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/* global L */
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/* global $ */
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var mymap
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var heatmapLayer = null
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var marksLayer = null
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var startX = 49.7248
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var startY = 13.3521
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var startZoom = 17
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var dataSourceRoute
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var currentTime
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var timer
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var isAnimationRunning = false
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var data = []
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var info = []
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let currentInfo = 0
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const datasetDictNameDisplayName = {}
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var datasetSelected = []
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const globalMarkersHolder = {}
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// all marker from which popup was removed
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// contains: {key:[L.circle,L.pupup]}
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// key: x and y, x + '' + y string
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let globalMarkersChanged = {}
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const fetchByNameDate = async (baseRoute, name, date, currentTime) => {
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const headers = new Headers()
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const myRequest = new Request(baseRoute + '/' + name + '/' + date + '/' + currentTime, {
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method: 'GET',
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headers: headers
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})
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const beforeJson = await fetch(myRequest)
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return beforeJson.json()
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}
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const fetchDataSourceMarks = async (positionRoute, datasetName) => {
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const headers = new Headers()
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const myRequest = new Request(positionRoute + '/' + datasetName, {
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method: 'GET',
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headers: headers
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})
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const beforeJson = await fetch(myRequest)
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return beforeJson.json()
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}
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const genPopUpControlButtons = (currentPage, numPages, onNextClick, onPreviousClick) => ({
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previousButton: '<button id="previous-info-btn" class="circle-button" onclick="previousInfo()"></button>',
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nextButton: '<button id="next-info-btn" onclick="nextInfo()" class="circle-button next"></button>',
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posInfo: `<div id="count-info">${currentPage} z ${numPages}</div>`
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})
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const genPopUpControls = (controls) => {
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return `<div class="popup-controls">${controls ? controls.reduce((sum, item) => sum + item, '') : ''}</div>`
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}
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const genMultipleDatasetsPopUp = (sum, currentPos, maxPos, datasetName) => {
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const header = `<strong id="dataset-info">${datasetName}</strong>`
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const digitInfo = `<div id="number-info"><span id="digit-info">${sum}</span></div>`
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const { previousButton, nextButton, posInfo } = genPopUpControlButtons(currentPos, maxPos)
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return `
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${header}
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${digitInfo}
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${genPopUpControls([previousButton, posInfo, nextButton])}
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`
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}
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const prepareLayerPopUp = (lat, lng, num, className) => L.popup({
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autoPan: false,
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className: className
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}).setLatLng([lat / num, lng / num])
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const genPopUp = (datasetName, place, number, sum, currentPos, maxPos) => {
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const header = `<strong>${datasetName}</strong><div id="place-info">${place}</div>`
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const currentNum = `<span id="digit-info">${number}</span>`
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// eslint-disable-next-line eqeqeq
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const sumNum = `<span id="total-info" style="font-size: large">${(sum && (sum != number)) ? '/' + sum : ''}</span>`
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const digitInfo = `<div id="number-info">${currentNum}${sumNum}</div>`
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const { previousButton, nextButton, posInfo } = genPopUpControlButtons(currentPos, maxPos)
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return `
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${header}
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${digitInfo}
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${genPopUpControls(maxPos > 1 ? [previousButton, posInfo, nextButton] : null)}
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`
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}
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/**
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* Initialize leaflet map on start position which can be default or set based on user action
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*/
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// eslint-disable-next-line no-unused-vars
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function initMap () {
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startX = localStorage.getItem('lat') || startX
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startY = localStorage.getItem('lng') || startY
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startZoom = localStorage.getItem('zoom') || startZoom
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mymap = L.map('heatmap').setView([startX, startY], startZoom)
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L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
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attribution: '',
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maxZoom: 19
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}).addTo(mymap)
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mymap.on('click', showInfo)
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}
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const getInfoLength = () => {
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const infoKeys = Object.keys(info)
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if (infoKeys.length === 1) {
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// return number of records in one dataset (one dataset in area)
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return info[infoKeys[0]].items.length
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}
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// return number of datasets (agregation of all datasets in area)
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return infoKeys.length
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}
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const getElFromObjectInfo = (position) => {
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const keys = Object.keys(info)
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return info[keys[position]]
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}
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const hasInfoMultipleDatasets = () => {
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return Object.keys(info).length > 1
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}
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function showInfo (e) {
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info = []
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currentInfo = 0
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// https://wiki.openstreetmap.org/wiki/Zoom_levels
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// Todo change to variable - it is used in heatmap init
