private static void UsersAndProducts(ProductsContext context)
{
var users = context.Users
.Where(u => u.SoldProducts.Count >= 1)
.Select(u => new
{
firstName = u.FirstName,
lastName = u.LastName,
age = u.Age,
soldProducts = u.SoldProducts.Select(p => new
{
name = p.Name,
price = p.Price
})
})
.OrderByDescending(u => u.soldProducts.Count())
.ThenBy(u => u.lastName);
var usersAndCounter = new
{
usersCount = users.Count(),
users = users
};
var usersJson = JsonConvert.SerializeObject(usersAndCounter, Formatting.Indented);
File.WriteAllText(@"../../Results/usersAndCount.json", usersJson);
}
private static void ImportUsers(ProductsContext context)
{
string usersJson = File.ReadAllText("../../Import/users.json");
List <User> users =
JsonConvert.DeserializeObject <List <User> >(usersJson);
context.Users.AddRange(users);
context.SaveChanges();
}
private static void ProductsInRange(ProductsContext context)
{
var products = context.Products
.Where(p => p.Price >= 500 && p.Price <= 1000)
.Select(p => new
{
name = p.Name,
price = p.Price,
seller = string.Concat(p.Seller.FirstName, " ", p.Seller.LastName)
}).OrderBy(p => p.price);
var jsonProducts = JsonConvert.SerializeObject(products, Formatting.Indented);
Console.WriteLine(jsonProducts);
}
private static void CategoriesByProductsCount(ProductsContext context)
{
var categories = context.Categories
.Select(c => new
{
category = c.Name,
productsCount = c.Products.Count,
averagePrice = c.Products.Select(x => x.Price).DefaultIfEmpty(0).Average(),
totalRevenue = c.Products.Where(p => p.BuyerId != null).Select(x => x.Price).DefaultIfEmpty(0).Sum()
})
.OrderBy(c => c.category);
var categoriesJson = JsonConvert.SerializeObject(categories, Formatting.Indented);
Console.WriteLine(categoriesJson);
}
static void Main(string[] args)
{
var context = new ProductsContext();
//context.Database.Initialize(true);
//ImportUsers(context);
//ImportProducts(context);
//ImportCatgories(context);
//ProductsInRange(context);
//SuccessfullySoldProducts(context);
//CategoriesByProductsCount(context);
UsersAndProducts(context);
}
private static void ImportCatgories(ProductsContext context)
{
string categoriesJson = File.ReadAllText("../../Import/categories.json");
var categories = JsonConvert.DeserializeObject <List <Category> >(categoriesJson);
int number = 0;
int productCount = context.Products.Count();
foreach (var c in categories)
{
int categoryProductsCount = number % 3 + 1;
for (int i = 0; i < number % categoryProductsCount; i++)
{
c.Products.Add(context.Products.Find((number % productCount) + 1));
}
number++;
}
context.Categories.AddRange(categories);
context.SaveChanges();
}
private static void SuccessfullySoldProducts(ProductsContext context)
{
var users = context.Users
.Where(u => u.SoldProducts.Count >= 1)
.Select(u => new
{
firstName = u.FirstName,
lastName = u.LastName,
soldProducts = u.SoldProducts.Select(p => new
{
name = p.Name,
price = p.Price,
buyerFirstName = p.Buyer.FirstName,
buyerLastName = p.Buyer.LastName
})
})
.OrderBy(u => u.lastName)
.ThenBy(u => u.firstName);
var usersJSON = JsonConvert.SerializeObject(users, Formatting.Indented);
Console.WriteLine(usersJSON);
}
private static void ImportProducts(ProductsContext context)
{
string productsJson = File.ReadAllText("../../Import/products.json");
List <Product> products =
JsonConvert.DeserializeObject <List <Product> >(productsJson);
int number = 0;
int totalUsers = context.Users.Count();
foreach (var p in products)
{
p.SellerId = number % totalUsers + 1;
if (number % 3 != 0)
{
p.BuyerId = (number * 2 % totalUsers) + 1;
}
number++;
}
context.Products.AddRange(products);
context.SaveChanges();
}
