// Package payment 提供代理在线充值使用的支付渠道薄适配器。
package payment

import (
	"context"
	"strconv"
	"time"

	"github.com/ArtisanCloud/PowerWeChat/v3/src/kernel"
	sdkpayment "github.com/ArtisanCloud/PowerWeChat/v3/src/payment"
	"go.uber.org/zap"

	agentrecharge "github.com/break/junhong_cmp_fiber/internal/application/agentrecharge"
	"github.com/break/junhong_cmp_fiber/internal/infrastructure/integrationlog"
	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
	apperrors "github.com/break/junhong_cmp_fiber/pkg/errors"
	wechatpay "github.com/break/junhong_cmp_fiber/pkg/wechat"
)

// WechatWebAdapter 按当前支付配置生成微信 H5/MWEB 支付链接并查单。
type WechatWebAdapter struct {
	cache       kernel.CacheInterface
	integration *integrationlog.Repository
	logger      *zap.Logger
}

// NewWechatWebAdapter 创建微信 H5/MWEB 支付适配器。
func NewWechatWebAdapter(cache kernel.CacheInterface, integration *integrationlog.Repository, logger *zap.Logger) *WechatWebAdapter {
	return &WechatWebAdapter{cache: cache, integration: integration, logger: logger}
}

// Available 判断当前协议配置是否完整支持 H5/MWEB 下单、验签与查单。
func (a *WechatWebAdapter) Available(config *model.WechatConfig) bool {
	return wechatConfigComplete(config, true) || wechatV2ConfigComplete(config, true)
}

// CreatePaymentURL 按当前协议生成微信 H5 或 MWEB 支付链接。
func (a *WechatWebAdapter) CreatePaymentURL(ctx context.Context, request agentrecharge.OnlinePaymentRequest) (agentrecharge.OnlinePaymentResult, error) {
	attempt, err := a.startAttempt(ctx, request, constants.IntegrationOperationPaymentPreCreate, request.Config.ID, request.Amount)
	if err != nil {
		return agentrecharge.OnlinePaymentResult{}, err
	}
	startedAt := time.Now()
	response, callErr := a.createH5Order(ctx, request, &wechatpay.H5SceneInfo{
		PayerClientIP: request.PayerClientIP,
		H5Type:        "Wap",
	})
	if callErr != nil {
		return agentrecharge.OnlinePaymentResult{}, a.completeUnknown(ctx, attempt.IntegrationID, startedAt, callErr)
	}
	if _, err = a.integration.Complete(ctx, attempt.IntegrationID, integrationlog.Completion{
		Result: constants.IntegrationResultSuccess, ResponseSummary: map[string]any{"success": true},
		DurationMS: time.Since(startedAt).Milliseconds(), StateChanged: true,
	}); err != nil {
		return agentrecharge.OnlinePaymentResult{}, err
	}
	return agentrecharge.OnlinePaymentResult{QRContent: response.H5URL}, nil
}

// Query 按创建支付单时的协议查询微信支付状态。
func (a *WechatWebAdapter) Query(ctx context.Context, request agentrecharge.OnlinePaymentRequest) (agentrecharge.OnlinePaymentQueryResult, error) {
	attempt, err := a.startAttempt(ctx, request, constants.IntegrationOperationPaymentQuery, request.Config.ID, 0)
	if err != nil {
		return agentrecharge.OnlinePaymentQueryResult{}, err
	}
	startedAt := time.Now()
	info, callErr := a.queryOrder(ctx, request.Config, request.PaymentNo)
	if callErr != nil {
		return agentrecharge.OnlinePaymentQueryResult{}, a.completeUnknown(ctx, attempt.IntegrationID, startedAt, callErr)
	}
	result := agentrecharge.OnlinePaymentQueryResult{
		State: mapWechatTradeState(info.TradeState), ThirdPartyTradeNo: info.TransactionID, Amount: info.TotalAmount,
	}
	if paidAt, ok := parseWechatPaidAt(info.SuccessTime); ok {
		result.PaidAt = &paidAt
	}
	if _, err = a.integration.Complete(ctx, attempt.IntegrationID, integrationlog.Completion{
		Result: constants.IntegrationResultSuccess, ProviderCode: info.TradeState,
		ResponseSummary: map[string]any{"state": result.State, "has_trade_no": result.ThirdPartyTradeNo != ""},
		DurationMS:      time.Since(startedAt).Milliseconds(),
	}); err != nil {
		return agentrecharge.OnlinePaymentQueryResult{}, err
	}
	return result, nil
}

func parseWechatPaidAt(value string) (time.Time, bool) {
	for _, layout := range []string{time.RFC3339, "20060102150405"} {
		paidAt, err := time.ParseInLocation(layout, value, time.Local)
		if err == nil {
			return paidAt, true
		}
	}
	return time.Time{}, false
}

func (a *WechatWebAdapter) paymentApp(config *model.WechatConfig) (*sdkpayment.Payment, error) {
	if !wechatConfigComplete(config, false) {
		return nil, apperrors.New(apperrors.CodeNoPaymentConfig, "微信 H5 支付配置不可用")
	}
	app, err := wechatpay.NewPaymentAppFromConfig(config, config.OaAppID, a.cache, a.logger)
	if err != nil {
		return nil, apperrors.Wrap(apperrors.CodeNoPaymentConfig, err, "微信 H5 支付配置不可用")
	}
	return app, nil
}

