first commitv0.0.1

9 files changed, 731 insertions, 0 deletions

diff --git a/lib/main.dart b/lib/main.dart
new file mode 100644
index 0000000..09d16d7
--- /dev/null
+++ b/lib/main.dart
@@ -0,0 +1,156 @@
+import "package:flutter/material.dart";
+import "package:flutter_secure_storage/flutter_secure_storage.dart";
+//import "package:window_manager/window_manager.dart";
+
+import "package:openbills/screens/login.dart";
+import "package:openbills/widgets/snackbar.dart";
+import "package:openbills/models/instance.dart";
+
+void main() async {
+	//WidgetsFlutterBinding.ensureInitialized();
+	//await windowManager.ensureInitialized();
+
+	//WindowOptions windowOptions = const WindowOptions(
+	//	minimumSize: Size(400, 600),
+	//	center: true,
+	//	backgroundColor: Colors.transparent,
+	//	skipTaskbar: false,
+	//	titleBarStyle: TitleBarStyle.normal,
+	//);
+
+	//windowManager.waitUntilReadyToShow(windowOptions, () async {
+	//	await windowManager.show();
+	//	await windowManager.focus();
+	//});
+
+  runApp(MaterialApp(
+	  title: "OpenBills",
+		theme: ThemeData.light(),
+		darkTheme: ThemeData.dark(),
+		//themeMode: ThemeMode.system,
+		themeMode: ThemeMode.dark,
+		//home: const HomeScreen(),
+		home: const MyApp(),
+	));
+}
+
+class MyApp extends StatefulWidget {
+	const MyApp({super.key});
+
+	@override
+	State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+	final _storage = const FlutterSecureStorage();
+
+	String _authToken = "";
+	String _refreshToken = "";
+	String _version = "";
+
+	@override
+	void initState() {
+		super.initState();
+
+		_readAll();
+	}
+
+	Future<void> _readAll() async {
+		final authToken = await _storage.read(key: "auth_token", aOptions: const AndroidOptions(
+			encryptedSharedPreferences: true,
+		));
+		final refreshToken = await _storage.read(key: "refresh_token", aOptions: const AndroidOptions(
+			encryptedSharedPreferences: true,
+		));
+		final Instance instance = await getInstance("https://openbills.vidhukant.com");
+
+		setState(() {
+			if (authToken != null) {
+				_authToken = authToken.toString();
+			}
+
+			if (refreshToken != null) {
+				_refreshToken = refreshToken.toString();
+			}
+
+			_version = instance.version;
+		});
+	}
+
+	@override
+	Widget build(BuildContext context) {
+		if (_authToken == "") {
+			return const LoginScreen();
+		} else {
+			return Scaffold(
+				appBar: AppBar(
+					title: const Text("OpenBills Home Screen"),
+				),
+				body: Padding(
+					padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+					child: Column(
+						children: <Widget>[
+							Text(
+								"You are logged into OpenBills $_version!",
+								textAlign: TextAlign.center,
+								style: const TextStyle(
+									fontSize: 30,
+									fontWeight: FontWeight.bold,
+								),
+							),
+
+							const SizedBox(
+								height: 50,
+							),
+
+							Text(
+								"Auth Bearer Token: $_authToken",
+							),
+
+							const SizedBox(
+								height: 25,
+							),
+
+							Text(
+								"Refresh Token: $_refreshToken",
+							),
+
+							const SizedBox(
+								height: 50,
+							),
+
+							const Text(
+								"Well yeah this doesn't do much but yay this is pretty cool",
+							),
+
+							const SizedBox(
+								height: 50,
+							),
+
+							Row (
+								mainAxisAlignment: MainAxisAlignment.end,
+								children: <Widget>[
+									TextButton(
+										child: const Text("Log Out"),
+										onPressed: () async {
+											await _storage.delete(key: "auth_token");
+											await _storage.delete(key: "refresh_token");
+
+											if (context.mounted) {
+												MySnackBar.show(context, "You have been logged out.");
+											}
+
+											setState(() {
+												_authToken = "";
+											});
+										},
+									),
