formatting the code, adding files in controllers

lib/controllers/database.dart

@@ -0,0 +1,213 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:firebase_storage/firebase_storage.dart';
+import 'package:flutter/material.dart';
+import 'package:news_app/controllers/navigation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class Database {
+  static Future<int> updateLikes(int prevLike, String id) async {
+    int likes = prevLike;
+
+    DocumentReference<Map<String, dynamic>> doc =
+        FirebaseFirestore.instance.collection('articals').doc(id);
+
+    var snapshot = await doc.get();
+    List? snapList = snapshot.data()!['liked'];
+    snapList ??= [];
+    var pref = await SharedPreferences.getInstance();
+
+    if (!snapList.contains(pref.getString('email')) || likes <= 0) {
+      snapList.add(pref.getString('email'));
+      await doc.update({'likes': likes + 1, 'liked': snapList});
+      likes = likes + 1;
+    } else {
+      snapList.remove(pref.getString('email'));
+      await doc.update({'likes': likes - 1, 'liked': snapList});
+      likes = likes - 1;
+    }
+    return likes;
+  }
+
+  static Future<List<QueryDocumentSnapshot<Map<String, dynamic>>>>
+      deleteBookmark(
+          String email,
+          String id,
+          List<QueryDocumentSnapshot<Map<String, dynamic>>> cartItems,
+          int index) async {
+    var doc = FirebaseFirestore.instance.collection('user').doc(email);
+
+    List<dynamic> list;
+    var instance = await doc.get();
+    list = instance.data()!['bookmark'];
+    list.remove(cartItems[index].id);
+    cartItems.remove(cartItems[index]);
+    await doc.update({'bookmark': list});
+
+    return cartItems;
+  }
+
+  static void appyEdits(
+      bool isUploading,
+      BuildContext context,
+      QueryDocumentSnapshot<Map<String, dynamic>> snapshot,
+      String image,
+      int amount,
+      String discription,
+      String title,
+      String upi,
+      int likes,
+      String writer,
+      List liked,
+      String email) {
+    if (image != snapshot.data()['image']) {
+      FirebaseStorage.instance.refFromURL(snapshot.data()['image']).delete();
+    }
+    FirebaseFirestore.instance.collection('articals').doc(snapshot.id).set({
+      'amount': amount,
+      'discription': discription,
+      'image': image,
+      'title': title,
+      'upi': upi,
+      'likes': likes,
+      'writer': writer,
+      'liked': liked,
+      'email': email,
+    });
+
+    if (!isUploading) {
+      Navigator.pop(context);
+    }
+  }
+
+  static void deleteArtical(
+      BuildContext context,
+      QueryDocumentSnapshot<Map<String, dynamic>> snapshot,
+      String email) async {
+    // Remove the artical
+    FirebaseFirestore.instance.collection('articals').doc(snapshot.id).delete();
+
+    //Remove from writer account
+    var doc = FirebaseFirestore.instance.collection('user').doc(email);
+    var snap = await doc.get();
+    List list = snap.data()!['articals'];
+    list.remove(snapshot.id);
+    await doc.update({'articals': list});
+
+    // Remove from reader's account
+    var query = FirebaseFirestore.instance
+        .collection('user')
+        .where('bookmark', arrayContains: snapshot.id);
+    var querySnapshot = await query.get();
+    List<QueryDocumentSnapshot<Map<String, dynamic>>> queryList =
+        querySnapshot.docs;
+    for (int i = 0; i < queryList.length; i++) {
+      List cartList = queryList[i].data()['bookmark'];
