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controller.js
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controller.js
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import appConfig from "./config.js"
import msgController from "./messaging.js"
import Vehicle from "./vehicle.js"
import geo from "./geo.js"
import { colorTopic, buildSubscriptionTopic } from "./misc.js"
const GEO_FILTERING_REQUEST_TOPIC = "geo/filtering"
let topicTag;
let msgRateTag;
let totalVehiclesTag;
let curtSubsTag;
let subTopicTag;
let coverAccuracyTag;
let zoomLevel;
const filterFields = {
route: "*",
vehType: "*",
vehID: "*",
status: "*",
}
let geoShapes = []
const SUB_MODE_WILDCARD = "wildcard"
const SUB_MODE_GEO = "geo"
let prevSubMode = SUB_MODE_WILDCARD
let prevSubTopic = null
let prevFilteringResult = null
// vehicleController
const vc = {
map: null,
initMap: function () {
vc.map = new google.maps.Map(document.getElementById("map"), appConfig.mapOptions);
google.maps.event.addListener(vc.map, 'zoom_changed', function () {
vc.onZoomChanged(vc.map.getZoom())
});
vc.init()
vc.start()
geo.init(vc.map, vc.onShapesChanged)
},
init: function () {
topicTag = document.getElementById("topic")
msgRateTag = document.getElementById("msg_rate")
totalVehiclesTag = document.getElementById("total_vehicles")
curtSubsTag = document.getElementById("curt_subs")
subTopicTag = document.getElementById("sub-topic")
coverAccuracyTag = document.getElementById("cover_accuracy")
document.getElementById("topic-status-Any").value = appConfig.singleLevelWildCard
zoomLevel = appConfig.mapOptions.zoom
// add event listener of filtering tags
Object.keys(filterFields).forEach((eid) => {
const inputTag = document.getElementById(eid)
inputTag.addEventListener('change', () => { vc.onFilterFieldsChanged() })
})
document.getElementById("sub-form").addEventListener('change', () => {
if (geoShapes.length !== 0) {
vc.updateSubscription()
}
})
},
start: function () {
msgController.connect(vc.onMessagingConnected, vc.onMessage)
setInterval(() => { vc.updateRealTimeTopics() }, 1000)
setInterval(() => { vc.checkInactiveVehicles() }, 500)
},
vehicles: {},
msgAmount: 0,
onMessage: function (vehMsg) {
vc.msgAmount++
vc.updateTopic(vehMsg.topic)
if (vc.map == null) return;
let veh = null
if (!(vehMsg.payload.vehID in vc.vehicles)) {
veh = new Vehicle(vehMsg, vc.map)
veh.onZoomChanged(zoomLevel)
vc.vehicles[vehMsg.payload.vehID] = veh
} else {
veh = vc.vehicles[vehMsg.payload.vehID]
}
veh.onMessage(vehMsg)
},
updateTopic: function (topic) {
topicTag.innerHTML = colorTopic(topic)
},
onZoomChanged: function (_zoomLevel) {
zoomLevel = _zoomLevel;
log.debug(`zoom=${_zoomLevel}`)
for (const [k, v] of Object.entries(vc.vehicles)) {
v.onZoomChanged(_zoomLevel)
}
},
updateRealTimeTopics: function () {
vc.updateMsgRate()
vc.updateTotalVehicles()
},
lastMsgAmount: 0,
lastTs: Date.now(),
updateMsgRate: function () {
let nowTs = Date.now()
let secs = (nowTs - vc.lastTs) / 1000
let rate = Math.round((vc.msgAmount - vc.lastMsgAmount) / secs)
msgRateTag.innerText = `${rate}`
vc.lastMsgAmount = vc.msgAmount
vc.lastTs = nowTs
},
updateTotalVehicles: function () {
totalVehiclesTag.innerText = Object.keys(vc.vehicles).length.toString()
},
checkInactiveVehicles: function () {
const nowTs = Date.now()
for (const [k, v] of Object.entries(vc.vehicles)) {
v.checkActivity(nowTs)
if (null == v.marker.map) {
delete vc.vehicles[k]
}
}
},
onFilterFieldsChanged: function () {
Object.keys(filterFields).forEach((eid) => {
const inputTag = document.getElementById(eid)
if (null === inputTag) {
filterFields[eid] = appConfig.singleLevelWildCard
return
}
const value = inputTag.value.trim()
if (value.length === 0) {
filterFields[eid] = appConfig.singleLevelWildCard
} else {
filterFields[eid] = value
}
})
vc.updateSubscription()
},
updateSubscription() {
// un-subscribe prev wildcard topic first
if (prevSubTopic !== null) {
msgController.unSubscribe(prevSubTopic)
prevSubTopic = null
}
let curtSubMode = SUB_MODE_WILDCARD
if (geoShapes.length === 0) {
filterFields["lat"] = "*"
filterFields["lng"] = "*"
} else {
curtSubMode = SUB_MODE_GEO
filterFields["lat"] = "{lat}"
filterFields["lng"] = "{lng}"
}
const subTopic = buildSubscriptionTopic(filterFields)
subTopicTag.innerHTML = colorTopic(subTopic)
if (curtSubMode === SUB_MODE_WILDCARD) {
msgController.subscribeTo(subTopic)
prevSubTopic = subTopic
curtSubsTag.innerText = "1"
}
if (prevSubMode === SUB_MODE_GEO || curtSubMode === SUB_MODE_GEO) {
// prevSubMode === SUB_MODE_GEO -> need to un-subscribe previous ranges
let request = {
clientName: msgController.clientName,
maxRangeCount: parseInt(document.getElementById("sub_max_range").value.trim()),
minAccuracy: parseInt(document.getElementById("sub_accuracy").value.trim()),
singleLevelWildCard: appConfig.singleLevelWildCard,
topicPattern: subTopic,
prevResult: prevFilteringResult,
shapes: geoShapes,
}
msgController.sendRequest(GEO_FILTERING_REQUEST_TOPIC,
JSON.stringify(request), vc.onGeoFilteringResult)
prevFilteringResult = null
}
prevSubMode = curtSubMode
},
onMessagingConnected: function () {
vc.updateSubscription()
},
onShapesChanged(_shapes) {
geoShapes = _shapes
vc.updateSubscription()
},
onGeoFilteringResult(payload) {
let reply = JSON.parse(payload)
if (reply.ranges.length > 0) {
prevFilteringResult = reply
curtSubsTag.innerText = reply.ranges.length
coverAccuracyTag.innerText = (reply.accuracy * 100).toFixed(2)
geo.updateRangeRectangles(reply)
} else {
coverAccuracyTag.innerText = "0"
}
},
}
export { vc as vehicleController }