+								],
+							)
+						],
+					),
+				)
+			);
+		}
+	}
+}
diff --git a/lib/models/instance.dart b/lib/models/instance.dart
new file mode 100644
index 0000000..b01b052
--- /dev/null
+++ b/lib/models/instance.dart
@@ -0,0 +1,27 @@
+import "package:http/http.dart" as http;
+import "dart:convert";
+
+class Instance {
+  // TODO: add other fields
+  final String version;
+
+  Instance({
+    required this.version,
+  });
+
+  factory Instance.fromJson(Map<String, dynamic> json) {
+    return Instance(
+      version: json["Version"],
+    );
+  }
+}
+
+Future<Instance> getInstance(String instanceURL) async {
+  final res = await http.get(Uri.parse("$instanceURL/info"));
+
+  final json = jsonDecode(res.body);
+
+  // TODO: handle errors
+
+  return Instance.fromJson(json);
+}
\ No newline at end of file
diff --git a/lib/models/login.dart b/lib/models/login.dart
new file mode 100644
index 0000000..6412921
--- /dev/null
+++ b/lib/models/login.dart
@@ -0,0 +1,66 @@
+import "package:http/http.dart" as http;
+import "dart:convert";
+
+import "package:openbills/models/user.dart";
+
+enum LoginMethod { email, username }
+
+extension LoginMethodString on LoginMethod {
+  String get value {
+    switch(this) {
+      case LoginMethod.username:
+        return "username";
+      case LoginMethod.email:
+        return "email";
+    }
+  }
+}
+
+class LoginRes {
+  final User user;
+  final String authToken;
+  final String refreshToken;
+
+  LoginRes({
+    required this.user,
+    required this.authToken,
+    required this.refreshToken,
+  });
+
+  factory LoginRes.fromJson(Map<String, dynamic> json) {
+    return LoginRes(
+      user: User.fromJson(json["data"]),
+      authToken: json["auth_token"],
+      refreshToken: json["refresh_token"],
+    );
+  }
+}
+
+Future<LoginRes> userSignIn(String accountName, method, password) async {
+  final res = await http.post(
+      Uri.parse("https://openbills.vidhukant.com/api/auth/signin"),
+      headers: <String, String> {
+        "Content-Type": "application/json; charset=UTF-8",
+      },
+      body: jsonEncode(<String, String> {
+        "AccountName": accountName,
+        "Method": method,
+        "Password": password,
+      })
+  );
+
+  final json = jsonDecode(res.body);
+
+  if (res.statusCode != 200) {
+    switch(res.statusCode) {
+      case 404:
+        throw "This user does not exist";
+      case 500:
+        throw "Internal Server Error";
+      default:
+        throw json["error"];
+    }
+  }
+
+  return LoginRes.fromJson(json);
+}
diff --git a/lib/models/user.dart b/lib/models/user.dart
new file mode 100644
index 0000000..07c2c09
--- /dev/null
+++ b/lib/models/user.dart
@@ -0,0 +1,61 @@
+import 'package:http/http.dart' as http;
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import "dart:convert";
+
+class User {
+  final int id;
+  String? createdAt;
+  String? updatedAt;
+  String? username;
+  String? email;
+  bool? isVerified;
+
+  User({
+    required this.id,
+    this.createdAt,
+    this.updatedAt,
+    this.username,
+    this.email,
+    this.isVerified
+  });
+
+  factory User.fromJson(Map<String, dynamic> json) {
+    return User(
+      id: json["ID"],
+      createdAt: json["CreatedAt"],
+      updatedAt: json["UpdatedAt"],
+      username: json["Username"],
+      email: json["Email"],
+      isVerified: json["IsVerified"]
+    );
+  }
+}
+
+Future<User> userSignUp(User newUser, String password) async {
+  final res = await http.post(
+    Uri.parse("https://openbills.vidhukant.com/api/auth/signup"),
+    headers: <String, String> {
+      "Content-Type": "application/json; charset=UTF-8",
+    },
+    body: jsonEncode(<String, String> {
+      "Username": newUser.username as String,
+      "Password": password,
+      "Email": newUser.email as String,
