(function(back) {
  const SETTINGS_FILE = "circlesclock.json";
  const storage = require('Storage');
  let settings = storage.readJSON(SETTINGS_FILE, 1) || {};
  function save(key, value) {
    settings[key] = value;
    storage.write(SETTINGS_FILE, settings);
  }

  const valuesCircleTypes = ["steps", "stepsDist", "hr", "battery", "weather", "sunprogress", "empty", "temperature", "pressure", "altitude"];
  const namesCircleTypes = ["steps", "distance", "heart", "battery", "weather", "sun progress", "empty", "temperature", "pressure", "altitude"];

  const valuesColors = ["", "#ff0000", "#00ff00", "#0000ff", "#ffff00", "#ff00ff", "#00ffff", "#fff", "#000"];
  const namesColors = ["default", "red", "green", "blue", "yellow", "magenta", "cyan", "white", "black"];

  const weatherData = ["humidity", "wind", "empty"];

  function showMainMenu() {
    let menu ={
      '': { 'title': 'Circles clock' },
      /*LANG*/'< Back': back,
      /*LANG*/'circle count': {
        value: "circleCount" in settings ? settings.circleCount : 3,
        min: 3,
        max : 4,
        step: 1,
        onchange: x => save('circleCount', x),
      },
      /*LANG*/'circle 1': ()=>showCircleMenu(1),
      /*LANG*/'circle 2': ()=>showCircleMenu(2),
      /*LANG*/'circle 3': ()=>showCircleMenu(3),
      /*LANG*/'circle 4': ()=>showCircleMenu(4),
      /*LANG*/'heartrate': ()=>showHRMenu(),
      /*LANG*/'steps': ()=>showStepMenu(),
      /*LANG*/'battery warn': {
        value: "batteryWarn" in settings ? settings.batteryWarn : 30,
        min: 10,
        max : 100,
        step: 10,
        format: x => {
          return x + '%';
        },
        onchange: x => save('batteryWarn', x),
      },
      /*LANG*/'show widgets': {
        value: "showWidgets" in settings ? settings.showWidgets : false,
        format: () => (settings.showWidgets ? 'Yes' : 'No'),
        onchange: x => save('showWidgets', x),
      },
      /*LANG*/'weather circle': {
        value: settings.weatherCircleData ? weatherData.indexOf(settings.weatherCircleData) : 0,
        min: 0, max: 2,
        format: v => weatherData[v],
        onchange: x => save('weatherCircleData', weatherData[x]),
      }
    };
    E.showMenu(menu);
  }

  function showHRMenu() {
    let menu = {
      '': { 'title': /*LANG*/'Heartrate' },
      /*LANG*/'< Back': ()=>showMainMenu(),
      /*LANG*/'minimum bpm': {
        value: "minHR" in settings ? settings.minHR : 40,
        min: 0,
        max : 250,
        step: 5,
        format: x => {
          return x;
        },
        onchange: x => save('minHR', x),
      },
      /*LANG*/'maximum bpm': {
        value: "maxHR" in settings ? settings.maxHR : 200,
        min: 20,
        max : 250,
        step: 5,
        format: x => {
          return x;
        },
        onchange: x => save('maxHR', x),
      },
      /*LANG*/'min. confidence': {
        value: "confidence" in settings ? settings.confidence : 0,
        min: 0,
        max : 100,
        step: 10,
        format: x => {
          return x;
        },
        onchange: x => save('confidence', x),
      },
    };
    E.showMenu(menu);
  }

  function showStepMenu() {
    let menu = {
      '': { 'title': /*LANG*/'Steps' },
      /*LANG*/'< Back': ()=>showMainMenu(),
      /*LANG*/'goal': {
        value: "stepGoal" in settings ? settings.stepGoal : 10000,
        min: 2000,
        max : 50000,
        step: 2000,
        format: x => {
          return x;
        },
        onchange: x => save('stepGoal', x),
      },
      /*LANG*/'distance goal': {
        value: "stepDistanceGoal" in settings ? settings.stepDistanceGoal : 8000,
        min: 2000,
        max : 30000,
        step: 1000,
        format: x => {
          return x;
        },
        onchange: x => save('stepDistanceGoal', x),
      },
      /*LANG*/'step length': {
        value: "stepLength" in settings ? settings.stepLength : 0.8,
        min: 0.1,
        max : 1.5,
        step: 0.01,
        format: x => {
          return x;
        },
        onchange: x => save('stepLength', x),
      }
    };
    E.showMenu(menu);
  }

  function showCircleMenu(circleId) {
    String circleName = "circle" + circleId;
    String colorKey = circleName + "color";
    let menu = {
      '': { 'title': /*LANG*/'Circle ' + circleId },
      /*LANG*/'< Back': ()=>showMainMenu(),
      /*LANG*/'data': {
        value: settings[circleName] ? valuesCircleTypes.indexOf(settings[circleName]) : 0,
        min: 0, max: valuesCircleTypes.length,
        format: v => namesCircleTypes[v],
        onchange: x => save(circleName, valuesCircleTypes[x]),
      },
      /*LANG*/'color': {
        value: settings[colorKey] ? valuesColors.indexOf(settings[colorKey]) : 0,
        min: 0, max: valuesColors.length,
        format: v => namesColors[v],
        onchange: x => save(colorKey, valuesColors[x]),
      },
    };
    E.showMenu(menu);
  }


  showMainMenu();
});