-- Remove historical task lifecycle notices that do not require user action.

BEGIN;

CREATE TEMP TABLE notification_cleanup_projects ON COMMIT DROP AS
SELECT
    project_id,
    count(*)::bigint AS removed_count
FROM workbench.operational_task_notifications
WHERE document->>'kind' IN ('task_created', 'report_updated', 'task_completed')
GROUP BY project_id;

DELETE FROM workbench.operational_task_notifications
WHERE document->>'kind' IN ('task_created', 'report_updated', 'task_completed');

WITH inserted_events AS (
    INSERT INTO workbench.domain_event_log (
        project_id,
        event_id,
        topic,
        aggregate_type,
        aggregate_id,
        aggregate_revision,
        metadata
    )
    SELECT
        project_id,
        (
            substr(md5(project_id::text || ':notification-routing-v1'), 1, 8)
            || '-' || substr(md5(project_id::text || ':notification-routing-v1'), 9, 4)
            || '-5' || substr(md5(project_id::text || ':notification-routing-v1'), 14, 3)
            || '-a' || substr(md5(project_id::text || ':notification-routing-v1'), 18, 3)
            || '-' || substr(md5(project_id::text || ':notification-routing-v1'), 21, 12)
        )::uuid,
        'operational.notification.changed',
        'operational_notification_batch',
        project_id::text,
        removed_count,
        jsonb_build_object(
            'change', 'batch_pruned',
            'reason', 'non_actionable_notification_cleanup',
            'removed_count', removed_count
        )
    FROM notification_cleanup_projects
    ON CONFLICT (project_id, event_id) DO NOTHING
    RETURNING project_id, event_seq
)
SELECT pg_notify('workbench_events', project_id::text || ':' || event_seq::text)
FROM inserted_events;

COMMIT;