Add microservices, web UI, and replay tooling

services/api/app.py

@@ -0,0 +1,360 @@
+from __future__ import annotations
+
+import asyncio
+from typing import Dict, Optional
+
+import httpx
+from fastapi import Depends, FastAPI, HTTPException, Request, WebSocket, WebSocketDisconnect
+from fastapi.middleware.cors import CORSMiddleware
+from sqlmodel import SQLModel, select
+from sqlalchemy.exc import IntegrityError
+
+from services.api.models import User
+from services.common.auth import create_token, decode_token, hash_password, verify_password
+from services.common.db import SessionLocal, engine
+from services.common.schemas import (
+    ActionRequest,
+    AddAIRequest,
+    CreateGameRequest,
+    JoinGameRequest,
+    TradeOfferRequest,
+    TradeRespondRequest,
+)
+from services.common.settings import settings
+
+app = FastAPI(title="Catan API Gateway")
+cors_origins = [origin.strip() for origin in settings.cors_origins.split(",") if origin.strip()]
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=cors_origins or ["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+clients: Dict[str, httpx.AsyncClient] = {}
+ws_connections: Dict[str, Dict[WebSocket, str]] = {}
+ai_tasks: Dict[str, asyncio.Task] = {}
+
+
+@app.on_event("startup")
+async def _startup() -> None:
+    SQLModel.metadata.create_all(engine)
+    clients["game"] = httpx.AsyncClient(base_url=settings.game_service_url)
+    clients["analytics"] = httpx.AsyncClient(base_url=settings.analytics_service_url)
+    clients["ai"] = httpx.AsyncClient(base_url=settings.ai_service_url)
+
+
+@app.on_event("shutdown")
+async def _shutdown() -> None:
+    for client in clients.values():
+        await client.aclose()
+
+
+def _get_current_user(request: Request) -> User:
+    auth = request.headers.get("authorization", "")
+    if not auth.lower().startswith("bearer "):
+        raise HTTPException(status_code=401, detail="Missing token")
+    token = auth.split(" ", 1)[1].strip()
+    try:
+        payload = decode_token(token)
+    except Exception:
+        raise HTTPException(status_code=401, detail="Invalid token")
+    user_id = payload.get("sub")
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Invalid token")
+    with SessionLocal() as session:
+        user = session.get(User, int(user_id))
+    if not user:
+        raise HTTPException(status_code=401, detail="Unknown user")
+    return user
+
+
+def _get_user_from_ws(websocket: WebSocket) -> User:
+    token = websocket.query_params.get("token")
+    if not token:
+        raise HTTPException(status_code=401, detail="Missing token")
+    try:
+        payload = decode_token(token)
+    except Exception:
+        raise HTTPException(status_code=401, detail="Invalid token")
+    user_id = payload.get("sub")
+    if not user_id:
+        raise HTTPException(status_code=401, detail="Invalid token")
+    with SessionLocal() as session:
+        user = session.get(User, int(user_id))
+    if not user:
+        raise HTTPException(status_code=401, detail="Unknown user")
+    return user
+
+
+def _mask_state_for_user(state: dict, username: str) -> dict:
+    data = dict(state)
+    game = data.get("game")
+    if not game:
+        return data
+    masked_players = {}
+    for name, info in game.get("players", {}).items():
+        pdata = dict(info)
+        if name != username:
+            resources = pdata.get("resources") or {}
+            total = sum(resources.values()) if isinstance(resources, dict) else 0
+            pdata["resources"] = {"hidden": total}
+        masked_players[name] = pdata
+    game["players"] = masked_players
+    data["game"] = game
+    return data
+
+
+async def _broadcast(game_id: str, state: dict) -> None:
+    connections = ws_connections.get(game_id, {})
+    dead = []
+    for ws, username in connections.items():
+        try:
+            await ws.send_json({"type": "state", "data": _mask_state_for_user(state, username)})
+        except Exception:
+            dead.append(ws)
+    for ws in dead:
+        connections.pop(ws, None)
+
+
+def _is_ai_only(state: dict) -> bool:
+    slots = state.get("players", [])
+    if not slots:
+        return False
+    return all(slot.get("is_ai") for slot in slots)
+
+
+async def _auto_advance(game_id: str) -> None:
+    while True:
+        response = await clients["game"].post(f"/games/{game_id}/advance")
+        if response.status_code >= 400:
+            break
