(function () {
  return (function (back, inApp, ret) {
    const isBangle1 = process.env.BOARD === 'BANGLEJS'

    function fillSettingsWithDefaults(settings) {
      if (isBangle1) {
        if (settings.mirrorScoreButtons == null) {
          settings.mirrorScoreButtons = false;
        }
        if (settings.keepDisplayOn == null) {
          settings.keepDisplayOn = true;
        }
      }
      if (settings.winSets == null) {
        settings.winSets = 2;
      }
      if (settings.setsPerPage == null) {
        settings.setsPerPage = 5;
      }
      if (settings.winScore == null) {
        settings.winScore = 21;
      }
      if (settings.enableTwoAhead == null) {
        settings.enableTwoAhead = true;
      }
      if (settings.enableMaxScore == null) {
        settings.enableMaxScore = true;
      }
      if (settings.maxScore == null) {
        settings.maxScore = 30;
      }
      if (settings.enableTennisScoring == null) {
        settings.enableTennisScoring = false;
      }

      if (settings.enableMaxScoreTiebreak == null) {
        settings.enableMaxScoreTiebreak = false;
      }
      if (settings.maxScoreTiebreakWinScore == null) {
        settings.maxScoreTiebreakWinScore = 6;
      }
      if (settings.maxScoreTiebreakEnableTwoAhead == null) {
        settings.maxScoreTiebreakEnableTwoAhead = true;
      }
      if (settings.maxScoreTiebreakEnableMaxScore == null) {
        settings.maxScoreTiebreakEnableMaxScore = false;
      }
      if (settings.maxScoreTiebreakMaxScore == null) {
        settings.maxScoreTiebreakMaxScore = 15;
      }

      return settings;
    }

    const fileName = 'score.json';
    let settings = require('Storage').readJSON(fileName, 1) || {};
    const offon = ['No', 'Yes'];

    let presetsFileName = 'score.presets.json';
    let presets = require('Storage').readJSON(presetsFileName);
    let presetNames = Object.keys(presets);

    let changed = false;

    function save(settings) {
      require('Storage').writeJSON(fileName, settings);
    }

    function setAndSave(key, value, notChanged) {
      if (!notChanged) {
        changed = true;
      }
      settings[key] = value;
      if (key === 'winScore' && settings.maxScore < value) {
        settings.maxScore = value;
      }
      save(settings);
    }

    settings = fillSettingsWithDefaults(settings);

    if (ret) {
      return settings;
    }

    const presetMenu = function (appMenuBack) {
      let ret = function (changed) { E.showMenu(appMenu(appMenuBack, changed ? 2 : null)); };
      let m = {
        '': {'title': 'Score Presets'},
        '< Back': ret,
      };
      for (let i = 0; i < presetNames.length; i++) {
        m[presetNames[i]] = (function (i) {
          return function() {
            changed = true;
            let mirrorScoreButtons = settings.mirrorScoreButtons;
            let keepDisplayOn = settings.keepDisplayOn;

            settings = fillSettingsWithDefaults(presets[presetNames[i]]);

            settings.mirrorScoreButtons = mirrorScoreButtons;
            settings.keepDisplayOn = keepDisplayOn;
            save(settings);
            ret(true);
          };
        })(i);
      }

      return m;
    };

    const appMenu = function (back, selected) {
      let m = {};

      m[''] = {'title': 'Score Settings'};
      if (selected != null) {
        m[''].selected = selected;
      }
      m['< Back'] = function () { back(settings, changed); };
      m['Presets'] = function () { E.showMenu(presetMenu(back)); };
      if (isBangle1) {
        m['Mirror Buttons'] = {
          value: settings.mirrorScoreButtons,
          format: m => offon[~~m],
          onchange: m => setAndSave('mirrorScoreButtons', m, true),
        };
        m['Keep display on'] = {
          value: settings.keepDisplayOn,
          format: m => offon[~~m],
          onchange: m => setAndSave('keepDisplayOn', m, true),
        }
      }
      m['Sets to win'] = {
        value: settings.winSets,
        min:1,
        onchange: m => setAndSave('winSets', m),
      };
      m['Sets per page'] = {
        value: settings.setsPerPage,
        min:1,
        max:5,
        onchange: m => setAndSave('setsPerPage', m),
      };
      m['Score to win'] = {
        value: settings.winScore,
        min:1,
        max: 999,
        onchange: m => setAndSave('winScore', m),
      };
      m['2-point lead'] = {
        value: settings.enableTwoAhead,
        format: m => offon[~~m],
        onchange: m => setAndSave('enableTwoAhead', m),
      };
      m['Maximum score?'] = {
        value: settings.enableMaxScore,
        format: m => offon[~~m],
        onchange: m => setAndSave('enableMaxScore', m),
      };
      m['Maximum score'] = {
        value: settings.maxScore,
        min: 1,
        max: 999,
        onchange: m => setAndSave('maxScore', m),
      };
      m['Tennis scoring'] = {
        value: settings.enableTennisScoring,
        format: m => offon[~~m],
        onchange: m => setAndSave('enableTennisScoring', m),
      };
      m['TB sets?'] = {
        value: settings.enableMaxScoreTiebreak,
        format: m => offon[~~m],
        onchange: m => setAndSave('enableMaxScoreTiebreak', m),
      };
      m['TB Score to win'] = {
        value: settings.maxScoreTiebreakWinScore,
        onchange: m => setAndSave('maxScoreTiebreakWinScore', m),
      };
      m['TB 2-point lead'] = {
        value: settings.maxScoreTiebreakEnableTwoAhead,
        format: m => offon[~~m],
        onchange: m => setAndSave('maxScoreTiebreakEnableTwoAhead', m),
      };
      m['TB max score?'] = {
        value: settings.maxScoreTiebreakEnableMaxScore,
        format: m => offon[~~m],
        onchange: m => setAndSave('maxScoreTiebreakEnableMaxScore', m),
      };
      m['TB max score'] = {
        value: settings.maxScoreTiebreakMaxScore,
        onchange: m => setAndSave('maxScoreTiebreakMaxScore', m),
      };

      return m;
    };

    const inAppMenu = function () {
      let m = {
        '': {'title': 'Score Menu'},
        '< Back': function () { back(settings, changed); },
        'Reset match': function () { back(settings, true); },
        'End current set': function () { inApp('end_set'); back(settings, changed); },
        'Configuration': function () { E.showMenu(appMenu(function () {
          E.showMenu(inAppMenu());
        })); },
      };

      return m;
    };

    if (inApp != null) {
      E.showMenu(inAppMenu());
    } else {
      E.showMenu(appMenu(back));
    }

  });
})();