+      cartList.remove(snapshot.id);
+      await FirebaseFirestore.instance
+          .collection('user')
+          .doc(queryList[i].id)
+          .update({'bookmark': cartList});
+    }
+
+    //Remove the image
+    FirebaseStorage.instance.refFromURL(snapshot.data()['image']).delete();
+
+    Navigator.pop(context);
+  }
+
+  static void addToBookmark(BuildContext context, String email, String id) {
+    DocumentReference<Map<String, dynamic>> doc =
+        FirebaseFirestore.instance.collection('user').doc(email);
+
+    doc.get().then((value) {
+      List list = value.data()!['bookmark'];
+      if (!list.contains(id)) {
+        list.add(id);
+        doc.update({'bookmark': list});
+
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+            backgroundColor: Colors.black,
+            content: Text("Artical added in your cart")));
+      } else {
+        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+            backgroundColor: Colors.black,
+            content: Text("Artical is already present in you cart")));
+      }
+    });
+  }
+
+  static void registerAccount(BuildContext context, String email, String pass,
+      String upi, String name) {
+    FirebaseAuth.instance
+        .createUserWithEmailAndPassword(email: email, password: pass)
+        .then((value) {
+      SharedPreferences.getInstance().then((pref) {
+        pref.setBool('login', true);
+        pref.setString('email', email);
+        pref.setString('name', name);
+        pref.setString('upi', upi);
+
+        FirebaseFirestore.instance.collection('user').doc(email).set({
+          'bookmark': [],
+          'articals': [],
+          'name': name,
+          'upi': upi
+        }).then((_) {
+          Navigation.toReaderHomeAndRemovePrevPages(context);
+        });
+      });
+    }).onError((error, stackTrace) {});
+  }
+
+  static void loginAccount(BuildContext context, String email, String pass) {
+    FirebaseAuth.instance
+        .signInWithEmailAndPassword(email: email, password: pass)
+        .then((value) async {
+      SharedPreferences.getInstance().then((pref) {
+        pref.setBool('login', true);
+        pref.setString('email', email);
+
+        FirebaseFirestore.instance
+            .collection('user')
+            .doc(email)
+            .get()
+            .then((documentsnapshot) {
+          pref.setString('name', documentsnapshot['name']);
+          pref.setString('upi', documentsnapshot['upi']);
+
+          Navigation.toReaderHomeAndRemovePrevPages(context);
+        });
+      });
+    }).onError((error, stackTrace) {});
+  }
+
+  static void createArtical(
+      List<Object?> articalFields, String upi, String name, String email) {
+    var document = FirebaseFirestore.instance.collection('articals').doc();
+    document.set({
+      'amount': articalFields[2] as int,
+      'discription': articalFields[3] as String,
+      'image': articalFields[0] as String,
+      'title': articalFields[1] as String,
+      'upi': upi,
+      'writer': name,
+      'likes': 0,
+      'liked': [],
+      'email': email,
+    });
+
+    FirebaseFirestore.instance
+        .collection('user')
+        .doc(email)
+        .get()
+        .then((value) async {
+      Map<String, dynamic> mpp = value.data()!;
+      mpp['articals'].add(document.id);
+      await FirebaseFirestore.instance
+          .collection('user')
+          .doc(email)
+          .update({'articals': mpp['articals']});
+    });
+  }
+}