+    }),
+  );
+
+  final json = jsonDecode(res.body);
+
+  if (res.statusCode != 200) {
+    switch(res.statusCode) {
+      case 404:
+        throw "This user does not exist";
+      case 500:
+        throw "Internal Server Error";
+      default:
+        throw json["error"];
+    }
+  }
+
+  return User.fromJson(json["data"]);
+}
diff --git a/lib/screens/home.dart b/lib/screens/home.dart
new file mode 100644
index 0000000..474fc48
--- /dev/null
+++ b/lib/screens/home.dart
@@ -0,0 +1,26 @@
+import 'package:flutter/material.dart';
+import "login.dart";
+
+class HomeScreen extends StatelessWidget {
+	const HomeScreen({super.key});
+
+	@override
+	Widget build(BuildContext context) {
+		return Scaffold(
+			appBar: AppBar(
+				title: const Text("Home Page")
+			),
+			body: Center(
+				child: ElevatedButton(
+					child: const Text("Log In"),
+					onPressed: () {
+						Navigator.push(
+							context,
+							MaterialPageRoute(builder: (context) => const LoginScreen())
+						);
+					},
+				),
+			),
+		);
+	}
+}
diff --git a/lib/screens/login.dart b/lib/screens/login.dart
new file mode 100644
index 0000000..1a0db55
--- /dev/null
+++ b/lib/screens/login.dart
@@ -0,0 +1,200 @@
+import "package:flutter/material.dart";
+import "package:flutter_secure_storage/flutter_secure_storage.dart";
+
+import "package:openbills/models/login.dart";
+import "package:openbills/widgets/input_box.dart";
+import "package:openbills/widgets/snackbar.dart";
+import "package:openbills/screens/signup.dart";
+
+class LoginScreen extends StatelessWidget {
+	const LoginScreen({super.key});
+
+	@override
+	Widget build(BuildContext context) {
+		return Scaffold(
+			appBar: AppBar(
+				centerTitle: true,
+				title: const Image(
+					height: 50,
+					image: AssetImage("assets/images/logo.png"),
+				),
+			),
+			body: const Center(
+					child: SizedBox(
+						width: 500,
+						child: Body(),
+					)
+			),
+		);
+	}
+}
+
+class Body extends StatefulWidget {
+	const Body({super.key});
+
+	@override
+	State<Body> createState() => _BodyState();
+}
+
+class _BodyState extends State<Body> {
+	final accountNameController = TextEditingController();
+	final passwordController = TextEditingController();
+	LoginMethod? _method = LoginMethod.username;
+
+	final _storage = const FlutterSecureStorage();
+
+	@override
+	void dispose() {
+		accountNameController.dispose();
+		passwordController.dispose();
+		super.dispose();
+	}
+
+	@override
+	Widget build(BuildContext context) {
+		Size size = MediaQuery.sizeOf(context);
+		MainAxisAlignment alignment = MainAxisAlignment.center;
+
+		if (size.width < 700) {
+			alignment = MainAxisAlignment.spaceBetween;
+		}
+
+		if (size.height < 700) {
+			alignment = MainAxisAlignment.center;
+		}
+
+		return Column (
+			crossAxisAlignment: CrossAxisAlignment.center,
+			mainAxisAlignment: alignment,
+			children: <Widget> [
+				const Padding(
+					padding: EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+					child: Text(
+						"OpenBills Log In",
+						textAlign: TextAlign.center,
+						style: TextStyle(
+							fontWeight: FontWeight.bold,
+							fontSize: 30,
+						),
+					),
+				),
+
+				Column(
+					children: <Widget>[
+						FormInputBox(
+							controller: accountNameController,
+							hintText: _method == LoginMethod.email ? "E-Mail" : "Username",
+						),
+
+						Padding(
+							padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+							child: Column(
+								children: <Widget>[
+									const Text(
+										"Log in with:",
+										textAlign: TextAlign.left,
+										style: TextStyle(
+											fontSize: 18,
+										),
+									),
+
+									Row(
+										children: <Widget>[
+											Flexible(
+												child: RadioListTile<LoginMethod>(
