radius and upload video size must be greater than zero")
	}
	if len(strings.TrimSpace(Spec.Global.FieldEncryptionKey)) < 32 {
		panic("Global.FieldEncryptionKey must contain at least 32 characters")
	}
	Spec.Wallet.ManualRechargeMaxAmount = Spec.Global.ManualRechargeMaxAmount
	if Spec.Payment.ExpireMinutes <= 0 || Spec.Payment.RefundWindowDays <= 0 {
		panic("Payment expiration and refund window must be greater than zero")
	}
	if len(strings.TrimSpace(Spec.IoT.InternalServiceToken)) < 16 {
		panic("IoT internal token is required")
	}
	registerURL, err := url.ParseRequestURI(Spec.Global.UserRegisterURL)
	if err != nil || (registerURL.Scheme != "http" && registerURL.Scheme != "https") || registerURL.Host == "" {
		panic("Global.UserRegisterURL must be a valid HTTP or HTTPS URL")
	}
	conf.PrintInfo(Spec.Addr)
}