import { ServerRegistry } from './servers' import { SortController } from './sort' import { GraphDisplayManager } from './graph' import { MojangUpdater } from './mojang' import { PercentageBar } from './percbar' import { FavoritesManager } from './favorites' import { Tooltip, Caption, formatNumber } from './util' export class App { publicConfig constructor () { this.tooltip = new Tooltip() this.caption = new Caption() this.serverRegistry = new ServerRegistry(this) this.sortController = new SortController(this) this.graphDisplayManager = new GraphDisplayManager(this) this.mojangUpdater = new MojangUpdater() this.percentageBar = new PercentageBar(this) this.favoritesManager = new FavoritesManager(this) this._taskIds = [] } setPageReady (isReady) { document.getElementById('push').style.display = isReady ? 'block' : 'none' document.getElementById('footer').style.display = isReady ? 'block' : 'none' document.getElementById('status-overlay').style.display = isReady ? 'none' : 'block' } setPublicConfig (publicConfig) { this.publicConfig = publicConfig this.serverRegistry.assignServers(publicConfig.servers) // Start repeating frontend tasks once it has received enough data to be considered active // This simplifies management logic at the cost of each task needing to safely handle empty data this.initTasks() } handleSyncComplete () { this.caption.hide() // Load favorites since all servers are registered this.favoritesManager.loadLocalStorage() // Run a single bulk server sort instead of per-add event since there may be multiple this.sortController.show() this.percentageBar.redraw() } initTasks () { this._taskIds.push(setInterval(this.sortController.sortServers, 5000)) this._taskIds.push(setInterval(this.updateGlobalStats, 1000)) this._taskIds.push(setInterval(this.percentageBar.redraw, 1000)) } handleDisconnect () { this.tooltip.hide() // Reset individual tracker elements to flush any held data this.serverRegistry.reset() this.sortController.reset() this.graphDisplayManager.reset() this.mojangUpdater.reset() this.percentageBar.reset() // Undefine publicConfig, resynced during the connection handshake this.publicConfig = undefined // Clear all task ids, if any this._taskIds.forEach(clearInterval) this._taskIds = [] // Reset hidden values created by #updateGlobalStats this._lastTotalPlayerCount = undefined this._lastServerRegistrationCount = undefined // Reset modified DOM structures document.getElementById('stat_totalPlayers').innerText = 0 document.getElementById('stat_networks').innerText = 0 // Modify page state to display loading overlay this.caption.set('Lost connection!') this.setPageReady(false) } getTotalPlayerCount () { return this.serverRegistry.getServerRegistrations() .map(serverRegistration => serverRegistration.playerCount) .reduce((sum, current) => sum + current, 0) } addServer = (pings) => { // Even if the backend has never pinged the server, the frontend is promised a placeholder object. // result = undefined // error = defined with "Waiting" description // info = safely defined with configured data const latestPing = pings[pings.length - 1] const serverRegistration = this.serverRegistry.createServerRegistration(latestPing.serverId) serverRegistration.initServerStatus(latestPing) // Push the historical data into the graph // This will trim and format the data so it is ready for the graph to render once init serverRegistration.addGraphPoints(pings) // Create the plot instance internally with the restructured and cleaned data serverRegistration.buildPlotInstance() // Handle the last known state (if any) as an incoming update // This triggers the main update pipeline and enables centralized update handling serverRegistration.updateServerStatus(latestPing, true, this.publicConfig.minecraftVersions) // Allow the ServerRegistration to bind any DOM events with app instance context serverRegistration.initEventListeners() } updateGlobalStats = () => { // Only redraw when needed // These operations are relatively cheap, but the site already does too much rendering const totalPlayerCount = this.getTotalPlayerCount() if (totalPlayerCount !== this._lastTotalPlayerCount) { this._lastTotalPlayerCount = totalPlayerCount document.getElementById('stat_totalPlayers').innerText = formatNumber(totalPlayerCount) } // Only redraw when needed // These operations are relatively cheap, but the site already does too much rendering const serverRegistrationCount = this.serverRegistry.getServerRegistrations().length if (serverRegistrationCount !== this._lastServerRegistrationCount) { this._lastServerRegistrationCount = serverRegistrationCount document.getElementById('stat_networks').innerText = serverRegistrationCount } } }