use crate::PerformCrud;
use actix_web::web::Data;
use lemmy_api_common::{
  blocking,
  get_local_user_view_from_jwt,
  person::{EditPrivateMessage, PrivateMessageResponse},
};
use lemmy_apub::activities::{
  private_message::create_or_update::CreateOrUpdatePrivateMessage,
  CreateOrUpdateType,
};
use lemmy_db_schema::{source::private_message::PrivateMessage, traits::Crud};
use lemmy_utils::{utils::remove_slurs, ApiError, ConnectionId, LemmyError};
use lemmy_websocket::{send::send_pm_ws_message, LemmyContext, UserOperationCrud};

#[async_trait::async_trait(?Send)]
impl PerformCrud for EditPrivateMessage {
  type Response = PrivateMessageResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessageResponse, LemmyError> {
    let data: &EditPrivateMessage = self;
    let local_user_view =
      get_local_user_view_from_jwt(&data.auth, context.pool(), context.secret()).await?;

    // Checking permissions
    let private_message_id = data.private_message_id;
    let orig_private_message = blocking(context.pool(), move |conn| {
      PrivateMessage::read(conn, private_message_id)
    })
    .await??;
    if local_user_view.person.id != orig_private_message.creator_id {
      return Err(ApiError::err_plain("no_private_message_edit_allowed").into());
    }

    // Doing the update
    let content_slurs_removed = remove_slurs(&data.content, &context.settings().slur_regex());
    let private_message_id = data.private_message_id;
    let updated_private_message = blocking(context.pool(), move |conn| {
      PrivateMessage::update_content(conn, private_message_id, &content_slurs_removed)
    })
    .await?
    .map_err(|e| ApiError::err("couldnt_update_private_message", e))?;

    // Send the apub update
    CreateOrUpdatePrivateMessage::send(
      &updated_private_message,
      &local_user_view.person,
      CreateOrUpdateType::Update,
      context,
    )
    .await?;

    let op = UserOperationCrud::EditPrivateMessage;
    send_pm_ws_message(data.private_message_id, op, websocket_id, context).await
  }
}