320 lines
10 KiB
JavaScript
320 lines
10 KiB
JavaScript
import uPlot from 'uplot'
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import { RelativeScale } from './scale'
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import { formatNumber, formatTimestampSeconds, formatDate, formatMinecraftServerAddress, formatMinecraftVersions } from './util'
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import { uPlotTooltipPlugin } from './plugins'
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import MISSING_FAVICON from 'url:../images/missing_favicon.svg'
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export class ServerRegistry {
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constructor (app) {
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this._app = app
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this._serverIdsByName = []
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this._serverDataById = []
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this._registeredServers = []
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}
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assignServers (servers) {
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for (let i = 0; i < servers.length; i++) {
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const data = servers[i]
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this._serverIdsByName[data.name] = i
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this._serverDataById[i] = data
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}
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}
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createServerRegistration (serverId) {
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const serverData = this._serverDataById[serverId]
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const serverRegistration = new ServerRegistration(this._app, serverId, serverData)
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this._registeredServers[serverId] = serverRegistration
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return serverRegistration
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}
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getServerRegistration (serverKey) {
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if (typeof serverKey === 'string') {
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const serverId = this._serverIdsByName[serverKey]
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return this._registeredServers[serverId]
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} else if (typeof serverKey === 'number') {
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return this._registeredServers[serverKey]
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}
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}
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getServerRegistrations = () => Object.values(this._registeredServers)
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reset () {
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this._serverIdsByName = []
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this._serverDataById = []
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this._registeredServers = []
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// Reset modified DOM structures
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document.getElementById('server-list').innerHTML = ''
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}
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}
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export class ServerRegistration {
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playerCount = 0
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isVisible = true
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isFavorite = false
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rankIndex
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lastRecordData
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lastPeakData
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constructor (app, serverId, data) {
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this._app = app
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this.serverId = serverId
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this.data = data
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this._graphData = [[], []]
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this._failedSequentialPings = 0
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}
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getGraphDataIndex () {
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return this.serverId + 1
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}
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addGraphPoints (points, timestampPoints) {
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this._graphData = [
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timestampPoints.slice(),
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points
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]
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}
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buildPlotInstance () {
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const tickCount = 4
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// eslint-disable-next-line new-cap
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this._plotInstance = new uPlot({
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plugins: [
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uPlotTooltipPlugin((pos, id) => {
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if (pos) {
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const playerCount = this._graphData[1][id]
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if (typeof playerCount !== 'number') {
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this._app.tooltip.hide()
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} else {
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this._app.tooltip.set(pos.left, pos.top, 10, 10, `${formatNumber(playerCount)} Players<br>${formatTimestampSeconds(this._graphData[0][id])}`)
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}
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} else {
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this._app.tooltip.hide()
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}
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})
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],
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height: 100,
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width: 400,
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cursor: {
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y: false,
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drag: {
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setScale: false,
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x: false,
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y: false
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},
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sync: {
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key: 'minetrack-server',
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setSeries: true
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}
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},
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series: [
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{},
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{
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stroke: '#E9E581',
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width: 2,
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value: (_, raw) => `${formatNumber(raw)} Players`,
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spanGaps: true,
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points: {
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show: false
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}
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}
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],
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axes: [
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{
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show: false
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},
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{
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ticks: {
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show: false
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},
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font: '14px "Open Sans", sans-serif',
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stroke: '#A3A3A3',
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size: 55,
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grid: {
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stroke: '#333',
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width: 1
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},
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split: () => {
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const { scaledMin, scaledMax, scale } = RelativeScale.scale(this._graphData[1], tickCount)
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const ticks = RelativeScale.generateTicks(scaledMin, scaledMax, scale)
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return ticks
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}
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}
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],
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scales: {
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y: {
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auto: false,
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range: () => {
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const { scaledMin, scaledMax } = RelativeScale.scale(this._graphData[1], tickCount)
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return [scaledMin, scaledMax]
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}
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}
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},
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legend: {
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show: false
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}
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}, this._graphData, document.getElementById(`chart_${this.serverId}`))
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}
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handlePing (payload, timestamp) {
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if (typeof payload.playerCount === 'number') {
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this.playerCount = payload.playerCount
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// Reset failed ping counter to ensure the next connection error
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// doesn't instantly retrigger a layout change
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this._failedSequentialPings = 0
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} else {
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// Attempt to retain a copy of the cached playerCount for up to N failed pings
