import * as am5 from "@amcharts/amcharts5";
import * as am5xy from "@amcharts/amcharts5/xy";
import am5themes_Animated from "@amcharts/amcharts5/themes/Animated";


// Create root element
// https://www.amcharts.com/docs/v5/getting-started/#Root_element
const root = am5.Root.new("chartdiv");


// Set themes
// https://www.amcharts.com/docs/v5/concepts/themes/
root.setThemes([
  am5themes_Animated.new(root)
]);


// Create chart
// https://www.amcharts.com/docs/v5/charts/xy-chart/
const chart = root.container.children.push(am5xy.XYChart.new(root, {
  panX: true,
  panY: true,
  wheelX: "panX",
  wheelY: "zoomX"
}));


// Add cursor
// https://www.amcharts.com/docs/v5/charts/xy-chart/cursor/
const cursor = chart.set("cursor", am5xy.XYCursor.new(root, {}));
cursor.lineY.set("visible", false);


// Generate random data
let date = new Date();
date.setHours(0, 0, 0, 0);
let value1 = 100;
let value2 = 20;

function generateData() {
  value1 = Math.round((Math.random() * 10 - 5) + value1);
  value2 = Math.round((Math.random() * 4 - 2) + value2);

  if (value1 < 10) {
    value1 = 10;
  }

  if (value2 < 1) {
    value2 = 1;
  }

  am5.time.add(date, "day", 1);
  return { date: date.getTime(), value1: value1, value2: value2 };
}

function generateDatas(count) {
  const data = [];
  for (let i = 0; i < count; ++i) {
    data.push(generateData());
  }
  return data;
}


// Create axes
// https://www.amcharts.com/docs/v5/charts/xy-chart/axes/
const xAxis = chart.xAxes.push(am5xy.DateAxis.new(root, {
  baseInterval: { timeUnit: "day", count: 1 },
  renderer: am5xy.AxisRendererX.new(root, {
    minorGridEnabled: true
  }),
  tooltip: am5.Tooltip.new(root, {})
}));

const yAxis = chart.yAxes.push(am5xy.ValueAxis.new(root, {
  renderer: am5xy.AxisRendererY.new(root, {
    minorGridEnabled: true,
    minGridDistance:70
  })
}));

// Add series
// https://www.amcharts.com/docs/v5/charts/xy-chart/series/
const series1 = chart.series.push(am5xy.StepLineSeries.new(root, {
  name: "Series",
  xAxis: xAxis,
  yAxis: yAxis,
  valueYField: "value1",
  valueXField: "date",
  tooltip: am5.Tooltip.new(root, {
    labelText: "{valueY}"
  })
}));
series1.fills.template.setAll({
  fillOpacity: 0.5,
  visible: true
});

const series2 = chart.series.push(am5xy.StepLineSeries.new(root, {
  name: "Series",
  stacked: true,
  xAxis: xAxis,
  yAxis: yAxis,
  valueYField: "value2",
  valueXField: "date",
  tooltip: am5.Tooltip.new(root, {
    labelText: "{valueY}"
  })
}));
series2.fills.template.setAll({
  fillOpacity: 0.5,
  visible: true
});


// Add scrollbar
// https://www.amcharts.com/docs/v5/charts/xy-chart/scrollbars/
chart.set("scrollbarX", am5.Scrollbar.new(root, {
  orientation: "horizontal"
}));

let data = generateDatas(200);
series1.data.setAll(data);
series2.data.setAll(data);

// Make stuff animate on load
// https://www.amcharts.com/docs/v5/concepts/animations/#Forcing_appearance_animation
series1.appear(1000);
series2.appear(1000);
chart.appear(1000, 100);