Add supply purchase order workflow

backend/db.js

@@ -490,6 +490,33 @@ const initDB = async () => {
             );
         `);
 
+        await pool.query(`
+            CREATE TABLE IF NOT EXISTS supply_purchase_orders (
+                id SERIAL PRIMARY KEY,
+                number VARCHAR(40) UNIQUE,
+                supplier TEXT NOT NULL,
+                status VARCHAR(30) NOT NULL DEFAULT 'draft',
+                expected_date DATE,
+                notes TEXT,
+                created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP,
+                updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP
+            );
+        `);
+
+        await pool.query(`
+            CREATE TABLE IF NOT EXISTS supply_purchase_order_items (
+                id SERIAL PRIMARY KEY,
+                purchase_order_id INTEGER NOT NULL REFERENCES supply_purchase_orders(id) ON DELETE CASCADE,
+                material TEXT NOT NULL,
+                quantity NUMERIC(14, 4) NOT NULL CHECK (quantity > 0),
+                unit VARCHAR(30) NOT NULL DEFAULT 'kg',
+                unit_cost NUMERIC(14, 4),
+                created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP
+            );
+        `);
+
+        await pool.query(`CREATE INDEX IF NOT EXISTS idx_supply_purchase_orders_status ON supply_purchase_orders (status, created_at DESC);`);
+
         await pool.query(`
             ALTER TABLE production_orders
             ADD COLUMN IF NOT EXISTS notes TEXT,

backend/routes/supplyRoutes.js

@@ -5,13 +5,16 @@ const {
     approveReceipt,
     consumeLotForProduction,
     createFabricPlan,
+    createPurchaseOrder,
     createReceipt,
     deleteFabricPlan,
     deleteReceipt,
     getSupplySummary,
     listFabricPlans,
     listKnownSuppliers,
+    listPurchaseOrders,
     saveMaterialDetails,
+    updatePurchaseOrderStatus,
     listLots,
     listMovements,
     listPurchaseNeeds,
@@ -36,6 +39,30 @@ router.get('/supply/suppliers', verifyToken, async (req, res, next) => {
     }
 });
 
+router.get('/supply/purchase-orders', verifyToken, async (req, res, next) => {
+    try {
+        res.json(await listPurchaseOrders());
+    } catch (error) {
+        next(error);
+    }
+});
+
+router.post('/supply/purchase-orders', verifyToken, async (req, res, next) => {
+    try {
+        res.status(201).json(await createPurchaseOrder(req.body || {}));
+    } catch (error) {
+        next(error);
+    }
+});
+
+router.patch('/supply/purchase-orders/:id/status', verifyToken, async (req, res, next) => {
+    try {
+        res.json(await updatePurchaseOrderStatus(req.params.id, req.body?.status));
+    } catch (error) {
+        next(error);
+    }
+});
+
 router.get('/supply/receipts', verifyToken, async (req, res, next) => {
     try {
         res.json(await listReceipts());

backend/services/supplyService.js

@@ -101,6 +101,27 @@ const mapMaterialDetails = (row) => ({
     updatedAt: row.updated_at
 });
 
+const PURCHASE_ORDER_STATUSES = new Set(['draft', 'sent', 'approved', 'received', 'canceled']);
+
+const mapPurchaseOrder = (row) => ({
+    id: row.id,
+    number: row.number || '',
+    supplier: row.supplier || '',
+    status: row.status || 'draft',
+    expectedDate: row.expected_date ? String(row.expected_date).slice(0, 10) : null,
+    notes: row.notes || '',
+    total: Number(row.total || 0),
+    items: Array.isArray(row.items) ? row.items.map(item => ({
+        id: item.id,
+        material: item.material || '',
+        quantity: Number(item.quantity || 0),
+        unit: item.unit || 'kg',
+        unitCost: item.unit_cost === null || item.unit_cost === undefined ? null : Number(item.unit_cost)
+    })) : [],
+    createdAt: row.created_at,
+    updatedAt: row.updated_at
+});
+
 const createValidationError = (message) => {
     const error = new Error(message);
     error.statusCode = 400;
@@ -189,6 +210,63 @@ const listKnownSuppliers = async () => {
     return result.rows.map(row => row.supplier);
 };
 
