private static ITry <ShoppingListWithItems, AddFoodstuffsError> Process(ApiResult <AddFoodstuffsToShoppingListResponse> response) =>
response.Match(
s => Try.Success <ShoppingListWithItems, AddFoodstuffsError>(ToShoppingList(s)),
e => Try.Error <ShoppingListWithItems, AddFoodstuffsError>(e.Message.Match(
"Item already added.", _ => AddFoodstuffsError.FoodstuffAlreadyAdded
)),
noConn => throw new NotImplementedException()
/// <summary>
/// Maps the successful result to a new try.
/// </summary>
public static ITry <B, E> FlatMap <A, E, B>(this ITry <A, E> t, Func <A, ITry <B, E> > f)
{
return(t.Match(
s => f(s),
e => Try.Error <B, E>(e)
));
}
/// <summary>
/// Turns the option into a try using the exception in case of empty option.
/// </summary>
public static ITry <A, E> ToTry <A, E>(this IOption <A> option, Func <Unit, E> e)
{
return(option.Match(
val => Try.Success <A, E>(val),
_ => Try.Error <A, E>(e(Unit.Value))
));
}
/// <summary>
/// If the successful result passes the predicate, returns the original try. Otherwise returns erroneous try with the specified result.
/// </summary>
public static ITry <A, IEnumerable <E> > Where <A, E>(this ITry <A, IEnumerable <E> > t, Func <A, bool> predicate, Func <Unit, E> otherwise)
{
return(t.FlatMap(a => predicate(a).Match(
_ => t,
_ => Try.Error <A, IEnumerable <E> >(new[] { otherwise(Unit.Value) })
)));
}
/// <summary>
/// If the successful result passes the predicate, returns the original try. Otherwise returns erroneous try with the specified result.
/// </summary>
public static ITry <A, E> Where <A, E>(this ITry <A, E> t, Func <A, bool> predicate, Func <Unit, E> otherwise)
{
return(t.FlatMap(a => predicate(a).Match(
_ => t,
_ => Try.Error <A, E>(otherwise(Unit.Value))
)));
}
private static ITry <Unit, SignUpError[]> Error(IEnumerable <SignUpError> errors) => Try.Error <Unit, SignUpError[]>(errors.ToArray());
private static ITry <IAccount, SignInError> Error(SignInError e) => Try.Error <IAccount, SignInError>(e);
public static ITry <T, E> ToTry <T, E>(this bool b, Func <Unit, T> ifTrue, Func <Unit, E> ifFalse)
{
return(b ? Try.Success <T, E>(ifTrue(Unit.Value)) : Try.Error <T, E>(ifFalse(Unit.Value)));
}