feat: phase 1C JWT UI, events/hosts API, Vue frontend

backend/app/api/v1/hosts.py

@@ -0,0 +1,59 @@
+from fastapi import APIRouter, Depends, Query
+from sqlalchemy import func, select
+from sqlalchemy.orm import Session
+
+from app.auth.jwt_auth import get_current_user
+from app.database import get_db
+from app.models import Event, Host
+from app.schemas.list_models import HostListResponse, HostSummary
+
+router = APIRouter(prefix="/hosts", tags=["hosts"])
+
+
+@router.get("", response_model=HostListResponse)
+def list_hosts(
+    page: int = Query(1, ge=1),
+    page_size: int = Query(50, ge=1, le=200),
+    product: str | None = None,
+    hostname: str | None = None,
+    db: Session = Depends(get_db),
+    _user: str = Depends(get_current_user),
+) -> HostListResponse:
+    stmt = select(Host)
+    count_stmt = select(func.count()).select_from(Host)
+
+    if product:
+        stmt = stmt.where(Host.product == product)
+        count_stmt = count_stmt.where(Host.product == product)
+    if hostname:
+        like = f"%{hostname}%"
+        stmt = stmt.where(Host.hostname.ilike(like))
+        count_stmt = count_stmt.where(Host.hostname.ilike(like))
+
+    total = db.scalar(count_stmt) or 0
+    rows = db.scalars(
+        stmt.order_by(Host.last_seen_at.desc())
+        .offset((page - 1) * page_size)
+        .limit(page_size)
+    ).all()
+
+    items: list[HostSummary] = []
+    for host in rows:
+        event_count = db.scalar(
+            select(func.count()).select_from(Event).where(Event.host_id == host.id)
+        )
+        items.append(
+            HostSummary(
+                id=host.id,
+                hostname=host.hostname,
+                display_name=host.display_name,
+                os_family=host.os_family,
+                product=host.product,
+                product_version=host.product_version,
+                ipv4=host.ipv4,
+                last_seen_at=host.last_seen_at,
+                event_count=int(event_count or 0),
+            )
+        )
+
+    return HostListResponse(items=items, total=total, page=page, page_size=page_size)