Connect supply planning to purchase needs

backend/services/supplyService.js

@@ -8,6 +8,11 @@ const normalizeNumber = (value) => {
     return Number.isFinite(number) && number > 0 ? number : null;
 };
 
+const normalizeKey = (value) => normalizeText(value)
+    .normalize('NFD')
+    .replace(/[\u0300-\u036f]/g, '')
+    .toLowerCase();
+
 const mapReceipt = (row) => ({
     id: row.id,
     category: row.category,
@@ -50,6 +55,18 @@ const mapMovement = (row) => ({
     createdAt: row.created_at
 });
 
+const mapFabricPlan = (row) => ({
+    id: row.id,
+    material: row.material,
+    color: row.color || '',
+    quantityKg: Number(row.quantity_kg),
+    supplier: row.supplier || '',
+    priority: row.priority,
+    status: row.status,
+    createdAt: row.created_at,
+    updatedAt: row.updated_at
+});
+
 const createValidationError = (message) => {
     const error = new Error(message);
     error.statusCode = 400;
@@ -84,7 +101,87 @@ const listMovements = async () => {
     return result.rows.map(mapMovement);
 };
 
-const buildStats = (receipts, lots) => {
+const listFabricPlans = async () => {
+    const result = await pool.query(`
+        SELECT id, material, color, quantity_kg, supplier, priority, status, created_at, updated_at
+        FROM supply_fabric_plans
+        WHERE status = 'active'
+        ORDER BY
+            CASE priority
+                WHEN 'Crítico' THEN 1
+                WHEN 'Atenção' THEN 2
+                ELSE 3
+            END,
+            created_at DESC,
+            id DESC
+    `);
+    return result.rows.map(mapFabricPlan);
+};
+
+const buildPurchaseNeeds = (plans, lots, receipts) => {
+    const needsByMaterial = new Map();
+
+    plans.forEach(plan => {
+        const key = normalizeKey(plan.material);
+        if (!key) return;
+
+        const current = needsByMaterial.get(key) || {
+            material: plan.material,
+            plannedKg: 0,
+            stockKg: 0,
+            pendingKg: 0,
+            purchaseKg: 0,
+            priority: 'Normal',
+            suppliers: new Set(),
+            colors: new Set()
+        };
+
+        current.plannedKg += plan.quantityKg;
+        if (plan.supplier) current.suppliers.add(plan.supplier);
+        if (plan.color) current.colors.add(plan.color);
+        if (plan.priority === 'Crítico') current.priority = 'Crítico';
+        if (plan.priority === 'Atenção' && current.priority !== 'Crítico') current.priority = 'Atenção';
+        needsByMaterial.set(key, current);
+    });
+
+    lots.forEach(lot => {
+        if (lot.unit !== 'kg') return;
+        const need = needsByMaterial.get(normalizeKey(lot.product));
+        if (need) need.stockKg += lot.quantity;
+    });
+
+    receipts.forEach(receipt => {
+        if (receipt.status !== 'pending' || receipt.unit !== 'kg') return;
+        const need = needsByMaterial.get(normalizeKey(receipt.product));
+        if (need) need.pendingKg += receipt.quantity;
+    });
+
+    return Array.from(needsByMaterial.values())
+        .map(need => {
+            const purchaseKg = Math.max(need.plannedKg - need.stockKg - need.pendingKg, 0);
+            let status = 'ok';
+            if (purchaseKg > 0 && (need.priority === 'Crítico' || need.stockKg === 0)) status = 'critical';
+            else if (purchaseKg > 0) status = 'attention';
+
+            return {
+                material: need.material,
+                plannedKg: need.plannedKg,
+                stockKg: need.stockKg,
+                pendingKg: need.pendingKg,
+                purchaseKg,
+                priority: need.priority,
+                status,
+                suppliers: Array.from(need.suppliers),
+                colors: Array.from(need.colors)
+            };
+        })
+        .sort((a, b) => {
+            const statusOrder = { critical: 1, attention: 2, ok: 3 };
+            return statusOrder[a.status] - statusOrder[b.status] || b.purchaseKg - a.purchaseKg || a.material.localeCompare(b.material);
+        });
+};
+
+const buildStats = (receipts, lots, purchaseNeeds) => {
     const totalQuantityKg = lots.reduce((total, lot) => (
         lot.unit === 'kg' ? total + lot.quantity : total
     ), 0);
@@ -93,27 +190,41 @@ const buildStats = (receipts, lots) => {
         totalQuantityKg,
         activeLots: lots.length,
         rolls: lots.filter(lot => lot.unit === 'rolos').reduce((total, lot) => total + lot.quantity, 0),
-        alerts: 0,
+        alerts: purchaseNeeds.filter(need => need.status !== 'ok').length,
         pendingReceipts: receipts.filter(receipt => receipt.status === 'pending').length,
         approvedReceipts: receipts.filter(receipt => receipt.status === 'approved').length
     };
 };
 
 const getSupplySummary = async () => {
-    const [receipts, lots, movements] = await Promise.all([
+    const [receipts, lots, movements, fabricPlans] = await Promise.all([
         listReceipts(),
         listLots(),
-        listMovements()
+        listMovements(),
+        listFabricPlans()
     ]);
+    const purchaseNeeds = buildPurchaseNeeds(fabricPlans, lots, receipts);
 
     return {
         receipts,
         lots,
         movements,
-        stats: buildStats(receipts, lots)
+        fabricPlans,
+        purchaseNeeds,
+        stats: buildStats(receipts, lots, purchaseNeeds)
     };
 };
 
+const listPurchaseNeeds = async () => {
+    const [plans, lots, receipts] = await Promise.all([
+        listFabricPlans(),
+        listLots(),
+        listReceipts()
+    ]);
+
+    return buildPurchaseNeeds(plans, lots, receipts);
+};
+
 const createReceipt = async (payload) => {
     const category = normalizeText(payload.category);
     const product = normalizeText(payload.product);
@@ -233,12 +344,49 @@ const deleteReceipt = async (id) => {
     }
 };
 
+const createFabricPlan = async (payload) => {
+    const material = normalizeText(payload.material);
+    const quantityKg = normalizeNumber(payload.quantityKg);
+
+    if (!material) throw createValidationError('Malha ou tecido é obrigatório.');
+    if (!quantityKg) throw createValidationError('Quantidade deve ser maior que zero.');
+
+    const result = await pool.query(`
+        INSERT INTO supply_fabric_plans (
+            material, color, quantity_kg, supplier, priority, status, updated_at
+        )
+        VALUES ($1, $2, $3, $4, $5, 'active', CURRENT_TIMESTAMP)
+        RETURNING id, material, color, quantity_kg, supplier, priority, status, created_at, updated_at
+    `, [
+        material,
+        normalizeText(payload.color) || 'Todas as cores',
+        quantityKg,
+        normalizeText(payload.supplier) || null,
+        normalizeText(payload.priority) || 'Normal'
+    ]);
+
+    return mapFabricPlan(result.rows[0]);
+};
+
+const deleteFabricPlan = async (id) => {
+    await pool.query(`
+        UPDATE supply_fabric_plans
+        SET status = 'removed',
+            updated_at = CURRENT_TIMESTAMP
+        WHERE id = $1
+    `, [id]);
+};
+
 module.exports = {
     approveReceipt,
+    createFabricPlan,
     createReceipt,
+    deleteFabricPlan,
     deleteReceipt,
     getSupplySummary,
+    listFabricPlans,
     listLots,
     listMovements,
+    listPurchaseNeeds,
     listReceipts
 };