import gradio as gr

import generate_annotated_diffs
import statistics

df_manual = generate_annotated_diffs.manual_data_with_annotated_diffs()
df_manual["end_to_start"] = False
n_diffs_manual = len(df_manual)

df_synthetic = generate_annotated_diffs.synthetic_data_with_annotated_diffs()
n_diffs_synthetic = len(df_synthetic)

STATISTICS = {"manual": statistics.get_statistics_for_df(df_manual),
              "synthetic": statistics.get_statistics_for_df(df_synthetic)}


def update_dataset_view(diff_idx, df):
    diff_idx -= 1
    return (df.iloc[diff_idx]['annotated_diff'],
            df.iloc[diff_idx]['commit_msg_start'],
            df.iloc[diff_idx]['commit_msg_end'],
            df.iloc[diff_idx]['session'],
            str(df.iloc[diff_idx]['end_to_start']),
            f"https://github.com/{df.iloc[diff_idx]['repo']}/commit/{df.iloc[diff_idx]['hash']}",)


def update_dataset_view_manual(diff_idx):
    return update_dataset_view(diff_idx, df_manual)


def update_dataset_view_synthetic(diff_idx):
    return update_dataset_view(diff_idx, df_synthetic)


force_light_theme_js_func = """
function refresh() {
    const url = new URL(window.location);

    if (url.searchParams.get('__theme') !== 'light') {
        url.searchParams.set('__theme', 'light');
        window.location.href = url.href;
    }
}
"""

if __name__ == '__main__':
    with gr.Blocks(theme=gr.themes.Soft(), js=force_light_theme_js_func) as application:
        def dataset_view_tab(n_items):
            slider = gr.Slider(minimum=1, maximum=n_items, step=1, value=1,
                               label=f"Sample number (total: {n_items})")

            diff_view = gr.Highlightedtext(combine_adjacent=True, color_map={'+': "green", '-': "red"})
            start_view = gr.Textbox(interactive=False, label="Start message", container=True)
            end_view = gr.Textbox(interactive=False, label="End message", container=True)
            session_view = gr.Textbox(interactive=False, label="Session", container=True)
            is_end_to_start_view = gr.Textbox(interactive=False,
                                              label="Is generated on the 'end-to-start' synthesis step?",
                                              container=True)
            link_view = gr.Markdown()

            view = [
                diff_view,
                start_view,
                end_view,
                session_view,
                is_end_to_start_view,
                link_view
            ]

            return slider, view


        with gr.Tab("Manual"):
            slider_manual, view_manual = dataset_view_tab(n_diffs_manual)

            slider_manual.change(update_dataset_view_manual, inputs=slider_manual,
                                 outputs=view_manual)

        with gr.Tab("Synthetic"):
            slider_synthetic, view_synthetic = dataset_view_tab(n_diffs_synthetic)

            slider_synthetic.change(update_dataset_view_synthetic, inputs=slider_synthetic,
                                    outputs=view_synthetic)
        with gr.Tab("Compare"):
            def layout_for_statistics(statistics_group_name):
                gr.Markdown(f"### {statistics_group_name}")
                stats = STATISTICS[statistics_group_name]
                gr.Number(label="Average deletions number (rel to the initial message length)", interactive=False,
                          value=stats['deletions'].mean().item(), precision=3)
                gr.Number(label="Average insertions number (rel to the result length)", interactive=False,
                          value=stats['insertions'].mean().item(), precision=3)
                gr.Number(label="Average changes number (rel to the result length)", interactive=False,
                          value=stats['changes'].mean().item(), precision=3)


            with gr.Row():
                with gr.Column(scale=1):
                    layout_for_statistics("manual")

                with gr.Column(scale=1):
                    layout_for_statistics("synthetic")

        application.load(update_dataset_view_manual, inputs=slider_manual,
                         outputs=view_manual)

        application.load(update_dataset_view_synthetic, inputs=slider_synthetic,
                         outputs=view_synthetic)

    application.launch()