"""
KPI 管理系統 - FastAPI 主程式
"""
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import JSONResponse

from app.core.config import settings
from app.core.database import init_db
from app.api import (
    auth_router,
    kpi_router,
    dashboard_router,
    notifications_router,
    llm_router,
    gitea_router,
)

# 建立 FastAPI 應用程式
app = FastAPI(
    title=settings.APP_NAME,
    description="KPI 管理系統 API - 整合 Ollama LLM 與 Gitea 版本控制",
    version="1.0.0",
    docs_url="/docs",
    redoc_url="/redoc",
)

# CORS 設定
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],  # 生產環境應限制
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


# 全域例外處理
@app.exception_handler(Exception)
async def global_exception_handler(request: Request, exc: Exception):
    """全域例外處理器"""
    return JSONResponse(
        status_code=500,
        content={
            "error": {
                "code": "INTERNAL_ERROR",
                "message": "內部伺服器錯誤",
                "details": str(exc) if settings.DEBUG else None,
            }
        },
    )


# 註冊路由
app.include_router(auth_router)
app.include_router(kpi_router)
app.include_router(dashboard_router)
app.include_router(notifications_router)
app.include_router(llm_router)
app.include_router(gitea_router)


# 啟動事件
@app.on_event("startup")
async def startup_event():
    """應用程式啟動時初始化資料庫"""
    init_db()


# 健康檢查
@app.get("/health")
def health_check():
    """健康檢查端點"""
    return {"status": "healthy", "app": settings.APP_NAME}


# 根路徑
@app.get("/")
def root():
    """API 根路徑"""
    return {
        "app": settings.APP_NAME,
        "version": "1.0.0",
        "docs": "/docs",
        "features": [
            "KPI 管理",
            "員工績效考核",
            "Ollama LLM 整合",
            "Gitea 版本控制",
        ],
    }


if __name__ == "__main__":
    import uvicorn

    uvicorn.run("app.main:app", host="0.0.0.0", port=8000, reload=True)