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use r2d2;
use std::cell::RefCell;

use crate::cluster::{GetCompressor, GetConnection};
use crate::error;
use crate::frame::{Frame, IntoBytes};
use crate::query::{QueryParams, QueryParamsBuilder, QueryValues};
use crate::transport::CDRSTransport;
use crate::types::CBytesShort;

use super::utils::{prepare_flags, send_frame};

pub type PreparedQuery = CBytesShort;

pub trait ExecExecutor<
  T: CDRSTransport + 'static,
  M: r2d2::ManageConnection<Connection = RefCell<T>, Error = error::Error> + Sized,
>: GetConnection<T, M> + GetCompressor<'static>
{
  fn exec_with_params_tw(
    &self,
    prepared: &PreparedQuery,
    query_parameters: QueryParams,
    with_tracing: bool,
    with_warnings: bool,
  ) -> error::Result<Frame>
  where
    Self: Sized,
  {
    let flags = prepare_flags(with_tracing, with_warnings);
    let options_frame = Frame::new_req_execute(prepared, query_parameters, flags).into_cbytes();

    send_frame(self, options_frame)
  }

  fn exec_with_params(
    &self,
    prepared: &PreparedQuery,
    query_parameters: QueryParams,
  ) -> error::Result<Frame>
  where
    Self: Sized,
  {
    self.exec_with_params_tw(prepared, query_parameters, false, false)
  }

  fn exec_with_values_tw<V: Into<QueryValues>>(
    &self,
    prepared: &PreparedQuery,
    values: V,
    with_tracing: bool,
    with_warnings: bool,
  ) -> error::Result<Frame>
  where
    Self: Sized,
  {
    let query_params_builder = QueryParamsBuilder::new();
    let query_params = query_params_builder.values(values.into()).finalize();
    self.exec_with_params_tw(prepared, query_params, with_tracing, with_warnings)
  }

  fn exec_with_values<V: Into<QueryValues>>(
    &self,
    prepared: &PreparedQuery,
    values: V,
  ) -> error::Result<Frame>
  where
    Self: Sized,
  {
    self.exec_with_values_tw(prepared, values, false, false)
  }

  fn exec_tw(
    &self,
    prepared: &PreparedQuery,
    with_tracing: bool,
    with_warnings: bool,
  ) -> error::Result<Frame>
  where
    Self: Sized,
  {
    let query_params = QueryParamsBuilder::new().finalize();
    self.exec_with_params_tw(prepared, query_params, with_tracing, with_warnings)
  }

  fn exec(&mut self, prepared: &PreparedQuery) -> error::Result<Frame>
  where
    Self: Sized,
  {
    self.exec_tw(prepared, false, false)
  }
}