import gradio as gr
from definitions import SIZES_PER_CATEGORY
from predict import Predict

predictor = Predict()

def update_main_categories(main):
    if isinstance(SIZES_PER_CATEGORY[main], list):
        return (
            main,
            "",
            "",
            gr.Dropdown(list(SIZES_PER_CATEGORY[main]), label="Size", interactive=True),
        )
    return (
        main,
        "",
        "",
        gr.Dropdown(
            list(SIZES_PER_CATEGORY[main].keys()),
            label="Size",
            interactive=False,
        ),
    )


def update_sub_categories(main, sub):
    if isinstance(SIZES_PER_CATEGORY[main][sub], list):
        return (
            main,
            sub,
            "",
            gr.Dropdown(
                list(SIZES_PER_CATEGORY[main][sub]), label="Size", interactive=True
            ),
        )
    return (
        main,
        sub,
        "",
        gr.Dropdown(
            list(SIZES_PER_CATEGORY[main][sub].keys()),
            label="Size",
            interactive=False,
        ),
    )


def update_sub_sub_categories(main, sub, sub_sub):
    if isinstance(SIZES_PER_CATEGORY[main][sub][sub_sub], list):
        return (
            main,
            sub,
            sub_sub,
            gr.Dropdown(
                list(SIZES_PER_CATEGORY[main][sub][sub_sub]),
                label="Size",
                interactive=True,
            ),
        )
    return (
        main,
        sub,
        sub_sub,
        gr.Dropdown(
            list(SIZES_PER_CATEGORY[main][sub][sub_sub].keys()),
            label="Size",
            interactive=False,
        ),
    )


def submit_form(
    title,
    description,
    condition,
    main_category,
    sub_category,
    sub_sub_category,
    size,
    color,
    hashtags,
    designer_names,
    followerno,
    # user_score,
):
    print(
        f"Title: {title}, Description: {description}, Condition: {condition}, hashtags: {hashtags}, designer: {designer_names}, Main Category: {main_category}, Sub:{sub_category}, sub_sub:{sub_sub_category},  Size: {size}, Color: {color}, Followers: {followerno}"
    )
    # Create dictionary with all the input fields
    input_dict = {
        "title": title,
        "description": description,
        "condition": condition,
        "category_path": ".".join(filter(None, [main_category, sub_category, sub_sub_category])),
        "size": size,
        "color": color,
        "hashtags": hashtags,
        "designer_names": designer_names,
        "followerno": followerno,
        # "user_score": user_score,
    }
    prediction = predictor.predict(input_dict)
    # Round prediction
    return int(prediction)


def add_hashtag(hashtags, new_hashtag):
    if not new_hashtag:
        return hashtags
    current = hashtags.split() if hashtags else []
    if new_hashtag not in current:
        current.append(new_hashtag)
    return " ".join(current)

def remove_hashtag(hashtags, hashtag_to_remove):
    if not hashtags:
        return ""
    current = hashtags.split()
    try:
        current.remove(hashtag_to_remove.strip())
    except ValueError:
        pass
    return " ".join(current)

def add_designer(designers, new_designer):
    if not new_designer:
        return designers
    current = designers.split() if designers else []
    if new_designer not in current:
        current.append(new_designer)
    return " ".join(current)

def remove_designer(designers, designer_to_remove):
    if not designers:
        return ""
    current = designers.split()
    try:
        current.remove(designer_to_remove.strip())
    except ValueError:
        pass
    return " ".join(current)


with gr.Blocks(theme="argilla/argilla-theme", title="Grailed Price Predictor") as demo:
    global size_text_box
    gr.HTML(
        """
    <h1 style="text-align: center;">Grailed Price Predictor</h1>
    <p>Welcome to our Grailed Price Prediction Model! This project, developed for the ID2223 course,
     demonstrates how modern machine learning systems can be effectively implemented using feature stores and serverless computing.
     To get started, simply fill out the form and click "Submit."</p>
    """
    )

    main_category = gr.State("")
    sub_category = gr.State("")
    sub_sub_category = gr.State("")

    with gr.Group():
        title_text_box = gr.Textbox(label="Title")
        description_text_area = gr.TextArea(label="Description")

        condition_dropdown = gr.Dropdown(
            ["is_new", "is_gently_used", "is_used", "is_worn"],
            label="Condition",
            info="The condition of your item.",
            interactive=True,
        )

        with gr.Row():
            with gr.Column():

