--liquibase formatted sql
-- PANELS · core · vigencia documental desde la fecha de carga

--changeset panel:core-032a-doc-types-no-required-dates endDelimiter:; splitStatements:true
UPDATE core.document_types
   SET requires_issued_at = false,
       requires_expires_at = false;

--changeset panel:core-032b-fn-worker-eval-doc-validity splitStatements:false
CREATE OR REPLACE FUNCTION core._worker_eval_doc_validity(
  p_policy jsonb,
  p_doc jsonb,
  p_ctx jsonb,
  p_today date
)
RETURNS jsonb
LANGUAGE plpgsql
IMMUTABLE
AS $$
DECLARE
  v_mode text := COALESCE(p_policy->>'validity_mode', 'none');
  v_issued date;
  v_expires date;
  v_uploaded date;
  v_need_fresh boolean;
  v_days integer;
BEGIN
  IF p_doc IS NULL THEN
    RETURN jsonb_build_object(
      'present', false,
      'valid', false,
      'validity_status', 'missing',
      'issued_at', NULL,
      'expires_at', NULL
    );
  END IF;
  v_issued := NULLIF(p_doc->>'issued_at', '')::date;
  v_expires := NULLIF(p_doc->>'expires_at', '')::date;
  BEGIN
    v_uploaded := COALESCE(
      NULLIF(left(p_doc->>'uploaded_at', 10), '')::date,
      NULL
    );
  EXCEPTION WHEN OTHERS THEN
    v_uploaded := NULL;
  END;
  v_need_fresh := core._worker_freshness_required(p_ctx);
  IF v_mode = 'expiry' THEN
    IF v_expires IS NOT NULL AND v_expires < p_today THEN
      RETURN jsonb_build_object(
        'present', true,
        'valid', false,
        'validity_status', 'expired',
        'issued_at', v_issued,
        'expires_at', v_expires
      );
    END IF;
    RETURN jsonb_build_object(
      'present', true,
      'valid', true,
      'validity_status', 'ok',
      'issued_at', v_issued,
      'expires_at', v_expires
    );
  END IF;
  IF v_mode = 'freshness' THEN
    IF v_need_fresh AND v_uploaded IS NOT NULL THEN
      v_days := COALESCE((p_policy->>'freshness_days')::integer, 90);
      IF (p_today - v_uploaded) > v_days THEN
        RETURN jsonb_build_object(
          'present', true,
          'valid', false,
          'validity_status', 'stale_for_alta',
          'issued_at', v_issued,
          'expires_at', v_expires
        );
      END IF;
    END IF;
    RETURN jsonb_build_object(
      'present', true,
      'valid', true,
      'validity_status', 'ok',
      'issued_at', v_issued,
      'expires_at', v_expires
    );
  END IF;
  RETURN jsonb_build_object(
    'present', true,
    'valid', true,
    'validity_status', 'ok',
    'issued_at', v_issued,
    'expires_at', v_expires
  );
END;
$$;

--changeset panel:core-032c-grants endDelimiter:; splitStatements:true
GRANT EXECUTE ON FUNCTION core._worker_eval_doc_validity(jsonb, jsonb, jsonb, date) TO panels_core_app;