delete cancelled trips if all rowers have seen the notification

src/model/usertrip.rs

@@ -1,9 +1,21 @@
-use sqlx::SqlitePool;
+use serde::{Deserialize, Serialize};
+use sqlx::{FromRow, SqlitePool};
 
-use super::{notification::Notification, trip::Trip, tripdetails::TripDetails, user::User};
+use super::{
+    notification::Notification,
+    trip::{Trip, TripWithUserAndType},
+    tripdetails::TripDetails,
+    user::{CoxUser, User},
+};
 use crate::model::tripdetails::{Action, CoxAtTrip::Yes};
 
-pub struct UserTrip {}
+#[derive(FromRow, Debug, Serialize, Deserialize, Clone)]
+pub struct UserTrip {
+    pub user_id: Option<i64>,
+    pub user_note: Option<String>,
+    pub trip_details_id: i64,
+    pub created_at: String, // TODO: switch to NaiveDateTime
+}
 
 impl UserTrip {
     pub async fn create(
@@ -66,23 +78,27 @@ impl UserTrip {
             .await
             .unwrap();
 
-            user_note.unwrap()
+            user_note.clone().unwrap()
         };
 
         if let Some(trip) = Trip::find_by_trip_details(db, trip_details.id).await {
-            let cox = User::find_by_id(db, trip.cox_id as i32).await.unwrap();
-            Notification::create(
-                db,
-                &cox,
-                &format!(
-                    "{} hat sich für deine Ausfahrt am {} registriert",
-                    name_newly_registered_person, trip.day
-                ),
-                "Registrierung bei deiner Ausfahrt",
-                None,
-                None,
-            )
-            .await;
+            if user_note.is_none() {
+                // Don't show notification if we add guest (as only we are
+                // allowed to do so)
+                let cox = User::find_by_id(db, trip.cox_id as i32).await.unwrap();
+                Notification::create(
+                    db,
+                    &cox,
+                    &format!(
+                        "{} hat sich für deine Ausfahrt am {} registriert",
+                        name_newly_registered_person, trip.day
+                    ),
+                    "Registrierung bei deiner Ausfahrt",
+                    None,
+                    None,
+                )
+                .await;
+            }
 
             trip_details.check_free_spaces(db).await;
         }
@@ -90,6 +106,34 @@ impl UserTrip {
         Ok(name_newly_registered_person)
     }
 
+    pub async fn tripdetails(&self, db: &SqlitePool) -> TripDetails {
+        TripDetails::find_by_id(db, self.trip_details_id)
+            .await
+            .unwrap()
+    }
+
+    pub async fn find_by_userid_and_trip_detail_id(
+        db: &SqlitePool,
+        user_id: i64,
+        trip_detail_id: i64,
+    ) -> Option<Self> {
+        sqlx::query_as!(Self, "SELECT user_id, user_note, trip_details_id, created_at FROM user_trip WHERE user_id= ? AND trip_details_id = ?", user_id, trip_detail_id)
+            .fetch_one(db)
+            .await
+            .ok()
+    }
+
+    pub async fn self_delete(&self, db: &SqlitePool) -> Result<(), UserTripDeleteError> {
+        let trip_details = self.tripdetails(db).await;
+        if let Some(id) = self.user_id {
+            let user = User::find_by_id(db, id as i32).await.unwrap();
+            return Self::delete(db, &user, &trip_details, self.user_note.clone()).await;
+        }
+
+        Ok(()) // TODO: fixme
+    }
+
+    //TODO: cleaner code
     pub async fn delete(
         db: &SqlitePool,
         user: &User,
@@ -104,7 +148,24 @@ impl UserTrip {
             return Err(UserTripDeleteError::NotVisibleToUser);
         }
 
-        if let Some(name) = name {
+        let mut trip_to_delete = None;
+        let mut some_trip = None;
+        if let Some(trip) = Trip::find_by_trip_details(db, trip_details.id).await {
+            some_trip = Some(trip.clone());
+            // If trip is cancelled, and lost rower just unregistered, delete the trip
+            if TripDetails::find_by_id(db, trip_details.id)
+                .await
+                .unwrap()
+                .cancelled()
+            {
+                let trip = TripWithUserAndType::from(db, trip.clone()).await;
+                if trip.rower.len() == 1 {
+                    trip_to_delete = Some(trip.trip);
+                }
+            }
+        }
+
+        if let Some(name) = name.clone() {
             if !trip_details.user_allowed_to_change(db, user).await {
                 return Err(UserTripDeleteError::NotAllowedToDeleteGuest);
             }
@@ -132,6 +193,55 @@ impl UserTrip {
             .await
             .unwrap();
         }
+
+        let mut add_info = "";
+        if let Some(trip) = &trip_to_delete {
+            let cox = User::find_by_id(db, trip.cox_id as i32).await.unwrap();
+            trip.delete(db, &CoxUser::new(db, cox).await.unwrap())
+                .await
+                .unwrap();
+            add_info = " Das war die letzte angemeldete Person. Nachdem nun alle Bescheid wissen, wird die Ausfahrt ab sofort nicht mehr angezeigt.";
+        }
+
+        if let Some(trip) = some_trip {
+            let opt_cancelled = if trip_to_delete.is_some() {
+                "abgesagten "
+            } else {
+                ""
+            };
+            if let Some(name) = name {
+                if !add_info.is_empty() {
+                    let cox = User::find_by_id(db, trip.cox_id as i32).await.unwrap();
+                    Notification::create(
+                        db,
+                        &cox,
+                        &format!(
+                            "Du hast {} von deiner {}Ausfahrt am {} abgemeldet.{}",
+                            name, opt_cancelled, trip.day, add_info
+                        ),
+                        "Abmeldung von deiner Ausfahrt",
+                        None,
+                        None,
+                    )
+                    .await;
+                }
+            } else {
+                let cox = User::find_by_id(db, trip.cox_id as i32).await.unwrap();
+                Notification::create(
+                    db,
+                    &cox,
+                    &format!(
+                        "{} hat sich von deiner {}Ausfahrt am {} abgemeldet.{}",
+                        user.name, opt_cancelled, trip.day, add_info
+                    ),
+                    "Abmeldung von deiner Ausfahrt",
+                    None,
+                    None,
+                )
+                .await;
+            }
+        }
+
         Ok(())
     }
 }