app.py

# --- START OF FULLY CORRECTED AND IMPROVED FILE app.py ---

import gradio as gr
import pandas as pd
import plotly.express as px
import time
from datasets import load_dataset # Import the datasets library

# --- Constants ---
PARAM_CHOICES = ['< 1B', '1B', '5B', '12B', '32B', '64B', '128B', '256B', '> 500B']
PARAM_CHOICES_DEFAULT_INDICES = [0, len(PARAM_CHOICES) - 1]

HF_DATASET_ID = "evijit/orgstats_daily_data"
TAG_FILTER_CHOICES = [ "Audio & Speech", "Time series", "Robotics", "Music", "Video", "Images", "Text", "Biomedical", "Sciences" ]
PIPELINE_TAGS = [ 'text-generation', 'text-to-image', 'text-classification', 'text2text-generation', 'audio-to-audio', 'feature-extraction', 'image-classification', 'translation', 'reinforcement-learning', 'fill-mask', 'text-to-speech', 'automatic-speech-recognition', 'image-text-to-text', 'token-classification', 'sentence-similarity', 'question-answering', 'image-feature-extraction', 'summarization', 'zero-shot-image-classification', 'object-detection', 'image-segmentation', 'image-to-image', 'image-to-text', 'audio-classification', 'visual-question-answering', 'text-to-video', 'zero-shot-classification', 'depth-estimation', 'text-ranking', 'image-to-video', 'multiple-choice', 'unconditional-image-generation', 'video-classification', 'text-to-audio', 'time-series-forecasting', 'any-to-any', 'video-text-to-text', 'table-question-answering' ]

def load_models_data():
    overall_start_time = time.time()
    print(f"Attempting to load dataset from Hugging Face Hub: {HF_DATASET_ID}")
    expected_cols = [ 'id', 'downloads', 'downloadsAllTime', 'likes', 'pipeline_tag', 'tags', 'params', 'organization', 'has_audio', 'has_speech', 'has_music', 'has_robot', 'has_bio', 'has_med', 'has_series', 'has_video', 'has_image', 'has_text', 'has_science', 'is_audio_speech', 'is_biomed', 'data_download_timestamp' ]
    try:
        dataset_dict = load_dataset(HF_DATASET_ID)
        if not dataset_dict: raise ValueError(f"Dataset '{HF_DATASET_ID}' loaded but appears empty.")
        split_name = list(dataset_dict.keys())[0]
        print(f"Using dataset split: '{split_name}'. Converting to Pandas.")
        df = dataset_dict[split_name].to_pandas()
        elapsed = time.time() - overall_start_time
        missing_cols = [col for col in expected_cols if col not in df.columns]
        if missing_cols:
            if 'params' in missing_cols: raise ValueError(f"FATAL: Loaded dataset is missing the crucial 'params' column.")
            print(f"Warning: Loaded dataset is missing some expected columns: {missing_cols}.")
        if 'params' in df.columns:
            df['params'] = pd.to_numeric(df['params'], errors='coerce').fillna(0)
        else:
            df['params'] = 0
            print("CRITICAL WARNING: 'params' column not found in data. Parameter filtering will not work.")
        msg = f"Successfully loaded dataset '{HF_DATASET_ID}' (split: {split_name}) from HF Hub in {elapsed:.2f}s. Shape: {df.shape}"
        print(msg)
        return df, True, msg
    except Exception as e:
        err_msg = f"Failed to load dataset '{HF_DATASET_ID}' from Hugging Face Hub. Error: {e}"
        print(err_msg)
        return pd.DataFrame(), False, err_msg

def get_param_range_values(param_range_labels):
    if not param_range_labels or len(param_range_labels) != 2: return None, None
    min_label, max_label = param_range_labels
    min_val = 0.0 if '<' in min_label else float(min_label.replace('B', ''))
    max_val = float('inf') if '>' in max_label else float(max_label.replace('B', ''))
    return min_val, max_val

