CREATE OR REPLACE PROCEDURE public."Prc_P_PurchaseOrderSend"(p_id uuid, p_user_id uuid DEFAULT NULL)
LANGUAGE plpgsql AS $$
DECLARE v_tenant uuid; v_no varchar(32); v_email varchar(256); v_supplier varchar(256);
        v_subject varchar(256); v_lines text; v_total numeric; v_cur varchar(8);
BEGIN
  SELECT o."TenantId", o."OrderNo", c."Email", c."Name", o."TotalAmount", o."CurrencyId"
    INTO v_tenant, v_no, v_email, v_supplier, v_total, v_cur
    FROM "Prc_T_PurchaseOrder" o LEFT JOIN "Adm_T_Contact" c ON c."Id" = o."SupplierId"
   WHERE o."Id" = p_id;

  IF NOT EXISTS (SELECT 1 FROM "Prc_T_PurchaseOrderLine" WHERE "PurchaseOrderId" = p_id AND "IsDeleted" = false) THEN
    RAISE EXCEPTION 'Kalemi olmayan sipariş gönderilemez.' USING ERRCODE = 'P0001', DETAIL = '50185';
  END IF;
  IF COALESCE(v_email, '') = '' THEN
    RAISE EXCEPTION 'Tedarikçinin kontak kartında e-posta adresi yok.' USING ERRCODE = 'P0001', DETAIL = '50186';
  END IF;

  v_subject := 'Satınalma Siparişi ' || v_no;

  SELECT string_agg('<tr><td>' || COALESCE(p."Name", '') || '</td><td>' || COALESCE(l."Description", '') || '</td><td>'
                    || TRIM(TO_CHAR(l."Quantity", 'FM999G999G990D00')) || ' ' || l."UomId" || '</td><td>'
                    || TRIM(TO_CHAR(l."UnitPrice", 'FM999G999G990D00')) || '</td><td>%'
                    || TRIM(TO_CHAR(l."TaxRate", 'FM990')) || '</td><td>'
                    || TRIM(TO_CHAR(l."Amount", 'FM999G999G990D00')) || '</td><td>'
                    || COALESCE(TO_CHAR(l."DeliveryDate", 'DD.MM.YYYY'), '') || '</td></tr>', '' ORDER BY l."CreationTime")
    INTO v_lines
    FROM "Prc_T_PurchaseOrderLine" l LEFT JOIN "Inv_T_Product" p ON p."Id" = l."ProductId"
   WHERE l."PurchaseOrderId" = p_id AND l."IsDeleted" = false;

  -- Alıcı tedarikçinin e-postasıdır; tipin aktif Custom Mail kuralı gönderimi açar (kural kapatılırsa e-posta kuyruğa girmez).
  INSERT INTO "Adm_T_Notification" ("Id", "TenantId", "NotificationRuleId", "NotificationTypeId", "NotificationChannel", "Identifier", "Subject", "Message",
         "IsSent", "IsRead", "CreationTime", "CreatorId", "IsDeleted")
  SELECT gen_random_uuid(), v_tenant, r."Id", t."Id", r."Channel", v_email, v_subject, LEFT(
          '<p>Sayın ' || COALESCE(v_supplier, '') || ',</p><p>' || v_subject || ' aşağıda bilgilerinize sunulmuştur.</p>'
          || '<table border="1" cellpadding="4" cellspacing="0"><tr><th>Ürün</th><th>Açıklama</th><th>Miktar</th><th>Birim Fiyat</th><th>KDV</th><th>Tutar</th><th>Termin</th></tr>'
          || COALESCE(v_lines, '') || '</table><p><b>Toplam: ' || TRIM(TO_CHAR(v_total, 'FM999G999G990D00')) || ' ' || v_cur || '</b></p>',
          2048), false, false, NOW() AT TIME ZONE 'UTC', p_user_id, false
    FROM "Adm_T_NotificationType" t
    INNER JOIN "Adm_T_NotificationRule" r ON r."NotificationTypeId" = t."Id" AND r."IsActive" = true AND r."IsCustomized" = false AND r."IsDeleted" = false
           AND r."RecipientType" = 'Custom' AND r."RecipientId" IS NULL AND r."Channel" = 'Mail'
   WHERE t."Name" = 'SatinalmaSiparisiGonderildi' AND t."IsDeleted" = false AND t."TenantId" IS NOT DISTINCT FROM v_tenant;

  UPDATE "Prc_T_PurchaseOrder" SET "LastSentDate" = NOW() AT TIME ZONE 'UTC' WHERE "Id" = p_id;
END;
$$;