bitSerialization.js

// This is strictly for aesthetic purposes - it can be ignored
const mask = "01101001010010100111101010001110101011010101011110100101010101010101010010101010011010101"
export const serializeSettings = (settings) => {
    const vals = []

    vals.push(settings.language === 'English')
    vals.push(settings.ordering === 'Alphabetical')
    vals.push(settings.keyboardInterface.level > 1)
    vals.push(settings.keyboardInterface.level > 0)
    for (const animal of settings.content) {
        vals.push(animal.active)
    }
    let arr = BitArray.from(vals)
    // console.log('Orig arr', arr)
    arr = arr['^'](BitArray.from(mask.slice(0, vals.length)))
    // console.log('Masked arr', arr)
    
    const encoded = encode(arr.buffer).replaceAll("+", "-").replaceAll("/", "_")
    return encoded
}

export const deserializeSettings = (encoded) => {
    const buffer = decode(encoded.replaceAll("-", "+").replaceAll("_", "/"))
    const vals = []
    for(const b of new Uint8Array(buffer)) {
        for (let i = 0; i < 8; i++) {
            vals.push(!!(b & (1 << i)))
        }
    }
    let arr = BitArray.from(vals)
    //console.log('Masked arr', arr)
    arr = arr['^'](BitArray.from(mask.slice(0, vals.length)))
    //console.log('Orig arr', arr)
    const settings = {

    }

    const itr = arr.values()
    const v = () => itr.next().value
    settings.language = v() ? 'English' : 'Japanese'
    settings.ordering = v() ? 'Alphabetical' : 'Shuffle'
    const targetLevel = v() * 2 + v()
    settings.keyboardInterface = keyboardOptions.find(o => o.level === targetLevel)
    settings.content = Object.values(animals).map(animal => ({...animal, active: v()}))
    
    return settings    
}