COVID-19 Inzidenz-Widget für iOS innerhalb Deutschlands 🇩🇪

incidence.js

// Licence: Robert Koch-Institut (RKI), dl-de/by-2-0

class IncidenceWidget {

  constructor() {
    this.previousDaysToShow = 31;
    this.apiUrlDistricts = (location) => `https://services7.arcgis.com/mOBPykOjAyBO2ZKk/arcgis/rest/services/RKI_Landkreisdaten/FeatureServer/0/query?where=1%3D1&outFields=RS,GEN,cases7_bl_per_100k,cases7_per_100k,BL&geometry=${location.longitude.toFixed(3)}%2C${location.latitude.toFixed(3)}&geometryType=esriGeometryPoint&inSR=4326&spatialRel=esriSpatialRelWithin&returnGeometry=false&outSR=4326&f=json`
    this.apiUrlDistrictsHistory = (districtId) => `https://services7.arcgis.com/mOBPykOjAyBO2ZKk/ArcGIS/rest/services/Covid19_hubv/FeatureServer/0/query?where=IdLandkreis%20%3D%20%27${districtId}%27%20AND%20Meldedatum%20%3E%3D%20TIMESTAMP%20%27${this.getDateString(-this.previousDaysToShow)}%2000%3A00%3A00%27%20AND%20Meldedatum%20%3C%3D%20TIMESTAMP%20%27${this.getDateString(1)}%2000%3A00%3A00%27&outFields=Landkreis,Meldedatum,AnzahlFall&outSR=4326&f=json`
    this.stateToAbbr = {
      'Baden-Württemberg': 'BW',
      'Bayern': 'BY',
      'Berlin': 'BE',
      'Brandenburg': 'BB',
      'Bremen': 'HB',
      'Hamburg': 'HH',
      'Hessen': 'HE',
      'Mecklenburg-Vorpommern': 'MV',
      'Niedersachsen': 'NI',
      'Nordrhein-Westfalen': 'NRW',
      'Rheinland-Pfalz': 'RP',
      'Saarland': 'SL',
      'Sachsen': 'SN',
      'Sachsen-Anhalt': 'ST',
      'Schleswig-Holstein': 'SH',
      'Thüringen': 'TH'
    };
  }
  
  async run() {
      let widget = await this.createWidget()
      if (!config.runsInWidget) {
        await widget.presentSmall()
      }
      Script.setWidget(widget)
      Script.complete()
  }

  async createWidget(items) {
    let data = await this.getData()
    
    // Basic widget setup
    let list = new ListWidget()
    list.setPadding(0, 0, 0, 0)
    let textStack = list.addStack()
    textStack.setPadding(14, 14, 0, 14)
    textStack.layoutVertically()
    textStack.topAlignContent()
       
    // Header
    let header = textStack.addText("🦠 Inzidenz".toUpperCase())
    header.font = Font.mediumSystemFont(13)
    textStack.addSpacer()
    
    if(data.error) {
      // Error handling
      let loadingIndicator = textStack.addText(data.error.toUpperCase())
      textStack.setPadding(14, 14, 14, 14)
      loadingIndicator.font = Font.mediumSystemFont(13)
      loadingIndicator.textOpacity = 0.5
      let spacer = textStack.addStack()
      spacer.addSpacer();
    } else {
      // Enable caching
      list.refreshAfterDate = new Date(Date.now() + 60*60*1000)

      // Main stack for value and area name
      let incidenceStack = textStack.addStack()
      let valueStack = incidenceStack.addStack()
      incidenceStack.layoutVertically()
      let incidenceValueLabel = valueStack.addText(data.incidence + data.trend)
      incidenceValueLabel.font = Font.boldSystemFont(24)
      incidenceValueLabel.textColor = data.incidence >= 100 ? new Color("9e000a") : data.incidence >= 50 ? Color.red() : data.incidence >= 35 ? Color.yellow() : Color.green();
      incidenceStack.addText(data.areaName)
      
      // Chip for displaying state data      
      valueStack.addSpacer(4)
      let stateStack = valueStack.addStack()
      let stateText = stateStack.addText(data.incidenceBySide + "\n" + data.areaNameBySide)
      stateStack.backgroundColor = new Color('888888', .5)
      stateStack.cornerRadius = 4
      stateStack.setPadding(2, 4, 2, 4)
      stateText.font = Font.mediumSystemFont(9)
      stateText.textColor = Color.white()
      valueStack.addSpacer()
      
