initial commit

src/APIService.ts

@@ -0,0 +1,78 @@
+import {
+    User,
+    LoginResponse,
+    RegisterResponse,
+    SendMessageResponse,
+} from "./types.js";
+
+export class APIService {
+    private static readonly baseUrl = "http://webp-ilv-backend.cs.technikum-wien.at/messenger";
+
+    async register ( name: string, email: string, password: string, groupId: string): Promise<RegisterResponse> {
+        const formData = new FormData();
+        formData.append( "name", name );
+        formData.append( "email", email );
+        formData.append( "password", password );
+        formData.append( "group_id", groupId );
+
+        const response = await fetch( `${APIService.baseUrl}/registrieren.php`, {method: "POST", body: formData} );
+        if ( !response.ok ) {
+            throw new Error ( 'Registration failed: ' + response.statusText );
+        }
+
+        const text = await response.text();
+        let data: RegisterResponse;
+        try {
+            data = JSON.parse( text );
+        } catch {
+            console.error( "Non-JSON response from registrieren.php:", text );
+            throw new Error( "Registration failed: unexpected server response." );
+        }
+        return data;
+    }
+
+    async login ( usernameOrEmail: string, password: string): Promise <LoginResponse> {
+        const formData = new FormData();
+        formData.append( "username_or_email", usernameOrEmail );
+        formData.append( "password", password );
+
+        const response = await fetch( `${APIService.baseUrl}/login.php`, {method: "POST", body: formData} );
+
+        if ( !response.ok ) {
+            throw new Error ( 'Login failed: ' + response.statusText );
+        }
+
+        return await response.json();
+    }
+
+    async getUsers ( token: string, userId: string): Promise<User[]> {
+        const url = new URL( `${APIService.baseUrl}/get_users.php` );
+        url.searchParams.set( "token", token );
+        url.searchParams.set( "id", userId );
+
+        const response = await fetch ( url, {method: "GET"} );
+
+        if ( !response.ok ) {
+            throw new Error ( 'Failed to fetch users: ' + response.statusText );
+        }
+
+        return await response.json();
+    }
+
+    async sendMessage ( token: string, senderId: string, receiverId: string, message: string ): Promise <SendMessageResponse> {
+        const formData = new FormData();
+        formData.append( "token", token );
+        formData.append( "sender_id", senderId );
+        formData.append( "receiver_id", receiverId );
+        formData.append( "message", message );
+
+        const response = await fetch( `${APIService.baseUrl}/send_message.php`, {method: "POST", body: formData} );
+
+        if ( !response.ok ) {
+            throw new Error ( 'Failed to send message: ' + response.statusText );
+        }
+
+        return await response.json();
+    }
+}
+