"""API request/response log viewer (admin only)."""
from datetime import datetime, timedelta

from fastapi import APIRouter, Depends, Request
from fastapi.responses import RedirectResponse
from sqlalchemy.orm import Session

from web.auth.session import get_current_user
from web.database import get_db
from web.models.connections import ApiLog
from web.templates_env import templates

router = APIRouter()

PAGE_SIZE = 50


def _render(request, template, ctx):
    return templates.TemplateResponse(template, {"request": request, **ctx})


@router.get("/admin/logs")
async def admin_logs(
    request: Request,
    db: Session = Depends(get_db),
    service: str = "",
    method: str = "",
    status: str = "",
    q: str = "",
    page: int = 1,
    hours: int = 168,
):
    try:
        user = get_current_user(request, db)
    except Exception:
        return RedirectResponse("/login", 303)

    since = datetime.utcnow() - timedelta(hours=hours)
    query = db.query(ApiLog).filter(ApiLog.created_at >= since)

    if service:
        query = query.filter(ApiLog.service == service)
    if method:
        query = query.filter(ApiLog.method == method)
    if status:
        try:
            st = int(status)
            query = query.filter(ApiLog.response_status == st)
        except ValueError:
            if status == "error":
                query = query.filter(ApiLog.response_status >= 400)
            elif status == "ok":
                query = query.filter(ApiLog.response_status < 400)
    if q:
        like = f"%{q}%"
        query = query.filter(
            ApiLog.url.like(like) | ApiLog.response_body.like(like)
        )

    total = query.count()
    logs = (
        query.order_by(ApiLog.created_at.desc())
        .offset((page - 1) * PAGE_SIZE)
        .limit(PAGE_SIZE)
        .all()
    )
    total_pages = max(1, (total + PAGE_SIZE - 1) // PAGE_SIZE)

    return _render(request, "admin/logs.html", {
        "user": user,
        "logs": logs,
        "total": total,
        "page": page,
        "total_pages": total_pages,
        "page_size": PAGE_SIZE,
        "filter_service": service,
        "filter_method": method,
        "filter_status": status,
        "filter_q": q,
        "filter_hours": hours,
    })