/// <summary>
/// Add Graphity with a user defined configuration
/// </summary>
/// <typeparam name="TContext"></typeparam>
/// <param name="services"></param>
/// <param name="setupAction">Use this to configure the graph.</param>
/// <returns></returns>
public static IServiceCollection AddGraphity <TContext>(
this IServiceCollection services,
Action <IQueryOptions <TContext> > setupAction)
where TContext : DbContext
{
var contextService = services.SingleOrDefault(sd => sd.ImplementationType == typeof(TContext));
if (contextService == null)
{
throw new GraphityException("Unable to configure Graphity when the context service hasn't been registered");
}
var queryOptions = new QueryOptions <TContext>();
setupAction?.Invoke(queryOptions);
DynamicQuery <TContext> .QueryOptions = queryOptions;
services.AddSingleton <IDocumentExecuter, DocumentExecuter>();
services.AddSingleton <IScopedDependencyResolver>(serviceProvider => new ScopedFuncDependencyResolver(serviceProvider.GetRequiredService, serviceProvider.CreateScope));
services.AddSingleton <ISchema, DynamicSchema <TContext> >();
services.AddSingleton <DynamicQuery <TContext> >();
services.AddSingleton <ObjectGraphType>();
services.AddSingleton <GuidGraphType>();
//Where
services.AddSingleton <WhereExpressionType>();
services.AddSingleton <ComparisonType>();
GraphTypeTypeRegistry.Register <Comparison, ComparisonType>();
GraphTypeTypeRegistry.Register <WhereExpression, WhereExpressionType>();
//Ordering
services.AddSingleton <OrderByExpressionType>();
services.AddSingleton <OrderByDirectionType>();
GraphTypeTypeRegistry.Register <OrderByDirection, OrderByDirectionType>();
GraphTypeTypeRegistry.Register <OrderByExpression, OrderByExpressionType>();
foreach (var field in queryOptions.GetAllFields())
{
var graphType = typeof(DynamicObjectGraphType <,>).MakeGenericType(typeof(TContext), field.Type);
services.AddSingleton(
graphType,
Activator.CreateInstance(graphType, field, (Action <Type>)TypeRegistrar));
}
AddGraphQLAuth(services, queryOptions.AuthorisationPolicies);
void TypeRegistrar(Type type) => services.AddSingleton(type);
return(services);
}