import { base64 } from "./base64"

/**
 * BASE64 URL 格式
 * https://en.wikipedia.org/wiki/Base64#RFC_4648
 * 会替换 BASE 中 URL 不兼容的字符
 */
export const base64url = {
    decode(data: any): string {
        data = data.replace(/\-/g, "+").replace(/_/g, "/")
        return base64.decode(data)
    },

    encode(data: any): string {
        let text = base64.encode(data)
        text = text.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_")
        return text
    },

    /** 转换现成的 base64 字符串*/
    encodeByBase64(base64: string): string {
        return base64.replace(/=/g, "").replace(/\+/g, "-").replace(/\//g, "_")
    },
}

const BASE64URL = base64url
export { BASE64URL }