create endpoints to add, update, and deactivate a product

coffeecard/CoffeeCard.Library/Services/v2/IProductService.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+using CoffeeCard.Models.DataTransferObjects.v2.Product;
 using CoffeeCard.Models.Entities;
 
 namespace CoffeeCard.Library.Services.v2
@@ -10,5 +11,8 @@ public interface IProductService : IDisposable
         Task<IEnumerable<Product>> GetPublicProductsAsync();
         Task<IEnumerable<Product>> GetProductsForUserAsync(User user);
         Task<Product> GetProductAsync(int productId);
+        Task<ChangedProductResponse> AddProduct(AddProductRequest product);
+
+        Task<ChangedProductResponse> UpdateProduct(UpdateProductRequest product);
     }
 }

coffeecard/CoffeeCard.Library/Services/v2/ProductService.cs

@@ -1,8 +1,10 @@
 using System.Collections.Generic;
+using System.Data;
 using System.Linq;
 using System.Threading.Tasks;
 using CoffeeCard.Common.Errors;
 using CoffeeCard.Library.Persistence;
+using CoffeeCard.Models.DataTransferObjects.v2.Product;
 using CoffeeCard.Models.Entities;
 using Microsoft.AspNetCore.Http;
 using Microsoft.EntityFrameworkCore;
@@ -53,6 +55,82 @@ public async Task<Product> GetProductAsync(int productId)
             return product;
         }
 
+        private async Task<bool> CheckProductUniquenessAsync(string name, int price)
+        {
+            var product = await _context.Products
+                .FirstOrDefaultAsync(p => (p.Name == name && p.Price == price));
+
+            return product == null;
+        }
+
+        public async Task<ChangedProductResponse> AddProduct(AddProductRequest newProduct)
+        {
+            var unique = await CheckProductUniquenessAsync(newProduct.Name, newProduct.Price);
+            if (!unique)
+            {
+                throw new ConflictException($"Product already exists with name {newProduct.Name} and price of {newProduct.Price}");
+            }
+
+            var product = new Product()
+            {
+                Price = newProduct.Price,
+                Description = newProduct.Description,
+                Name = newProduct.Name,
+                NumberOfTickets = newProduct.NumberOfTickets,
+                ExperienceWorth = 0,
+                Visible = newProduct.Visible
+            };
+
+            _context.Products.Add(product);
+            await _context.SaveChangesAsync();
+
+            var productUserGroups = newProduct.AllowedUserGroups.Select(userGroup => new ProductUserGroup
+            {
+                ProductId = product.Id,
+                UserGroup = userGroup
+            }).ToList();
+
+            _context.ProductUserGroups.AddRange(productUserGroups);
+
+
+            await _context.SaveChangesAsync();
+
+
+            var result = new ChangedProductResponse
+            {
+                Price = product.Price,
+                Description = product.Description,
+                Name = product.Name,
+                NumberOfTickets = product.NumberOfTickets,
+                Visible = product.Visible
+            };
+
+            return result;
+        }
+
+        public async Task<ChangedProductResponse> UpdateProduct(UpdateProductRequest changedProduct)
+        {
+            var product = await GetProductAsync(changedProduct.Id);
+            product.Price = changedProduct.Price;
+            product.Description = changedProduct.Description;
+            product.NumberOfTickets = changedProduct.NumberOfTickets;
+            product.Name = changedProduct.Name;
+            product.Visible = changedProduct.Visible;
+
+            await _context.SaveChangesAsync();
+
+            var result = new ChangedProductResponse
+            {
+                Price = product.Price,
+                Description = product.Description,
+                Name = product.Name,
+                NumberOfTickets = product.NumberOfTickets,
+                Visible = product.Visible
+            };
+
+            return result;
+        }
+
         public void Dispose()
         {
             _context?.Dispose();