                @gr.render(inputs=[main_category, sub_category, sub_sub_category])
                def show_categories(main, sub, sub_sub):
                    global size_text_box
                    main_dropdown = gr.Dropdown(
                        list(SIZES_PER_CATEGORY.keys()),
                        label="Main Category",
                        value=main,
                        interactive=True,
                    )
                    main_dropdown.change(
                        update_main_categories,
                        main_dropdown,
                        [main_category, sub_category, sub_sub_category, size_text_box],
                    )

                    if not main or isinstance(SIZES_PER_CATEGORY[main], list):
                        return

                    sub_dropdown = gr.Dropdown(
                        list(SIZES_PER_CATEGORY[main].keys()),
                        label="Sub Category",
                        interactive=True,
                        value=sub,
                    )
                    sub_dropdown.change(
                        update_sub_categories,
                        [main_dropdown, sub_dropdown],
                        [main_category, sub_category, sub_sub_category, size_text_box],
                    )

                    if not sub or isinstance(SIZES_PER_CATEGORY[main][sub], list):
                        return

                    sub_sub_dropdown = gr.Dropdown(
                        list(SIZES_PER_CATEGORY[main][sub].keys()),
                        label="Sub Sub Category",
                        interactive=True,
                        value=sub_sub,
                    )
                    sub_sub_dropdown.change(
                        update_sub_sub_categories,
                        [main_dropdown, sub_dropdown, sub_sub_dropdown],
                        [main_category, sub_category, sub_sub_category, size_text_box],
                    )

            size_text_box = gr.Dropdown(
                label="Size",
                interactive=False,
            )

        color_text_box = gr.Textbox(label="Color")

        with gr.Row():
            with gr.Column():
                hashtags_state = gr.State("")
                new_hashtag_input = gr.Textbox(label="Add Hashtag")
                with gr.Row():
                    add_hashtag_btn = gr.Button("Add Hashtag")
                    clear_hashtags_btn = gr.Button("Clear All Hashtags")
                hashtags_display = gr.Dataframe(
                    headers=["Hashtag"],
                    interactive=False,
                    label="Current Hashtags"
                )
                
                def update_hashtags_display(hashtags):
                    if not hashtags:
                        return []
                    return [[tag] for tag in hashtags.split()]

                add_hashtag_btn.click(
                    add_hashtag,
                    inputs=[hashtags_state, new_hashtag_input],
                    outputs=hashtags_state
                ).then(
                    update_hashtags_display,
                    inputs=[hashtags_state],
                    outputs=hashtags_display
                ).then(
                    lambda: "", 
                    outputs=new_hashtag_input
                )

                # Add clear functionality
                clear_hashtags_btn.click(
                    lambda: "",  # Clear the state
                    outputs=hashtags_state
                ).then(
                    lambda: [],  # Clear the display
                    outputs=hashtags_display
                )

            with gr.Column():
                designers_state = gr.State("")
                new_designer_input = gr.Textbox(label="Add Designer")
                with gr.Row():
                    add_designer_btn = gr.Button("Add Designer")
                    clear_designers_btn = gr.Button("Clear All Designers")
                designers_display = gr.Dataframe(
                    headers=["Designer"],
                    interactive=False,
                    label="Current Designers"
                )

                def update_designers_display(designers):
                    if not designers:
                        return []
                    return [[designer] for designer in designers.split()]

                add_designer_btn.click(
                    add_designer,
                    inputs=[designers_state, new_designer_input],
                    outputs=designers_state
                ).then(
                    update_designers_display,
                    inputs=[designers_state],
                    outputs=designers_display
                ).then(
                    lambda: "",
                    outputs=new_designer_input
                )

                # Add clear functionality
                clear_designers_btn.click(
                    lambda: "",  # Clear the state
                    outputs=designers_state
                ).then(
                    lambda: [],  # Clear the display
                    outputs=designers_display
                )

        with gr.Row():
            followernoNumber = gr.Number(label="Number of Followers")
            # userScoreNumber = gr.Number(label="Your User Score")

        submitButton = gr.Button("Submit")
        
        # Add output component below submit button
        prediction_output = gr.Textbox(label="Predicted Price (in USD)", interactive=False)
        
        submitButton.click(
            submit_form,
            inputs=[
                title_text_box,
                description_text_area,
                condition_dropdown,
                main_category,
                sub_category,
                sub_sub_category,
                size_text_box,
                color_text_box,
                hashtags_state,
                designers_state,
                followernoNumber,
                # userScoreNumber,
            ],
            outputs=prediction_output
        )


if __name__ == "__main__":
    demo.launch()