+        state = response.json()
+        await _broadcast(game_id, state)
+        if state.get("status") != "running":
+            break
+        await asyncio.sleep(0.2)
+
+
+def _ensure_task(game_id: str) -> None:
+    if game_id in ai_tasks and not ai_tasks[game_id].done():
+        return
+    ai_tasks[game_id] = asyncio.create_task(_auto_advance(game_id))
+
+
+@app.get("/health")
+def health() -> dict:
+    return {"status": "ok"}
+
+
+@app.post("/api/auth/register")
+def register(payload: dict):
+    username = (payload.get("username") or "").strip()
+    password = (payload.get("password") or "").strip()
+    if not username or not password:
+        raise HTTPException(status_code=400, detail="Username and password required")
+    user = User(username=username, password_hash=hash_password(password))
+    with SessionLocal() as session:
+        session.add(user)
+        try:
+            session.commit()
+        except IntegrityError:
+            session.rollback()
+            raise HTTPException(status_code=400, detail="Username already exists")
+        session.refresh(user)
+    token = create_token(user.id, user.username)
+    return {"token": token, "username": user.username}
+
+
+@app.post("/api/auth/login")
+def login(payload: dict):
+    username = (payload.get("username") or "").strip()
+    password = (payload.get("password") or "").strip()
+    with SessionLocal() as session:
+        user = session.exec(select(User).where(User.username == username)).first()
+    if not user or not verify_password(password, user.password_hash):
+        raise HTTPException(status_code=401, detail="Invalid credentials")
+    token = create_token(user.id, user.username)
+    return {"token": token, "username": user.username}
+
+
+@app.get("/api/me")
+def me(user: User = Depends(_get_current_user)):
+    return {"id": user.id, "username": user.username}
+
+
+@app.get("/api/lobby")
+async def lobby(user: User = Depends(_get_current_user)):
+    response = await clients["game"].get("/games")
+    response.raise_for_status()
+    return response.json()
+
+
+@app.post("/api/games")
+async def create_game(payload: CreateGameRequest, user: User = Depends(_get_current_user)):
+    data = payload.model_dump()
+    data["created_by"] = user.username
+    response = await clients["game"].post("/games", json=data)
+    response.raise_for_status()
+    return response.json()
+
+
+@app.post("/api/games/{game_id}/join")
+async def join_game(game_id: str, user: User = Depends(_get_current_user)):
+    payload = JoinGameRequest(username=user.username, user_id=user.id)
+    response = await clients["game"].post(f"/games/{game_id}/join", json=payload.model_dump())
+    response.raise_for_status()
+    state = await clients["game"].get(f"/games/{game_id}")
+    state.raise_for_status()
+    await _broadcast(game_id, state.json())
+    return response.json()
+
+
+@app.post("/api/games/{game_id}/leave")
+async def leave_game(game_id: str, user: User = Depends(_get_current_user)):
+    payload = JoinGameRequest(username=user.username, user_id=user.id)
+    response = await clients["game"].post(f"/games/{game_id}/leave", json=payload.model_dump())
+    response.raise_for_status()
+    state = await clients["game"].get(f"/games/{game_id}")
+    state.raise_for_status()
+    await _broadcast(game_id, state.json())
+    return response.json()
+
+
+@app.post("/api/games/{game_id}/add-ai")
+async def add_ai(game_id: str, payload: AddAIRequest, user: User = Depends(_get_current_user)):
+    response = await clients["game"].post(f"/games/{game_id}/add_ai", json=payload.model_dump())
+    response.raise_for_status()
+    state = await clients["game"].get(f"/games/{game_id}")
+    state.raise_for_status()
+    await _broadcast(game_id, state.json())
+    return response.json()
+
+
+@app.post("/api/games/{game_id}/start")
+async def start_game(game_id: str, user: User = Depends(_get_current_user)):
+    response = await clients["game"].post(f"/games/{game_id}/start")
+    response.raise_for_status()
+    state = response.json()
+    await _broadcast(game_id, state)
+    if _is_ai_only(state):
+        _ensure_task(game_id)
+    return _mask_state_for_user(state, user.username)
+
+
+@app.get("/api/games/{game_id}")
+async def game_state(game_id: str, user: User = Depends(_get_current_user)):
+    response = await clients["game"].get(f"/games/{game_id}")
+    response.raise_for_status()
