package inbound

import (
	"context"
	"fmt"
	cmpp "github.com/bigwhite/gocmpp"
	"log"
	"strconv"
)

type protocolLogEvent struct {
	Protocol         string         `json:"protocol"`
	Direction        string         `json:"direction"`
	EventType        string         `json:"eventType"`
	Status           string         `json:"status"`
	TenantID         string         `json:"tenantId,omitempty"`
	ApplicationID    string         `json:"applicationId,omitempty"`
	Account          string         `json:"account,omitempty"`
	MessageID        string         `json:"messageId,omitempty"`
	GatewayMessageID string         `json:"gatewayMessageId,omitempty"`
	Phone            string         `json:"phone,omitempty"`
	ResultCode       string         `json:"resultCode,omitempty"`
	Detail           map[string]any `json:"detail,omitempty"`
}

func (s Server) submitResponseProtocolLogger(
	account string,
	protocol string,
	sequenceID uint32,
	phone string,
	messageID string,
	gatewayMessageID uint64,
	result uint32,
) func(error) {
	return func(sendErr error) {
		s.emitProtocolLog(protocolLogEvent{
			Protocol:         "cmpp",
			Direction:        "platform_to_client",
			EventType:        "submit_resp",
			Status:           protocolSendStatus(sendErr),
			Account:          account,
			MessageID:        messageID,
			GatewayMessageID: fmt.Sprint(gatewayMessageID),
			Phone:            phone,
			ResultCode:       protocolSendResultCode(sendErr, result),
			Detail:           protocolSubmitResponseDetail(sequenceID, sendErr),
		})
	}
}

func protocolSendStatus(sendErr error) string {
	if sendErr != nil {
		return "failed"
	}
	return "success"
}

func protocolSendResultCode(sendErr error, result uint32) string {
	if sendErr != nil {
		return "SEND_FAILED"
	}
	return fmt.Sprint(result)
}

func protocolSubmitResponseDetail(sequenceID uint32, sendErr error) map[string]any {
	detail := map[string]any{"sequenceId": sequenceID}
	if sendErr != nil {
		detail["error"] = sendErr.Error()
	}
	return detail
}

func (s Server) emitProtocolLog(event protocolLogEvent) {
	go func() {
		ctx, cancel := context.WithTimeout(context.Background(), defaultHTTPTimeout)
		defer cancel()
		if err := s.post(ctx, "/gateway/events/protocol-log", event, nil); err != nil {
			log.Printf("cmpp inbound protocol_event direction=%s event=%s status=telemetry_failed account=%s message_id=%s error=%q", event.Direction, event.EventType, event.Account, event.MessageID, err)
		}
	}()
}

func (session *downstreamSession) recordDownstreamProtocol(
	deliver cmpp.Packer,
	deliveryID string,
	sequenceID uint32,
	messageID uint64,
	status string,
	resultCode string,
	sendErr error,
) {
	if session == nil || session.protocolLog == nil {
		return
	}
	eventType, phone := downstreamDeliverMetadata(deliver)
	detail := map[string]any{"sequenceId": sequenceID, "deliveryId": deliveryID}
	if sendErr != nil {
		detail["error"] = sendErr.Error()
	}
	session.protocolLog(protocolLogEvent{
		Protocol:         "cmpp",
		Direction:        "platform_to_client",
		EventType:        eventType,
		Status:           status,
		TenantID:         session.tenantID,
		ApplicationID:    session.applicationID,
		Account:          session.account,
		MessageID:        session.messageID,
		GatewayMessageID: strconv.FormatUint(messageID, 10),
		Phone:            defaultString(phone, session.phoneNumber),
		ResultCode:       resultCode,
		Detail:           detail,
	})
}