lib/controllers/navigation.dart

@@ -0,0 +1,85 @@
+import 'package:cloud_firestore/cloud_firestore.dart';
+import 'package:firebase_auth/firebase_auth.dart';
+import 'package:flutter/material.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import '../pages/artical_page.dart';
+import '../pages/bookmark_page.dart';
+import '../pages/edit_page.dart';
+import '../pages/reader_home.dart';
+import '../pages/register_account.dart';
+import '../pages/user_login.dart';
+import '../pages/write_artical.dart';
+import '../pages/writer_home.dart';
+
+class Navigation {
+  static void toLoginPage(BuildContext context) {
+    Navigator.pushAndRemoveUntil(
+        context,
+        MaterialPageRoute(builder: ((context) => const UserLogin())),
+        (route) => false);
+  }
+
+  static void toLogout(BuildContext context) {
+    FirebaseAuth.instance.signOut();
+    SharedPreferences.getInstance().then((value) {
+      value.remove('name');
+      value.remove('email');
+      value.remove('login');
+      value.clear();
+
+      Navigation.toLoginPage(context);
+    });
+  }
+
+  static void toRegisterPage(BuildContext context) {
+    Navigator.push(context,
+        MaterialPageRoute(builder: (context) => const RegisterAccount()));
+  }
+
+  static void toArticalPage(BuildContext context,
+      List<QueryDocumentSnapshot<Map<String, dynamic>>> cartItems, int index) {
+    Navigator.push(
+        context,
+        MaterialPageRoute(
+            builder: ((context) => ArticalPage(snapshot: cartItems[index]))));
+  }
+
+  static void toBookmarkPage(BuildContext context, String email) {
+    Navigator.push(context,
+        MaterialPageRoute(builder: ((context) => BookmarkPage(email: email))));
+  }
+
+  static void toEditArticalPage(BuildContext context,
+      QueryDocumentSnapshot<Map<String, dynamic>> snapshot) {
+    Navigator.push(
+        context,
+        MaterialPageRoute(
+            builder: ((context) => EditPage(snapshot: snapshot))));
+  }
+
+  static Future<List<Object>?> toWriteArticalPage(
+      BuildContext context, String name, String email) async {
+    return await Navigator.push(
+        context,
+        MaterialPageRoute(
+            builder: ((context) => WriteArtical(
+                  name: name,
+                  email: email,
+                ))));
+  }
+
+  static void toReaderHomeAndRemovePrevPages(BuildContext context) {
+    Navigator.pushAndRemoveUntil(
+        context,
+        MaterialPageRoute(builder: (context) => const ReaderHome()),
+        (route) => false);
+  }
+
+  static void toWriterHomeAndRemovePrevPages(BuildContext context) {
+    Navigator.pushAndRemoveUntil(
+        context,
+        MaterialPageRoute(builder: ((context) => const WriterHome())),
+        (route) => false);
+  }
+}

lib/main.dart

@@ -1,8 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:firebase_core/firebase_core.dart';
-import 'package:news_app/pages/login_page.dart';
 import 'package:news_app/pages/reader_home.dart';
-import 'package:news_app/pages/writer_home.dart';
+import 'package:news_app/pages/user_login.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import 'firebase_options.dart';
@@ -15,85 +14,15 @@ void main() async {
 
   SharedPreferences prefs = await SharedPreferences.getInstance();
   bool? login = prefs.getBool('login');
-  bool? isWriter = prefs.getBool('isWriter');
 
   runApp(MaterialApp(
     title: 'News App',
-    routes: {
-      '/login': (context) => const LoginPage(),
-      '/reder_home': (context) => const ReaderHome(),
-      '/writer_home': (context) => const WriterHome(),
-    },
     debugShowCheckedModeBanner: false,
     theme: ThemeData(
       primaryColor: Colors.black,
     ),
-    home: login == null || isWriter == null
-        ? const LoginPage()
-        : isWriter
-            ? const WriterHome()
-            : const ReaderHome(),
+    home: login == null
+        ? const UserLogin()
+        : const ReaderHome(),
   ));
 }
-
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        primarySwatch: Colors.blue,
-      ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
-    );
-  }
-}
-
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
-
-  final String title;
-
-  @override
-  State<MyHomePage> createState() => _MyHomePageState();
-}
-
-class _MyHomePageState extends State<MyHomePage> {
-  int _counter = 0;
-
-  void _incrementCounter() {
-    setState(() {
-      _counter++;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: Text(widget.title),
-      ),
-      body: Center(
-        child: Column(
-          mainAxisAlignment: MainAxisAlignment.center,
-          children: <Widget>[
-            const Text(
-              'You have pushed the button this many times:',
-            ),
-            Text(
-              '$_counter',
-              style: Theme.of(context).textTheme.headline4,
-            ),
-          ],
-        ),
-      ),
-      floatingActionButton: FloatingActionButton(
-        onPressed: _incrementCounter,
-        tooltip: 'Increment',
-        child: const Icon(Icons.add),
-      ),
-    );
-  }
-}