      // Chart
      let chart = new LineChart(400, 120, data.timeline).configure((ctx, path) => {
        ctx.opaque = false;
        ctx.setFillColor(new Color("888888", .25));
        ctx.addPath(path);
        ctx.fillPath(path);
      }).getImage();
      let chartStack = list.addStack()
      chartStack.setPadding(0, 0, 0, 0)
      let img = chartStack.addImage(chart)
      img.applyFittingContentMode()
    }
    return list
  }
  
  async getData() {
     try {
      let location = await this.getLocation()
      if(location) {
        let currentData = await new Request(this.apiUrlDistricts(location)).loadJSON()
        let attr = currentData.features[0].attributes
        let historicalData = await new Request(this.apiUrlDistrictsHistory(attr.RS)).loadJSON()
        let aggregate = historicalData.features.map(f => f.attributes).reduce((dict, feature) => {
          dict[feature["Meldedatum"]] = (dict[feature["Meldedatum"]]|0) + feature["AnzahlFall"];
          return dict;
        }, {});
        let timeline = Object.keys(aggregate).sort().map(k => aggregate[k]);
        let casesYesterday7 = timeline.slice(-8, -1).reduce(this.sum);
        let casesToday7 = timeline.slice(-7).reduce(this.sum);
        let trend = (casesToday7 == casesYesterday7) ? '→' : (casesToday7 > casesYesterday7) ? '↑' : '↓';
        return { 
          incidence: attr.cases7_per_100k.toFixed(0), 
          areaName: attr.GEN, 
          trend: trend, 
          incidenceBySide: 
          attr.cases7_bl_per_100k.toFixed(0), 
          areaNameBySide: 
          this.stateToAbbr[attr.BL], 
          timeline: timeline
        };
      }
      return { error: "Standort nicht verfügbar." } 
    } catch(e) {
      return { error: "Fehler bei Datenabruf." };
    }
  }
  
  getDateString(addDays) {
    addDays = addDays || 0;
    return new Date(Date.now() + addDays * 24 * 60 * 60 * 1000).toISOString().substring(0, 10)
  }
  
  async getLocation() {
    try {
      if(args.widgetParameter) {
        let fixedCoordinates = args.widgetParameter.split(",").map(parseFloat)
        return { latitude: fixedCoordinates[0], longitude: fixedCoordinates[1] }
      } else {
        Location.setAccuracyToThreeKilometers()
        return await Location.current()
      }
    } catch(e) {
      return null;
    }
  }
  
  sum(a, b) {
    return a + b;
  }
  
}

class LineChart {

  constructor(width, height, values) {
    this.ctx = new DrawContext()
    this.ctx.size = new Size(width, height)
    this.values = values;
  }
  
  _calculatePath() {
    let maxValue = Math.max(...this.values);
    let minValue = Math.min(...this.values);
    let difference = maxValue - minValue;
    let count = this.values.length;
    let step = this.ctx.size.width / (count - 1);
    let points = this.values.map((current, index, all) => {
        let x = step*index
        let y = this.ctx.size.height - (current - minValue) / difference * this.ctx.size.height;
        return new Point(x, y)
    });
    return this._getSmoothPath(points);
  }
      
  _getSmoothPath(points) {
    let path = new Path()
    path.move(new Point(0, this.ctx.size.height));
    path.addLine(points[0]);
    for(var i = 0; i < points.length-1; i ++) {
      let xAvg = (points[i].x + points[i+1].x) / 2;
      let yAvg = (points[i].y + points[i+1].y) / 2;
      let avg = new Point(xAvg, yAvg);
      let cp1 = new Point((xAvg + points[i].x) / 2, points[i].y);
      let next = new Point(points[i+1].x, points[i+1].y);
      let cp2 = new Point((xAvg + points[i+1].x) / 2, points[i+1].y);
      path.addQuadCurve(avg, cp1);
      path.addQuadCurve(next, cp2);
    }
    path.addLine(new Point(this.ctx.size.width, this.ctx.size.height))
    path.closeSubpath()
    return path;
  }
  
  configure(fn) {
    let path = this._calculatePath()
    if(fn) {
      fn(this.ctx, path);
    } else {
      this.ctx.addPath(path);
      this.ctx.fillPath(path);
    }
    return this.ctx;
  }

}

await new IncidenceWidget().run();

@icsAT @kevinkub DANKE 👍🏼

@icsAT @kevinkub auch von mir dickes Danke!!

Hallo zusammen, nachdem ich zu diesem Thema und Materie ein absoluter Anfänger bin. Wie verändert man das so, das der Landkreis bzw. Ort in der nächsten Zeile steht. Vielen Dank schon mal im Voraus. Auch für das einfache „laienhafte“ erklären.

Irgendwie funktioniert seit 2 Tagen der Datenabruf nicht mehr. Entweder gar nicht oder die Inzidenzen sind deutlich zu hoch.
Jemand ne Idee was man tun kann?
Schönen Sonntag!

Dürfte daran liegen, dass du eine Widget-Version mit Impfrate verwendest. Hier existiert die bisherige Quelle, von der die Impfzahlen kamen, nicht mehr.
Quick an dirty wäre folgende Lösung:
Den Wert für vaccineStatus wie folgt ändern:
const vaccineStatus = "https://api.corona-zahlen.org/vaccinations";

Und in getVaccineData folgende Änderung:
const attr = data.vaccinated;
->
const attr = data.data.vaccinated;

Plessa kenn ich bin in Elsterwerda geboren.

Vielen Dank für eure Mühe. Ich lerne jeden Tag dazu

Datenabruf vom RKI seit 1. März unterbrochen. Ich habe gelesen, dass vielleicht hier Hilfe vorliegt
marlon360/rki-covid-api#504
Kann das jemand reparieren?
Vielen Dank!