def make_treemap_data(df, count_by, top_k=25, tag_filter=None, pipeline_filter=None, param_range=None, skip_orgs=None):
    if df is None or df.empty: return pd.DataFrame()
    filtered_df = df.copy()
    col_map = { "Audio & Speech": "is_audio_speech", "Music": "has_music", "Robotics": "has_robot", "Biomedical": "is_biomed", "Time series": "has_series", "Sciences": "has_science", "Video": "has_video", "Images": "has_image", "Text": "has_text" }
    if tag_filter and tag_filter in col_map:
        target_col = col_map[tag_filter]
        if target_col in filtered_df.columns: filtered_df = filtered_df[filtered_df[target_col]]
        else: print(f"Warning: Tag filter column '{col_map[tag_filter]}' not found in DataFrame.")
    if pipeline_filter:
        if "pipeline_tag" in filtered_df.columns: filtered_df = filtered_df[filtered_df["pipeline_tag"].astype(str) == pipeline_filter]
        else: print(f"Warning: 'pipeline_tag' column not found for filtering.")
    if param_range:
        min_params, max_params = get_param_range_values(param_range)
        is_default_range = (param_range[0] == PARAM_CHOICES[0] and param_range[1] == PARAM_CHOICES[-1])
        if not is_default_range and 'params' in filtered_df.columns:
            if min_params is not None: filtered_df = filtered_df[filtered_df['params'] >= min_params]
            if max_params is not None and max_params != float('inf'): filtered_df = filtered_df[filtered_df['params'] < max_params]
        elif 'params' not in filtered_df.columns: print("Warning: 'params' column not found for filtering.")
    if skip_orgs and len(skip_orgs) > 0:
        if "organization" in filtered_df.columns: filtered_df = filtered_df[~filtered_df["organization"].isin(skip_orgs)]
        else: print("Warning: 'organization' column not found for filtering.")
    if filtered_df.empty: return pd.DataFrame()
    if count_by not in filtered_df.columns:
        print(f"Warning: Metric column '{count_by}' not found. Using 0.")
        filtered_df[count_by] = 0.0
    filtered_df[count_by] = pd.to_numeric(filtered_df[count_by], errors="coerce").fillna(0.0)
    org_totals = filtered_df.groupby("organization")[count_by].sum().nlargest(top_k, keep='first')
    top_orgs_list = org_totals.index.tolist()
    treemap_data = filtered_df[filtered_df["organization"].isin(top_orgs_list)][["id", "organization", count_by]].copy()
    treemap_data["root"] = "models"
    treemap_data[count_by] = pd.to_numeric(treemap_data[count_by], errors="coerce").fillna(0.0)
    return treemap_data

def create_treemap(treemap_data, count_by, title=None):
    if treemap_data.empty:
        fig = px.treemap(names=["No data matches filters"], parents=[""], values=[1])
        fig.update_layout(title="No data matches the selected filters", margin=dict(t=50, l=25, r=25, b=25))
        return fig
    fig = px.treemap(treemap_data, path=["root", "organization", "id"], values=count_by, title=title, color_discrete_sequence=px.colors.qualitative.Plotly)
    fig.update_layout(margin=dict(t=50, l=25, r=25, b=25))
    fig.update_traces(textinfo="label+value+percent root", hovertemplate="<b>%{label}</b><br>%{value:,} " + count_by + "<br>%{percentRoot:.2%} of total<extra></extra>")
    return fig

with gr.Blocks(title="ModelVerse Explorer", fill_width=True) as demo:
    models_data_state = gr.State(pd.DataFrame())
    loading_complete_state = gr.State(False)

    with gr.Row(): gr.Markdown("# 🤗 The Hub Org-Model Atlas")
    with gr.Row():
        with gr.Column(scale=1):
            count_by_dropdown = gr.Dropdown(label="Metric", choices=[("Downloads (last 30 days)", "downloads"), ("Downloads (All Time)", "downloadsAllTime"), ("Likes", "likes")], value="downloads")
            filter_choice_radio = gr.Radio(label="Filter Type", choices=["None", "Tag Filter", "Pipeline Filter"], value="None")
            tag_filter_dropdown = gr.Dropdown(label="Select Tag", choices=TAG_FILTER_CHOICES, value=None, visible=False)
            pipeline_filter_dropdown = gr.Dropdown(label="Select Pipeline Tag", choices=PIPELINE_TAGS, value=None, visible=False)
            
