"""The Monitors tab split: a panel in a group no tab renders disappears.

This has silently eaten cards twice - once when tracked services moved out of
'actions', once on the 'metrics' to 'monitors' rename. Both times the backend
named a group the frontend did not render, and the panel was not shown, not
logged, and not missed until someone went looking for it.

The split is only correct if four places agree, and only two of them are Python:
  1. the panels' group here
  2. RENDERED_GROUPS in PluginAssetPanels.vue
  3. the tab label map in PCDetail.vue
  4. the v-show block that gives the tab a layout

These tests pin the Python half so a later edit cannot quietly move a panel into
a group nothing renders. The frontend half is pinned by its own spec.
"""

from plugins.endpoints.plugin import EndpointsPlugin


# Must match RENDERED_GROUPS in frontend/src/components/PluginAssetPanels.vue.
# A panel in any group not listed here is fetched, held, and shown nowhere.
RENDERED_GROUPS = {'details', 'monitors', 'serviceprocess', 'software',
                   'activity'}


def _panels():
    return {panel['id']: panel for panel in EndpointsPlugin().get_asset_panels()}


def test_no_panel_lands_in_a_group_the_frontend_does_not_render():
    """The failure mode that ate cards twice: a group with no tab."""
    for panel in EndpointsPlugin().get_asset_panels():
        group = panel.get('group', 'details')
        assert group in RENDERED_GROUPS, (
            f"panel {panel['id']} is in group {group!r}, which no tab renders"
        )


def test_tracked_services_and_processes_moved_to_their_own_group():
    panels = _panels()

    assert panels['endpoints-tracked-services']['group'] == 'serviceprocess'
    assert panels['endpoints-tracked-processes']['group'] == 'serviceprocess'


def test_the_service_process_tab_is_not_left_empty():
    """A tab whose panels all moved away reads as broken, not as absent."""
    groups = [panel.get('group', 'details')
              for panel in EndpointsPlugin().get_asset_panels()]

    assert 'serviceprocess' in groups


def test_system_monitors_keeps_panels_of_its_own():
    """The rename is only safe if Monitors still has content after the move."""
    groups = [panel.get('group', 'details')
              for panel in EndpointsPlugin().get_asset_panels()]

    assert 'monitors' in groups


def test_disk_health_stayed_with_the_system_health_panels():
    """Disk health is the box's own health, not something running on it."""
    assert _panels()['endpoints-diskhealth']['group'] == 'monitors'