feat: Add API to retrieve authentication status and display user game opinions with colored borders in the game list.

frontend/src/GameList.tsx

@@ -1,7 +1,13 @@
 import { useState, useEffect } from "react";
-import { Game, Source, GameList as GameListProto } from "../items";
+import {
+  Game,
+  Source,
+  GameList as GameListProto,
+  Person as PersonProto,
+  Opinion,
+} from "../items";
 import { Link } from "react-router-dom";
-import { apiFetch } from "./api";
+import { apiFetch, get_auth_status } from "./api";
 import { GameImage } from "./GameImage";
 
 export function GameList() {
@@ -14,6 +20,7 @@ export function GameList() {
   const [remoteId, setRemoteId] = useState(0);
   const [message, setMessage] = useState("");
   const [isSubmitting, setIsSubmitting] = useState(false);
+  const [opinions, setOpinions] = useState<Opinion[]>([]);
 
   const fetchGames = () => {
     apiFetch("/api/games")
@@ -29,6 +36,22 @@ export function GameList() {
       .catch(console.error);
   };
 
+  useEffect(() => {
+    get_auth_status().then((user) => {
+      apiFetch(`/api/${user?.username}`)
+        .then((res) => res.arrayBuffer())
+        .then((buffer) => {
+          try {
+            const person = PersonProto.decode(new Uint8Array(buffer));
+            const opinions = person.opinion;
+            setOpinions(opinions);
+          } catch (e) {
+            console.error("Failed to decode games:", e);
+          }
+        });
+    });
+  }, []);
+
   useEffect(() => {
     fetchGames();
   }, []);
@@ -365,7 +388,7 @@ export function GameList() {
 
               <div style={gridStyles}>
                 <div style={inputGroupStyles}>
-                  <label style={labelStyles}>Price ($)</label>
+                  <label style={labelStyles}>Price (€)</label>
                   <input
                     type="number"
                     value={price}
@@ -432,23 +455,31 @@ export function GameList() {
       <div style={{ marginTop: "3rem" }}>
         <h3>Existing Games</h3>
         <ul className="grid-container">
-          {games.map((game) => (
-            <Link
-              to={`/game/${encodeURIComponent(game.title)}`}
-              key={game.title}
-              className="list-item"
-              style={{
-                textDecoration: "none",
-                color: "inherit",
-                display: "flex",
-                justifyContent: "space-between",
-                alignItems: "center",
-              }}
-            >
-              <strong>{game.title}</strong>
-              <GameImage game={game.title} />
-            </Link>
-          ))}
+          {games.map((game) => {
+            const opinion = opinions.find((op) => op.title === game.title);
+            return (
+              <Link
+                to={`/game/${encodeURIComponent(game.title)}`}
+                key={game.title}
+                className="list-item"
+                style={{
+                  textDecoration: "none",
+                  color: "inherit",
+                  display: "flex",
+                  justifyContent: "space-between",
+                  alignItems: "center",
+                  borderColor: opinion
+                    ? opinion.wouldPlay
+                      ? "#4caf50" // would play (green)
+                      : "#f44336" // would not play (red)
+                    : "#191f2e", // no opinion (bg-2)
+                }}
+              >
+                <strong>{game.title}</strong>
+                <GameImage game={game.title} />
+              </Link>
+            );
+          })}
         </ul>
       </div>
     </div>

frontend/src/PersonDetails.tsx

@@ -1,14 +1,7 @@
 import { useState, useEffect } from "react";
 import { Link, useParams } from "react-router-dom";
-import {
-  Person,
-  AddOpinionRequest,
-  Game,
-  GameList,
-  AuthStatusRequest,
-  AuthStatusResponse,
-} from "../items";
-import { apiFetch } from "./api";
+import { Person, AddOpinionRequest, Game, GameList } from "../items";
+import { apiFetch, get_auth_status } from "./api";
 import { GameImage } from "./GameImage";
 
 export const PersonDetails = () => {
@@ -20,31 +13,14 @@ export const PersonDetails = () => {
   const [currentUser, setCurrentUser] = useState<string>("");
 
   useEffect(() => {
-    const token = localStorage.getItem("token");
-    if (token) {
-      const req = AuthStatusRequest.create({ token });
-      const buffer = AuthStatusRequest.encode(req).finish();
-
-      apiFetch("/auth/get_auth_status", {
-        method: "POST",
-        headers: {
-          "Content-Type": "application/octet-stream",
-        },
-        body: buffer,
-      })
-        .then((res) => res.arrayBuffer())
-        .then((buffer) => {
-          try {
-            const response = AuthStatusResponse.decode(new Uint8Array(buffer));
-            if (response.authenticated) {
-              setCurrentUser(response.username);
-            }
-          } catch (e) {
-            console.error("Failed to decode auth status:", e);
-          }
-        })
-        .catch(console.error);
+    async function fetchUser() {
+      const token = localStorage.getItem("token");
+      if (token) {
+        const authStatus = await get_auth_status();
+        setCurrentUser(authStatus?.username || "");
+      }
     }
+    fetchUser();
   }, []);
 
   useEffect(() => {

frontend/src/api.ts

@@ -1,3 +1,5 @@
+import { AuthStatusRequest, AuthStatusResponse } from "../items";
+
 export const apiFetch = async (
   url: string,
   options: RequestInit = {}
@@ -26,3 +28,24 @@ export const apiFetch = async (
 
   return response;
 };
+
+export const get_auth_status = async (): Promise<AuthStatusResponse | null> => {
+  const token = localStorage.getItem("token") as string;
+  const req = AuthStatusRequest.create({ token });
+  const req_buffer = AuthStatusRequest.encode(req).finish();
+  const response = await apiFetch("/auth/get_auth_status", {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/octet-stream",
+    },
+    body: req_buffer,
+  });
+  const buffer = await response.arrayBuffer();
+  try {
+    const response = AuthStatusResponse.decode(new Uint8Array(buffer));
+    return response;
+  } catch (e) {
+    console.error("Failed to decode auth status:", e);
+    return null;
+  }
+};