6 files changed, 149 insertions, 0 deletions
diff --git a/frontend/src/routes/golf/watch/App.tsx b/frontend/src/routes/golf/watch/App.tsx
new file mode 100644
index 0000000..6649251
--- /dev/null
+++ b/frontend/src/routes/golf/watch/App.tsx
@@ -0,0 +1,77 @@
+import { useState, useEffect } from 'react';
+import useWebSocket, { ReadyState } from 'react-use-websocket';
+import Connecting from './apps/Connecting.jsx';
+import Waiting from './apps/Waiting.jsx';
+import Gaming from './apps/Gaming.jsx';
+import Failed from './apps/Failed.jsx';
+import type { WatchState } from './WatchState.js';
+
+type Props = {
+  gameId: number;
+};
+
+type WebSocketMessage =
+  { type: 'connect' }
+  | { type: 'prepare'; data: { problem: string } }
+  | { type: 'ready' }
+  | { type: 'start'; data: { startTime: string } }
+  | { type: 'finish'; data: { yourScore: number | null; opponentScore: number | null } }
+  | { type: 'score'; data: { score: number } }
+  | { type: 'code'; data: { code: string } }
+  | { type: 'watch'; data: { problem: string; scoreA: number | null; codeA: string; scoreB: number | null; codeB: string } }
+
+export default ({ gameId }: Props) => {
+  // const socketUrl = `wss://t.nil.ninja/iosdc/2024/sock/golf/${gameId}/watch/`;
+  const socketUrl = `ws://localhost:8002/sock/golf/${gameId}/watch/`;
+
+  const { lastJsonMessage, readyState } = useWebSocket<WebSocketMessage>(socketUrl);
+
+  const [watchState, setWatchState] = useState<WatchState>('connecting');
+
+  const [problem, setProblem] = useState<string | null>(null);
+
+  const [scoreA, setScoreA] = useState<number | null>(null);
+  const [codeA, setCodeA] = useState<string | null>(null);
+  const [scoreB, setScoreB] = useState<number | null>(null);
+  const [codeB, setCodeB] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (readyState === ReadyState.UNINSTANTIATED) {
+      setWatchState('failed');
+    } else if (readyState === ReadyState.CLOSING || readyState === ReadyState.CLOSED) {
+      if (watchState !== 'finished') {
+        setWatchState('failed');
+      }
+    } else if (readyState === ReadyState.CONNECTING) {
+      setWatchState('connecting');
+    } else if (readyState === ReadyState.OPEN) {
+      if (lastJsonMessage !== null) {
+        if (lastJsonMessage.type === 'watch') {
+          const { problem, scoreA: scoreA_, codeA: codeA_, scoreB: scoreB_, codeB: codeB_ } = lastJsonMessage.data;
+          setProblem(problem);
+          setScoreA(scoreA_);
+          setCodeA(codeA_);
+          setScoreB(scoreB_);
+          setCodeB(codeB_);
+          setWatchState('gaming');
+        } else {
+          setWatchState('failed');
+        }
+      } else {
+        setWatchState('waiting');
+      }
+    }
+  }, [readyState, lastJsonMessage]);
+
+  return (
+    <div>
+      <h1>Game #{gameId} watching</h1>
+      <div>
+        {watchState === 'connecting' ? (<Connecting gameId={gameId} />)
+          : watchState === 'waiting' ? (<Waiting gameId={gameId} />)
+            : watchState === 'gaming' || watchState === 'finished' ? (<Gaming gameId={gameId} problem={problem} scoreA={scoreA} codeA={codeA} scoreB={scoreB} codeB={codeB} />)
+              : (<Failed gameId={gameId} />)}
+      </div>
+    </div>
+  );
+};
diff --git a/frontend/src/routes/golf/watch/WatchState.ts b/frontend/src/routes/golf/watch/WatchState.ts
new file mode 100644
index 0000000..2e0b066
--- /dev/null
+++ b/frontend/src/routes/golf/watch/WatchState.ts
@@ -0,0 +1 @@
+export type WatchState = 'connecting' | 'waiting' | 'starting' | 'gaming' | 'finished' | 'failed';
diff --git a/frontend/src/routes/golf/watch/apps/Connecting.tsx b/frontend/src/routes/golf/watch/apps/Connecting.tsx
new file mode 100644
index 0000000..6f1f356
--- /dev/null
+++ b/frontend/src/routes/golf/watch/apps/Connecting.tsx
@@ -0,0 +1,11 @@
+type Props = {
+  gameId: number;
+};
+
+export default (_props: Props) => {
+  return (
+    <div>
+      接続中です......
+    </div>
+  );
+}
diff --git a/frontend/src/routes/golf/watch/apps/Failed.tsx b/frontend/src/routes/golf/watch/apps/Failed.tsx
new file mode 100644
index 0000000..70d3693
--- /dev/null
+++ b/frontend/src/routes/golf/watch/apps/Failed.tsx
@@ -0,0 +1,11 @@
+type Props = {
+  gameId: number;
+};
+
+export default (_props: Props) => {
+  return (
+    <div>
+      エラー
+    </div>
+  );
+}
diff --git a/frontend/src/routes/golf/watch/apps/Gaming.tsx b/frontend/src/routes/golf/watch/apps/Gaming.tsx
new file mode 100644
index 0000000..a17b71e
--- /dev/null
+++ b/frontend/src/routes/golf/watch/apps/Gaming.tsx
@@ -0,0 +1,38 @@
+type Props = {
+  gameId: number;
+  problem: string | null;
+  scoreA: number | null;
+  codeA: string | null;
+  scoreB: number | null;
+  codeB: string | null;
+};
+
+export default ({ problem, scoreA, codeA, scoreB, codeB }: Props) => {
+  return (
+    <>
+      <div style={{ display: 'flex', flexDirection: 'column' }}>
+        <div style={{ display: 'flex', flex: 1, justifyContent: 'center' }}>
+          {problem}
+        </div>
+        <div style={{ display: 'flex', flex: 3 }}>
+          <div style={{ display: 'flex', flex: 3, flexDirection: 'column' }}>
+            <div style={{ flex: 1, justifyContent: 'center' }}>
+              {scoreA}
+            </div>
+            <div style={{ flex: 3 }}>
+              <pre><code>{codeA}</code></pre>
+            </div>
+          </div>
+          <div style={{ display: 'flex', flex: 3, flexDirection: 'column' }}>
+            <div style={{ flex: 1, justifyContent: 'center' }}>
+              {scoreB}
+            </div>
+            <div style={{ flex: 3 }}>
+              <pre><code>{codeB}</code></pre>
+            </div>
+          </div>
+        </div>
+      </div>
+    </>
+  );
+};
diff --git a/frontend/src/routes/golf/watch/apps/Waiting.tsx b/frontend/src/routes/golf/watch/apps/Waiting.tsx
new file mode 100644
index 0000000..bd4f567
--- /dev/null
+++ b/frontend/src/routes/golf/watch/apps/Waiting.tsx
@@ -0,0 +1,11 @@
+type Props = {
+  gameId: number;
+};
+
+export default (_props: Props) => {
+  return (
+    <div>
+      対戦相手が現れるのを待っています......
+    </div>
+  );
+}