import { readFileSync, writeFileSync } from 'fs';
import { CartData, writeCart } from 'p8-data-cart';

const shapes = [
    // Square shape
    [

        -0.3, -0.3,
        0.3, -0.3,
        0.3, 0.3,
        -0.3, 0.3
    ],

    // Star shape
    [
        -0.33867, -0.11005,
        -0.07969, -0.11005,
        0.00000, -0.35553,
        0.07969, -0.11005,
        0.33867, -0.11005,
        0.12912, 0.04222,
        0.20885, 0.28781,
        0.00000, 0.13605,
        -0.20885, 0.28781,
        -0.12912, 0.04222
    ],
    // Heart shape
    [
        0.27532, -0.04442,
        0.25741, -0.01513,
        0.23889, 0.01376,
        0.21978, 0.04224,
        0.20008, 0.07030,
        0.17980, 0.09794,
        0.15894, 0.12513,
        0.13751, 0.15189,
        0.11553, 0.17819,
        0.09298, 0.20402,
        0.06990, 0.22938,
        0.04627, 0.25427,
        0.02210, 0.27866,
        0.01915, 0.28138,
        0.01593, 0.28362,
        0.01250, 0.28539,
        0.00891, 0.28668,
        0.00520, 0.28750,
        0.00144, 0.28783,
        -0.00234, 0.28768,
        -0.00608, 0.28706,
        -0.00973, 0.28595,
        -0.01324, 0.28435,
        -0.01657, 0.28227,
        -0.01966, 0.27970,
        -0.01975, 0.27962,
        -0.01983, 0.27953,
        -0.01992, 0.27945,
        -0.02001, 0.27936,
        -0.02010, 0.27927,
        -0.02019, 0.27919,
        -0.02027, 0.27910,
        -0.02036, 0.27901,
        -0.02044, 0.27893,
        -0.02053, 0.27884,
        -0.02062, 0.27875,
        -0.02070, 0.27866,
        -0.04491, 0.25428,
        -0.06860, 0.22940,
        -0.09174, 0.20404,
        -0.11433, 0.17821,
        -0.13637, 0.15191,
        -0.15785, 0.12516,
        -0.17875, 0.09796,
        -0.19909, 0.07032,
        -0.21884, 0.04226,
        -0.23800, 0.01377,
        -0.25656, -0.01512,
        -0.27452, -0.04442,
        -0.29418, -0.09758,
        -0.29962, -0.14669,
        -0.29277, -0.19072,
        -0.27559, -0.22866,
        -0.25001, -0.25950,
        -0.21800, -0.28221,
        -0.18148, -0.29578,
        -0.14242, -0.29919,
        -0.10275, -0.29142,
        -0.06443, -0.27146,
        -0.02939, -0.23829,
        0.00040, -0.19089,
        0.03020, -0.23829,
        0.06523, -0.27146,
        0.10355, -0.29142,
        0.14322, -0.29919,
        0.18228, -0.29578,
        0.21880, -0.28221,
        0.25082, -0.25950,
        0.27639, -0.22866,
        0.29357, -0.19072,
        0.30042, -0.14669,
        0.29499, -0.09758
    ]
];

function buildPayload(shapes: number[][]) {
    const payload: number[] = [];

    payload.push(shapes.length); // Shape count

    // Shape offset table
    let offset = 1 + shapes.length; // Shape count byte + offset table size
    for (const shapeData of shapes) {
        payload.push(offset);
        offset += 1 + shapeData.length; // 1 byte for point count + length of point data
    }

    // Shape point data
    for (const shapeData of shapes) {

        const pointCount = shapeData.length / 2;
        payload.push(pointCount);

        for (const shapePointComponent of shapeData) {
            // Center points around 0.5, 0.5 and scale range -1 - 1 to 0 - 255
            const ratio = (255 - 0) / (1 - -1)
            const centeredComponent = (shapePointComponent + 1);
            const scaledComponent = Math.round(centeredComponent * ratio);
            payload.push(scaledComponent);
        }
    }

    return new Uint8Array(payload);
}

const luaScript = readFileSync('shapes.lua', 'utf-8');
const payload = buildPayload(shapes);

const cartData = new CartData();
cartData.data.set(payload);
cartData.lua = luaScript;

const cartString = writeCart(cartData);
writeFileSync('shapes.p8', cartString);