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const stile = 40075016.686 * Math.cos(startX) / Math.pow(2, mymap.getZoom())
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const radius = 25 * stile / 256
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let i = 0
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let lat = 0
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let lng = 0
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let total = 0
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const datasetsInRadius = {}
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Object.keys(data[currentTime]).forEach((key) => {
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const namedData = data[currentTime][key]
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namedData.items.forEach(element => {
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if (e.latlng.distanceTo(new L.LatLng(element.x, element.y)) < radius) {
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lat += element.x
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lng += element.y
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info[i] = { place: element.place, number: element.number, datasetName: key }
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total += parseInt(element.number)
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i++
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datasetsInRadius[key] = true
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}
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})
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})
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// Process info for more then one dataset
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info = info.reduce((acc, item) => {
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if (!acc[item.datasetName]) {
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acc[item.datasetName] = {
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items: [],
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number: 0,
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datasetName: item.datasetName
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}
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}
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acc[item.datasetName].items.push(item)
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acc[item.datasetName].number += Number(item.number)
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return acc
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}, {})
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// There is one dataset
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const numDatasets = Object.keys(datasetsInRadius).length
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if (!numDatasets) {
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return
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}
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if (numDatasets === 1) {
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const infoDict = getElFromObjectInfo(0)
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const info_ = infoDict.items
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const { place, number } = info_[currentInfo]
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prepareLayerPopUp(lat, lng, i, `popup-${infoDict.datasetName}`)
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.setContent(genPopUp(datasetDictNameDisplayName[infoDict.datasetName], place, number, total, currentInfo + 1, info_.length))
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.openOn(mymap)
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if (info_.length === 1) {
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$('#previous-info-btn').prop('disabled', true)
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$('#next-info-btn').prop('disabled', true)
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$('.popup-controls').hide()
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}
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} else {
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const { datasetName, number } = getElFromObjectInfo(currentInfo)
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prepareLayerPopUp(lat, lng, i, `popup-${datasetName}`)
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.setContent(genMultipleDatasetsPopUp(number, currentInfo + 1, getInfoLength(), datasetDictNameDisplayName[datasetName]))
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.openOn(mymap)
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}
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}
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// eslint-disable-next-line no-unused-vars
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function previousInfo () {
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const infoLength = getInfoLength()
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const previousCurrentInfo = currentInfo
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currentInfo = (currentInfo + infoLength - 1) % infoLength
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displayInfoText(previousCurrentInfo)
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}
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// eslint-disable-next-line no-unused-vars
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function nextInfo () {
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const infoLength = getInfoLength()
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const previousCurrentInfo = currentInfo
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currentInfo = (currentInfo + 1) % infoLength
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displayInfoText(previousCurrentInfo)
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}
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function displayInfoText (previousInfoNum) {
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const previousInfo = hasInfoMultipleDatasets() ? getElFromObjectInfo(previousInfoNum) : getElFromObjectInfo(0).items[previousInfoNum]
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const info_ = hasInfoMultipleDatasets() ? getElFromObjectInfo(currentInfo) : getElFromObjectInfo(0).items[currentInfo]
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const infoLength = getInfoLength()
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const datasetInfo = $('#dataset-info')
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if (datasetInfo) {
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$(datasetInfo).html(datasetDictNameDisplayName[info_.datasetName])
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}
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$('#place-info').html(info_.place ? info_.place : info_.datasetName)
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$('#digit-info').html(info_.number)
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$('#count-info').html(currentInfo + 1 + ' z ' + infoLength)
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$('.leaflet-popup').removeClass(`popup-${previousInfo.datasetName}`)
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$('.leaflet-popup').addClass(`popup-${info_.datasetName}`)
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}
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// eslint-disable-next-line no-unused-vars
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function setMapView (latitude, longitude, zoom) {
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localStorage.setItem('lat', latitude)
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localStorage.setItem('lng', longitude)
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localStorage.setItem('zoom', zoom)
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mymap.setView([latitude, longitude], zoom)
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}
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/**
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* Change animation start from playing to stopped or the other way round
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*/
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// eslint-disable-next-line no-unused-vars
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function changeAnimationState () {
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isAnimationRunning = !isAnimationRunning
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if (isAnimationRunning) {
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$('#play-pause').attr('class', 'pause')
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timer = setInterval(
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function () {
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next()
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},
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800
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)
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} else {
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clearTimeout(timer)
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$('#play-pause').attr('class', 'play')
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}
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}
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// eslint-disable-next-line no-unused-vars
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function previous () {
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currentTime = (currentTime + 23) % 24
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drawHeatmap(data[currentTime])
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setTimeline()