+const listPurchaseOrders = async () => {
+    const result = await pool.query(`
+        SELECT
+            purchase_order.id, purchase_order.number, purchase_order.supplier, purchase_order.status,
+            purchase_order.expected_date, purchase_order.notes, purchase_order.created_at, purchase_order.updated_at,
+            COALESCE((SELECT SUM(item.quantity * COALESCE(item.unit_cost, 0)) FROM supply_purchase_order_items item WHERE item.purchase_order_id = purchase_order.id), 0) AS total,
+            COALESCE((SELECT JSON_AGG(JSON_BUILD_OBJECT('id', item.id, 'material', item.material, 'quantity', item.quantity, 'unit', item.unit, 'unit_cost', item.unit_cost) ORDER BY item.id) FROM supply_purchase_order_items item WHERE item.purchase_order_id = purchase_order.id), '[]'::json) AS items
+        FROM supply_purchase_orders purchase_order
+        ORDER BY purchase_order.created_at DESC, purchase_order.id DESC;
+    `);
+    return result.rows.map(mapPurchaseOrder);
+};
+
+const createPurchaseOrder = async (payload = {}) => {
+    const supplier = normalizeText(payload.supplier);
+    const expectedDate = /^\d{4}-\d{2}-\d{2}$/.test(normalizeText(payload.expectedDate)) ? normalizeText(payload.expectedDate) : null;
+    const notes = normalizeText(payload.notes);
+    const items = (Array.isArray(payload.items) ? payload.items : []).map(item => ({
+        material: normalizeText(item?.material),
+        quantity: normalizeNumber(item?.quantity),
+        unit: normalizeText(item?.unit) || 'kg',
+        unitCost: normalizeNonNegativeNumber(item?.unitCost)
+    })).filter(item => item.material && item.quantity);
+    if (!supplier) throw createValidationError('Fornecedor é obrigatório para a ordem de compra.');
+    if (!items.length) throw createValidationError('Inclua pelo menos um material na ordem de compra.');
+
+    const client = await pool.connect();
+    try {
+        await client.query('BEGIN');
+        const orderResult = await client.query(`INSERT INTO supply_purchase_orders (supplier, status, expected_date, notes, updated_at) VALUES ($1, 'draft', $2, NULLIF($3, ''), CURRENT_TIMESTAMP) RETURNING id;`, [supplier, expectedDate, notes]);
+        const id = orderResult.rows[0].id;
+        await client.query(`UPDATE supply_purchase_orders SET number = $1 WHERE id = $2;`, [`OC-${String(id).padStart(5, '0')}`, id]);
+        for (const item of items) {
+            await client.query(`INSERT INTO supply_purchase_order_items (purchase_order_id, material, quantity, unit, unit_cost) VALUES ($1, $2, $3, $4, $5);`, [id, item.material, item.quantity, item.unit, item.unitCost]);
+        }
+        await client.query('COMMIT');
+        return (await listPurchaseOrders()).find(order => order.id === id);
+    } catch (error) {
+        await client.query('ROLLBACK');
+        throw error;
+    } finally {
+        client.release();
+    }
+};
+
+const updatePurchaseOrderStatus = async (id, status) => {
+    const normalizedStatus = normalizeText(status).toLowerCase();
+    if (!PURCHASE_ORDER_STATUSES.has(normalizedStatus)) throw createValidationError('Status de ordem de compra inválido.');
+    const result = await pool.query(`UPDATE supply_purchase_orders SET status = $1, updated_at = CURRENT_TIMESTAMP WHERE id = $2 RETURNING id;`, [normalizedStatus, id]);
+    if (!result.rowCount) {
+        const error = new Error('Ordem de compra não encontrada.');
+        error.statusCode = 404;
+        throw error;
+    }
+    return (await listPurchaseOrders()).find(order => order.id === Number(id));
+};
+
 const saveMaterialDetails = async (materialKey, payload) => {
     const normalizedKey = normalizeKey(materialKey);
     if (!normalizedKey) throw createValidationError('Material inválido para edição.');
@@ -1161,6 +1239,7 @@ module.exports = {
     approveReceipt,
     consumeLotForProduction,
     createFabricPlan,
+    createPurchaseOrder,
     createReceipt,
     deleteFabricPlan,
     deleteReceipt,
@@ -1170,9 +1249,11 @@ module.exports = {
     listFabricPlans,
     listMaterialDetails,
     listKnownSuppliers,
+    listPurchaseOrders,
     listLots,
     listMovements,
     listPurchaseNeeds,
     listReceipts,
-    saveMaterialDetails
+    saveMaterialDetails,
+    updatePurchaseOrderStatus
 };

