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import L from 'leaflet'
import './leaflet.bezier'
const arcStyles = {
edu: {
color: 'rgb(245, 246, 150)',
fillColor: 'rgb(245, 246, 150)',
opacity: 0.5,
weight: '1',
},
company: {
color: 'rgb(50, 100, 246)',
fillColor: 'rgb(50, 100, 246)',
opacity: 1.0,
weight: '2',
},
gov: {
color: 'rgb(245, 150, 100)',
fillColor: 'rgb(245, 150, 150)',
opacity: 1.0,
weight: '2',
},
mil: {
color: 'rgb(245, 0, 0)',
fillColor: 'rgb(245, 0, 0)',
opacity: 1.0,
weight: '2',
},
}
const sortOrder = ['edu', 'company', 'gov', 'mil']
const redDot = L.icon({
iconUrl: '/assets/img/reddot.png',
iconSize: [17, 17], // size of the icon
iconAnchor: [8, 8], // point of the icon which will correspond to marker's location
popupAnchor: [0, -5] // point from which the popup should open relative to the iconAnchor
})
function addMarker(map, latlng, citations) {
const marker = L.marker(latlng, { icon: redDot }).addTo(map)
let message = citations.map(citation => {
const { title, addresses, year, pdf, doi } = citation
let rec = [
"<b>", title, "</b>",
]
if (pdf && pdf.length) {
rec.unshift("<a href='" + pdf[0] + "' target='_blank'>")
rec.push("</a>")
}
else if (doi && doi.length) {
rec.unshift("<a href='" + doi[0] + "' target='_blank'>")
rec.push("</a>")
}
if (year) {
rec.push(" (" + year + ")")
}
const addressString = addresses.map(addr => addr.name).join('<br/>')
rec.push("<br>")
rec.push(addressString)
return rec.join("")
})
marker.bindPopup(message.join('<br><br>'))
return marker
}
function addArc(map, src, dest, arcStyle) {
L.bezier({
path: [
[
{ lat: src[0], lng: src[1] },
{ lat: dest[0], lng: dest[1] },
],
]
}, arcStyle).addTo(map)
}
export default function append(el, payload) {
const { data } = payload
if (!data) return
let { paper, citations } = data
let source = [0, 0]
let map = L.map(el).setView([25, 0], 2)
L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
maxZoom: 18,
id: 'mapbox.dark',
style: 'mapbox://styles/mapbox/dark-v9',
accessToken: 'pk.eyJ1IjoiZmFuc2FsY3kiLCJhIjoiY2pvN3I1czJwMHF5NDNrbWRoMWpteHlrdCJ9.kMpM5syQUhVjKkn1iVx9fg'
}).addTo(map)
if (paper.addresses && paper.addresses.length) {
source = [paper.addresses[0].lat, paper.addresses[0].lng].map(n => (parseFloat(n) || 0))
} else {
console.error("No address found for root paper")
// console.log(data)
}
// group papers by address
let citationsByAddress = {}
citations.forEach(citation => {
if (!citation.addresses) {
// console.log(citation)
return
}
// console.log(citation)
citation.addresses.forEach(address => {
if (!(address.name in citationsByAddress)) {
citationsByAddress[address.name] = { address, citations: []}
}
citationsByAddress[address.name].citations.push(citation)
})
})
Object.keys(citationsByAddress).map(name => {
const { citations: citationList, address: citationAddress } = citationsByAddress[name]
// console.log(name, citationsByAddress[name])
// console.log(citation)
const latlng = [citationAddress.lat, citationAddress.lng].map(n => parseFloat(n))
if (Number.isNaN(latlng[0]) || Number.isNaN(latlng[1])) return
addMarker(map, latlng, citationList)
const style = { ...arcStyles[citationAddress.type] }
let weight = Math.min(citationList.length, 5)
let opacity = 0.5 + Math.min(citationList.length / 5, 0.5)
if (citationAddress.type !== 'edu') {
weight += 1
opacity = 1
}
style.weight = String(weight)
style.opacity = opacity
addArc(map, source, latlng, style)
})
// console.log(paper)
const rootMarker = addMarker(map, source, [paper])
rootMarker.openPopup()
// a transparent div to cover the map, so normal scroll events will not be eaten by leaflet
const mapCover = document.createElement("div")
mapCover.classList.add("map_cover")
mapCover.innerHTML = "<div class='cover_message'>Click here to explore the map</div>"
mapCover.querySelector('div').addEventListener('click', () => {
map.scrollWheelZoom.enable()
if (mapCover.parentNode === el) {
el.removeChild(mapCover)
}
})
function stopPropagation(e) {
e.stopPropagation()
}
mapCover.addEventListener('mousewheel', stopPropagation, true)
mapCover.addEventListener('DOMMouseScroll', stopPropagation, true)
map.scrollWheelZoom.disable()
map.on('focus', () => {
map.scrollWheelZoom.enable()
if (mapCover.parentNode === el) {
el.removeChild(mapCover)
}
})
map.on('blur', () => {
map.scrollWheelZoom.disable()
// el.appendChild(mapCover)
})
el.appendChild(mapCover)
}
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