package payment

import (
	"context"
	"strings"
	"time"
)

const (
	PaymentEventOrderCreated        = "order_created"
	PaymentEventProviderCreated     = "provider_created"
	PaymentEventPaymentSynchronized = "payment_synchronized"
	PaymentEventPaymentCallback     = "payment_callback"
	PaymentEventFulfillmentStarted  = "fulfillment_started"
	PaymentEventFulfillmentFinished = "fulfillment_finished"
	PaymentEventRefundStarted       = "refund_started"
	PaymentEventRefundSubmitted     = "refund_submitted"
	PaymentEventRefundConfirmed     = "refund_confirmed"
)

// PaymentOperation describes who or what initiated a payment state change.
// It is carried in context so repo method signatures remain focused on domain
// state while event persistence can still retain transport-level attribution.
type PaymentOperation struct {
	Source       string
	Reason       string
	OperatorID   uint
	OperatorName string
	ClientIP     string
	UserAgent    string
	DeviceID     string
}

type paymentOperationContextKey struct{}

func WithPaymentOperation(ctx context.Context, operation PaymentOperation) context.Context {
	if ctx == nil {
		ctx = context.Background()
	}
	return context.WithValue(ctx, paymentOperationContextKey{}, operation)
}

func PaymentOperationFromContext(ctx context.Context) PaymentOperation {
	if ctx == nil {
		return PaymentOperation{}
	}
	operation, _ := ctx.Value(paymentOperationContextKey{}).(PaymentOperation)
	operation.Source = strings.TrimSpace(operation.Source)
	operation.Reason = strings.TrimSpace(operation.Reason)
	operation.OperatorName = strings.TrimSpace(operation.OperatorName)
	operation.ClientIP = strings.TrimSpace(operation.ClientIP)
	operation.UserAgent = strings.TrimSpace(operation.UserAgent)
	operation.DeviceID = strings.TrimSpace(operation.DeviceID)
	return operation
}

type PaymentEvent struct {
	ID             uint64
	Provider       string
	TradeNo        string
	Type           string
	Source         string
	Status         string
	ProviderStatus string
	Message        string
	EventID        string
	PayloadHash    string
	Amount         int64
	Currency       string
	OperatorID     uint
	OperatorName   string
	ClientIP       string
	UserAgent      string
	DeviceID       string
	CreatedAt      time.Time
}

type PaymentCurrencySummary struct {
	Currency         string
	OrderAmount      int64
	PaidAmount       int64
	RefundedAmount   int64
	SettlementAmount int64
	NetAmount        int64
}

type PaymentOrderSummary struct {
	OrderCount    int64
	PendingCount  int64
	PaidCount     int64
	RefundedCount int64
	IssueCount    int64
	Currencies    []PaymentCurrencySummary
}