src/dataService.ts

@@ -1,4 +1,4 @@
-import type { AuthUser, CampaignPreview, CampaignProcessSummary, CampaignQueueSummary, CatalogCategory, CatalogCategoryPayload, CatalogProduct, CatalogProductPayload, CatalogSummary, ClientAnalyticsItem, ClientDetailsAnalytics, ClientFilterOptions, ClientMetadataFilters, ClientPurchasePatternAnalytics, ConsumptionReference, ConsumptionReferencePayload, CreateProductionOrdersResult, CreateUserResult, CutPlanLotReservationPayload, CuttingSettings, DashboardAnalytics, DateRange, GraphsStockBalanceHistoryItem, GraphsStockBalancePayload, ManagedUser, OrderData, OlistRunDetails, OlistStatus, ProductAnalyticsItem, ProductComposition, ProductCompositionImportSummary, ProductCompositionPayload, ProductDetailsAnalytics, ProductionOrderExecutionPayload, ProductionOrderImportData, ProductionOrderItem, ProductionOrderPayload, ProductionOrderStatus, ProductionOrderSummary, RfmAnalytics, SellerAnalyticsItem, SellerDetailsAnalytics, StockData, SupplyFabricPlan, SupplyFabricPlanPayload, SupplyInventoryAdjustmentPayload, SupplyLot, SupplyMaterialDetailsPayload, SupplyProductionExitPayload, SupplyPurchaseNeed, SupplyReceipt, SupplyReceiptPayload, SupplySummary } from './types';
+import type { AuthUser, CampaignPreview, CampaignProcessSummary, CampaignQueueSummary, CatalogCategory, CatalogCategoryPayload, CatalogProduct, CatalogProductPayload, CatalogSummary, ClientAnalyticsItem, ClientDetailsAnalytics, ClientFilterOptions, ClientMetadataFilters, ClientPurchasePatternAnalytics, ConsumptionReference, ConsumptionReferencePayload, CreateProductionOrdersResult, CreateUserResult, CutPlanLotReservationPayload, CuttingSettings, DashboardAnalytics, DateRange, GraphsStockBalanceHistoryItem, GraphsStockBalancePayload, ManagedUser, OrderData, OlistRunDetails, OlistStatus, ProductAnalyticsItem, ProductComposition, ProductCompositionImportSummary, ProductCompositionPayload, ProductDetailsAnalytics, ProductionOrderExecutionPayload, ProductionOrderImportData, ProductionOrderItem, ProductionOrderPayload, ProductionOrderStatus, ProductionOrderSummary, RfmAnalytics, SellerAnalyticsItem, SellerDetailsAnalytics, StockData, SupplyFabricPlan, SupplyFabricPlanPayload, SupplyInventoryAdjustmentPayload, SupplyLot, SupplyMaterialDetailsPayload, SupplyProductionExitPayload, SupplyPurchaseNeed, SupplyPurchaseOrder, SupplyPurchaseOrderPayload, SupplyPurchaseOrderStatus, SupplyReceipt, SupplyReceiptPayload, SupplySummary } from './types';
 import { formatDateParam } from './dateRanges';
 
 const API_URL = import.meta.env.VITE_API_URL || '/api';
@@ -544,6 +544,34 @@ export const fetchSupplySuppliers = async (): Promise<string[]> => {
     return response.json() as Promise<string[]>;
 };
 
+export const fetchSupplyPurchaseOrders = async (): Promise<SupplyPurchaseOrder[]> => {
+    const response = await authFetch('/supply/purchase-orders');
+    if (!response.ok) throw new Error('Não foi possível carregar as ordens de compra.');
+    return response.json() as Promise<SupplyPurchaseOrder[]>;
+};
+
+export const createSupplyPurchaseOrder = async (payload: SupplyPurchaseOrderPayload): Promise<SupplyPurchaseOrder> => {
+    const response = await authFetch('/supply/purchase-orders', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(payload)
+    });
+    const data = await response.json().catch(() => null);
+    if (!response.ok) throw new Error(data?.error || 'Não foi possível criar a ordem de compra.');
+    return data as SupplyPurchaseOrder;
+};
+
+export const updateSupplyPurchaseOrderStatus = async (id: number, status: SupplyPurchaseOrderStatus): Promise<SupplyPurchaseOrder> => {
+    const response = await authFetch(`/supply/purchase-orders/${id}/status`, {
+        method: 'PATCH',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ status })
+    });
+    const data = await response.json().catch(() => null);
+    if (!response.ok) throw new Error(data?.error || 'Não foi possível atualizar a ordem de compra.');
+    return data as SupplyPurchaseOrder;
+};
+
 export const saveSupplyMaterialDetails = async (
     materialKey: string,
     payload: SupplyMaterialDetailsPayload

