Register Services

public class Module {
    public void ConfigureServices(IServiceCollection services)
	{
		// Inline service Type
		services.RegisterApiService(typeof(DataApiService<>).MakeGenericType(typeof(Department)), "Departments");
		
		// Generic notation
		services.RegisterApiService<DataApiService<Department>>("Departments");
		
		// Without prefix
		services.RegisterApiService<AuthService>();
		
		// Delegate without DI Container
		CommandManager.Register(nameof(FeatureService.FeatureList), FeatureService.FeatureList);
		// OR
		CommandManager.Register("HelloWorld", (string? name) => "Hello " + name);
	}

	public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
	{
		app.Use(CommandMiddleware.InvokeAsync);
	}
}

Optional add Exception Handlers

internal class DbExceptionHandler : IExceptionHandler
{
    public void Handle(ref Exception exception)
    {
        if (exception is DbException db)
        {
            switch(db.SqlState) {
                case "23503": 
                    exception = new ForeignKeyException(exception.Message, exception); 
                    break;
            }
        }
    }
}

ExceptionHandlerManager.Register(new DbExceptionHandler());

Examples

API Server

public class DataApiService<T> {
	private List<T> data;
	
	public IEnumerable<T> List() => this.data;
	
	public T? Get(in id) => id < this.data.Count ? this.data[id] : null;
	
	public int Add(T entity, int? id) {
		if (id > 0){
			this.data[id] = entity;
		} else {
			this.data.Add(entity);
		}
		
		return this.data.Count;
	}
}

public class AuthService {
	public bool Login(string login, string pass) => true;
	
	public bool Logout() => true;
}

public class FeatureService {
	public string FeatureList() => new string[] { "RegisterApiService", "Register Delegate", "LightWeight Endpoint" }
}

JS Client

1. GET

    fetch('DepartmentsList')
   

   Result:

    {
    	success: true,
    	result: [{
    		//Department
    	},...]
    }
   

2. GET + query

    fetch('DepartmentsGet?id=1')
   

   Result:

    {
    	success: true,
    	result: {
    		//Department
    	}
    }
   

3. POST + query

    fetch('DepartmentsSave?id=1', {
    		headers: {
    			'Content-Type': 'application/json'
    		},
    		body: JSON.stringify({
    			//Department
    		}),
    		method: 'POST',
    		credentials: 'include'
    	})
   

   Result:

    {
    	success: true,
    	result: 1
    }
   

4. GET without prefix

    fetch('FeatureList')
   

   Result:

    {
    	success: true,
    	result: [ "RegisterApiService", "Register Delegate", "LightWeight Endpoint" ]
    }
   

5. ERROR

    fetch('DepartmentsSave?id=999')
   

   Result:

    {
    	success: false,
    	// Exception details
    }