427 lines
14 KiB
JavaScript
427 lines
14 KiB
JavaScript
const fs = require("fs");
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const csv = require("csv-parser");
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const path = require("path");
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const db = require("../models");
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const { Sequelize } = require("sequelize");
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const Product = db.Product;
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const UnitMaster = db.UnitMaster;
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exports.createProduct = async (req, res) => {
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try {
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const data = await Product.create(req.body);
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res.status(201).send({'status':"success",'message':"created successfully",'data': data });
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} catch (error) {
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res.status(500).send({'status':"failed",'message':error.message });
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}
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};
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exports.getAllProducts = async (req, res) => {
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try {
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const data = await Product.findAll({
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attributes: {
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include: [
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[
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Sequelize.literal(
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`(SELECT COUNT(*) FROM establishment_products AS EP WHERE EP.product_id = products.id)`
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),
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"mapped_establishment_count",
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],
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],
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},
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include: [
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{
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model: UnitMaster,
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as: "unit",
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attributes: ["uom"],
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},
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],
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order: [
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[Sequelize.literal("COALESCE(products.updated_at, products.created_at) DESC")],
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],
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});
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res.status(200).send({'status':"success",'message':"Fetched successfully",'product_count': data.length, 'data': data });
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} catch (error) {
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res.status(500).send({'status':"failed",'message':error.message });
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}
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};
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exports.getProductById = async (req, res) => {
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try {
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const data = await Product.findByPk(req.params.id);
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if (!data) res.status(404).send({'status':"failed",'message':"Record Not found",'data': "" });
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res.status(200).send({'status':"success",'message':"Fetched successfully",'data': data });
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} catch (error) {
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res.status(500).send({'status':"failed",'message':error.message });
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}
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};
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exports.updateProduct = async (req, res) => {
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try {
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const object = {
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...req.body,
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updated_at: Sequelize.literal("NOW()")
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};
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const [updated] = await Product.update(object, { where: { id: req.params.id } });
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if (!updated) res.status(404).send({'status':"failed",'message':"Record Not found",'data': "" });
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res.status(200).send({'status':"success",'message':"Updated successfully",'data': "" });
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} catch (error) {
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res.status(500).send({'status':"failed",'message':error.message });
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}
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};
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exports.deleteProduct = async (req, res) => {
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try {
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const deleted = await Product.destroy({ where: { id: req.params.id } });
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if (!deleted) res.status(404).send({'status':"failed",'message':"Record Not found",'data': "" });
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res.status(200).send({'status':"success",'message':"Deleted successfully",'data': "" });
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} catch (error) {
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res.status(500).send({'status':"failed",'message':error.message });
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}
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};
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// exports.uploadProductsFromCSV = async (req, res) => {
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// try {
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// // Check if file exists
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// if (!req.file) {
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// return res.status(400).send({ status: "failed", message: "No file uploaded" });
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// }
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// const filePath = req.file.path;
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// // Validate file type
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// if (!req.file.originalname.endsWith(".csv")) {
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// fs.unlinkSync(filePath);
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// return res.status(400).send({
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// status: "failed",
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// message: "Invalid file type. Only CSV files are allowed.",
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// });
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// }
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// // Validate userId
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// if (!req.body.userId || isNaN(req.body.userId)) {
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// fs.unlinkSync(filePath);
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// return res.status(400).send({
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// status: "failed",
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// message: "Invalid or missing userId. Must be an integer.",
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// });
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// }
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// const results = [];
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// const userId = parseInt(req.body.userId);
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// console.log(userId, "userId");
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// // Read CSV and clean headers/values
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// fs.createReadStream(filePath)
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// .pipe(csv())
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// .on("data", (row) => {
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// // Trim all keys and values to handle spaces in header names or values
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// const cleanRow = {};
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// for (const key in row) {
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// cleanRow[key.trim()] = row[key] ? row[key].trim() : null;
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// }
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// results.push(cleanRow);
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// })
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// .on("end", async () => {
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// try {
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// // Check for empty CSV
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// if (results.length === 0) {
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// fs.unlinkSync(filePath);
