-- topology_api/migrations/003_indexes.sql
-- Performance indexes for snapshot queries

-- missions lookup
CREATE INDEX IF NOT EXISTS idx_missions_base_status
    ON topology.missions(base_id, occurrence_status);

-- events time ordering
CREATE INDEX IF NOT EXISTS idx_events_mission_time
    ON topology.mission_events(mission_id, effective_at DESC, event_order DESC);
CREATE INDEX IF NOT EXISTS idx_events_effective_time
    ON topology.mission_events(effective_at DESC);

-- components lookup
CREATE INDEX IF NOT EXISTS idx_components_base
    ON topology.components(base_id);

-- versions time range
CREATE INDEX IF NOT EXISTS idx_versions_component_time
    ON topology.component_versions(component_id, valid_from DESC);
CREATE INDEX IF NOT EXISTS idx_versions_current
    ON topology.component_versions(component_id) WHERE valid_to IS NULL;

-- states time range
CREATE INDEX IF NOT EXISTS idx_states_component_kind_time
    ON topology.component_states(component_id, state_kind, valid_from DESC);
CREATE INDEX IF NOT EXISTS idx_states_current
    ON topology.component_states(component_id, state_kind) WHERE valid_to IS NULL;

-- connections time range
CREATE INDEX IF NOT EXISTS idx_connections_base_time
    ON topology.topology_connections(base_id, valid_from DESC);
CREATE INDEX IF NOT EXISTS idx_connections_current
    ON topology.topology_connections(base_id) WHERE valid_to IS NULL;

-- ports
CREATE INDEX IF NOT EXISTS idx_ports_component
    ON topology.ports(component_id);