3 files changed, 154 insertions, 0 deletions
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"]);
+}