+													title: const Text("username"),
+													value: LoginMethod.username,
+													groupValue: _method,
+													onChanged: (LoginMethod? value) {
+														setState(() {
+															_method = value;
+														});
+													},
+												),
+											),
+
+											Flexible(
+												child: RadioListTile<LoginMethod>(
+													title: const Text("email"),
+													value: LoginMethod.email,
+													groupValue: _method,
+													onChanged: (LoginMethod? value) {
+														setState(() {
+															_method = value;
+														});
+													},
+												),
+											),
+										],
+									),
+								],
+							)
+						),
+
+						FormInputBox(
+							controller: passwordController,
+							hintText: "Password",
+							obscureText: true,
+						),
+					],
+				),
+
+				Padding(
+					padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+					child: Row(
+						mainAxisAlignment: MainAxisAlignment.spaceBetween,
+						children: <Widget> [
+							TextButton(
+								onPressed: () {
+									Navigator.push(
+											context,
+											MaterialPageRoute(builder: (context) => const SignupScreen())
+									);
+								},
+								child: const Text("Don't have an account? Sign up.")
+							),
+
+							ElevatedButton(
+								onPressed: () async {
+									String name = accountNameController.text;
+									String? method = _method?.value;
+									String password = passwordController.text;
+
+									try {
+										LoginRes res = await userSignIn(name, method, password);
+										String? username = res.user.username;
+
+										await _storage.write(
+											key: "auth_token",
+											value: res.authToken,
+											aOptions: const AndroidOptions(
+												encryptedSharedPreferences: true,
+											),
+										);
+
+										await _storage.write(
+											key: "refresh_token",
+											value: res.refreshToken,
+											aOptions: const AndroidOptions(
+												encryptedSharedPreferences: true,
+											),
+										);
+
+										if (context.mounted) {
+											MySnackBar.show(context, "Hello, $username! Please restart the app to see the homepage.");
+										}
+									} on String catch(e) {
+										if (context.mounted) {
+											MySnackBar.show(context, "Error: $e");
+										}
+									}
+								},
+								child: const Text("Log In")
+							),
+						],
+					),
+				),
+			],
+		);
+	}
+}
\ No newline at end of file
diff --git a/lib/screens/signup.dart b/lib/screens/signup.dart
new file mode 100644
index 0000000..b155d8e
--- /dev/null
+++ b/lib/screens/signup.dart
@@ -0,0 +1,140 @@
+import "package:flutter/material.dart";
+
+import "package:openbills/models/user.dart";
+import "package:openbills/widgets/input_box.dart";
+import "package:openbills/widgets/snackbar.dart";
+
+class SignupScreen extends StatelessWidget {
+	const SignupScreen({super.key});
+
+	@override
+	Widget build(BuildContext context) {
+		return Scaffold(
+			appBar: AppBar(
+				centerTitle: true,
+				title: const Image(
+					height: 50,
+					image: AssetImage("assets/images/logo.png"),
+				),
+			),
+			body: const Center(
+				child: SizedBox(
+					width: 500,
+					child: Body(),
+				)
+			),
+		);
+	}
+}
+
+class Body extends StatefulWidget {
+	const Body({super.key});
+
+	@override
+	State<Body> createState() => _BodyState();
+}
+
+class _BodyState extends State<Body> {
+	final usernameController = TextEditingController();
+	final emailController = TextEditingController();
+	final passwordController = TextEditingController();
+
+	@override
+	void dispose() {
+		usernameController.dispose();
+		emailController.dispose();
+		passwordController.dispose();
+		super.dispose();
+	}
+
+	@override