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// return res.status(400).send({
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// status: "failed",
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// message: "CSV file is empty or invalid.",
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// });
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// }
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// console.log(results, "results");
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// // Fetch existing products by hs_code
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// const hsCodes = results.map((r) => r.hs_code);
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// const existingProducts = await Product.findAll({
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// where: { hs_code: hsCodes },
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// });
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// const existingHsCodes = existingProducts.map((p) => p.hs_code);
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// const toInsert = [];
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// const duplicates = [];
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// // Process CSV rows
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// for (const row of results) {
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// const hsCode = row.hs_code?.trim();
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// const productName = row.product_name?.trim();
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// const description = row.hs_description?.trim();
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// if (!hsCode || !productName) continue; // skip invalid rows
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// if (existingHsCodes.includes(hsCode)) {
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// duplicates.push(hsCode);
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// } else {
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// toInsert.push({
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// hs_code: hsCode,
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// product_name: productName,
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// hs_description: description,
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// created_by: userId,
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// created_at: new Date(),
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// });
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// }
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// }
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// // Bulk insert new records
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// let inserted = [];
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// if (toInsert.length > 0) {
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// inserted = await Product.bulkCreate(toInsert, { validate: true });
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// }
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// // Delete file after processing
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// fs.unlinkSync(filePath);
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// // Send success response
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// return res.status(200).send({
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// status: "success",
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// message: `${inserted.length} products inserted successfully.`,
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// inserted_count: inserted.length,
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// duplicate_hs_codes: duplicates,
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// });
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// } catch (err) {
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// if (fs.existsSync(filePath)) fs.unlinkSync(filePath);
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// return res.status(500).send({
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// status: "failed",
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// message: err.message,
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// });
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// }
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// });
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// } catch (error) {
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// return res.status(500).send({ status: "failed", message: error.message });
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// }
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// };
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exports.downloadProductSample = async (req, res) => {
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try {
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const filePath = path.join(__dirname, "../writable/uploads/sample_files/products_upload_sample.csv");
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return res.download(filePath, "products_upload_sample.csv");
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} catch (error) {
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return res.status(500).send({ status: "failed", message: error.message });
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}
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};
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exports.uploadProductsFromCSV = async (req, res) => {
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try {
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if (!req.file) {
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return res.status(400).send({ status: "failed", message: "No file uploaded" });
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}
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const filePath = req.file.path;
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if (!req.file.originalname.endsWith(".csv")) {
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fs.unlinkSync(filePath);
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return res.status(400).send({ status: "failed", message: "Invalid file type. Only CSV allowed." });
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}
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if (!req.user.id || isNaN(req.user.id)) {
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fs.unlinkSync(filePath);
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return res.status(400).send({ status: "failed", message: "Invalid or missing User Id." });
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}
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const mode = req.body.mode?.toLowerCase() || "add";
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if (mode !== "add") {
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fs.unlinkSync(filePath);
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return res.status(400).send({ status: "failed", message: "Only 'Add Only' mode is supported currently." });
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}
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const results = [];
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const userId = parseInt(req.user.id);
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const stats = fs.statSync(filePath);
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if (stats.size === 0) {
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fs.unlinkSync(filePath);
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return res.status(400).send({
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status: "failed",
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message: "Uploaded file is empty.",
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});
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}
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fs.createReadStream(filePath)
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.pipe(csv())
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.on("data", (row) => {
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const cleanRow = {};
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// Normalize headers and smart-map them
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for (const key in row) {
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const normalizedKey = key.replace(/[\s\W]+/g, "_").trim().toLowerCase();
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let mappedKey = normalizedKey;
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if (/^hs.*code$/.test(normalizedKey) || normalizedKey === "hscode") {
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mappedKey = "hs_code";
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} else if (/^product.*name$/.test(normalizedKey) || /^produc.*tname$/.test(normalizedKey)) {
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mappedKey = "product_name";
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} else if (/^unit[s]?$/.test(normalizedKey) || /measurement|uom|measure/i.test(normalizedKey)) {
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mappedKey = "unit";
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}
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cleanRow[mappedKey] = row[key]?.trim() || null;
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}
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results.push(cleanRow);
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})
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.on("end", async () => {
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try {
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if (results.length === 0) {
