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use crate::frame::frame_errors::ParseError;
use bytes::Bytes;

use crate::{
    frame::request::{query, RequestOpcode, SerializableRequest},
    frame::types,
};

use super::{query::QueryParameters, DeserializableRequest};

#[cfg_attr(test, derive(Debug, PartialEq, Eq))]
pub struct Execute<'a> {
    pub id: Bytes,
    pub parameters: query::QueryParameters<'a>,
}

impl SerializableRequest for Execute<'_> {
    const OPCODE: RequestOpcode = RequestOpcode::Execute;

    fn serialize(&self, buf: &mut Vec<u8>) -> Result<(), ParseError> {
        // Serializing statement id
        types::write_short_bytes(&self.id[..], buf)?;

        // Serializing params
        self.parameters.serialize(buf)?;
        Ok(())
    }
}

impl<'e> DeserializableRequest for Execute<'e> {
    fn deserialize(buf: &mut &[u8]) -> Result<Self, ParseError> {
        let id = types::read_short_bytes(buf)?.to_vec().into();
        let parameters = QueryParameters::deserialize(buf)?;

        Ok(Self { id, parameters })
    }
}