use std::io::Write;

use base64::engine::general_purpose;
use magic_crypt::{new_magic_crypt, MagicCryptTrait};

pub fn decryt<I>(value: I, secret_key: String) -> anyhow::Result<String>
where
    I: AsRef<str>,
{
    let mc = new_magic_crypt!(&secret_key, 256);
    Ok(mc.decrypt_base64_to_string(value)?)
}

pub fn compute_key(from: String) -> String {
    let mut enc = base64::write::EncoderStringWriter::new(&general_purpose::URL_SAFE_NO_PAD);
    enc.write_all(from.as_bytes()).unwrap();

    enc.into_inner()
}

#[cfg(test)]
mod tests {
    use super::*;

    #[tokio::test]
    async fn test_compute_key_async() {
        let input = "test string".to_string();

        let encoded = compute_key(input);

        assert_eq!(encoded, "base64_encoded_string");
    }
}