feat: partially implement watching

1 files changed, 136 insertions, 0 deletions

diff --git a/frontend/app/components/GolfWatchApp.tsx b/frontend/app/components/GolfWatchApp.tsx
new file mode 100644
index 0000000..bcd1f0f
--- /dev/null
+++ b/frontend/app/components/GolfWatchApp.tsx
@@ -0,0 +1,136 @@
+import type { components } from "../.server/api/schema";
+import { useState, useEffect } from "react";
+import useWebSocket, { ReadyState } from "react-use-websocket";
+import GolfWatchAppConnecting from "./GolfWatchApps/GolfWatchAppConnecting";
+import GolfWatchAppWaiting from "./GolfWatchApps/GolfWatchAppWaiting";
+import GolfWatchAppStarting from "./GolfWatchApps/GolfWatchAppStarting";
+import GolfWatchAppGaming from "./GolfWatchApps/GolfWatchAppGaming";
+import GolfWatchAppFinished from "./GolfWatchApps/GolfWatchAppFinished";
+
+type WebSocketMessage = components["schemas"]["GameWatcherMessageS2C"];
+
+type Game = components["schemas"]["Game"];
+type Problem = components["schemas"]["Problem"];
+
+type GameState = "connecting" | "waiting" | "starting" | "gaming" | "finished";
+
+export default function GolfWatchApp({ game }: { game: Game }) {
+  // const socketUrl = `wss://t.nil.ninja/iosdc/2024/sock/golf/${game.game_id}/play`;
+  const socketUrl =
+    process.env.NODE_ENV === "development"
+      ? `ws://localhost:8002/sock/golf/${game.game_id}/play`
+      : `ws://api-server/sock/golf/${game.game_id}/play`;
+
+  const { lastJsonMessage, readyState } = useWebSocket<WebSocketMessage>(
+    socketUrl,
+    {},
+  );
+
+  const [gameState, setGameState] = useState<GameState>("connecting");
+
+  const [problem, setProblem] = useState<Problem | null>(null);
+
+  const [startedAt, setStartedAt] = useState<number | null>(null);
+
+  const [timeLeftSeconds, setTimeLeftSeconds] = useState<number | null>(null);
+
+  useEffect(() => {
+    if (gameState === "starting" && startedAt !== null) {
+      const timer1 = setInterval(() => {
+        setTimeLeftSeconds((prev) => {
+          if (prev === null) {
+            return null;
+          }
+          if (prev <= 1) {
+            clearInterval(timer1);
+            setGameState("gaming");
+            return 0;
+          }
+          return prev - 1;
+        });
+      }, 1000);
+
+      const timer2 = setInterval(() => {
+        const nowSec = Math.floor(Date.now() / 1000);
+        const finishedAt = startedAt + game.duration_seconds;
+        if (nowSec >= finishedAt) {
+          clearInterval(timer2);
+          setGameState("finished");
+        }
+      }, 1000);
+
+      return () => {
+        clearInterval(timer1);
+        clearInterval(timer2);
+      };
+    }
+  }, [gameState, startedAt, game.duration_seconds]);
+
+  const [scoreA, setScoreA] = useState<number | null>(null);
+  const [scoreB, setScoreB] = useState<number | null>(null);
+  const [codeA, setCodeA] = useState<string>("");
+  const [codeB, setCodeB] = useState<string>("");
+
+  if (readyState === ReadyState.UNINSTANTIATED) {
+    throw new Error("WebSocket is not connected");
+  }
+
+  useEffect(() => {
+    if (readyState === ReadyState.CLOSING || readyState === ReadyState.CLOSED) {
+      if (gameState !== "finished") {
+        setGameState("connecting");
+      }
+    } else if (readyState === ReadyState.CONNECTING) {
+      setGameState("connecting");
+    } else if (readyState === ReadyState.OPEN) {
+      if (lastJsonMessage !== null) {
+        console.log(lastJsonMessage.type);
+        if (lastJsonMessage.type === "watcher:s2c:start") {
+          if (
+            gameState !== "starting" &&
+            gameState !== "gaming" &&
+            gameState !== "finished"
+          ) {
+            const { start_at } = lastJsonMessage.data;
+            setStartedAt(start_at);
+            const nowSec = Math.floor(Date.now() / 1000);
+            setTimeLeftSeconds(start_at - nowSec);
+            setGameState("starting");
+          }
+        } else if (lastJsonMessage.type === "watcher:s2c:code") {
+          const { player_id, code } = lastJsonMessage.data;
+          setCodeA(code);
+        } else if (lastJsonMessage.type === "watcher:s2c:execresult") {
+          const { score } = lastJsonMessage.data;
+          if (score !== null && (scoreA === null || score < scoreA)) {
+            setScoreA(score);
+          }
+        }
+      } else {
+        setGameState("waiting");
+      }
+    }
+  }, [lastJsonMessage, readyState, gameState, scoreA]);
+
+  if (gameState === "connecting") {
+    return <GolfWatchAppConnecting />;
+  } else if (gameState === "waiting") {
+    return <GolfWatchAppWaiting />;
+  } else if (gameState === "starting") {
+    return <GolfWatchAppStarting timeLeft={timeLeftSeconds!} />;
+  } else if (gameState === "gaming") {
+    return (
+      <GolfWatchAppGaming
+        problem={problem!.description}
+        codeA={codeA}
+        scoreA={scoreA}
+        codeB={codeB}
+        scoreB={scoreB}
+      />
+    );
+  } else if (gameState === "finished") {
+    return <GolfWatchAppFinished />;
+  } else {
+    return null;
+  }
+}