Implement all balance functions

src/main.rs

@@ -26,6 +26,8 @@ async fn rocket() -> _ {
             get_member_by_id,
             add_member,
             get_members,
-            update_member_by_id
+            update_member_by_id,
+            get_member_balance_by_id,
+            update_member_balance_by_id
         ])
 }

src/models/member.rs

@@ -110,3 +110,9 @@ impl Into<members::ActiveModel> for rocket::serde::json::Json<MinimalMemberWitho
 pub struct MultipleMembersStruct {
     pub members: Vec<Member>,
 }
+
+
+#[derive(Deserialize, Serialize)]
+pub struct Balance {
+    pub balance: i32
+}

src/webserver_member.rs

@@ -182,3 +182,56 @@ pub async fn update_member_by_id(db: &State<DatabaseConnection>, minimal_member_
 
     Ok(Json(member))
 }
+
+#[get("/member/<member_id>/balance")]
+pub async fn get_member_balance_by_id(db: &State<DatabaseConnection>, member_id: i32) -> Result<Json<Balance>, ErrorResponder> {
+    let db = db as &DatabaseConnection;
+
+    // Fetch the member's info from the BD
+    let member: members::Model;
+    match Members::find_by_id(member_id).one(db).await? {
+        Some(m) => member = m,
+        None => return Err (ErrorResponder { message: format!("Could not find member with the spcified ID. ID: {}", member_id)  }),
+    }
+
+    // Extract the balance
+    let balance: Balance = Balance {
+        balance: member.balance.to_owned()
+    };
+
+    // Return the balance
+    Ok(Json(balance))
+}
+
+#[put("/member/<member_id>/balance", data="<balance>")]
+pub async fn update_member_balance_by_id(db: &State<DatabaseConnection>, member_id: i32, balance: Json<Balance>) -> Result<Json<Balance>, ErrorResponder> {
+    let db = db as &DatabaseConnection;
+
+    // Fetch the current member info from the DB
+    let current_member_info: members::Model;
+    match Members::find_by_id(member_id).one(db).await? {
+        Some(m) => current_member_info = m,
+        None => return Err (ErrorResponder { message: format!("Could not find member with the spcified ID. ID: {}", member_id)  }),
+    }
+
+    // Create a new DB thingie from the fetched info
+    let mut resulting_member: members::ActiveModel = current_member_info.clone().into();
+    resulting_member.balance = ActiveValue::Set(current_member_info.balance + balance.balance);
+
+    // Update the DB entry for the user
+    resulting_member.update(db).await?;
+
+    // Fetch the member's info back from the DB
+    let current_member_info: members::Model;
+    match Members::find_by_id(member_id).one(db).await? {
+        Some(m) => current_member_info = m,
+        None => return Err (ErrorResponder { message: format!("Could not find member with the spcified ID. ID: {}", member_id)  }),
+    }
+
+    // Turn it into the native model
+    let balance: Balance = Balance {
+        balance: current_member_info.balance,
+    };
+
+    Ok(Json(balance))
+}