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fs.unlinkSync(filePath);
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return res.status(400).send({ status: "failed", message: "CSV file is empty or invalid." });
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}
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const requiredCols = ["hs_code", "product_name", "unit"];
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const headers = Object.keys(results[0]);
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const missingCols = requiredCols.filter((col) => !headers.includes(col));
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const extraCols = headers.filter((col) => !requiredCols.includes(col));
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if (missingCols.length > 0 || extraCols.length > 0) {
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fs.unlinkSync(filePath);
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let message = "";
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if (missingCols.length > 0) message += `Missing required columns: ${missingCols.join(", ")}. `;
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if (extraCols.length > 0) message += `Unexpected columns found: ${extraCols.join(", ")}. Only 'HS Code', 'Product Name', and 'Unit' are allowed.`;
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return res.status(400).send({ status: "failed", message: message.trim() });
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}
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// Validate and normalize data
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const normalizedRows = [];
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const fileDuplicates = new Set();
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const seenHsCodes = new Set();
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const errors = [];
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for (let [index, row] of results.entries()) {
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let hsCode = row.hs_code?.replace(/[-\s/]/g, "").trim();
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const productName = row.product_name?.replace(/\s+/g, " ").trim();
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const unit = row.unit?.trim().toLowerCase();
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if (!hsCode || !productName) {
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errors.push({ row: index + 1, error: "Missing required HS Code or Product Name" });
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continue;
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}
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if (!/^\d+$/.test(hsCode)) {
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errors.push({ row: index + 1, error: "HS Code must be numeric" });
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continue;
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}
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if (hsCode.length > 12) {
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errors.push({ row: index + 1, error: "HS Code must be 10 digits" });
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continue;
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}
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const normalizedHs = hsCode.replace(/^0+/, "");
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if (seenHsCodes.has(normalizedHs)) {
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fileDuplicates.add(hsCode);
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continue;
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}
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seenHsCodes.add(normalizedHs);
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normalizedRows.push({ hsCode, productName, unit });
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}
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if (fileDuplicates.size > 0) {
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fs.unlinkSync(filePath);
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return res.status(400).send({
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status: "failed",
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message: "Duplicate HS Codes found within file. Resolve and re-upload.",
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duplicate_hs_codes_in_file: [...fileDuplicates],
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});
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}
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const unitMasters = await UnitMaster.findAll({ attributes: ["id", "uom"] });
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const unitMap = {};
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unitMasters.forEach((u) => (unitMap[u.uom.trim().toLowerCase()] = u.id));
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const existingProducts = await Product.findAll({ attributes: ["hs_code"] });
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const existingSet = new Set(existingProducts.map((p) => p.hs_code.replace(/^0+/, "")));
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const toInsert = [];
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const duplicates = [];
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for (const row of normalizedRows) {
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const normalizedHs = row.hsCode.replace(/^0+/, "");
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if (existingSet.has(normalizedHs)) {
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duplicates.push(row.hsCode);
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continue;
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}
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const unitId = unitMap[row.unit] || null;
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if (!unitId) {
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errors.push({ hs_code: row.hsCode, error: "Invalid unit" });
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continue;
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}
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toInsert.push({
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hs_code: row.hsCode,
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product_name: row.productName,
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unit_id: unitId,
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created_by: userId,
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created_at: new Date(),
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});
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}
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let inserted = [];
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if (toInsert.length > 0) {
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inserted = await Product.bulkCreate(toInsert, { validate: true });
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}
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fs.unlinkSync(filePath);
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let finalStatus = "success";
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let message = `${inserted.length} products inserted successfully.`;
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if (errors.length > 0 || duplicates.length > 0) {
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finalStatus = inserted.length > 0 ? "partial_success" : "failed";
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if (finalStatus === "partial_success") {
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message = `${inserted.length} products inserted, ${duplicates.length} duplicates skipped, ${errors.length} validation errors found.`;
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} else {
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message = `No products imported. ${duplicates.length} duplicates and ${errors.length} validation errors found.`;
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}
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}
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return res.status(200).send({
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status: finalStatus,
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message,
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summary: {
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total_records: results.length,
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imported: inserted.length,
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skipped: duplicates.length,
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errors: errors,
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},
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duplicate_hs_codes_in_system: duplicates,
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});
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} catch (err) {
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if (fs.existsSync(filePath)) fs.unlinkSync(filePath);
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return res.status(500).send({ status: "failed", message: err.message });
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}
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});
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} catch (error) {
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return res.status(500).send({ status: "failed", message: error.message });
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}
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};
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