// Base64 UTF-8 Encode/Decode Utility Functions
// Source: https://www.digitalocean.com/community/tutorials/how-to-encode-and-decode-strings-with-base64-in-javascript


module.exports = {
    // Function to encode a UTF-8 string to Base64
    utf8ToBase64: (str) => {
        const encoder = new TextEncoder()
        const data = encoder.encode(str)

        const binaryString = String.fromCharCode.apply(null, data)
        return btoa(binaryString)
    },

    // Function to decode a Base64 string to UTF-8
    base64ToUtf8: (b64) => {
        const binaryString = atob(b64)
        // Create a Uint8Array from the binary string.
        const bytes = new Uint8Array(binaryString.length)
        for (let i = 0 ; i < binaryString.length ; i++) {
            bytes[i] = binaryString.charCodeAt(i)
        }
        const decoder = new TextDecoder()
        return decoder.decode(bytes)
    }
}