interface Config {
    useUnicode?: boolean
}

const styleMap: Record<string, string> = {}
let index = 0

const generateUniqueStyleHash = (
    value: string,
    config: Config = {
        useUnicode: false
    }
) => {
    if (styleMap[value]) return styleMap[value]

    let { useUnicode } = config

    let hash = ''
    let localindex = index

    let genDivisor = () => 52 ** hash.length
    let genDecrement = () => 52 ** (hash.length + 1)

    if (useUnicode) {
        // Skip single and double quotation
        let pointer = parseInt(
            `0x${28 + Object.getOwnPropertyNames(styleMap).length}`
        )
        hash = String.fromCodePoint(pointer)
    } else {
        while (localindex >= 0) {
            let charCode = Math.floor(localindex / genDivisor()) % 52

            localindex = localindex - genDecrement()

            // a-z and A-Z otherwise start new className
            if (charCode < 26) hash += String.fromCharCode(97 + charCode)
            else hash += String.fromCharCode(65 + charCode - 26)
        }

        hash = hash.split('').reverse().join('')
    }

    styleMap[value] = hash
    index++

    return hash
}

const generateUnicode = (value: string) =>
    generateUniqueStyleHash(value, { useUnicode: true })

// @ts-ignore
export = generateUniqueStyleHash
export default generateUniqueStyleHash