SP24 - image deserialize node.js

const base = require('base-x');

const baser62 = base("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");

const min = 0x00000000;
const max = 0xffffffff;

function getRandomInt() {
    return Math.floor(Math.random() * (max - min)) + min;
}

class BufferOffset {
    constructor() {
        this.size = 0;
        this.data = [];
    }

    write(length, data) {
        this.data.push({length, data});
        this.size += length;
    }

    make() {
        let offset = 0;
        const buffer = Buffer.allocUnsafe(this.size);
        for (let {data, length} of this.data) {
            buffer.writeUIntBE(data, offset, length);
            offset += length;
        }

        return buffer;
    }
}

// b.write(4, getRandomInt()); // Random
// b.write(4, Date.now() / 1000); // Creation timestamp
// b.write(1, 0x55); // Object type
// b.write(1, 0x44); // Object localization
// b.write(3, 0x333333); // Application Id
// b.write(2, 0x1111); // Image width
// b.write(2, 0x2222); // Image height
// b.write(2, 0x6666); // Provider Id
// b.write(4, 0x77777777); // Product creation timestamp
// b.write(5, 0x8888888888); // Product random
// b.write(3, 0x999999); // Product counter
// b.write(4, getRandomInt()); // Original image random
// b.write(4, Date.now() / 1000); // original image timestamp
// b.write(2, 0x2222); // Original image width
// b.write(2, 0x6666); // Original image height

// b.write(1, 0x11); // Object type
// b.write(1, 0x22); // Object localization
//
// b.write(4, Date.now() / 1000); // Creation timestamp
// b.write(4, getRandomInt()); // Random
// b.write(4, getRandomInt()); // Couter
//
// b.write(2, 0x2222); // Original image width
// b.write(2, 0x6666); // Original image height
//
// b.write(1, 0x11); // Object type
// b.write(1, 0x22); // Object localization
//
// b.write(4, Date.now() / 1000); // Creation timestamp
// b.write(4, getRandomInt()); // Random
// b.write(4, getRandomInt()); // Couter
//
// b.write(3, 0x333333); // Application Id
// b.write(2, 0x4444); // Provider Id
// b.write(2, 0x5555); // Image width
// b.write(2, 0x6666); // Image height
//
// b.write(4, 0x77777777); // Product creation timestamp
// b.write(4, 0x88888888); // Product random
// b.write(4, 0x99999999); // Product counter

// const b = new BufferOffset();
// b.write(2, 0x1111); // Object type
// b.write(2, 0x2222); // Object localization
// b.write(2, 0x4444); // Wholesaler Id
// b.write(2, 0x5555); // Image width
// b.write(2, 0x6666); // Image height
// b.write(4, 0x21232f29); // Image checksum
// b.write(4, 0x7a57a5a7); // Image checksum
// b.write(4, 0x43894a0e); // Image checksum
// b.write(4, 0x4a801fc3); // Image checksum
// const buffer = b.make();


const b = new BufferOffset();

b.write(1, 0x11); // Object type
// b.write(2, 0x5555); // Thumb image width
// b.write(2, 0x6666); // Thumb image height
b.write(2, 0x2222); // Object localization
b.write(2, 0x4444); // Wholesaler Id
b.write(2, 0x5555); // Image width
b.write(2, 0x6666); // Image height
b.write(4, 0x21232f29); // Image checksum
b.write(4, 0x7a57a5a7); // Image checksum
b.write(4, 0x43894a0e); // Image checksum
b.write(4, 0x4a801fc3); // Image checksum
b.write(1, 0x11); // File extension
const buffer = b.make();

// 21232f29 7a57a5a7 43894a0e 4a801fc3
// d033e22ae348aeb5660fc2140aec35850c4da997

console.log(b.size);
console.log(buffer);
const result = baser62.encode(buffer);
console.log(result.length);
console.log(result);

const wholesale_yns_products = {
    images: [
        {
            _id: "4a801fc343894a0e7a57a5a7",
        }
    ]
};

const app_products = {
    images: [
        {
            _id: "4a801fc343894a0e7a57a5a7",
        }
    ]
};

const app_images = {
    _id: "4a801fc343894a0e7a57a5a7",
    kind: "storage",
    primary: {
        bucket: "bsB2dbx82Ao8e128eKcSF6CPPitiPXZF",
    },
    thumbs: [
        {
            bucket: "eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt",
        },
        {
            bucket: "eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt",
        },
    ],
    source: {
        id: 101,
        kind: "wholesaler",
        url: "https://yns.pl/id.jpg"
    },
};

const deserialized = {
    type: 0x00,
    kind: "wholesaler-product-image",
    storage: {
        localization: "waw1",
        auth: "d40b57d4f91d4d1fb3722913c1d03c9b"
    },
    source: {
        id: 101,
        type: "wholesaler",
    },
    url: "https://storage.waw1.cloud.ovh.net/v1//ws0064/wpi/eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt.png",
    bucket: "eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt",
    width: 1600,
    height: 1200,
    checksum: "21232f297a57a5a743894a0e4a801fc3"
};

const deserialized_thumb = {
    type: 0x00,
    kind: "wholesaler-product-image-thumb",
    storage: {
        localization: "waw1",
        auth: "d40b57d4f91d4d1fb3722913c1d03c9b"
    },
    source: {
        id: 101,
        type: "wholesaler",
    },
    url: "https://storage.waw1.cloud.ovh.net/v1//ws0064/wpi/eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt.png",
    bucket: "eM5mjMfPXL8nJFkgNgdVj7uaijFrL8YcxQKHVeZt",
    width: 1600,
    height: 1200,
    checksum: "21232f297a57a5a743894a0e4a801fc3"
};


// 0x00 = null
// 0x10 = null
// 0x01 = static images created by developers
// 0x11 = static images thumbs created by developers
// 0x02 = static images created by client
// 0x12 = static images thumbs by client
// 0x03 = example products images
// 0x13 = example products thumbs
// 0x04 = products images
// 0x14 = products thumbs
// 0x15 = integrations images
// 0x15 = integrations thumbs
// 0x16 = integrations images
// 0x16 = integrations thumbs