h4-projekt-gruppe-0-sm/mobile/lib/repos/product.dart

import 'package:flutter/material.dart';
import 'package:mobile/results.dart';

class ProductRepo extends ChangeNotifier {
  int _nextId = 0;
  List<Product> products = [];
  late List<Product> filteredProducts;
  ProductRepo() {
    _addAllProducts();
    filteredProducts = products;
  }

  int getNextId() {
    return _nextId++;
  }

  List<Product> allProducts() {
    return products;
  }

  void searchProducts(String query) {
    if (query.trim().isEmpty) {
      filteredProducts = products;
    } else {
      filteredProducts = products.where((product) {
        final nameLower = product.name.toLowerCase();
        final descriptionLower = product.description.toLowerCase();
        final searchLower = query.toLowerCase();

        return nameLower.contains(searchLower) ||
            descriptionLower.contains(searchLower);
      }).toList();
    }
    notifyListeners();
  }

  Result<Product, String> productWithBarcode(String barcode) {
    for (var i = 0; i < products.length; i++) {
      if (products[i].barcode == barcode) {
        return Ok(products[i]);
      }
    }
    return Err("Product with barcode $barcode doesn't exist");
  }

  void _addAllProducts() {
    products = [
      Product(
          id: _nextId++,
          name: "Minimælk",
          price: 12,
          description: "Konventionel minimælk med fedtprocent på 0,4%"),
      Product(
          id: _nextId++,
          name: "Letmælk",
          price: 13,
          description: "Konventionel letmælk med fedtprocent på 1,5%",
          location: Coordinate(x: 1800, y: 100)),
      Product(
          id: _nextId++,
          name: "Frilands Øko Supermælk",
          price: 20,
          description:
              "Økologisk mælk af frilandskøer med fedtprocent på 3,5%. Ikke homogeniseret eller pasteuriseret. Skaber store muskler og styrker knoglerne 💪"),
      Product(
          id: _nextId++,
          name: "Øko Gulerødder 1 kg",
          price: 10,
          description: ""),
      Product(id: _nextId++, name: "Øko Agurk", price: 10, description: ""),
      Product(id: _nextId++, name: "Æbler 1 kg", price: 10, description: ""),
      Product(id: _nextId++, name: "Basmati Ris", price: 20, description: ""),
      Product(id: _nextId++, name: "Haribo Mix", price: 30, description: ""),
      Product(id: _nextId++, name: "Smør", price: 30, description: ""),
      Product(id: _nextId++, name: "Harboe Cola", price: 5, description: ""),
      Product(
          id: _nextId++,
          name: "Monster Energi Drik",
          price: 20,
          description: ""),
      Product(id: _nextId++, name: "Spaghetti", price: 10, description: ""),
      Product(id: _nextId++, name: "Æbler 1 kg", price: 20, description: ""),
      Product(id: _nextId++, name: "Rød Cecil", price: 60, description: ""),
      Product(
          id: _nextId++,
          name: "Jägermeister 750 ml",
          price: 60,
          description: ""),
      Product(
          id: _nextId++,
          barcode: "5711953068881",
          name: "Protein Chokoladedrik",
          price: 15,
          description: "Arla's protein chokolade drik der giver store muskler"),
    ];
  }
}

class Coordinate {
  final double x;
  final double y;

  Coordinate({required this.x, required this.y});
}

class Product {
  final int id;
  final String name;
  final String description;
  final int price;
  final Coordinate? location;
  final String? barcode;

  Product(
      {required this.id,
      required this.name,
      required this.price,
      required this.description,
      this.location,
      this.barcode});
}