load('api_rpc.js');
load("api_neopixel.js");
load("api_file.js");


let colors = {
  black: {r:0, g:0, b:0},
  red: {r:255, g:0, b:0},
  green: {r:0, g:255, b:0},
  blue: {r:0, g:0, b:255},
  yellow: {r:255, g:255, b:0},
  orange: {r:255, g:127, b:0},
  purple: {r:255, g:0, b:255},
  white: {r:255, g:255, b:255},
  dimmedWhite: {r:50, g:50, b:50}
};


let LightAnimation = {
  numberOfBulbs: 11,
  ledPin: 2,
  running: false,
  mode: "demo",
  generalBrightnessDivider: 3,
  colorSequence: [
    colors.dimmedWhite,
    colors.red,
    colors.green,
    colors.blue,
    colors.yellow,
    colors.orange,
    colors.purple,
    colors.red,
    colors.red,
    colors.green,
    colors.green,
    colors.white,
    colors.white
  ]
};

// Add RPC handlers

RPC.addHandler('HouseLightning.Start', function(args) {
  LightAnimation.running = true;
  LightAnimation.mode = "run";
  return {result: 'ok'};
}, null);

RPC.addHandler('HouseLightning.Stop', function(args) {
  LightAnimation.running = true; // first we want to turn off LEDs, thus needs stop-mode
  LightAnimation.mode = "stop";
  return {result: 'ok'};
}, null);

RPC.addHandler('HouseLightning.DemoMode', function(args) {
  LightAnimation.mode = "demo";
  LightAnimation.running = true;
  return {result: 'ok'};
}, null);

RPC.addHandler('HouseLightning.CycleMode', function(args) {
  LightAnimation.mode = "cycle";
  LightAnimation.running = true;
  return {result: 'ok'};
}, null);

RPC.addHandler('HouseLightning.GetAnimationConfig', function(args) {
  return LightAnimation.animationConfig;
}, null);

RPC.addHandler('HouseLightning.SetAnimationConfig', function(args) {
  if (args !== undefined && args.config !== undefined) {
    LightAnimation.animationConfig = JSON.parse(args.config);
    if (LightAnimation.animationConfig.comment === undefined) {
      return {error: 'config is incomplete or invalid / comment not found'};
    }
    if (LightAnimation.animationConfig.lights === undefined) {
      return {error: 'config is incomplete or invalid / lights definition not found'};
    }
    if (LightAnimation.animationConfig.lights[0] === undefined) {
      return {error: 'config is incomplete or invalid / lights not an array?'};
    }
    let i;
    for (i=0; i<LightAnimation.animationConfig.lights.length; ++i) {
      if (LightAnimation.animationConfig.lights[i].level === undefined) {
        return {error: 'config is incomplete or invalid / level missing in lights definition'};
      }
      if (LightAnimation.animationConfig.lights[i].room === undefined) {
        return {error: 'config is incomplete or invalid / room missing in lights definition'};
      }
      if (LightAnimation.animationConfig.lights[i].on === undefined) {
        return {error: 'config is incomplete or invalid / on missing in lights definition'};
      }
      if (LightAnimation.animationConfig.lights[i].on[0] === undefined) {
        return {error: 'config is incomplete or invalid / on not an array in lights definition?'};
      }
      if (LightAnimation.animationConfig.lights[i].on.length !== 3) {
        return {error: 'config is incomplete or invalid / on must have 3 elements for R/G/B in lights definition?'};
      }
      if (LightAnimation.animationConfig.lights[i].id === undefined) {
        return {error: 'config is incomplete or invalid / id missing in lights definition'};
      }
    }
    return {result: 'ok'};
  } else {
    return {error: 'parameter config is required'};
  }
}, null);

function runNeopixel(strip, shiftBy) {
  let i=0, colorIndex=0, color;
  
  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
    colorIndex = shiftBy % LightAnimation.colorSequence.length;
    color = LightAnimation.colorSequence[colorIndex];
    strip.setPixel(i, color.r/LightAnimation.generalBrightnessDivider, color.g/LightAnimation.generalBrightnessDivider, color.b/LightAnimation.generalBrightnessDivider);
    // print("runNeo shift =", shiftBy, ", colorIndex =", colorIndex, ", r =", color.r, ", g =", color.g, ", b =", color.b);
    shiftBy++;
  }
  strip.show();
}

// initialize module
let configString = "";
configString = File.read("lights.cfg");
if (configString === "" || configString === null) configString = "***default***";
// print("configString = ", configString);
LightAnimation.animationConfig = JSON.parse(configString);


// initialize neoPixel
let colorOrder = NeoPixel.GRB;
let strip = NeoPixel.create(LightAnimation.ledPin, LightAnimation.numberOfBulbs, colorOrder);
strip.clear();
strip.show();
// initialize test pattern
let i = 0;
for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
  if (i % 2) {
    strip.setPixel(i, 80, 20, 20);
  } else {
    strip.setPixel(i, 20, 80, 20);
  }
}
strip.show();

let shiftAnimation = 1;

Timer.set(1990 /* msec */, true /* repeat */, function() {
  if (LightAnimation.running) {
    if (LightAnimation.mode === "demo") {
      runNeopixel(strip, shiftAnimation);
      shiftAnimation++;
      print("*** demo-mode, next shift=", shiftAnimation);
    } else if (LightAnimation.mode === "stop") {
      strip.clear();
      strip.show();
      LightAnimation.running = false;
    } else print("*** no-ack, mode =", LightAnimation.mode);
  } else print("*** stopped");
}, null);