use crate::repositories;
use beteran_common_rust as bcr;
use beteran_protobuf_rust as bpr;
use diesel::{
  r2d2::{ConnectionManager, Pool},
  PgConnection,
};
use prost::Message;

///
pub struct Service {
  connection_broker: nats::asynk::Connection,
  queue_broker: String,
  pool: Pool<ConnectionManager<PgConnection>>,
  game_repository: repositories::game::repository::Repository,
}

impl std::fmt::Debug for Service {
  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    f.debug_struct("Service of api.kgon.identity").finish()
  }
}

impl Service {
  ///
  pub fn new(
    connection_broker: nats::asynk::Connection,
    queue_broker: String,
    pool: Pool<ConnectionManager<PgConnection>>,
  ) -> Service {
    Service {
      connection_broker,
      queue_broker,
      pool,
      game_repository: repositories::game::repository::Repository::new(),
    }
  }

  pub async fn subscribe(&self) -> std::result::Result<(), std::boxed::Box<dyn std::error::Error>> {
    futures::try_join!(self.list_games()).map(|_| ())
  }

  async fn list_games(&self) -> Result<(), Box<dyn std::error::Error>> {
    let s = self
      .connection_broker
      .queue_subscribe(
        bpr::ss::api::game::SUBJECT_LIST_GAMES,
        self.queue_broker.as_str(),
      )
      .await?;

    while let Some(message) = s.next().await {
      if let Err(e) = async {
        let req =
          bpr::ss::api::game::ListGamesRequest::decode(message.data.as_slice()).map_err(|e| {
            bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
              message: format!("invalid request: {}", e),
            })
          })?;

        let client = match req.client {
          Some(c) => c,
          None => {
            return Err(bcr::error::rpc::Error::InvalidParams(
              bcr::error::rpc::InvalidParams {
                message: "invalid client information".to_string(),
                detail: bcr::error::rpc::InvalidParamsDetail {
                  location: "request".to_string(),
                  param: "client".to_string(),
                  value: "".to_string(),
                  error_type: bcr::error::rpc::InvalidParamsType::Required,
                  message: "".to_string(),
                },
              },
            ));
          }
        };
        let request = match req.request {
          Some(r) => r,
          None => {
            return Err(bcr::error::rpc::Error::InvalidParams(
              bcr::error::rpc::InvalidParams {
                message: "invalid request information".to_string(),
                detail: bcr::error::rpc::InvalidParamsDetail {
                  location: "request".to_string(),
                  param: "request".to_string(),
                  value: "".to_string(),
                  error_type: bcr::error::rpc::InvalidParamsType::Required,
                  message: "".to_string(),
                },
              },
            ));
          }
        };

        let conn = self.pool.get().map_err(|e| {
          bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
            code: bpr::protobuf::rpc::Error::SERVER_00,
            message: format!("server {}", e),
            data: None,
          })
        })?;

        let find_all = repositories::game::models::FindAll {
          search: match request.search {
            Some(s) => Some(repositories::game::models::FindAllSearch {
              vendor_id: s.vendor_id.map(|d| d as i64),
              key_like: s.key_like,
              category_like: s.category_like,
              platform_like: s.platform_like,
              game_type_like: s.game_type_like,
            }),
            None => None,
          },
          pagination: request
            .pagination
            .as_ref()
            .map(bcr::pagination::Pagination::from),
          sorts: Some(
            request
              .sorts
              .iter()
              .map(bcr::pagination::Sort::from)
              .collect(),
          ),
        };

        let count = self
          .game_repository
          .select_all_count(&conn, &find_all)
          .map_err(|e| {
            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
              code: bpr::protobuf::rpc::Error::SERVER_00,
              message: format!("server {}", e),
              data: None,
            })
          })?;

        let list = self
          .game_repository
          .select_all(&conn, &find_all)
          .map_err(|e| {
            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
              code: bpr::protobuf::rpc::Error::SERVER_00,
              message: format!("server {}", e),
              data: None,
            })
          })?;

        message
          .respond(
            bpr::ss::api::game::ListGamesResponse {
              error: None,
              result: Some(bpr::ss::api::game::list_games_response::Result {
                games: list
                  .iter()
                  .map(bpr::models::api::game::Game::from)
                  .collect(),
              }),
            }
            .encode_to_vec(),
          )
          .await
          .map_err(|e| {
            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
              code: bpr::protobuf::rpc::Error::SERVER_00,
              message: format!("server {}", e),
              data: None,
            })
          })?;

        Ok::<(), bcr::error::rpc::Error>(())
      }
      .await
      {
        message
          .respond(
            bpr::ss::api::game::ListGamesResponse {
              error: Some(bpr::protobuf::rpc::Error::from(e)),
              result: None,
            }
            .encode_to_vec(),
          )
          .await?;
      }
    }

    Ok(())
  }

  async fn execute_game(&self) -> Result<(), Box<dyn std::error::Error>> {
    Ok(())
  }
}