src/pages/Supplies.tsx

@@ -31,11 +31,11 @@ import PaginationControls from '../components/PaginationControls';
 import ProductTypeBadge from '../components/ProductTypeBadge';
 import StockGraphsBalanceModal from '../components/StockGraphsBalanceModal';
 import { classifyCutFamily } from '../analytics/cutting';
-import { adjustSupplyLotInventory, approveSupplyReceipt, consumeSupplyLotForProduction, createSupplyFabricPlan, createSupplyReceipt, deleteSupplyFabricPlan, deleteSupplyReceipt, downloadDatabaseDiagnostic, fetchCuttingSettings, fetchProductAnalytics, fetchProductionOrders, fetchStock, fetchSupplySummary, fetchSupplySuppliers, isSuperAdmin, saveSupplyMaterialDetails } from '../dataService';
+import { adjustSupplyLotInventory, approveSupplyReceipt, consumeSupplyLotForProduction, createSupplyFabricPlan, createSupplyPurchaseOrder, createSupplyReceipt, deleteSupplyFabricPlan, deleteSupplyReceipt, downloadDatabaseDiagnostic, fetchCuttingSettings, fetchProductAnalytics, fetchProductionOrders, fetchStock, fetchSupplyPurchaseOrders, fetchSupplySummary, fetchSupplySuppliers, isSuperAdmin, saveSupplyMaterialDetails, updateSupplyPurchaseOrderStatus } from '../dataService';
 import { parseProductName } from '../productParsing';
 import { resolveProductType, type ProductTypeKey } from '../productClassification';
 import { getPlanningStock } from '../planningStock';
-import type { CuttingSettings, DateRange, ProductAnalyticsItem, StockData, SupplyFabricPlan, SupplyLot, SupplyMovement, SupplyPurchaseNeed, SupplyReceipt, SupplySummary } from '../types';
+import type { CuttingSettings, DateRange, ProductAnalyticsItem, StockData, SupplyFabricPlan, SupplyLot, SupplyMovement, SupplyPurchaseNeed, SupplyPurchaseOrder, SupplyPurchaseOrderStatus, SupplyReceipt, SupplySummary } from '../types';
 
 type InventoryTab = 'dashboard' | 'stock' | 'balance' | 'receipts' | 'inventory' | 'movements';
 type ReceiptView = 'new' | 'pending' | 'history';
@@ -411,6 +411,7 @@ const SuppliesHub = () => {
       </div>
       <div className="grid grid-cols-1 gap-4 lg:grid-cols-2 xl:grid-cols-4">
         <ModuleCard title="Estoque e recebimentos" description="Saldo, lotes, recebimentos, inventário e movimentações de materiais." icon={Package} to="/supplies/inventory" meta={`${formatNumber(summary.stats.pendingReceipts, 0)} recebimentos pendentes · ${formatNumber(summary.stats.activeLots, 0)} lotes ativos`} />
+        <ModuleCard title="Ordens de compra" description="Formalize pedidos de materiais, fornecedor, prazo e valor antes do recebimento." icon={ClipboardList} to="/supplies/purchase-orders" meta="Criar e acompanhar OCs" />
         <ModuleCard title="Planejamento de malha" description="Organize a fila de matéria-prima para abastecer compras e corte." icon={Ruler} to="/supplies/fabric-planning" />
         <ModuleCard title="Prioridades de estoque" description="Analise reposição, cobertura e itens que precisam de revisão de cadastro." icon={PackageSearch} to="/supplies/current-planning" />
         <ModuleCard title="Dados para revisar" description="Consulte exceções de estoque, composição e cadastro fora do cálculo atual." icon={ClipboardList} to="/planning-issues" meta="Abrir pendências" />
@@ -2656,6 +2657,30 @@ const PurchaseNeedsScreen = () => {
   );
 };
 
