package wallet

import (
	"context"
	"fmt"
	"strconv"

	notificationapp "github.com/break/junhong_cmp_fiber/internal/application/notification"
	walletapp "github.com/break/junhong_cmp_fiber/internal/application/wallet"
	"github.com/break/junhong_cmp_fiber/internal/infrastructure/messaging/outbox"
	"github.com/break/junhong_cmp_fiber/internal/model"
	"github.com/break/junhong_cmp_fiber/pkg/constants"
	"github.com/break/junhong_cmp_fiber/pkg/errors"
	"gorm.io/gorm"
)

// CreditEventWriter 将代理主钱包正向入账事实写入公共 Outbox。
type CreditEventWriter struct {
	outbox *outbox.Repository
}

// NewCreditEventWriter 创建代理主钱包入账 Outbox Writer。
func NewCreditEventWriter(repository *outbox.Repository) *CreditEventWriter {
	return &CreditEventWriter{outbox: repository}
}

// Append 在调用方业务事务中追加代理主钱包入账事件。
func (w *CreditEventWriter) Append(ctx context.Context, tx *gorm.DB, event walletapp.CreditedEvent) error {
	if w == nil || w.outbox == nil {
		return errors.New(errors.CodeInternalError, "代理主钱包入账 Outbox Writer 未配置")
	}
	_, err := w.outbox.Append(ctx, tx, outbox.Envelope{
		EventID: event.EventID, EventType: constants.OutboxEventTypeAgentMainWalletCredited,
		PayloadVersion: constants.AgentMainWalletCreditedPayloadVersionV1,
		AggregateType:  "agent_wallet", AggregateID: strconv.FormatUint(uint64(event.WalletID), 10),
		ResourceType: event.ReferenceType, ResourceID: strconv.FormatUint(uint64(event.ReferenceID), 10),
		BusinessKey: event.EventID, RequestID: event.RequestID, CorrelationID: event.CorrelationID, Payload: event,
	})
	if err != nil || event.ReferenceType != constants.ReferenceTypeTopup || event.TransactionType != constants.AgentTransactionTypeRecharge {
		return err
	}
	rechargeID := strconv.FormatUint(uint64(event.ReferenceID), 10)
	var shop model.Shop
	if err := tx.WithContext(ctx).Select("shop_name").Where("id = ?", event.ShopID).Take(&shop).Error; err != nil {
		return errors.Wrap(errors.CodeDatabaseError, err, "查询充值通知店铺失败")
	}
	notificationEventID := "agent-recharge:" + rechargeID + ":completed"
	_, err = w.outbox.AppendIdempotent(ctx, tx, outbox.Envelope{
		EventID: notificationEventID, EventType: constants.OutboxEventTypeAdminDynamicNotification,
		PayloadVersion: constants.NotificationPayloadVersionV1,
		AggregateType:  "agent_recharge", AggregateID: rechargeID,
		ResourceType: constants.NotificationRefTypeAgentRecharge, ResourceID: rechargeID,
		BusinessKey: notificationEventID, RequestID: event.RequestID, CorrelationID: event.CorrelationID,
		Payload: notificationapp.AdminDynamicPayload{
			TargetKind: constants.NotificationTargetKindShop, TargetID: event.ShopID,
			NotificationType: constants.NotificationTypeAgentRechargeCompleted,
			TemplateData: map[string]string{
				"shop_name": shop.ShopName,
				"amount":    fmt.Sprintf("%d.%02d 元", event.Amount/100, event.Amount%100),
			},
			RefType: constants.NotificationRefTypeAgentRecharge, RefID: rechargeID,
		},
	})
	return err
}