use crate::utils::{trim_newline};
///  encrypt & decrypt content with `enc_file` using `XChaCha20Poly1305` and random nonce
///```rust    
///  let texto = String::from("Esto es una prueba");
///  println!("{}",&texto);
///  let ky = String::from("an example very very secret key.");
///  let key= ky.as_str(); //Plaintext to encrypt
///  let res_enc = encrypt(&texto,key);
///  println!("encripty: {}",&res_enc);
///  let res_dec = decrypt(&res_enc,key);
///  println!("decrypt: {}",&res_dec);
///```
#[must_use]
pub fn encrypt(text: &str, key: &str) -> String {
  if key.is_empty() {
    return text.to_string();
  }
  //let txt = format!(r#"{}"#, text); //Plaintext to encrypt
  let text_vec = text.as_bytes().to_vec();
  //let key: &str = "an example very very secret key."; //Key will normally be chosen from keymap and provided to the encrypt_chacha() function
  //let text_vec: Vec<u8> = txt_char.to_vec(); //Convert text to Vec<u8>
  //Ciphertext stores the len() of encrypted content, the nonce and the actual ciphertext using bincode
  match enc_file::encrypt_chacha(text_vec, key) {
    //encrypt vec<u8>, returns result(Vec<u8>)
    Ok(ciphertext) => base64::encode(&ciphertext),
    Err(e) => {
      println!("Error encrypt: {}", e);
      String::from("")
    }
  }
}
/// decrypt content with `enc_file` using `XChaCha20Poly1305` and random nonce
#[must_use]
pub fn decrypt(text: &str, key: &str) -> String {
  if key.is_empty() {
    return text.to_string();
  }
  let mut input = text.to_owned();
  trim_newline(&mut input);
  match base64::decode(&input) {
    Ok(inpt_text) => match enc_file::decrypt_chacha(inpt_text, key) {
      Ok(res) => match String::from_utf8(res) {
        Ok(result) => result,
        Err(e) => {
          println!("Error utf8 decode: {}", e);
          String::from("")
        }
      },
      Err(e) => {
        println!("Error decrypt: {}", e);
        String::from("")
      }
    },
    Err(e) => {
      println!("Error base64 decode: {}", e);
      String::from("")
    }
  }
  // println!("text: {} plain: {}",format!("{:?}", &text), format!("{:?}", plaintext)); //Check that text == plaintext
}