func (a *WechatWebAdapter) createH5Order(ctx context.Context, request agentrecharge.OnlinePaymentRequest, sceneInfo *wechatpay.H5SceneInfo) (*wechatpay.H5PayResult, error) {
	switch request.Config.ProviderType {
	case model.ProviderTypeWechat:
		app, err := a.paymentApp(request.Config)
		if err != nil {
			return nil, err
		}
		return wechatpay.NewPaymentService(app, a.logger).CreateH5Order(ctx, request.PaymentNo, request.Description, int(request.Amount), sceneInfo)
	case model.ProviderTypeWechatV2:
		service, err := wechatpay.NewPaymentV2ServiceFromConfig(request.Config, request.Config.OaAppID, a.logger)
		if err != nil {
			return nil, apperrors.Wrap(apperrors.CodeNoPaymentConfig, err, "微信 MWEB 支付配置不可用")
		}
		return service.CreateH5Order(ctx, request.PaymentNo, request.Description, int(request.Amount), sceneInfo)
	default:
		return nil, apperrors.New(apperrors.CodeNoPaymentConfig, "当前支付渠道不支持微信网页支付")
	}
}

func (a *WechatWebAdapter) queryOrder(ctx context.Context, config *model.WechatConfig, paymentNo string) (*wechatpay.OrderInfo, error) {
	switch config.ProviderType {
	case model.ProviderTypeWechat:
		app, err := a.queryPaymentApp(config)
		if err != nil {
			return nil, err
		}
		return wechatpay.NewPaymentService(app, a.logger).QueryOrder(ctx, paymentNo)
	case model.ProviderTypeWechatV2:
		service, err := wechatpay.NewPaymentV2ServiceFromConfig(config, config.OaAppID, a.logger)
		if err != nil {
			return nil, apperrors.Wrap(apperrors.CodeNoPaymentConfig, err, "微信 v2 查单配置不可用")
		}
		return service.QueryOrder(ctx, paymentNo)
	default:
		return nil, apperrors.New(apperrors.CodeNoPaymentConfig, "当前支付渠道不支持微信查单")
	}
}

func (a *WechatWebAdapter) queryPaymentApp(config *model.WechatConfig) (*sdkpayment.Payment, error) {
	if !wechatConfigComplete(config, false) {
		return nil, apperrors.New(apperrors.CodeNoPaymentConfig, "微信查单配置不可用")
	}
	app, err := wechatpay.NewPaymentAppFromConfig(config, config.OaAppID, a.cache, a.logger)
	if err != nil {
		return nil, apperrors.Wrap(apperrors.CodeNoPaymentConfig, err, "微信查单配置不可用")
	}
	return app, nil
}

func wechatConfigComplete(config *model.WechatConfig, requireActive bool) bool {
	return config != nil && (!requireActive || config.IsActive) && config.ProviderType == model.ProviderTypeWechat &&
		config.OaAppID != "" && config.WxMchID != "" && config.WxAPIV3Key != "" &&
		config.WxCertContent != "" && config.WxKeyContent != "" && config.WxSerialNo != "" && config.WxNotifyURL != ""
}

func wechatV2ConfigComplete(config *model.WechatConfig, requireActive bool) bool {
	return config != nil && (!requireActive || config.IsActive) && config.ProviderType == model.ProviderTypeWechatV2 &&
		config.OaAppID != "" && config.WxMchID != "" && config.WxAPIV2Key != "" && config.WxNotifyURL != ""
}

func (a *WechatWebAdapter) startAttempt(ctx context.Context, request agentrecharge.OnlinePaymentRequest, operation string, configID uint, amount int64) (*model.IntegrationLog, error) {
	resourceID, resourceKey := strconv.FormatUint(uint64(request.PaymentID), 10), request.PaymentNo
	series := "agent-recharge-payment:" + resourceID + ":" + operation
	correlationID := request.CorrelationID
	return a.integration.Start(ctx, integrationlog.Attempt{
		Provider: constants.IntegrationProviderWechatPay, Direction: constants.IntegrationDirectionOutbound,
		Operation: operation, ResourceType: constants.IntegrationResourceTypeAgentRechargePayment,
		ResourceID: &resourceID, ResourceKey: &resourceKey, ExternalID: &resourceKey,
		TriggerSeries: &series, CorrelationID: &correlationID,
		RequestSummary: map[string]any{"payment_config_id": configID, "amount": amount},
	})
}

func (a *WechatWebAdapter) completeUnknown(ctx context.Context, integrationID string, startedAt time.Time, cause error) error {
	if a.logger != nil {
		a.logger.Warn("微信支付请求结果未知", zap.String("integration_id", integrationID), zap.Error(cause))
	}
	_, err := a.integration.Complete(ctx, integrationID, integrationlog.Completion{
		Result: constants.IntegrationResultUnknown, ProviderCode: "request_unknown", ProviderMessage: "微信支付请求结果未知",
		ResponseSummary: map[string]any{"success": false}, DurationMS: time.Since(startedAt).Milliseconds(),
		RecoveryStrategy: "使用原支付单号主动查单，确认不存在或关闭后才允许关闭本地支付单",
	})
	if err != nil {
		return err
	}
	return apperrors.Wrap(apperrors.CodeTimeout, cause, "微信支付请求结果未知")
}

func mapWechatTradeState(state string) string {
	switch state {
	case "SUCCESS":
		return agentrecharge.OnlinePaymentStatePaid
	case "CLOSED", "REVOKED", "PAYERROR":
		return agentrecharge.OnlinePaymentStateClosed
	case "NOTPAY", "USERPAYING":
		return agentrecharge.OnlinePaymentStatePending
	default:
		return agentrecharge.OnlinePaymentStateUnknown
	}
}