coffeecard/CoffeeCard.Models/DataTransferObjects/v2/Product/AddProductRequest.cs

@@ -0,0 +1,70 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using CoffeeCard.Models.Entities;
+
+namespace CoffeeCard.Models.DataTransferObjects.v2.Product
+{
+    /// <summary>
+    /// Initiate a new product add request.
+    /// </summary>
+    /// <example>
+    /// {
+    ///     "Name": "Latte",
+    ///     "Price": 25,
+    ///     "NumberOfTickets": 10,
+    ///     "Description": "xxx",
+    ///     "Visible": true
+    /// }
+    /// </example>
+    public class AddProductRequest
+    {
+        /// <summary>
+        /// Gets or sets the price of the product.
+        /// </summary>
+        /// <value>Product Price</value>
+        /// <example> 10 </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Price must be a non-negative integer.")]
+        public int Price { get; set; }
+
+        /// <summary>
+        /// Gets or sets the number of tickets associated with the product.
+        /// </summary>
+        /// <value> Number of tickets associated with a product </value>
+        /// <example> 5 </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Number of Tickets must be a non-negative integer.")]
+        public int NumberOfTickets { get; set; }
+
+        /// <summary>
+        /// Gets or sets the name of the product.
+        /// </summary>
+        /// <value> Product Name </value>
+        /// <example> Latte </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Name cannot be an empty string.")]
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Gets or sets the description of the product.
+        /// </summary>
+        /// <value> Product Description </value>
+        /// <example> A homemade latte with soy milk </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Description cannot be an empty string.")]
+        public string Description { get; set; }
+
+        /// <summary>
+        /// Gets or sets the visibility of the product. Default is true.
+        /// </summary>
+        /// <value> Product Visibility </value>
+        /// <example> true </example>
+        [DefaultValue(true)]
+        public bool Visible { get; set; } = true;
+
+        [Required]
+        public IEnumerable<UserGroup> AllowedUserGroups { get; set; }
+
+    }
+}

coffeecard/CoffeeCard.Models/DataTransferObjects/v2/Product/ChangedProductResponse.cs

@@ -0,0 +1,63 @@
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+
+namespace CoffeeCard.Models.DataTransferObjects.v2.Product
+{
+    /// <summary>
+    /// Represents the product response.
+    /// </summary>
+    public class ChangedProductResponse
+    {
+        /// <summary>
+        /// Gets or sets the price of the product.
+        /// </summary>
+        /// <example>
+        /// {
+        ///   "Price": 150,
+        ///   "NumberOfTickets": 10,
+        ///   "Name": "Espresso",
+        ///   "Description": "A coffee made by forcing steam through ground coffee beans.",
+        ///   "Visible": false
+        /// }
+        /// </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Price must be a non-negative integer.")]
+        public int Price { get; set; }
+
+        /// <summary>
+        /// Gets or sets the number of tickets associated with the product.
+        /// </summary>
+        /// <value> Number of Tickets of a Product </value>
+        /// <example> 5 </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Number of tickets must be a non-negative integer.")]
+        public int NumberOfTickets { get; set; }
+
+        /// <summary>
+        /// Gets or sets the name of the product.
+        /// </summary>
+        /// <value> Product Name </value>
+        /// <example> Espresso </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Name cannot be an empty string.")]
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Gets or sets the description of the product.
+        /// </summary>
+        /// <value> Product Description </value>
+        /// <example> A homemade espresso from fresh beans </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Description cannot be an empty string.")]
+        public string Description { get; set; }
+
+        /// <summary>
+        /// Gets or sets the visibility of the product.
+        /// </summary>
+        /// <value> Product Visibility </value>
+        /// <example> true </example>
+        [Required]
+        public bool Visible { get; set; }
+    }
+}

coffeecard/CoffeeCard.Models/DataTransferObjects/v2/Product/UpdateProductRequest.cs

@@ -0,0 +1,73 @@
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+
+namespace CoffeeCard.Models.DataTransferObjects.v2.Product
+{
+    /// /// <summary>
+    /// Initiate an update product request.
+    /// </summary>
+    /// <example>
+    /// {
+    ///   "Id": 1,
+    ///   "Price": 150,
+    ///   "NumberOfTickets": 10,
+    ///   "Name": "Espresso",
+    ///   "Description": "A coffee made by forcing steam through ground coffee beans.",
+    ///   "Visible": false
+    /// }
+    /// </example>
+    public class UpdateProductRequest
+    {
+        /// <summary>
+        /// Gets or sets the ID of the product to update.
+        /// </summary>
+        /// <value> Product Id </value>
+        /// <example> 1 </example>
+        [Required]
+        public int Id { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated price of the product.
+        /// </summary>
+        /// <value> Product Price </value>
+        /// <example> 10 </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Price must be a non-negative integer.")]
+        public int Price { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated number of tickets associated with the product.
+        /// </summary>
+        /// <value> Number of Tickets of a Product </value>
+        /// <example> 5 </example>
+        [Required]
+        [Range(0, int.MaxValue, ErrorMessage = "Number of Tickets must be a non-negative integer.")]
+        public int NumberOfTickets { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated name of the product.
+        /// </summary>
+        /// <value> Product Name </value>
+        /// <example> Espresso </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Name cannot be an empty string.")]
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated description of the product.
+        /// </summary>
+        /// <value> Product Description </value>
+        /// <example> A homemade espresso from fresh beans </example>
+        [Required]
+        [MinLength(1, ErrorMessage = "Description cannot be an empty string.")]
+        public string Description { get; set; }
+
+        /// <summary>
+        /// Gets or sets the updated visibility of the product. Default is true.
+        /// </summary>
+        /// <value> Product Visibility </value>
+        /// <example> true </example>
+        [DefaultValue(true)]
+        public bool Visible { get; set; } = true;
+    }
+}