"""
CoolBotDataSys API 服务
酷博特数据分析系统 RESTful API

版本: 1.0.0
"""
import logging
from contextlib import asynccontextmanager
from fastapi import FastAPI, Request, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse

from api.routes import collections_router, prices_router, health_router, yichens_router
from api.middleware.response import ApiResponse

# 配置日志
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
)
logger = logging.getLogger(__name__)

@asynccontextmanager
async def lifespan(app: FastAPI):
    """应用生命周期管理"""
    logger.info("🚀 CoolBotDataSys API 启动...")
    yield
    logger.info("👋 CoolBotDataSys API 关闭...")

# 创建 FastAPI 应用
app = FastAPI(
    title="CoolBotDataSys API",
    description="""
## CoolBotDataSys - 酷博特数据分析系统

### 功能模块
- **藏品管理** - 藏品的 CRUD 操作
- **价格追踪** - 历史价格查询和趋势分析
- **爬虫调度** - 数据采集任务管理
- **统计报表** - 数据统计和报表生成

### 认证方式
当前版本暂不需要认证，后续添加 API Key 认证。
    """,
    version="1.0.0",
    lifespan=lifespan,
    docs_url="/docs",
    redoc_url="/redoc"
)

# CORS 配置
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# 全局异常处理
@app.exception_handler(HTTPException)
async def http_exception_handler(request: Request, exc: HTTPException):
    """HTTP 异常处理"""
    return JSONResponse(
        status_code=exc.status_code,
        content=ApiResponse.error(
            code=exc.status_code * 100,
            message=exc.detail
        ).model_dump()
    )

@app.exception_handler(Exception)
async def general_exception_handler(request: Request, exc: Exception):
    """通用异常处理"""
    logger.error(f"未处理异常: {exc}", exc_info=True)
    return JSONResponse(
        status_code=500,
        content=ApiResponse.error(
            code=50000,
            message="Internal server error"
        ).model_dump()
    )

# 注册路由
app.include_router(health_router)
app.include_router(yichens_router)
app.include_router(collections_router)
app.include_router(prices_router)

# 统计接口
from api.middleware.response import ApiResponse
from database import db

@app.get("/api/v1/statistics", response_model=ApiResponse, tags=["statistics"])
async def get_statistics():
    """获取系统统计信息"""
    with db.get_cursor() as cursor:
        # 藏品总数
        cursor.execute("SELECT COUNT(*) as cnt FROM collections")
        total_collections = cursor.fetchone()["cnt"]
        
        # 价格记录总数
        cursor.execute("SELECT COUNT(*) as cnt FROM price_history")
        total_price_records = cursor.fetchone()["cnt"]
        
        # 今日新增价格记录
        cursor.execute("""
            SELECT COUNT(*) as cnt FROM price_history 
            WHERE DATE(crawled_at) = CURDATE()
        """)
        today_price_records = cursor.fetchone()["cnt"]
        
        # 最近爬虫运行时间
        cursor.execute("""
            SELECT MAX(finished_at) as last_run 
            FROM crawl_logs WHERE status = 'success'
        """)
        last_crawl = cursor.fetchone()["last_run"]
        
        # 分类统计
        cursor.execute("""
            SELECT category, COUNT(*) as count 
            FROM collections 
            WHERE category IS NOT NULL
            GROUP BY category
        """)
        category_stats = {row["category"]: row["count"] for row in cursor.fetchall()}
    
    return ApiResponse.success({
        "total_collections": total_collections,
        "total_price_records": total_price_records,
        "today_price_records": today_price_records,
        "last_crawl_time": last_crawl,
        "category_stats": category_stats
    })

# 爬虫调度接口
from crawlers.yichens_spider import YichensSpider

@app.post("/api/v1/crawl-jobs/trigger", response_model=ApiResponse, tags=["crawl"])
async def trigger_crawl(source: str = "yichens"):
    """触发爬虫任务"""
    if source == "yichens":
        spider = YichensSpider()
        items = spider.run()
        return ApiResponse.success({
            "source": source,
            "items_collected": len(items),
            "status": "completed"
        }, "Crawl job triggered successfully")
    else:
        raise HTTPException(status_code=400, detail=f"Unknown source: {source}")

@app.get("/api/v1/crawl-jobs", response_model=ApiResponse, tags=["crawl"])
async def get_crawl_jobs(limit: int = 20):
    """获取爬虫运行历史"""
    with db.get_cursor() as cursor:
        cursor.execute("""
            SELECT * FROM crawl_logs 
            ORDER BY finished_at DESC LIMIT %s
        """, (limit,))
        items = cursor.fetchall()
    return ApiResponse.success(items)


if __name__ == "__main__":
    import uvicorn
    uvicorn.run(app, host="0.0.0.0", port=8080)