public static void AlmostOrderedArticlesReport()
{
var shoppingCartCreated = DateTime.UtcNow;
var article1Ordered = shoppingCartCreated.AddMinutes(1);
var article2Ordered = shoppingCartCreated.AddMinutes(2);
var article3Ordered = shoppingCartCreated.AddMinutes(3);
var article2Removed = shoppingCartCreated.AddMinutes(4);
var article1Removed = shoppingCartCreated.AddMinutes(9);
var ordered = shoppingCartCreated.AddMinutes(10);
var state = new AlmostOrderedArticlesState();
state = state.Apply(new ShoppingCartCreated("ShoppingCart-Id", "Great-Customer-Id", "Great Customer", shoppingCartCreated));
state = state.Apply(new ShoppingCartArticlePlaced("ShoppingCart-Id", "ShoppingCartArticle-Id", "Article-Id", "A12345", "A great Article", Money.EUR(99.99m), 1, Money.EUR(99.99m), article1Ordered));
state = state.Apply(new ShoppingCartArticlePlaced("ShoppingCart-Id", "ShoppingCartArticle2-Id", "Article2-Id", "B12345", "Another great Article", Money.EUR(59.99m), 1, Money.EUR(99.99m), article2Ordered));
state = state.Apply(new ShoppingCartArticlePlaced("ShoppingCart-Id", "ShoppingCartArticle3-Id", "Article3-Id", "C12345", "Yet another great Article", Money.EUR(39.99m), 1, Money.EUR(99.99m), article3Ordered));
state = state.Apply(new ShoppingCartArticleRemoved("ShoppingCart-Id", "ShoppingCartArticle2-Id", "Article2-Id", "B12345", "Yet yet another great Article", Money.EUR(59.99m), 1, Money.EUR(99.99m), article2Removed));
state = state.Apply(new ShoppingCartArticleRemoved("ShoppingCart-Id", "ShoppingCartArticle-Id", "Article-Id", "A12345", "Yet yet yet another great Article", Money.EUR(99.99m), 1, Money.EUR(99.99m), article1Removed));
state = state.Apply(new ShoppingCartOrdered("ShoppingCart-Id", ordered));
Console.WriteLine("Almost ordered shopping cart articles: ");
foreach (var entry in state.AlmostOrderedShoppingCartArticles)
{
Console.WriteLine($"{entry.CustomerName}: {string.Join(", ", entry.Articlenumber)} - {entry.Timespan} before placing order");
}
Console.WriteLine();
}
public static async IAsyncEnumerable <AlmostOrderedArticlesState.ShoppingCartArticleRemovedInfo> AnalyseAlmostOrderedWithState(IPersistenceEngine engine = null)
{
engine = engine ?? Program.engine;
var loadedMessages = await engine.LoadStreamEntriesAsync(
0,
int.MaxValue, new[]
{
typeof(ShoppingCartCreated),
typeof(ShoppingCartArticleRemoved),
typeof(ShoppingCartOrdered),
typeof(ShoppingCartCancelled)
})
.Select(x => engine.Serializer.Deserialize(x.Payload))
.ToListAsync();
Console.WriteLine("Removed Articles: ");
var almostOrderedState = AlmostOrderedArticlesState.LoadState((AlmostOrderedArticlesState)null,
loadedMessages);
var removedArticles = almostOrderedState
.AlmostOrderedShoppingCartArticles
.ToList();
var groupedByCustomer =
removedArticles
.GroupBy(x => x.CustomerName)
.Select(x => new
{
CustomerName = x.Key,
Articlenumbers = x.GroupBy(y => y.Articlenumber)
.Select(y => new
{
Count = y.Count(),
Articlenumber = y.Key
})
.ToList()
})
.ToList();
foreach (var item in groupedByCustomer)
{
Console.WriteLine($"{item.CustomerName}: {string.Join(", ", item.Articlenumbers.Select(x => "" + x.Count + "x " + x.Articlenumber))} ");
}
Console.WriteLine();
foreach (var item in removedArticles)
{
yield return(item);
}
}
