import pytest

from apps.tickets.services import TicketStatusError, validate_status_transition


def test_pending_ticket_can_move_to_in_progress():
    validate_status_transition("pending", "in_progress")


def test_in_progress_ticket_must_not_close_directly():
    with pytest.raises(TicketStatusError, match="in_progress -> closed"):
        validate_status_transition("in_progress", "closed")


def test_in_progress_ticket_must_not_resolve_directly():
    with pytest.raises(TicketStatusError, match="in_progress -> resolved"):
        validate_status_transition("in_progress", "resolved")


def test_resolved_ticket_cannot_move_back_to_in_progress():
    with pytest.raises(TicketStatusError, match="resolved -> in_progress"):
        validate_status_transition("resolved", "in_progress")


def test_business_ticket_can_resolve_directly_from_pending():
    validate_status_transition("pending", "resolved", "business_issue")


def test_technical_ticket_cannot_resolve_directly_from_pending():
    with pytest.raises(TicketStatusError, match="pending -> resolved"):
        validate_status_transition("pending", "resolved", "technical_issue")


def test_data_ticket_can_resolve_from_in_progress():
    validate_status_transition("in_progress", "resolved", "data_issue")