+    return _mask_state_for_user(response.json(), user.username)
+
+
+@app.post("/api/games/{game_id}/action")
+async def take_action(game_id: str, payload: dict, user: User = Depends(_get_current_user)):
+    action = payload.get("action") or {"type": payload.get("type"), "payload": payload.get("payload")}
+    req = ActionRequest(actor=user.username, action=action)
+    response = await clients["game"].post(f"/games/{game_id}/action", json=req.model_dump())
+    if response.status_code >= 400:
+        raise HTTPException(status_code=response.status_code, detail=response.json().get("detail"))
+    state = response.json()
+    await _broadcast(game_id, state)
+    if _is_ai_only(state):
+        _ensure_task(game_id)
+    return _mask_state_for_user(state, user.username)
+
+
+@app.post("/api/games/{game_id}/trade/offer")
+async def offer_trade(game_id: str, payload: TradeOfferRequest, user: User = Depends(_get_current_user)):
+    if payload.from_player != user.username:
+        raise HTTPException(status_code=403, detail="Not your player")
+    response = await clients["game"].post(f"/games/{game_id}/trade/offer", json=payload.model_dump())
+    response.raise_for_status()
+    state = await clients["game"].get(f"/games/{game_id}")
+    state.raise_for_status()
+    await _broadcast(game_id, state.json())
+    return response.json()
+
+
+@app.post("/api/games/{game_id}/trade/{trade_id}/respond")
+async def respond_trade(game_id: str, trade_id: str, payload: TradeRespondRequest, user: User = Depends(_get_current_user)):
+    if payload.player != user.username:
+        raise HTTPException(status_code=403, detail="Not your player")
+    response = await clients["game"].post(
+        f"/games/{game_id}/trade/{trade_id}/respond",
+        json=payload.model_dump(),
+    )
+    response.raise_for_status()
+    state = await clients["game"].get(f"/games/{game_id}")
+    state.raise_for_status()
+    await _broadcast(game_id, state.json())
+    return response.json()
+
+
+@app.get("/api/models")
+async def list_models(user: User = Depends(_get_current_user)):
+    response = await clients["ai"].get("/models")
+    response.raise_for_status()
+    return response.json()
+
+
+@app.get("/api/replays")
+async def list_replays(user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].get("/replays")
+    response.raise_for_status()
+    return response.json()
+
+
+@app.get("/api/replays/{replay_id}")
+async def replay_detail(replay_id: str, user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].get(f"/replays/{replay_id}")
+    response.raise_for_status()
+    return response.json()
+
+
+@app.get("/api/replays/{replay_id}/state")
+async def replay_state(replay_id: str, step: int = 0, user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].get(f"/replays/{replay_id}/state", params={"step": step})
+    response.raise_for_status()
+    return response.json()
+
+
+@app.get("/api/replays/{replay_id}/export")
+async def replay_export(replay_id: str, user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].get(f"/replays/{replay_id}/export")
+    response.raise_for_status()
+    return response.json()
+
+
+@app.post("/api/replays/import")
+async def replay_import(payload: dict, user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].post("/replays/import", json=payload)
+    if response.status_code >= 400:
+        raise HTTPException(status_code=response.status_code, detail=response.json().get("detail"))
+    return response.json()
+
+
+@app.get("/api/stats")
+async def stats(user: User = Depends(_get_current_user)):
+    response = await clients["analytics"].get("/stats", params={"user": user.username})
+    response.raise_for_status()
+    return response.json()
+
+
+@app.websocket("/ws/games/{game_id}")
+async def ws_game(websocket: WebSocket, game_id: str):
+    await websocket.accept()
+    try:
+        user = _get_user_from_ws(websocket)
+    except HTTPException:
+        await websocket.close(code=1008)
+        return
+    ws_connections.setdefault(game_id, {})[websocket] = user.username
+    try:
+        response = await clients["game"].get(f"/games/{game_id}")
+        if response.status_code == 200:
+            await websocket.send_json({"type": "state", "data": _mask_state_for_user(response.json(), user.username)})
+        while True:
+            await websocket.receive_text()
+    except WebSocketDisconnect:
+        ws_connections.get(game_id, {}).pop(websocket, None)