+const PurchaseOrdersScreen = () => {
+  const [orders, setOrders] = useState<SupplyPurchaseOrder[]>([]);
+  const [suppliers, setSuppliers] = useState<string[]>([]);
+  const [busy, setBusy] = useState(false);
+  const [message, setMessage] = useState('');
+  const [form, setForm] = useState({ supplier: '', material: '', quantity: '', unit: 'kg', unitCost: '', expectedDate: '', notes: '' });
+  const load = async () => {
+    const [nextOrders, nextSuppliers] = await Promise.all([fetchSupplyPurchaseOrders(), fetchSupplySuppliers()]);
+    setOrders(nextOrders); setSuppliers(nextSuppliers);
+  };
+  useEffect(() => { void load().catch(error => setMessage(error instanceof Error ? error.message : 'Não foi possível carregar as OCs.')); }, []);
+  const submit = async (event: FormEvent<HTMLFormElement>) => {
+    event.preventDefault(); setBusy(true); setMessage('');
+    try {
+      await createSupplyPurchaseOrder({ supplier: form.supplier, expectedDate: form.expectedDate || null, notes: form.notes, items: [{ material: form.material, quantity: parseDecimal(form.quantity), unit: form.unit, unitCost: form.unitCost ? parseDecimal(form.unitCost) : null }] });
+      setForm({ supplier: '', material: '', quantity: '', unit: 'kg', unitCost: '', expectedDate: '', notes: '' }); await load(); setMessage('Ordem de compra criada. Envie ao fornecedor e atualize o status conforme o andamento.');
+    } catch (error) { setMessage(error instanceof Error ? error.message : 'Não foi possível criar a OC.'); } finally { setBusy(false); }
+  };
+  const changeStatus = async (id: number, status: SupplyPurchaseOrderStatus) => { setBusy(true); try { await updateSupplyPurchaseOrderStatus(id, status); await load(); } catch (error) { setMessage(error instanceof Error ? error.message : 'Não foi possível atualizar a OC.'); } finally { setBusy(false); } };
+  return <div className={pageClassName}><Header title="Ordens de Compra" subtitle="Formalize compras a partir das necessidades de material e acompanhe o compromisso com o fornecedor." backTo="/supplies" />
+    {message && <div className="rounded-xl border border-dark-border bg-dark-card px-4 py-3 text-sm font-bold text-dark-muted">{message}</div>}
+    <div className="grid grid-cols-1 gap-5 xl:grid-cols-[390px_minmax(0,1fr)]"><form onSubmit={submit} className={`${panelClassName} p-5`}><h2 className="text-base font-bold text-dark-text">Nova ordem de compra</h2><p className="mt-1 text-sm font-semibold text-dark-muted">Uma OC começa com um material. Use uma OC por fornecedor para manter o recebimento rastreável.</p><div className="mt-5 space-y-3"><label className="block text-xs font-bold text-dark-muted">Fornecedor<input required list="purchase-order-suppliers" value={form.supplier} onChange={event => setForm(current => ({ ...current, supplier: event.target.value }))} className={`${inputClassName} mt-1`} placeholder="Selecione ou informe" /></label><datalist id="purchase-order-suppliers">{suppliers.map(supplier => <option key={supplier} value={supplier} />)}</datalist><label className="block text-xs font-bold text-dark-muted">Material<input required value={form.material} onChange={event => setForm(current => ({ ...current, material: event.target.value }))} className={`${inputClassName} mt-1`} placeholder="Ex.: Malha 30.1 preta" /></label><div className="grid grid-cols-2 gap-3"><label className="text-xs font-bold text-dark-muted">Quantidade<input required inputMode="decimal" value={form.quantity} onChange={event => setForm(current => ({ ...current, quantity: event.target.value }))} className={`${inputClassName} mt-1`} placeholder="0" /></label><label className="text-xs font-bold text-dark-muted">Unidade<select value={form.unit} onChange={event => setForm(current => ({ ...current, unit: event.target.value }))} className={`${inputClassName} mt-1`}><option value="kg">kg</option><option value="un.">un.</option><option value="rolos">rolos</option></select></label></div><div className="grid grid-cols-2 gap-3"><label className="text-xs font-bold text-dark-muted">Custo unitário<input inputMode="decimal" value={form.unitCost} onChange={event => setForm(current => ({ ...current, unitCost: event.target.value }))} className={`${inputClassName} mt-1`} placeholder="Opcional" /></label><label className="text-xs font-bold text-dark-muted">Previsão<input type="date" value={form.expectedDate} onChange={event => setForm(current => ({ ...current, expectedDate: event.target.value }))} className={`${inputClassName} mt-1`} /></label></div><label className="block text-xs font-bold text-dark-muted">Observações<textarea value={form.notes} onChange={event => setForm(current => ({ ...current, notes: event.target.value }))} className={`${inputClassName} mt-1 min-h-20`} placeholder="Condição, cor, lote ou referência do fornecedor" /></label><button disabled={busy} className="inline-flex h-11 w-full items-center justify-center gap-2 rounded-lg bg-brand-primary px-4 text-sm font-bold text-brand-contrast disabled:opacity-60 cursor-pointer"><ClipboardList className="h-4 w-4" />Criar OC</button></div></form><div className={panelClassName}><div className="border-b border-dark-border p-5"><h2 className="text-base font-bold text-dark-text">OCs em andamento</h2><p className="mt-1 text-sm font-semibold text-dark-muted">A aprovação financeira e o recebimento físico continuam sendo controlados em Estoque e recebimentos.</p></div>{orders.length ? <div className="divide-y divide-dark-border">{orders.map(order => <div key={order.id} className="p-5"><div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between"><div><p className="font-mono text-xs font-bold text-brand-primary">{order.number}</p><h3 className="mt-1 text-sm font-bold text-dark-text">{order.supplier}</h3><p className="mt-1 text-xs font-semibold text-dark-muted">{order.items.map(item => `${item.material} · ${formatNumber(item.quantity)} ${item.unit}`).join(' | ')}</p></div><select value={order.status} disabled={busy} onChange={event => void changeStatus(order.id, event.target.value as SupplyPurchaseOrderStatus)} className={`${inputClassName} h-9 w-auto text-xs`}><option value="draft">Rascunho</option><option value="sent">Enviada</option><option value="approved">Aprovada</option><option value="received">Recebida</option><option value="canceled">Cancelada</option></select></div><div className="mt-3 flex flex-wrap gap-x-5 gap-y-1 text-xs font-semibold text-dark-muted"><span>Previsão: {order.expectedDate || '-'}</span><span>Total estimado: R$ {formatNumber(order.total, 2)}</span>{order.notes && <span>{order.notes}</span>}</div></div>)}</div> : <div className={emptyStateClassName}><ClipboardList className="h-8 w-8 text-brand-primary" /><h3 className="text-base font-bold text-dark-text">Nenhuma OC criada</h3><p className="text-sm font-semibold text-dark-muted">Use a necessidade de compra para decidir o que pedir e registre a OC aqui.</p></div>}</div></div></div>;
+};
+
 const Supplies = () => {
   const { section } = useParams<{ section?: string }>();
 