            with gr.Group():
                with gr.Row():
                    param_label_display = gr.Markdown("<div style='font-weight: 500;'>Parameters</div>")
                    reset_params_button = gr.Button("🔄 Reset", visible=False, size="sm", min_width=80)
                
                param_slider = gr.Slider(
                    minimum=0, maximum=len(PARAM_CHOICES) - 1, step=1,
                    value=PARAM_CHOICES_DEFAULT_INDICES,
                    label="Parameter Range", show_label=False # Use a hidden label for accessibility
                )

            top_k_slider = gr.Slider(label="Number of Top Organizations", minimum=5, maximum=50, value=25, step=5)
            skip_orgs_textbox = gr.Textbox(label="Organizations to Skip (comma-separated)", value="TheBloke,MaziyarPanahi,unsloth,modularai,Gensyn,bartowski")
            generate_plot_button = gr.Button(value="Generate Plot", variant="primary", interactive=False)

        with gr.Column(scale=3):
            plot_output = gr.Plot()
            status_message_md = gr.Markdown("Initializing...")
            data_info_md = gr.Markdown("")

    # --- MODIFIED: More robust event handlers for the slider ---
    def _update_slider_ui_elements(current_range_indices):
        """Updates the labels above the slider and the reset button visibility."""
        if not isinstance(current_range_indices, list) or len(current_range_indices) != 2:
            # This is a defensive check to prevent crashes if the input is malformed.
            return gr.update(), gr.update()
            
        min_idx, max_idx = int(current_range_indices[0]), int(current_range_indices[1])
        min_label, max_label = PARAM_CHOICES[min_idx], PARAM_CHOICES[max_idx]
        
        # Using HTML for bold is more reliable in gr.Markdown
        label_md = f"<div style='font-weight: 500;'>Parameters <span style='float: right; font-weight: normal; color: #555;'>{min_label} to {max_label}</span></div>"
        
        is_default = (min_idx == 0 and max_idx == len(PARAM_CHOICES) - 1)
        button_visibility = gr.update(visible=not is_default)
        
        return label_md, button_visibility

    def _reset_param_slider_and_ui():
        """Resets the slider to default and updates the UI elements accordingly."""
        default_label = "<div style='font-weight: 500;'>Parameters</div>"
        return gr.update(value=PARAM_CHOICES_DEFAULT_INDICES), default_label, gr.update(visible=False)

    # Use .change() for better reliability
    param_slider.change(fn=_update_slider_ui_elements, inputs=param_slider, outputs=[param_label_display, reset_params_button])
    reset_params_button.click(fn=_reset_param_slider_and_ui, outputs=[param_slider, param_label_display, reset_params_button])
    
    def _update_button_interactivity(is_loaded_flag): return gr.update(interactive=is_loaded_flag)
    loading_complete_state.change(fn=_update_button_interactivity, inputs=loading_complete_state, outputs=generate_plot_button)

    def _toggle_filters_visibility(choice): return gr.update(visible=choice == "Tag Filter"), gr.update(visible=choice == "Pipeline Filter")
    filter_choice_radio.change(fn=_toggle_filters_visibility, inputs=filter_choice_radio, outputs=[tag_filter_dropdown, pipeline_filter_dropdown])

    # --- MODIFIED: Fixed the timezone handling logic ---
    def ui_load_data_controller(progress=gr.Progress()):
        progress(0, desc=f"Loading dataset '{HF_DATASET_ID}' from Hugging Face Hub...")
        status_msg_ui, data_info_text, load_success_flag = "Loading data...", "", False
        try:
            current_df, load_success_flag, status_msg_from_load = load_models_data()
            if load_success_flag:
                progress(0.9, desc="Processing loaded data...")
                date_display = "Pre-processed (date unavailable)"
                if 'data_download_timestamp' in current_df.columns and not current_df.empty and pd.notna(current_df['data_download_timestamp'].iloc[0]):
                    timestamp = pd.to_datetime(current_df['data_download_timestamp'].iloc[0])
                    # Check if tz-aware. If so, convert. If not, localize.
                    if timestamp.tzinfo is None:
                        ts = timestamp.tz_localize('UTC')
                    else:
                        ts = timestamp.tz_convert('UTC')
                    date_display = ts.strftime('%B %d, %Y, %H:%M:%S %Z')

