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use base64::Engine;
use base64::engine::general_purpose::STANDARD;

/// 加密
pub fn encode(string: String) -> String {
    STANDARD.encode(string)
}

/// 加密-Base64URL
pub fn url_encode(string: String) -> String {
    let base64 = encode(string);
    let base64 = base64.replace("=", "");
    let base64 = base64.replace("+", "-");
    let base64 = base64.replace("/", "_");
    base64
}

/// 加密-Base64URL
pub fn url_encode_u8(string: &[u8]) -> String {
    let base64 = STANDARD.encode(string);
    let base64 = base64.replace("=", "");
    let base64 = base64.replace("+", "-");
    let base64 = base64.replace("/", "_");
    base64
}

/// 解密
pub fn decode(base64: String) -> String {
    if base64.is_empty() {
        return "".to_string();
    }
    match STANDARD.decode(base64.clone()) {
        Ok(e) => {
            let tt = String::from_utf8_lossy(&*e);
            tt.to_string()
        }
        Err(_e) => {
            return base64;
        }
    }
}

/// url解密
pub fn url_decode(base64: String) -> String {
    let base64 = format!("{}==", base64);
    let base64 = base64.replace("-", "+");
    let base64 = base64.replace("_", "/");
    decode(base64)
}