@@ -2664,6 +2689,7 @@ const Supplies = () => {
   if (section === 'inventory') return <InventoryScreen />;
   if (section === 'fabric-planning') return <FabricPlanningScreen />;
   if (section === 'purchase-needs') return <PurchaseNeedsScreen />;
+  if (section === 'purchase-orders') return <PurchaseOrdersScreen />;
 
   return <Navigate to="/supplies" replace />;
 };

src/types.ts

@@ -454,6 +454,36 @@ export interface SupplyFabricPlan {
   updatedAt: string;
 }
 
+export type SupplyPurchaseOrderStatus = 'draft' | 'sent' | 'approved' | 'received' | 'canceled';
+
+export interface SupplyPurchaseOrderItem {
+  id: number;
+  material: string;
+  quantity: number;
+  unit: string;
+  unitCost: number | null;
+}
+
+export interface SupplyPurchaseOrder {
+  id: number;
+  number: string;
+  supplier: string;
+  status: SupplyPurchaseOrderStatus;
+  expectedDate: string | null;
+  notes: string;
+  total: number;
+  items: SupplyPurchaseOrderItem[];
+  createdAt: string;
+  updatedAt: string;
+}
+
+export type SupplyPurchaseOrderPayload = {
+  supplier: string;
+  expectedDate?: string | null;
+  notes?: string;
+  items: Array<{ material: string; quantity: number; unit?: string; unitCost?: number | null }>;
+};
+
 export interface SupplyPurchaseNeed {
   material: string;
   materialKey: string;