import gradio as gr

from backend import get_message_single, get_message_spam, send_single, send_spam
from defaults import (
    ADDRESS_BETTERTRANSFORMER,
    ADDRESS_VANILLA,
    defaults_bt_single,
    defaults_bt_spam,
    defaults_vanilla_single,
    defaults_vanilla_spam,
)

with gr.Blocks() as demo:
    gr.Markdown(
        """
    Let's try out TorchServe + BetterTransformer!

    BetterTransformer is a feature made available with PyTorch 1.13. allowing to use a fastpath execution for encoder attention blocks.

    As a one-liner, you can use BetterTransformer with compatible Transformers models:

    ```
    better_model = BetterTransformer.transform(model)
    ```

    This Space is a demo of an **end-to-end** deployement of PyTorch eager-mode models, both with and without BetterTransformer. The goal is to see what are the benefits server-side and client-side of using BetterTransformer.
    
    ## Inference using...
    """
    )

    with gr.Row():
        with gr.Column(scale=50):
            gr.Markdown("### Vanilla Transformers + TorchServe")

            address_input_vanilla = gr.Textbox(
                max_lines=1, label="ip vanilla", value=ADDRESS_VANILLA, visible=False
            )

            input_model_vanilla = gr.Textbox(
                max_lines=1,
                label="Text",
                value="Expectations were low, enjoyment was high",
            )

            btn_single_vanilla = gr.Button("Send single text request")
            output_single_vanilla = gr.Markdown(
                label="Output single vanilla",
                value=get_message_single(**defaults_vanilla_single),
            )

            btn_spam_vanilla = gr.Button(
                "Spam text requests (from sst2 validation set)"
            )
            output_spam_vanilla = gr.Markdown(
                label="Output spam vanilla",
                value=get_message_spam(**defaults_vanilla_spam),
            )

            btn_single_vanilla.click(
                fn=send_single,
                inputs=[input_model_vanilla, address_input_vanilla],
                outputs=output_single_vanilla,
            )
            btn_spam_vanilla.click(
                fn=send_spam,
                inputs=[address_input_vanilla],
                outputs=output_spam_vanilla,
            )

        with gr.Column(scale=50):
            gr.Markdown("### BetterTransformer + TorchServe")

            address_input_bettertransformer = gr.Textbox(
                max_lines=1,
                label="ip bettertransformer",
                value=ADDRESS_BETTERTRANSFORMER,
                visible=False,
            )

            input_model_bettertransformer = gr.Textbox(
                max_lines=1,
                label="Text",
                value="Expectations were low, enjoyment was high",
            )

            btn_single_bt = gr.Button("Send single text request")
            output_single_bt = gr.Markdown(
                label="Output single bt", value=get_message_single(**defaults_bt_single)
            )

            btn_spam_bt = gr.Button("Spam text requests (from sst2 validation set)")
            output_spam_bt = gr.Markdown(
                label="Output spam bt", value=get_message_spam(**defaults_bt_spam)
            )

            btn_single_bt.click(
                fn=send_single,
                inputs=[input_model_bettertransformer, address_input_bettertransformer],
                outputs=output_single_bt,
            )

            btn_spam_bt.click(
                fn=send_spam,
                inputs=[address_input_bettertransformer],
                outputs=output_spam_bt,
            )

demo.queue(concurrency_count=1)
demo.launch()