fix dart errors and warnings

lib/catalog/models/book.dart

@@ -1,29 +1,29 @@
-import 'dart:ffi';
-
 // sekedar buat test
 
+// ignore_for_file: non_constant_identifier_names
+
 class Book {
-    int isbn13;
-    String title;
-    String authors;
-    String categories;
-    String thumbnail;
-    String description;
-    int published_year;
-    int page_count;
-    int overall_rating; //sementara int dulu, gatau kenapa kalo pake Float dia tu parameternya error
-    int favorites_count;
+  int isbn13;
+  String title;
+  String authors;
+  String categories;
+  String thumbnail;
+  String description;
+  int published_year;
+  int page_count;
+  int overall_rating; //sementara int dulu, gatau kenapa kalo pake Float dia tu parameternya error
+  int favorites_count;
 
-    Book(
-        this.isbn13,
-        this.title,
-        this.authors,
-        this.categories,
-        this.thumbnail,
-        this.description,
-        this.published_year,
-        this.page_count,
-        this.overall_rating,
-        this.favorites_count,
-    );
-}
+  Book(
+    this.isbn13,
+    this.title,
+    this.authors,
+    this.categories,
+    this.thumbnail,
+    this.description,
+    this.published_year,
+    this.page_count,
+    this.overall_rating,
+    this.favorites_count,
+  );
+}

lib/catalog/screens/catalog_home.dart

@@ -22,7 +22,7 @@ class CatalogHome extends StatefulWidget {
   const CatalogHome({Key? key}) : super(key: key);
 
   @override
-  _CatalogHomeState createState() => _CatalogHomeState();
+  State<CatalogHome> createState() => _CatalogHomeState();
 }
 
 class _CatalogHomeState extends State<CatalogHome> {

lib/catalog/screens/detail_book.dart

@@ -22,7 +22,7 @@ class DetailBookPage extends StatelessWidget {
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Center(
-                child: Container(
+                child: SizedBox(
               width: 200,
               child: AspectRatio(
                 aspectRatio: AppData().bookAspectRatio,
@@ -46,7 +46,7 @@ class DetailBookPage extends StatelessWidget {
             ),
             const SizedBox(height: 15.0),
             Text(
-              'Authors: ${book.authors.split(';').map((author) => "$author").join(', ')}',
+              'Authors: ${book.authors.split(';').map((author) => author).join(', ')}',
               style: const TextStyle(fontSize: 18.0),
             ),
             const SizedBox(height: 15.0),
@@ -85,9 +85,9 @@ class DetailBookPage extends StatelessWidget {
               ),
             ),
             const SizedBox(height: 15.0),
-            Text(
+            const Text(
               'Description:',
-              style: const TextStyle(fontSize: 18.0),
+              style: TextStyle(fontSize: 18.0),
             ),
             const SizedBox(height: 8.0),
             Text(

lib/catalog/widgets/book_tile.dart

@@ -18,7 +18,7 @@ class BookTile extends StatelessWidget {
       padding: const EdgeInsets.all(15.0),
       child: Row(
         children: [
-          Container(
+          SizedBox(
             width: 70,
             child: AspectRatio(
               aspectRatio: AppData().bookAspectRatio,
@@ -33,17 +33,17 @@ class BookTile extends StatelessWidget {
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Text(
-                  "${book.title}",
+                  book.title,
                   style: const TextStyle(
                     fontSize: 18.0,
                     fontWeight: FontWeight.bold,
                   ),
                 ),
                 const SizedBox(height: 10),
                 Text(
-                    "by ${book.authors.split(';').map((author) => "$author").join(', ')}"),
+                    "by ${book.authors.split(';').map((author) => author).join(', ')}"),
                 const SizedBox(height: 10),
-                Text("${book.categories}"),
+                Text(book.categories),
               ],
             ),
           ))

lib/library/models/librarybook.dart

@@ -1,3 +1 @@
-import 'dart:convert';
-
 class LibraryBook {}

lib/library/screens/library_add.dart

@@ -16,6 +16,6 @@ class _LibraryAddFormState extends State<LibraryAddForm> {
   Widget build(BuildContext context) {
     final request = context.watch<CookieRequest>();
 
