from transformers import pipeline, Text2TextGenerationPipeline

model_name = "test-BB2"
model = pipeline(
    "text2text-generation",
    model=model_name,
    tokenizer=model_name,
)

class MyText2TextGenerationPipeline(Text2TextGenerationPipeline):
    def __init__(self, *args, default_text=None, **kwargs):
        super().__init__(*args, **kwargs)
        self.default_text = default_text

    def __call__(self, *args, **kwargs):
        if "prompt" not in kwargs and self.default_text is not None:
            kwargs["prompt"] = self.default_text
        return super().__call__(*args, **kwargs)

def generate_text(input_text, default_text="Enter your input text here"):
    generator = MyText2TextGenerationPipeline(
        model=model,
        tokenizer=model.tokenizer,
        default_text=default_text
    )
    return generator(input_text, max_length=100)

# Example usage:
input_text = "The quick brown fox jumps over the lazy dog."
generated_text = generate_text(input_text, default_text="Enter a new input text here")
print(generated_text)