private static void ProductsInRange(ProjectsContext context)
{
var products = context.Products
.Where(p => p.Price > 500 && p.Price < 1000)
.OrderBy(p => p.Price)
.Select(p => new
{
p.Name,
p.Price,
Seller = p.Seller.FirstName + " " + p.Seller.LastName
});
var jsonProducts = JsonConvert.SerializeObject(products, (Newtonsoft.Json.Formatting)Formatting.Indented);
Console.WriteLine(jsonProducts);
}
private static void CategoriesByProductsCount(ProjectsContext context)
{
var categories = context.Categories
.OrderBy(c => c.Name)
.Select(c => new
{
Category = c.Name,
ProductsCount = c.Products.Count,
AveragePrice = c.Products.Average(p => p.Price),
TotalAvenue = c.Products.Sum(p => p.Price)
});
string jsonCategories = JsonConvert.SerializeObject(categories, Formatting.Indented);
Console.WriteLine(jsonCategories);
}
private static void addCategoryForProducts(ProjectsContext context)
{
var randomizer = 2;
foreach (var category in context.Categories)
{
foreach (var product in context.Products)
{
if ((randomizer + 1) % 4 == 0)
{
product.Categories.Add(category);
randomizer++;
}
randomizer++;
}
}
context.SaveChanges();
}
private static void SuccessfullySoldProducts(ProjectsContext context)
{
var users = context.Users
.Where(u => u.ProductsSold.Count != 0)
.Select(u => new
{
u.FirstName,
u.LastName,
SoldProducts = u.ProductsSold.Where(ps => ps.Buyer.LastName != null).Select(p => new
{
p.Name,
p.Price,
BuyerFirstName = p.Buyer.FirstName,
BuyerLastName = p.Buyer.LastName
})
})
.OrderBy(u => u.LastName)
.ThenBy(u => u.FirstName);
string jsonUsers = JsonConvert.SerializeObject(users, Newtonsoft.Json.Formatting.Indented);
Console.WriteLine(jsonUsers);
}
private static void importProducts(ProjectsContext context)
{
string jsonProducts = File.ReadAllText(@"..\..\Import\products.json");
List <Product> products = JsonConvert.DeserializeObject <List <Product> >(jsonProducts);
int randomCount = 1;
Random rnd = new Random();
foreach (var product in products)
{
product.SellerId = rnd.Next(1, 56);
randomCount++;
if (randomCount % 13 == 0)
{
product.BuyerId = rnd.Next(1, 56);
}
}
context.Products.AddRange(products);
context.SaveChanges();
}
