from apps.tickets.models import Ticket, TicketEvent


def test_create_ticket_returns_ticket_detail(admin_client, db):
    response = admin_client.post(
        "/api/tickets",
        data={
            "title": "Payment callback fails",
            "description": "Callback returns HTTP 500 in production",
            "priority": "high",
            "impact_scope": "payment users",
            "environment": "production",
            "related_system": "payment",
        },
        content_type="application/json",
    )

    assert response.status_code == 200
    payload = response.json()
    assert payload["ticket_no"].startswith("TK")
    assert payload["title"] == "Payment callback fails"
    assert payload["status"] == "pending"
    assert TicketEvent.objects.filter(ticket_id=payload["id"], event_type="created").exists()


def test_list_tickets_filters_by_status(admin_client, db):
    Ticket.objects.create(ticket_no="TK202606300001", title="A", description="A", status="pending")
    Ticket.objects.create(ticket_no="TK202606300002", title="B", description="B", status="resolved")

    response = admin_client.get("/api/tickets?status=pending")

    assert response.status_code == 200
    payload = response.json()
    assert len(payload) == 1
    assert payload[0]["ticket_no"] == "TK202606300001"


def test_transition_ticket_status_creates_event(admin_client, db):
    ticket = Ticket.objects.create(
        ticket_no="TK202606300003",
        title="A",
        description="A",
        status="pending",
    )

    response = admin_client.post(
        f"/api/tickets/{ticket.id}/status",
        data={"status": "in_progress", "remark": "Start handling"},
        content_type="application/json",
    )

    assert response.status_code == 200
    ticket.refresh_from_db()
    assert ticket.status == "in_progress"
    assert ticket.events.filter(event_type="status_change").exists()