"""仪表盘统计 API"""
from fastapi import APIRouter, Depends
from sqlalchemy.orm import Session
from sqlalchemy import func, text
from database import get_db
from health_checker import get_overall_stats, get_feed_health

router = APIRouter(prefix="/dashboard", tags=["dashboard"])


@router.get("/stats")
def dashboard_stats(db: Session = Depends(get_db)):
    """仪表盘统计数据"""
    return get_overall_stats(db)


@router.get("/health")
def dashboard_health(
    skip: int = 0,
    limit: int = 100,
    db: Session = Depends(get_db),
):
    """RSS 源健康度列表"""
    all_health = get_feed_health(db)
    total = len(all_health)

    # 按健康状态排序：异常在前
    status_order = {"unhealthy": 0, "warning": 1, "unknown": 2, "healthy": 3}
    all_health.sort(key=lambda x: status_order.get(x["health_status"], 2))

    items = all_health[skip:skip + limit]
    return {"total": total, "items": items}


@router.get("/articles-daily")
def articles_daily(days: int = 30, db: Session = Depends(get_db)):
    """按发布日期统计文章数量"""
    from models import Article
    sql = text("""
        SELECT DATE(published_at) as date, COUNT(*) as count
        FROM articles
        WHERE published_at IS NOT NULL
          AND published_at >= DATE('now', '-' || :days || ' days')
        GROUP BY DATE(published_at)
        ORDER BY date DESC
    """)
    rows = db.execute(sql, {"days": days}).fetchall()
    return {
        "days": days,
        "data": [{"date": str(r[0]), "count": r[1]} for r in rows],
    }


@router.get("/recent-activity")
def recent_activity(limit: int = 20, db: Session = Depends(get_db)):
    """最近的抓取活动"""
    from models import FetchLog, Feed
    from sqlalchemy import desc

    logs = db.query(FetchLog, Feed.title.label("feed_title")).join(Feed).order_by(
        desc(FetchLog.created_at)
    ).limit(limit).all()

    return {
        "items": [
            {
                "id": log.id,
                "feed_id": log.feed_id,
                "feed_title": feed_title or "",
                "status": log.status,
                "articles_fetched": log.articles_fetched,
                "response_time_ms": log.response_time_ms,
                "error_message": log.error_message,
                "created_at": log.created_at.isoformat(),
            }
            for log, feed_title in logs
        ]
    }