Committee session status change providers (#2822)

Co-authored-by: stacktraceghost <stacktraceghost@users.noreply.github.com>

Author: stacktraceghost

backend/.sqlx/query-3b49ad9988a84a1a738cfd9e3449ad873624f5e70f32f8379f475e43f6d41874.json

@@ -7,5 +7,6 @@ pub mod election;
 pub mod investigation;
 pub mod middleware;
 pub mod polling_station;
+pub mod providers;
 pub mod report;
 pub mod user;

backend/.sqlx/query-581c25f1e5db5e0ee35f7fdb0fed0d21988dc6118bfe8a179e24361b5373af80.json

@@ -0,0 +1,49 @@
+use sqlx::SqliteConnection;
+
+use crate::{
+    api::committee_session::CommitteeSessionError,
+    domain::{
+        committee_session::CommitteeSessionId,
+        committee_session_status::{
+            CommitteeSessionHasInvestigationsProvider, CommitteeSessionHasPollingStationsProvider,
+            DataEntryCompleteResultsProvider,
+        },
+    },
+    repository::{data_entry_repo, investigation_repo, polling_station_repo},
+};
+
+impl CommitteeSessionHasPollingStationsProvider for SqliteConnection {
+    async fn has_polling_stations(
+        &mut self,
+        committee_session_id: CommitteeSessionId,
+    ) -> Result<bool, CommitteeSessionError> {
+        Ok(polling_station_repo::has_any(self, committee_session_id).await?)
+    }
+}
+
+impl CommitteeSessionHasInvestigationsProvider for SqliteConnection {
+    async fn has_investigations(
+        &mut self,
+        committee_session_id: CommitteeSessionId,
+    ) -> Result<bool, CommitteeSessionError> {
+        Ok(
+            investigation_repo::has_investigations_for_committee_session(
+                self,
+                committee_session_id,
+            )
+            .await?,
+        )
+    }
+}
+
+impl DataEntryCompleteResultsProvider for SqliteConnection {
+    async fn has_complete_results(
+        &mut self,
+        committee_session_id: CommitteeSessionId,
+    ) -> Result<bool, CommitteeSessionError> {
+        Ok(
+            data_entry_repo::are_results_complete_for_committee_session(self, committee_session_id)
+                .await?,
+        )
+    }
+}

backend/src/api/mod.rs

@@ -45,6 +45,29 @@ impl CommitteeSession {
     pub fn is_next_session(&self) -> bool {
         self.number > 1
     }
+
+    #[cfg(test)]
+    pub fn first_session() -> Self {
+        CommitteeSession {
+            number: 1,
+            id: CommitteeSessionId::from(0),
+            election_id: ElectionId::from(0),
+            location: "".to_string(),
+            start_date_time: None,
+            status: CommitteeSessionStatus::Created,
+            results_eml: None,
+            results_pdf: None,
+            overview_pdf: None,
+        }
+    }
+
+    #[cfg(test)]
+    pub fn next_session() -> Self {
+        CommitteeSession {
+            number: 2,
+            ..CommitteeSession::first_session()
+        }
+    }
 }
 
 impl From<CommitteeSession> for audit_log::CommitteeSessionDetails {