+	Widget build(BuildContext context) {
+		Size size = MediaQuery.sizeOf(context);
+		MainAxisAlignment alignment = MainAxisAlignment.center;
+
+		if (size.width < 700) {
+			alignment = MainAxisAlignment.spaceBetween;
+		}
+
+		if (size.height < 700) {
+			alignment = MainAxisAlignment.center;
+		}
+
+		return Column (
+			crossAxisAlignment: CrossAxisAlignment.center,
+			mainAxisAlignment: alignment,
+			children: <Widget> [
+				const Padding(
+					padding: EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+					child: Text(
+						"OpenBills Sign Up",
+						textAlign: TextAlign.center,
+						style: TextStyle(
+							fontWeight: FontWeight.bold,
+							fontSize: 30,
+						),
+					),
+				),
+
+				Column(
+					children: <Widget>[
+						FormInputBox(
+							controller: usernameController,
+							hintText: "Username",
+						),
+
+						FormInputBox(
+							controller: emailController,
+							hintText: "E-mail",
+						),
+
+						FormInputBox(
+							controller: passwordController,
+							hintText: "Password",
+							obscureText: true,
+						),
+					],
+				),
+
+				Padding(
+					padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 16),
+					child: Row(
+						mainAxisAlignment: MainAxisAlignment.spaceBetween,
+						children: <Widget> [
+							TextButton(
+								onPressed: () {
+									Navigator.pop(context);
+								},
+								child: const Text("Already have an account? Sign in.")
+							),
+
+				      ElevatedButton(
+				      	onPressed: () async {
+									User u = User(
+										id: 0,
+										username: usernameController.text,
+										email: emailController.text,
+									);
+
+									try {
+										await userSignUp(u, passwordController.text);
+
+										if (context.mounted) {
+											MySnackBar.show(context, "Successfully created an account!");
+											Navigator.pop(context);
+										}
+									} on String catch (e) {
+										if (context.mounted) {
+											MySnackBar.show(context, "Error: $e");
+										}
+									}
+								},
+				      	child: const Text("Sign Up")
+				      ),
+						],
+					),
+				),
+			],
+		);
+	}
+}
\ No newline at end of file
diff --git a/lib/widgets/input_box.dart b/lib/widgets/input_box.dart
new file mode 100644
index 0000000..c035635
--- /dev/null
+++ b/lib/widgets/input_box.dart
@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+class FormInputBox extends StatefulWidget {
+  const FormInputBox({
+    super.key,
+    //this.textInputType,
+    required this.controller,
+    this.hintText = "",
+    this.obscureText = false,
+  });
+
+  //final TextInputType textInputType;
+  final String hintText;
+  final TextEditingController controller;
+  final bool obscureText;
+
+  @override
+  FormInputBoxState createState() => FormInputBoxState();
+}
+
+class FormInputBoxState extends State<FormInputBox> {
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 14),
+      child: TextFormField(
+        obscureText: widget.obscureText,
+        controller: widget.controller,
+        decoration: InputDecoration(
+          border: const OutlineInputBorder(),
+          hintText: widget.hintText,
+        ),
+      ),
+    );
+  }
+}
\ No newline at end of file
diff --git a/lib/widgets/snackbar.dart b/lib/widgets/snackbar.dart
new file mode 100644
index 0000000..8da41a1
--- /dev/null
+++ b/lib/widgets/snackbar.dart
@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+
+class MySnackBar {
+  final String message;
+
+  const MySnackBar({
+    required this.message,
+  });
+
+  static show(BuildContext context, String message) {
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Text(message),
+        behavior: SnackBarBehavior.floating,
+        width: 400.0,
+      ),
+    );
+  }
+}
\ No newline at end of file