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mymap.closePopup()
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updateHeaderControls()
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changeUrl()
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}
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function next () {
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currentTime = (currentTime + 1) % 24
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drawHeatmap(data[currentTime])
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setTimeline()
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mymap.closePopup()
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updateHeaderControls()
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changeUrl()
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}
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const typeUrlReducer = (accumulator, currentValue) => accumulator + currentValue
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/**
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* Change browser url based on animation step
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*/
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function changeUrl () {
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window.history.pushState(
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'',
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document.title,
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window.location.origin + window.location.pathname + `?date=${$('#date').val()}&time=${currentTime}${datasetSelected.reduce((acc, current) => acc + '&type[]=' + current, '')}`
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)
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}
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function updateHeaderControls () {
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document.getElementById('time').value = currentTime
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}
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function setTimeline () {
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$('#timeline').text(currentTime + ':00')
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$('#timeline').attr('class', 'time hour-' + currentTime)
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}
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/**
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* Load and display heatmap layer for current data
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* @param {string} opendataRoute route to dataset source
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* @param {string} positionsRoute route to dataset postitions source
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*/
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// eslint-disable-next-line no-unused-vars
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async function loadCurrentTimeHeatmap (opendataRoute, positionsRoute) {
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dataSourceRoute = opendataRoute
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data = []
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const dataSourceMarks = {}
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const allPromises = []
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const date = $('#date').val()
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currentTime = parseInt($('#time').children('option:selected').val())
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setTimeline()
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data[currentTime] = {}
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const dataSelectedHandler = async (datasetName) => {
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const marks = await fetchDataSourceMarks(positionsRoute, datasetName)
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const datasetData = await fetchByNameDate(dataSourceRoute, datasetName, date, currentTime)
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dataSourceMarks[datasetName] = marks
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data[currentTime][datasetName] = datasetData
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}
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await datasetSelected.forEach((datasetName) => {
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allPromises.push(dataSelectedHandler(datasetName))
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})
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Promise.all(allPromises).then(
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316
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() => {
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drawDataSourceMarks(dataSourceMarks)
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drawHeatmap(data[currentTime])
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preload(currentTime, 1, date)
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preload(currentTime, -1, date)
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}
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)
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}
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324
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325
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function drawDataSourceMarks (data) {
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326
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if (marksLayer != null) {
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327
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L.removeLayer(marksLayer)
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}
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329
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marksLayer = L.layerGroup()
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Object.keys(data).forEach((key_) => {
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for (var key in data[key_]) {
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332
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const { x, y, name } = data[key_][key]
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const pop =
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prepareLayerPopUp(x, y, 1, `popup-${key_}`)
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.setContent(genPopUp(datasetDictNameDisplayName[key_], name, 0, 0, 1, 1))
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const newCircle =
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337
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L.circle([x, y], { radius: 2, fillOpacity: 0.8, color: '#004fb3', fillColor: '#004fb3', bubblingMouseEvents: true })
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.bindPopup(pop)
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globalMarkersHolder[x + '' + y] = [newCircle, pop] // add new marker to global holders
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340
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marksLayer.addLayer(
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341
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newCircle
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342
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)
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343
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}
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})
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345
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346
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marksLayer.setZIndex(-1).addTo(mymap)
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}
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348
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349
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async function preload (time, change, date) {
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for (let nTime = time + change; nTime >= 0 && nTime <= 23; nTime = nTime + change) {
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351
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if (!data[nTime]) {
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data[nTime] = {}
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datasetSelected.forEach(async (datasetName) => {
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data[nTime][datasetName] = await fetchByNameDate(dataSourceRoute, datasetName, date, nTime)
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})
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356
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}
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357
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}
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}
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359
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360
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function drawHeatmap (dataRaw) {
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361
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// Todo still switched
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362
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const dataDict = dataRaw
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363
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const mergedPoints = []
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364
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let max = 0
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365
