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let instance = null;
let ColorMap = {};

export const ColorService = function() {
  return {
    getInstance: () => {
      if (instance != null) return instance;
      else {
        ColorMap = {};
        instance = {
          getColor: str => {
            if (!ColorMap[str]) {
              ColorMap[str] = randomPick(MockColors);
            }
            return ColorMap[str];
          }
        };
      }
      return instance;
    },

    reset: () => {
      ColorMap = {};
    }
  };
};

const randomPick = arr => {
  return arr[Math.floor(Math.random() * arr.length)];
};

const MockColors = [
  "#F44336",
  "#FFEBEE",
  "#FFCDD2",
  "#EF9A9A",
  "#E57373",
  "#EF5350",
  "#E53935",
  "#D32F2F",
  "#C62828",
  "#B71C1C",
  "#FF8A80",
  "#FF5252",
  "#FF1744",
  "#D50000",
  "#FCE4EC",
  "#F8BBD0",
  "#F48FB1",
  "#F06292",
  "#EC407A",
  "#E91E63",
  "#D81B60",
  "#C2185B",
  "#AD1457",
  "#880E4F",
  "#FF80AB",
  "#FF4081",
  "#F50057",
  "#C51162",
  "#F3E5F5",
  "#E1BEE7",
  "#CE93D8",
  "#BA68C8",
  "#AB47BC",
  "#9C27B0",
  "#8E24AA",
  "#7B1FA2",
  "#6A1B9A",
  "#4A148C",
  "#EA80FC",
  "#E040FB",
  "#D500F9",
  "#AA00FF",
  "#EDE7F6",
  "#D1C4E9",
  "#B39DDB",
  "#9575CD",
  "#7E57C2",
  "#673AB7",
  "#5E35B1",
  "#512DA8",
  "#4527A0",
  "#311B92",
  "#B388FF",
  "#7C4DFF",
  "#651FFF",
  "#6200EA",
  "#E8EAF6",
  "#C5CAE9",
  "#9FA8DA",
  "#7986CB",
  "#5C6BC0",
  "#3F51B5",
  "#3949AB",
  "#303F9F",
  "#283593",
  "#1A237E",
  "#8C9EFF",
  "#536DFE",
  "#3D5AFE",
  "#304FFE",
  "#E3F2FD",
  "#BBDEFB",
  "#90CAF9",
  "#64B5F6",
  "#42A5F5",
  "#2196F3",
  "#1E88E5",
  "#1976D2",
  "#1565C0",
  "#0D47A1",
  "#82B1FF",
  "#448AFF",
  "#2979FF",
  "#2962FF",
  "#E1F5FE",
  "#B3E5FC",
  "#81D4FA",
  "#4FC3F7",
  "#29B6F6",
  "#03A9F4",
  "#039BE5",
  "#0288D1",
  "#0277BD",
  "#01579B",
  "#80D8FF",
  "#40C4FF",
  "#00B0FF",
  "#0091EA",
  "#E0F7FA",
  "#B2EBF2",
  "#80DEEA",
  "#4DD0E1",
  "#26C6DA",
  "#00BCD4",
  "#00ACC1",
  "#0097A7",
  "#00838F",
  "#006064",
  "#84FFFF",
  "#18FFFF",
  "#00E5FF",
  "#00B8D4",
  "#E0F2F1",
  "#B2DFDB",
  "#80CBC4",
  "#4DB6AC",
  "#26A69A",
  "#009688",
  "#00897B",
  "#00796B",
  "#00695C",
  "#004D40",
  "#A7FFEB",
  "#64FFDA",
  "#1DE9B6",
  "#00BFA5",
  "#E8F5E9",
  "#C8E6C9",
  "#A5D6A7",
  "#81C784",
  "#66BB6A",
  "#4CAF50",
  "#43A047",
  "#388E3C",
  "#2E7D32",
  "#1B5E20",
  "#B9F6CA",
  "#69F0AE",
  "#00E676",
  "#00C853",
  "#F1F8E9",
  "#DCEDC8",
  "#C5E1A5",
  "#AED581",
  "#9CCC65",
  "#8BC34A",
  "#7CB342",
  "#689F38",
  "#558B2F",
  "#33691E",
  "#CCFF90",
  "#B2FF59",
  "#76FF03",
  "#64DD17",
  "#F9FBE7",
  "#F0F4C3",
  "#E6EE9C",
  "#DCE775",
  "#D4E157",
  "#CDDC39",
  "#C0CA33",
  "#AFB42B",
  "#9E9D24",
  "#827717",
  "#F4FF81",
  "#EEFF41",
  "#C6FF00",
  "#AEEA00",
  "#FFFDE7",
  "#FFF9C4",
  "#FFF59D",
  "#FFF176",
  "#FFEE58",
  "#FFEB3B",
  "#FDD835",
  "#FBC02D",
  "#F9A825",
  "#F57F17",
  "#FFFF8D",
  "#FFFF00",
  "#FFEA00",
  "#FFD600",
  "#FFF8E1",
  "#FFECB3",
  "#FFE082",
  "#FFD54F",
  "#FFCA28",
  "#FFC107",
  "#FFB300",
  "#FFA000",
  "#FF8F00",
  "#FF6F00",
  "#FFE57F",
  "#FFD740",
  "#FFC400",
  "#FFAB00",
  "#FFF3E0",
  "#FFE0B2",
  "#FFCC80",
  "#FFB74D",
  "#FFA726",
  "#FF9800",
  "#FB8C00",
  "#F57C00",
  "#EF6C00",
  "#E65100",
  "#FFD180",
  "#FFAB40",
  "#FF9100",
  "#FF6D00",
  "#FBE9E7",
  "#FFCCBC",
  "#FFAB91",
  "#FF8A65",
  "#FF7043",
  "#FF5722",
  "#F4511E",
  "#E64A19",
  "#D84315",
  "#BF360C",
  "#FF9E80",
  "#FF6E40",
  "#FF3D00",
  "#DD2C00",
  "#EFEBE9",
  "#D7CCC8",
  "#BCAAA4",
  "#A1887F",
  "#8D6E63",
  "#795548",
  "#6D4C41",
  "#5D4037",
  "#4E342E",
  "#3E2723",
  "#FAFAFA",
  "#F5F5F5",
  "#EEEEEE",
  "#E0E0E0",
  "#BDBDBD",
  "#9E9E9E",
  "#757575",
  "#616161",
  "#424242",
  "#212121",
  "#ECEFF1",
  "#CFD8DC",
  "#B0BEC5",
  "#90A4AE",
  "#78909C",
  "#607D8B",
  "#546E7A",
  "#455A64",
  "#37474F",
  "#263238",
  "#000000"
];