Split into multiple crates

crates/musicus_database/src/ensembles.rs

@@ -0,0 +1,52 @@
+use super::schema::ensembles;
+use super::{Database, Result};
+use diesel::prelude::*;
+use serde::{Deserialize, Serialize};
+
+/// An ensemble that takes part in recordings.
+#[derive(Serialize, Deserialize, Insertable, Queryable, Debug, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct Ensemble {
+    pub id: String,
+    pub name: String,
+}
+
+impl Database {
+    /// Update an existing ensemble or insert a new one.
+    pub fn update_ensemble(&self, ensemble: Ensemble) -> Result<()> {
+        self.defer_foreign_keys()?;
+
+        self.connection.transaction(|| {
+            diesel::replace_into(ensembles::table)
+                .values(ensemble)
+                .execute(&self.connection)
+        })?;
+
+        Ok(())
+    }
+
+    /// Get an existing ensemble.
+    pub fn get_ensemble(&self, id: &str) -> Result<Option<Ensemble>> {
+        let ensemble = ensembles::table
+            .filter(ensembles::id.eq(id))
+            .load::<Ensemble>(&self.connection)?
+            .into_iter()
+            .next();
+
+        Ok(ensemble)
+    }
+
+    /// Delete an existing ensemble.
+    pub fn delete_ensemble(&self, id: &str) -> Result<()> {
+        diesel::delete(ensembles::table.filter(ensembles::id.eq(id))).execute(&self.connection)?;
+
+        Ok(())
+    }
+
+    /// Get all existing ensembles.
+    pub fn get_ensembles(&self) -> Result<Vec<Ensemble>> {
+        let ensembles = ensembles::table.load::<Ensemble>(&self.connection)?;
+
+        Ok(ensembles)
+    }
+}