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if (Object.keys(globalMarkersChanged).length) {
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366
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Object.keys(globalMarkersChanged).forEach(function (key) {
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367
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globalMarkersChanged[key][0].bindPopup(globalMarkersChanged[key][1])
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368
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})
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369
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globalMarkersChanged = {}
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370
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}
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371
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Object.keys(dataDict).forEach((key) => {
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372
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const data = dataDict[key]
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373
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max = Math.max(max, data.max)
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374
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if (data != null) {
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375
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// Bind back popups for markers (we dont know if there is any data for this marker or not)
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376
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const points = data.items.map((point) => {
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377
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const { x, y, number } = point
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378
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const key = x + '' + y
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379
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const holder = globalMarkersHolder[key]
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380
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if (!globalMarkersChanged[key] && number) {
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381
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// There is data for this marker => unbind popup with zero value
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382
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holder[0] = holder[0].unbindPopup()
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383
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globalMarkersChanged[key] = holder
|
384
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}
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385
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return [x, y, number]
|
386
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})
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387
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mergedPoints.push(...points)
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388
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} else {
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389
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if (heatmapLayer != null) {
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390
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mymap.removeLayer(heatmapLayer)
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391
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}
|
392
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}
|
393
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})
|
394
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if (heatmapLayer != null) {
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395
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mymap.removeLayer(heatmapLayer)
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396
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}
|
397
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if (mergedPoints.length) {
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398
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heatmapLayer = L.heatLayer(mergedPoints, { max: max, minOpacity: 0.5, radius: 35, blur: 30 }).addTo(mymap)
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399
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}
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400
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}
|
401
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|
402
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/**
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403
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* Checks dataset availibility
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404
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* @param {string} route authority for datasets availibility checks
|
405
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*/
|
406
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// eslint-disable-next-line no-unused-vars
|
407
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function checkDataSetsAvailability (route) {
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408
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$.ajax({
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409
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type: 'POST',
|
410
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// Todo it might be good idea to change db collections format
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url: route + '/' + $('#date').val(),
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success: function (result) {
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413
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updateAvailableDataSets(result)
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}
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})
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}
|
417
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|
418
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function updateAvailableDataSets (available) {
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419
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let leastOneOptionEnabled = false
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420
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// datasetSelected = []
|
421
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$('#dataset-dropdown .dropdown-item').each(function () {
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422
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const input = $(this).find('input')
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423
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const inputVal = input[0].value
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424
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if (!(inputVal in available)) {
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425
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$(this).addClass('disabled')
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426
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$(input).prop('checked', false)
|
427
|
} else {
|
428
|
leastOneOptionEnabled = true
|
429
|
$(this).removeClass('disabled')
|
430
|
}
|
431
|
})
|
432
|
|
433
|
$('#submit-btn').prop('disabled', !leastOneOptionEnabled)
|
434
|
}
|
435
|
|
436
|
function formatDate (date) {
|
437
|
var day = String(date.getDate())
|
438
|
var month = String(date.getMonth() + 1)
|
439
|
|
440
|
if (day.length === 1) {
|
441
|
day = '0' + day
|
442
|
}
|
443
|
|
444
|
if (month.length === 1) {
|
445
|
month = '0' + month
|
446
|
}
|
447
|
|
448
|
return date.getFullYear() + '-' + month + '-' + day
|
449
|
}
|
450
|
|
451
|
// eslint-disable-next-line no-unused-vars
|
452
|
function initDatepicker (availableDatesSource) {
|
453
|
var availableDates = ''
|
454
|
|
455
|
$.ajax({
|
456
|
type: 'GET',
|
457
|
url: availableDatesSource,
|
458
|
success: function (result) {
|
459
|
availableDates = String(result).split(',')
|
460
|
}
|
461
|
}).then(function () {
|
462
|
$('#date').datepicker({
|
463
|
format: 'yyyy-mm-dd',
|
464
|
language: 'cs',
|
465
|
beforeShowDay: function (date) {
|
466
|
if (availableDates.indexOf(formatDate(date)) < 0) {
|
467
|
return { enabled: false, tooltip: 'Žádná data' }
|
468
|
} else {
|
469
|
return { enabled: true }
|
470
|
}
|
471
|
},
|
472
|
autoclose: true
|
473
|
})
|
474
|
})
|
475
|
}
|
476
|
|
477
|
function initLocationsMenu () {
|
478
|
var locationsWrapper = '.locations'
|
479
|
var locationsDisplayClass = 'show'
|
480
|
|
481
|
if ($(window).width() <= 480) {
|
482
|
$(locationsWrapper).removeClass(locationsDisplayClass)
|
483
|
} else {
|
484
|
$(locationsWrapper).addClass(locationsDisplayClass)
|
485
|
}
|
486
|
}
|
487
|
|
488
|
function openDatepicker () {
|
489
|
if ($(window).width() <= 990) {
|
490
|
$('.navbar-collapse').collapse()
|
491
|
}
|
492
|
|
493
|
$('#date').datepicker('show')
|
494
|
}
|
495
|
function onDocumentReady () {
|
496
|
$('#dataset-dropdown').on('click', function (e) {
|
497
|
e.stopPropagation()
|
498
|
})
|
499
|
datasetSelected = []
|
500
|
$('#dataset-dropdown .dropdown-item').each(function () {
|
501
|
const input = $(this).find('input')
|
502
|
const inputVal = input[0].value
|
503
|
if (input[0].checked) {
|
504
|
datasetSelected.push(inputVal)
|
505
|
}
|
506
|
datasetDictNameDisplayName[inputVal] = $(input).data('dataset-display-name')
|
507
|
})
|
508
|
$('#submit-btn').prop('name', '')
|
509
|
}
|