From a810f9ad2c399fb6d9495c0504fcf400f6b5bb3b Mon Sep 17 00:00:00 2001
From: Werner Fleischer <70745309+wfleischer@users.noreply.github.com>
Date: Wed, 27 Nov 2024 07:55:12 +0100
Subject: [PATCH] schedules: change scheduleProviderFamily to throw if a
 schedule does not exist (#133)

---
 lib/src/schedules/entities/schedule.dart | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/src/schedules/entities/schedule.dart b/lib/src/schedules/entities/schedule.dart
index 3bbba7b..afec5fb 100644
--- a/lib/src/schedules/entities/schedule.dart
+++ b/lib/src/schedules/entities/schedule.dart
@@ -3,10 +3,17 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:nwt_reading/src/schedules/entities/schedules.dart';
 
-final scheduleProviderFamily = FutureProviderFamily<Schedule?, ScheduleKey>(
-    (ref, scheduleKey) async =>
-        (await ref.watch(schedulesProvider.future)).schedules[scheduleKey],
-    name: 'scheduleProviderFamily');
+final scheduleProviderFamily =
+    FutureProviderFamily<Schedule?, ScheduleKey>((ref, scheduleKey) async {
+  final schedules = await ref.watch(schedulesProvider.future);
+  final schedule = schedules.schedules[scheduleKey];
+
+  if (schedule == null) {
+    throw Exception('Schedule does not exist');
+  }
+
+  return schedule;
+}, name: 'scheduleProviderFamily');
 
 enum ScheduleType {
   chronological,