from fastapi import FastAPI, HTTPException
from fastapi.responses import HTMLResponse
from fastapi.staticfiles import StaticFiles
import uvicorn
from game_logic import generate_dungeon

app = FastAPI()

# 掛載 static 資料夾，供前端靜態檔案存取
app.mount("/static", StaticFiles(directory="static"), name="static")

@app.get("/", response_class=HTMLResponse)
async def index():
    # 讀取並回傳 index.html
    with open("static/index.html", "r", encoding="utf-8") as f:
        html_content = f.read()
    return HTMLResponse(content=html_content)

@app.post("/api/new_game")
async def new_game():
    """
    新遊戲：初始化玩家狀態與隨機生成迷宮
    """
    game_state = {
        "level": 1,
        "exp": 0,
        "exp_next": 100,  # 初始升級所需經驗
        "skill_points": 0,
        "stats": {"physical": 10, "magic": 10, "defense": 10},
        "dungeon": generate_dungeon()
    }
    # 此處可依需求寫入資料庫或檔案存檔
    return game_state

@app.post("/api/level_up")
async def level_up(game_state: dict):
    """
    升級功能：
    - 檢查玩家經驗值是否足夠
    - 升級後經驗扣除、等級提升、技能點 +1，並將下一次所需經驗乘以 2
    """
    if game_state["exp"] >= game_state["exp_next"]:
        game_state["exp"] -= game_state["exp_next"]
        game_state["level"] += 1
        game_state["skill_points"] += 1
        game_state["exp_next"] *= 2
        return game_state
    else:
        raise HTTPException(status_code=400, detail="經驗值不足，無法升級")

# 本區塊僅供本地端測試使用，部署時 HuggingFace Spaces 會自動啟動 app 物件
if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8000)