af83/edwig

package core

import (
    "fmt"

    "bitbucket.org/enroute-mobi/ara/audit"
    "bitbucket.org/enroute-mobi/ara/siri/siri"
    "bitbucket.org/enroute-mobi/ara/siri/sxml"
)

type SituationExchangeRequestCollector interface {
    RequestSituationUpdate(kind, requestedId string)
}

type SIRISituationExchangeRequestCollectorFactory struct{}

type SIRISituationExchangeRequestCollector struct {
    connector

    updateSubscriber UpdateSubscriber
}

func NewSIRISituationExchangeRequestCollector(partner *Partner) *SIRISituationExchangeRequestCollector {
    siriSituationExchangeRequestCollector := &SIRISituationExchangeRequestCollector{}
    siriSituationExchangeRequestCollector.partner = partner
    manager := partner.Referential().CollectManager()
    siriSituationExchangeRequestCollector.updateSubscriber = manager.BroadcastUpdateEvent

    return siriSituationExchangeRequestCollector
}

func (connector *SIRISituationExchangeRequestCollector) RequestAllSituationsUpdate() {}

func (connector *SIRISituationExchangeRequestCollector) RequestSituationUpdate(kind, requestedId string) {
    message := connector.newBQEvent()
    defer audit.CurrentBigQuery(string(connector.Partner().Referential().Slug())).WriteEvent(message)

    startTime := connector.Clock().Now()

    siriSituationExchangeRequest := siri.NewSIRISituationExchangeRequest(
        connector.Partner().NewMessageIdentifier(),
        connector.Partner().RequestorRef(),
        connector.Clock().Now(),
    )

    // Check the request filter
    switch kind {
    case SITUATION_UPDATE_REQUEST_LINE:
        siriSituationExchangeRequest.LineRef = []string{requestedId}
    case SITUATION_UPDATE_REQUEST_STOP_AREA:
        siriSituationExchangeRequest.StopPointRef = []string{requestedId}
    }

    connector.logSIRISituationExchangeRequest(message, siriSituationExchangeRequest)

    xmlSituationExchangeResponse, err := connector.Partner().SIRIClient().SituationExchangeMonitoring(siriSituationExchangeRequest)
    message.ProcessingTime = connector.Clock().Since(startTime).Seconds()
    if err != nil {
        e := fmt.Sprintf("Error during GetSituationExchange: %v", err)
        message.Status = "Error"
        message.ErrorDetails = e
        return
    }

    logXMLSituationExchangeResponse(message, xmlSituationExchangeResponse)
    updateEvents := NewCollectUpdateEvents()

    builder := NewSituationExchangeUpdateEventBuilder(connector.partner)
    builder.SetSituationExchangeUpdateEvents(updateEvents, xmlSituationExchangeResponse)

    // Log models
    message.Lines = GetModelReferenceSlice(builder.LineRefs)
    message.StopAreas = GetModelReferenceSlice(builder.MonitoringRefs)

    connector.broadcastSituationUpdateEvent(updateEvents)
}

func (connector *SIRISituationExchangeRequestCollector) SetUpdateSubscriber(updateSubscriber UpdateSubscriber) {
    connector.updateSubscriber = updateSubscriber
}

func (connector *SIRISituationExchangeRequestCollector) broadcastSituationUpdateEvent(events *CollectUpdateEvents) {
    if connector.updateSubscriber == nil {
        return

    }
    for _, e := range events.Situations {
        connector.updateSubscriber(e)
    }
}

func (connector *SIRISituationExchangeRequestCollector) newBQEvent() *audit.BigQueryMessage {
    return &audit.BigQueryMessage{
        Type:      audit.SITUATION_EXCHANGE_REQUEST,
        Protocol:  "siri",
        Direction: "sent",
        Partner:   string(connector.partner.Slug()),
        Status:    "OK",
    }
}

func (factory *SIRISituationExchangeRequestCollectorFactory) Validate(apiPartner *APIPartner) {
    apiPartner.ValidatePresenceOfRemoteCodeSpace()
    apiPartner.ValidatePresenceOfRemoteCredentials()
}

func (factory *SIRISituationExchangeRequestCollectorFactory) CreateConnector(partner *Partner) Connector {
    return NewSIRISituationExchangeRequestCollector(partner)
}

func (connector *SIRISituationExchangeRequestCollector) logSIRISituationExchangeRequest(message *audit.BigQueryMessage, request *siri.SIRIGetSituationExchangeRequest) {
    xml, err := request.BuildXML(connector.Partner().SIRIEnvelopeType())
    if err != nil {
        return
    }

    message.RequestIdentifier = request.MessageIdentifier
    message.RequestRawMessage = xml
    message.RequestSize = int64(len(xml))
}

func logXMLSituationExchangeResponse(message *audit.BigQueryMessage, response *sxml.XMLSituationExchangeResponse) {
    message.ResponseIdentifier = response.ResponseMessageIdentifier()

    if !response.Status() {
        message.Status = "Error"
        message.ErrorDetails = response.ErrorString()
    }
    message.ResponseRawMessage = response.RawXML()
    message.ResponseSize = int64(len(message.ResponseRawMessage))
}