                param_count = (current_df['params'] > 0).sum() if 'params' in current_df.columns else 0
                data_info_text = f"### Data Information\n- Source: `{HF_DATASET_ID}`\n- Status: {status_msg_from_load}\n- Total models loaded: {len(current_df):,}\n- Models with parameter counts: {param_count:,}\n- Data as of: {date_display}\n"
                status_msg_ui = "Data loaded successfully. Ready to generate plot."
            else:
                data_info_text = f"### Data Load Failed\n- {status_msg_from_load}"
                status_msg_ui = status_msg_from_load
        except Exception as e:
            status_msg_ui = f"An unexpected error occurred: {str(e)}"
            data_info_text = f"### Critical Error\n- {status_msg_ui}"
            print(f"Critical error in ui_load_data_controller: {e}")
        return current_df, load_success_flag, data_info_text, status_msg_ui

    def ui_generate_plot_controller(metric_choice, filter_type, tag_choice, pipeline_choice, 
                                   param_range_indices, k_orgs, skip_orgs_input, df_current_models, progress=gr.Progress()):
        if df_current_models is None or df_current_models.empty:
            return create_treemap(pd.DataFrame(), metric_choice, "Error: Model Data Not Loaded"), "Model data is not loaded or is empty."
        progress(0.1, desc="Preparing data for visualization...")
        tag_to_use = tag_choice if filter_type == "Tag Filter" else None
        pipeline_to_use = pipeline_choice if filter_type == "Pipeline Filter" else None
        orgs_to_skip = [org.strip() for org in skip_orgs_input.split(',') if org.strip()] if skip_orgs_input else []
        
        min_label = PARAM_CHOICES[int(param_range_indices[0])]
        max_label = PARAM_CHOICES[int(param_range_indices[1])]
        param_labels_for_filtering = [min_label, max_label]
        
        treemap_df = make_treemap_data(df_current_models, metric_choice, k_orgs, tag_to_use, pipeline_to_use, param_labels_for_filtering, orgs_to_skip)
        
        progress(0.7, desc="Generating Plotly visualization...")
        title_labels = {"downloads": "Downloads (last 30 days)", "downloadsAllTime": "Downloads (All Time)", "likes": "Likes"}
        chart_title = f"HuggingFace Models - {title_labels.get(metric_choice, metric_choice)} by Organization"
        plotly_fig = create_treemap(treemap_df, metric_choice, chart_title)
        
        if treemap_df.empty:
            plot_stats_md = "No data matches the selected filters. Try adjusting your filters."
        else:
            total_items_in_plot = len(treemap_df['id'].unique())
            total_value_in_plot = treemap_df[metric_choice].sum()
            plot_stats_md = f"## Plot Statistics\n- **Models shown**: {total_items_in_plot:,}\n- **Total {metric_choice}**: {int(total_value_in_plot):,}"
        return plotly_fig, plot_stats_md

    demo.load(fn=ui_load_data_controller, inputs=[], outputs=[models_data_state, loading_complete_state, data_info_md, status_message_md])

    generate_plot_button.click(
        fn=ui_generate_plot_controller,
        inputs=[count_by_dropdown, filter_choice_radio, tag_filter_dropdown, pipeline_filter_dropdown,
                param_slider, top_k_slider, skip_orgs_textbox, models_data_state],
        outputs=[plot_output, status_message_md]
    )

if __name__ == "__main__":
    print(f"Application starting. Data will be loaded from Hugging Face dataset: {HF_DATASET_ID}")
    demo.queue().launch()

# --- END OF FULLY CORRECTED AND IMPROVED FILE app.py ---