#!/usr/bin/env node
let uhk = require('./uhk');
let [endpointIn, endpointOut] = uhk.getUsbEndpoints();

let ledMatrixSize = 144;
let ledCountToUpdatePerCommand = ledMatrixSize / 3;

let state = 1;

let ledsLeft = new Buffer(ledMatrixSize);
let ledsRight = new Buffer(ledMatrixSize);
ledsLeft.fill(0xff)
ledsRight.fill(0xff)

let ledIndex = 0;
let matrixId = 0;
let ledCommandId = 0;
let letterIdx = 0;

function updateLeds() {
    let buffer = Buffer.concat([
        new Buffer([
            uhk.usbCommands.writeLedDriver,
            matrixId ? uhk.rightLedDriverAddress : uhk.leftLedDriverAddress,
            ledCountToUpdatePerCommand,
            0x24 + ledIndex
        ]),
        (matrixId ? ledsRight : ledsLeft).slice(ledIndex, ledIndex + ledCountToUpdatePerCommand)
    ]);
    console.log('iter: '+letterIdx+' out:', uhk.bufferToString(buffer))
    endpointOut.transfer(buffer, function(err) {
        if (err) {
            console.error("USB error: %s", err);
            process.exit(1);
        }
        endpointIn.transfer(64, function(err2, receivedBuffer) {
            if (err2) {
                console.error("USB error: %s", err2);
                process.exit(2);
            }

            ledIndex += ledCountToUpdatePerCommand;
            if (ledIndex >= ledMatrixSize) {
                ledIndex = 0;
                matrixId = matrixId ? 0 : 1;
            }

            updateLeds();
        })
    });
}

updateLeds();

let lettersLeds = {
    0: [1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1],
    1: [0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0],
    2: [1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1],
    3: [1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1],
    4: [0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0],
    5: [1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1],
    6: [1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1],
    7: [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0],
    8: [1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1],
    9: [1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1],
    A: [1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0],
    B: [1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1],
    C: [1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1],
    D: [1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1],
    E: [1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1],
    F: [1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0],
    G: [1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1],
    H: [0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0],
    I: [0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
    J: [0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1],
    K: [0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0],
    L: [0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1],
    M: [0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0],
    N: [0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0],
    O: [1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1],
    P: [1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0],
    Q: [1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1],
    R: [1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 0],
    S: [1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1],
    T: [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0],
    U: [0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1],
    V: [0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0],
    W: [0, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0],
    X: [0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0],
    Y: [0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0],
    Z: [1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1],
}

let iconLedsToLedMatrix = [0x08, 0x09, 0x0a];
let layerLedsToLedMatrix = [0x0d, 0x1d, 0x2d];

let characterLedsToLedMatrix = [
    [0x0b, 0x1b, 0x29, 0x2a, 0x2b, 0x0c, 0x1c, 0x28, 0x1a, 0x2c, 0x38, 0x39, 0x18, 0x19],
    [0x3a, 0x4a, 0x58, 0x59, 0x5a, 0x3b, 0x4b, 0x4c, 0x49, 0x5b, 0x5c, 0x68, 0x3c, 0x48],
    [0x69, 0x79, 0x7c, 0x88, 0x89, 0x6a, 0x7a, 0x7b, 0x78, 0x8a, 0x8b, 0x8c, 0x6b, 0x6c]
]

function setIcons(iconStates) {
    for (let i=0; i<iconStates.length; i++) {
        ledsLeft[iconLedsToLedMatrix[i]] = iconStates[i] ? 0xff : 0;
    }
}

function setLayerLed(layerIdx) {
    for (let i=0; i<layerLedsToLedMatrix.length; i++) {
        ledsLeft[layerLedsToLedMatrix[i]] = i == layerIdx ? 0xff : 0;
    }
}

function setLetter(letterLeds, position) {
    for (let i=0; i<14; i++) {
        ledsLeft[characterLedsToLedMatrix[position][i]] = letterLeds[i] ? 0xff : 0;
    }
}

let digitsAndLetters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';

let layerLedIdx = 0;
setInterval(function() {
setIcons([1, 1, 1]);
    for (let i=0; i<3; i++) {
        setLetter(lettersLeds[digitsAndLetters[(letterIdx+i) % digitsAndLetters.length]], i);
    }
    setLayerLed(layerLedIdx);
    if (++letterIdx >= digitsAndLetters.length) {
        letterIdx = 0;
    }
    layerLedIdx = ++layerLedIdx % layerLedsToLedMatrix.length;
}, 200);