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// This prevents minor connection issues from constantly reshuffling the layout
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if (++this._failedSequentialPings > 5) {
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this.playerCount = 0
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}
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}
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// Use payload.playerCount so nulls WILL be pushed into the graphing data
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this._graphData[0].push(timestamp)
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this._graphData[1].push(payload.playerCount)
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// Trim graphData to within the max length by shifting out the leading elements
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for (const series of this._graphData) {
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if (series.length > this._app.publicConfig.serverGraphMaxLength) {
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series.shift()
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}
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}
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// Redraw the plot instance
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this._plotInstance.setData(this._graphData)
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}
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updateServerRankIndex (rankIndex) {
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this.rankIndex = rankIndex
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document.getElementById(`ranking_${this.serverId}`).innerText = `#${rankIndex + 1}`
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}
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_renderValue (prefix, handler) {
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const labelElement = document.getElementById(`${prefix}_${this.serverId}`)
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labelElement.style.display = 'block'
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const valueElement = document.getElementById(`${prefix}-value_${this.serverId}`)
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const targetElement = valueElement || labelElement
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if (targetElement) {
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if (typeof handler === 'function') {
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handler(targetElement)
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} else {
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targetElement.innerText = handler
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}
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}
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}
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_hideValue (prefix) {
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const element = document.getElementById(`${prefix}_${this.serverId}`)
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element.style.display = 'none'
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}
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updateServerStatus (ping, minecraftVersions) {
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if (ping.versions) {
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this._renderValue('version', formatMinecraftVersions(ping.versions, minecraftVersions[this.data.type]) || '')
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}
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if (ping.recordData) {
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this._renderValue('record', (element) => {
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if (ping.recordData.timestamp > 0) {
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element.innerText = `${formatNumber(ping.recordData.playerCount)} (${formatDate(ping.recordData.timestamp)})`
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element.title = `At ${formatDate(ping.recordData.timestamp)} ${formatTimestampSeconds(ping.recordData.timestamp)}`
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} else {
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element.innerText = formatNumber(ping.recordData.playerCount)
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}
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})
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this.lastRecordData = ping.recordData
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}
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if (ping.graphPeakData) {
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this._renderValue('peak', (element) => {
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element.innerText = formatNumber(ping.graphPeakData.playerCount)
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element.title = `At ${formatTimestampSeconds(ping.graphPeakData.timestamp)}`
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})
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this.lastPeakData = ping.graphPeakData
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}
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if (ping.error) {
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this._hideValue('player-count')
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this._renderValue('error', ping.error.message)
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} else if (typeof ping.playerCount !== 'number') {
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this._hideValue('player-count')
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// If the frontend has freshly connection, and the server's last ping was in error, it may not contain an error object
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// In this case playerCount will safely be null, so provide a generic error message instead
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this._renderValue('error', 'Failed to ping')
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} else if (typeof ping.playerCount === 'number') {
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this._hideValue('error')
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this._renderValue('player-count', formatNumber(ping.playerCount))
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}
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// An updated favicon has been sent, update the src
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if (ping.favicon) {
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const faviconElement = document.getElementById(`favicon_${this.serverId}`)
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// Since favicons may be URLs, only update the attribute when it has changed
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// Otherwise the browser may send multiple requests to the same URL
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if (faviconElement.getAttribute('src') !== ping.favicon) {
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faviconElement.setAttribute('src', ping.favicon)
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}
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}
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}
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initServerStatus (latestPing) {
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const serverElement = document.createElement('div')
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serverElement.id = `container_${this.serverId}`
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serverElement.innerHTML = `<div class="column column-favicon">
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<img class="server-favicon" src="${latestPing.favicon || MISSING_FAVICON}" id="favicon_${this.serverId}" title="${this.data.name}\n${formatMinecraftServerAddress(this.data.ip, this.data.port)}">
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<span class="server-rank" id="ranking_${this.serverId}"></span>
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</div>
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<div class="column column-status">
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<h3 class="server-name"><span class="${this._app.favoritesManager.getIconClass(this.isFavorite)}" id="favorite-toggle_${this.serverId}"></span> ${this.data.name}</h3>
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<span class="server-error" id="error_${this.serverId}"></span>
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<span class="server-label" id="player-count_${this.serverId}">Players: <span class="server-value" id="player-count-value_${this.serverId}"></span></span>
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<span class="server-label" id="peak_${this.serverId}">${this._app.publicConfig.graphDurationLabel} Peak: <span class="server-value" id="peak-value_${this.serverId}">-</span></span>
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<span class="server-label" id="record_${this.serverId}">Record: <span class="server-value" id="record-value_${this.serverId}">-</span></span>
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<span class="server-label" id="version_${this.serverId}"></span>
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</div>
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<div class="column column-graph" id="chart_${this.serverId}"></div>`
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serverElement.setAttribute('class', 'server')
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document.getElementById('server-list').appendChild(serverElement)
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}
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updateHighlightedValue (selectedCategory) {
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['player-count', 'peak', 'record'].forEach((category) => {
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const labelElement = document.getElementById(`${category}_${this.serverId}`)
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const valueElement = document.getElementById(`${category}-value_${this.serverId}`)
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if (selectedCategory && category === selectedCategory) {
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labelElement.setAttribute('class', 'server-highlighted-label')
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valueElement.setAttribute('class', 'server-highlighted-value')
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} else {
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labelElement.setAttribute('class', 'server-label')
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valueElement.setAttribute('class', 'server-value')
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}
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})
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}
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initEventListeners () {
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document.getElementById(`favorite-toggle_${this.serverId}`).addEventListener('click', () => {
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this._app.favoritesManager.handleFavoriteButtonClick(this)
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}, false)
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}
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}
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