from __future__ import annotations
import json
from quart import Blueprint, render_template, request, current_app
from sqlalchemy import select
from steward.auth.middleware import require_role
from steward.models.audit import AuditEvent
from steward.models.users import UserRole

audit_bp = Blueprint("audit", __name__, url_prefix="/audit")


@audit_bp.get("/")
@require_role(UserRole.admin)
async def list_events():
    limit = min(int(request.args.get("limit", 200)), 500)
    action_filter = request.args.get("action", "").strip()
    async with current_app.db_sessionmaker() as db:
        stmt = select(AuditEvent).order_by(AuditEvent.timestamp.desc()).limit(limit)
        if action_filter:
            stmt = select(AuditEvent).where(
                AuditEvent.action.like(f"{action_filter}%")
            ).order_by(AuditEvent.timestamp.desc()).limit(limit)
        result = await db.execute(stmt)
        events = result.scalars().all()

    # Parse detail_json for display
    parsed = []
    for e in events:
        detail = {}
        if e.detail_json:
            try:
                detail = json.loads(e.detail_json)
            except (ValueError, TypeError):
                detail = {"raw": e.detail_json}
        parsed.append({"event": e, "detail": detail})

    return await render_template(
        "audit/list.html",
        events=parsed,
        limit=limit,
        action_filter=action_filter,
    )