(() => {
  const state = {
    music: "stop",

    musicInfo: {
      artist: "",
      album: "",
      track: ""
    },

    scrollPos: 0
  };

  function settings() {
    let settings = require('Storage').readJSON("gbridge.json", true) || {};
    if (!("showIcon" in settings)) {
      settings.showIcon = true;
    }
    return settings
  }

  function gbSend(message) {
    Bluetooth.println("");
    Bluetooth.println(JSON.stringify(message));
  }

  function handleNotificationEvent(event) {
    require("notify").show(event);
    Bangle.buzz();
  }

  function handleMusicStateUpdate(event) {
    const changed = state.music === event.state
    state.music = event.state

    if (state.music === "play") {
      require("notify").show({size:40, render:y => {
        g.setColor(-1);
        g.drawImage(require("heatshrink").decompress(atob("jEYwILI/EAv/8gP/ARcMgOAASN8h+A/kfwP8n4CD/E/gHgjg/HA=")), 8, y + 8);
        g.setFontAlign(-1, -1);
        var x = 40;
        g.setFont("4x6", 2).drawString(state.musicInfo.artist, x, y + 8);
        g.setFont("6x8", 1).drawString(state.musicInfo.track, x, y + 22);
      }});
    }

    if (state.music === "pause") {
      require("notify").hide();
    }
  }

  function handleCallEvent(event) {
    if (event.cmd === "accept") {
      require("notify").show({
        size: 55, title: event.name,
        body: event.number, icon:require("heatshrink").decompress(atob("jEYwIMJj4CCwACJh4CCCIMOAQMGAQMHAQMDAQMBCIMB4PwgHz/EAn4CBj4CBg4CBgACCAAw="))});
      Bangle.buzz();
    }
  }

  function handleFindEvent(event) {
    if (state.find) {
      clearInterval(state.find);
      delete state.find;
    }
    if (event.n)
      state.find = setInterval(_=>{
        Bangle.buzz();
        setTimeout(_=>Bangle.beep(), 1000);
      },2000);
  }

  var _GB = global.GB;
  global.GB = (event) => {
    switch (event.t) {
      case "notify":
        handleNotificationEvent(event);
        break;
      case "musicinfo":
        state.musicInfo = event;
        break;
      case "musicstate":
        handleMusicStateUpdate(event);
        break;
      case "call":
        handleCallEvent(event);
        break;
      case "find":
        handleFindEvent(event);
        break;
    }
    if(_GB)setTimeout(_GB,0,event);
  };

  Bangle.on("swipe", (dir) => {
    if (state.music === "play") {
      const command = dir > 0 ? "next" : "previous"
      gbSend({ t: "music", n: command });
    }
  });

  function draw() {
    g.setColor(-1);
    if (NRF.getSecurityStatus().connected)
      g.drawImage(require("heatshrink").decompress(atob("i0WwgHExAABCIwJCBYwJEBYkIBQ2ACgvzCwoECx/z/AKDD4WD+YLBEIYKCx//+cvnAKCBwU/mc4/8/HYv//Ev+Y4EEAePn43DBQkzn4rCEIoABBIwKHO4cjmczK42I6mqlqEEBQeIBQaDED4IgDUhi6KaBbmIA==")), this.x + 1, this.y + 1);
    else
      g.drawImage(require("heatshrink").decompress(atob("i0WwQFC1WgAgYFDAgIFClQFCwEK1W/AoIPB1f+CAMq1f7/WqwQPB/fq1Gq1/+/4dC/2/CAIaB/YbBAAO///qAoX/B4QbBDQQ7BDQQrBAAWoIIIACIIIVC0ECB4cACAZiBAoRtCAoIDBA")), this.x + 1, this.y + 1);
  }

  function changedConnectionState() {
    WIDGETS["gbridgew"].draw();
    g.flip(); // turns screen on
  }

  function reload() {
    NRF.removeListener("connect", changedConnectionState);
    NRF.removeListener("disconnect", changedConnectionState);
    if (settings().showIcon) {
      WIDGETS["gbridgew"].width = 24;
      WIDGETS["gbridgew"].draw = draw;
      NRF.on("connect", changedConnectionState);
      NRF.on("disconnect", changedConnectionState);
    } else {
      WIDGETS["gbridgew"].width = 0;
      WIDGETS["gbridgew"].draw = ()=>{};
    }
  }

  WIDGETS["gbridgew"] = {area: "tl", width: 24, draw: draw, reload: reload};
  reload();

  function sendBattery() {
    gbSend({ t: "status", bat: E.getBattery() });
  }

  NRF.on("connect", () => setTimeout(sendBattery, 2000));
  setInterval(sendBattery, 10*60*1000);
  sendBattery();
})();