-    return Scaffold();
+    return const Scaffold();
   }
 }

lib/library/screens/library_detail.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:letterbookd/library/models/librarybook.dart';
+// import 'package:letterbookd/library/models/librarybook.dart';
 import 'package:letterbookd/library/widgets/library_detail_actions.dart';
 import 'package:letterbookd/library/widgets/library_detail_header.dart';
 

lib/library/screens/library_home.dart

@@ -70,7 +70,7 @@ class LibraryHome extends StatelessWidget {
               childAspectRatio: AppData().bookAspectRatio,
               crossAxisCount: 3,
             ),
-            itemCount: 18,
+            itemCount: 12,
             itemBuilder: (context, index) {
               return const LibraryTile();
             }),

lib/reader/screens/reader_home.dart

@@ -21,7 +21,7 @@ class ReaderHome extends StatelessWidget {
         padding: const EdgeInsets.all(16.0),
         child: ListView(
           children: [
-            Center(
+            const Center(
               child: CircleAvatar(
                 radius: 50,
                 backgroundImage: AssetImage('assets/images/pfp_0.jpg'),
@@ -30,7 +30,7 @@ class ReaderHome extends StatelessWidget {
             _buildUserInfoCard('Username', reader['username']!),
             _buildUserInfoCard('Name', reader['name']!),
             _buildUserInfoCard('Bio', reader['bio']!),
-            SizedBox(height: 16),
+            const SizedBox(height: 16),
             ElevatedButton(
               onPressed: () {
                 Navigator.push(
@@ -42,13 +42,13 @@ class ReaderHome extends StatelessWidget {
               style: Theme.of(context).elevatedButtonTheme.style,
               child: const Text('Edit Profile'),
             ),
-            SizedBox(height: 24),
+            const SizedBox(height: 24),
             const Text(
               'Library',
               style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold),
             ),
             _buildGridSection(4), // Library cards
-            SizedBox(height: 24),
+            const SizedBox(height: 24),
             const Text(
               'Review',
               style: TextStyle(fontSize: 22, fontWeight: FontWeight.bold),
@@ -62,20 +62,21 @@ class ReaderHome extends StatelessWidget {
 
   Widget _buildUserInfoCard(String title, String content) {
     return Card(
-      margin: EdgeInsets.symmetric(vertical: 8.0),
+      margin: const EdgeInsets.symmetric(vertical: 8.0),
       child: ListTile(
         title: Text(title),
         subtitle: Text(content),
-        contentPadding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 10.0),
+        contentPadding:
+            const EdgeInsets.symmetric(horizontal: 16.0, vertical: 10.0),
       ),
     );
   }
 
   Widget _buildGridSection(int itemCount) {
     return GridView.builder(
       shrinkWrap: true,
-      physics: NeverScrollableScrollPhysics(),
-      gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+      physics: const NeverScrollableScrollPhysics(),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
         crossAxisCount: 2,
         crossAxisSpacing: 10,
         mainAxisSpacing: 10,

lib/reader/screens/reader_settings.dart

@@ -4,7 +4,7 @@ class EditProfileScreen extends StatefulWidget {
   const EditProfileScreen({Key? key}) : super(key: key);
 
   @override
-  _EditProfileScreenState createState() => _EditProfileScreenState();
+  State<EditProfileScreen> createState() => _EditProfileScreenState();
 }
 
 class _EditProfileScreenState extends State<EditProfileScreen> {
@@ -37,7 +37,7 @@ class _EditProfileScreenState extends State<EditProfileScreen> {
                 setState(() => shareReviews = newValue);
               },
             ),
-            SizedBox(height: 20),
+            const SizedBox(height: 20),
             ElevatedButton(
               onPressed: () {
                 Navigator.pop(context);

lib/review/models/review.dart

@@ -1,15 +1,15 @@
+// ignore_for_file: non_constant_identifier_names
 
-class Review{
-    int stars_rating;
-    int total_rating;
-    String status_on_review;
-    String review_text;
+class Review {
+  int stars_rating;
+  int total_rating;
+  String status_on_review;
+  String review_text;
 
-
-    Review(
-      this.stars_rating,
-      this.total_rating,
-      this.status_on_review,
-      this.review_text,
-    );
-    }
+  Review(
+    this.stars_rating,
+    this.total_rating,
+    this.status_on_review,
+    this.review_text,
+  );
+}

lib/review/screens/review_add.dart

@@ -1,9 +1,8 @@
-import 'dart:convert';
+// import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:pbp_django_auth/pbp_django_auth.dart';
 import 'package:provider/provider.dart';
 
-
 class ShopFormPage extends StatefulWidget {
   const ShopFormPage({super.key});
 
@@ -113,8 +112,7 @@ class _ShopFormPageState extends State<ShopFormPage> {
                 padding: const EdgeInsets.all(8.0),
                 child: ElevatedButton(
                   style: ButtonStyle(
-                    backgroundColor:
-                        MaterialStateProperty.all(Colors.indigo),
+                    backgroundColor: MaterialStateProperty.all(Colors.indigo),
                   ),
                   onPressed: () {
                     if (_formKey.currentState!.validate()) {}
@@ -131,4 +129,4 @@ class _ShopFormPageState extends State<ShopFormPage> {
       ),
     );
   }
-}
+}

lib/review/screens/review_home.dart

@@ -66,7 +66,7 @@ class ReviewItem {
 class ReviewCard extends StatelessWidget {
   final ReviewItem item;
 
-  const ReviewCard(this.item);
+  const ReviewCard(this.item, {super.key});
 
   @override
   Widget build(BuildContext context) {