all_types = ["System.Action", "System.Threading.Tasks.Task", "YarnTask", "IEnumerator", "Coroutine", "Awaitable", "UniTask"]

doc_template = '/// <inheritdoc cref="IActionRegistration.AddCommandHandler(string, Delegate)"/>'
imp_template = "public static void AddCommandHandler(this IActionRegistration registration, string commandName, System.Func<{0}> handler) => registration.AddCommandHandler(commandName, (Delegate)handler);"
imp_numeric_template = "public static void AddCommandHandler<{1}>(this IActionRegistration registration, string commandName, System.Func<{1}, {0}> handler) => registration.AddCommandHandler(commandName, (Delegate)handler);"

# System.Action has a slightly different signature so needs a tweaked template
imp_action_template = "public static void AddCommandHandler(this IActionRegistration registration, string commandName, System.Action handler) => registration.AddCommandHandler(commandName, (Delegate)handler);"
imp_action_numeric_template = "public static void AddCommandHandler<{1}>(this IActionRegistration registration, string commandName, System.Action<{1}> handler) => registration.AddCommandHandler(commandName, (Delegate)handler);"

def gyb(count, types):
    for type in types:
        print(f"// These registrations for {type} were generated by action-gyb.py")

        # generating the registration for the 0 parameter form
        print(doc_template)

        # true' if True else 'false'
        template = imp_template if type != "System.Action" else imp_action_template
        print(template.format(type))
        
        # generating the registration for the 1->count parameter forms
        for i in range(count):
            print(doc_template)
            
            # generating the <T1, T2> etc type values
            r = ["T" + str(x) for x in range(1, i + 2)]
            s = ", ".join(r)
            template = imp_numeric_template if type != "System.Action" else imp_action_numeric_template
            print(template.format(type, s))
        print()

gyb(16, all_types)