Numex yayın: routes/products.js

2026-09-10 08:58:56 +00:00 · 2026-09-10 08:58:56 +00:00 · a55d399eff
commit a55d399eff
parent 6cb533c4e0
1 changed files with 175 additions and 0 deletions
--- a/routes/products.js
+++ b/routes/products.js
@ -0,0 +1,175 @@
+'use strict';
+
+/**
+ * routes/products.js
+ * Ürün CRUD rotaları — hem HTML sayfa görünümleri hem REST API.
+ */
+
+const express = require('express');
+const router = express.Router();
+const productModel = require('../models/productModel');
+const categoryModel = require('../models/categoryModel');
+const stockModel = require('../models/stockModel');
+const lowStockService = require('../services/lowStockService');
+
+/** Ürün listesini kategori adıyla zenginleştirir. */
+function enrich(products) {
+  const categories = categoryModel.readAll();
+  return products.map((p) => {
+    const cat = categories.find((c) => c.id === Number(p.categoryId));
+    return {
+      ...p,
+      categoryName: cat ? cat.name : 'Kategori Yok',
+      lowStock: Number(p.stock) <= (Number(p.minimumStock) || 10)
+    };
+  });
+}
+
+// --- Sayfa görünümleri ---
+
+/** GET /new — yeni ürün formu sayfası */
+router.get('/new', (req, res) => {
+  const categories = categoryModel.readAll();
+  res.render('products/form', {
+    title: 'Yeni Ürün',
+    product: null,
+    categories,
+    action: '/api/products',
+    bodyClass: 'form-page'
+  });
+});
+
+/** GET /:id/edit — ürün düzenleme formu */
+router.get('/:id/edit', (req, res) => {
+  const product = productModel.findById(req.params.id);
+  if (!product) return res.status(404).send('Ürün bulunamadı');
+  const categories = categoryModel.readAll();
+  res.render('products/form', {
+    title: 'Ürünü Düzenle',
+    product,
+    categories,
+    action: `/api/products/${product.id}`,
+    bodyClass: 'form-page'
+  });
+});
+
+/** GET /:id — ürün detay sayfası */
+router.get('/:id', (req, res) => {
+  const product = productModel.findById(req.params.id);
+  if (!product) return res.status(404).send('Ürün bulunamadı');
+  const categories = categoryModel.readAll();
+  const cat = categories.find((c) => c.id === Number(product.categoryId));
+  const movements = stockModel.getByProduct(product.id).slice().reverse();
+  const lowStock = Number(product.stock) <= (Number(product.minimumStock) || 10);
+  res.render('products/detail', {
+    title: product.name,
+    product: { ...product, categoryName: cat ? cat.name : '—' },
+    movements,
+    lowStock,
+    bodyClass: 'detail-page'
+  });
+});
+
+/** GET / — ürün listesi (filtre destekli) */
+router.get('/', (req, res) => {
+  const search = (req.query.search || '').toString().trim().toLowerCase();
+  const category = req.query.category;
+
+  let products = productModel.readAll();
+  if (search) {
+    products = products.filter(
+      (p) =>
+        p.name.toLowerCase().includes(search) ||
+        String(p.id).includes(search)
+    );
+  }
+  if (category) {
+    products = products.filter((p) => String(p.categoryId) === String(category));
+  }
+  const categories = categoryModel.readAll();
+  const enriched = enrich(products);
+  const lowStockCount = lowStockService.countLowStock();
+
+  res.render('products/list', {
+    title: 'Ürünler',
+    products: enriched,
+    categories,
+    search,
+    selectedCategory: category || '',
+    lowStockCount,
+    bodyClass: 'list-page'
+  });
+});
+
+// --- REST API ---
+
+/** POST / — yeni ürün oluşturur */
+router.post('/', (req, res) => {
+  const { name, categoryId, unitPrice, stock, minimumStock } = req.body || {};
+  if (!name || !String(name).trim()) {
+    return res.status(400).json({ error: 'Ürün adı zorunludur.' });
+  }
+  if (Number(unitPrice) < 0 || (Number(unitPrice) !== 0 && isNaN(Number(unitPrice)))) {
+    return res.status(400).json({ error: 'Birim fiyat geçerli bir sayı olmalıdır.' });
+  }
+  if (Number(stock) < 0) {
+    return res.status(400).json({ error: 'Stok miktarı negatif olamaz.' });
+  }
+  // Kategori varlığını kontrol et (0 değilse)
+  if (categoryId && Number(categoryId) !== 0 && !categoryModel.findById(categoryId)) {
+    return res.status(400).json({ error: 'Geçersiz kategori.' });
+  }
+
+  const product = productModel.create({
+    name,
+    categoryId,
+    unitPrice,
+    stock,
+    minimumStock
+  });
+
+  if (req.get('Accept') === 'application/json' || req.xhr || req.body._api) {
+    return res.status(201).json(product);
+  }
+  res.redirect('/api/products');
+});
+
+/** PUT /:id — ürün günceller */
+router.put('/:id', (req, res) => {
+  const product = productModel.findById(req.params.id);
+  if (!product) return res.status(404).json({ error: 'Ürün bulunamadı' });
+
+  const { name, categoryId, unitPrice, stock, minimumStock } = req.body || {};
+  const updates = {};
+  if (name !== undefined && !String(name).trim()) {
+    return res.status(400).json({ error: 'Ürün adı boş olamaz.' });
+  }
+  if (name !== undefined) updates.name = name;
+  if (categoryId !== undefined) updates.categoryId = categoryId;
+  if (unitPrice !== undefined && Number(unitPrice) < 0) {
+    return res.status(400).json({ error: 'Birim fiyat negatif olamaz.' });
+  }
+  if (unitPrice !== undefined) updates.unitPrice = unitPrice;
+  if (stock !== undefined && Number(stock) < 0) {
+    return res.status(400).json({ error: 'Stok miktarı negatif olamaz.' });
+  }
+  if (stock !== undefined) updates.stock = stock;
+  if (minimumStock !== undefined) updates.minimumStock = minimumStock;
+
+  const updated = productModel.update(product.id, updates);
+  return res.json(updated);
+});
+
+/** DELETE /:id — ürün siler */
+router.delete('/:id', (req, res) => {
+  const ok = productModel.remove(req.params.id);
+  if (!ok) return res.status(404).json({ error: 'Ürün bulunamadı' });
+  return res.status(204).end();
+});
+
+// API varyantları (HTML yerine JSON döndürme için bazı ekstra uçlar)
+router.get('/api/all', (req, res) => {
+  res.json(enrich(productModel.readAll()));
+});
+
+module.exports = router;