# File: logs_view.py
# Copyright (C) 2026 Erick Ahmed
# SPDX-License-Identifier: AGPL-3.0-or-later

import pandas as pd
from dash import html, dash_table

def prepare_logs_data(df: pd.DataFrame) -> pd.DataFrame:
    if df is None or df.empty:
        return pd.DataFrame()

    df = df.copy()

    if 'j1939_metadata' in df.columns:
        df['Priority'] = df['j1939_metadata'].apply(lambda x: x.get('Priority') if isinstance(x, dict) else None)
        df['PF'] = df['j1939_metadata'].apply(lambda x: x.get('PF') if isinstance(x, dict) else None)
        df['PS'] = df['j1939_metadata'].apply(lambda x: x.get('PS') if isinstance(x, dict) else None)
        df['SA'] = df['j1939_metadata'].apply(lambda x: x.get('SA') if isinstance(x, dict) else None)
        df['DA'] = df['j1939_metadata'].apply(lambda x: x.get('DA') if isinstance(x, dict) else None)
        df['PGN'] = df['j1939_metadata'].apply(lambda x: x.get('PGN') if isinstance(x, dict) else None)
    else:
        for col in ['Priority', 'PF', 'PS', 'SA', 'DA', 'PGN']:
            df[col] = None

    for i in range(8):
        col = f'b{i}'
        if col in df.columns:
            df[col] = df[col].apply(lambda x: f"{int(x):02X}" if pd.notna(x) else "")
        else:
            df[col] = ""

    if 'ID' in df.columns:
        df['ID'] = df['ID'].astype(str)

    display_cols = ['Timestamp', 'ID', 'DLC', 'b0', 'b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'Priority', 'PF', 'PS', 'SA', 'DA', 'PGN']
    display_df = df[[c for c in display_cols if c in df.columns]]

    return display_df.fillna("")

def get_logs_table_component():
    return html.Div([
        html.Div(id='logs-info-text', className="text-muted mb-2"),
        dash_table.DataTable(
            id='logs-table',
            virtualization=True,
            page_action='none',
            style_table={'overflowX': 'auto', 'height': '75vh', 'overflowY': 'auto'},
            style_header={
                'backgroundColor': '#1a1a1a',
                'color': 'white',
                'fontWeight': 'bold',
                'textAlign': 'center',
                'position': 'sticky',
                'top': 0
            },
            style_data={
                'backgroundColor': '#f8f9fa',
                'color': '#2a2a2a',
                'textAlign': 'center'
            },
            style_data_conditional=[
                {
                    'if': {'row_index': 'odd'},
                    'backgroundColor': 'rgb(240, 240, 240)'
                }
            ],
            style_cell={
                'minWidth': '80px',
                'padding': '5px',
                'textAlign': 'center',
                'fontFamily': 'Segoe UI, Arial, sans-serif'
            }
        )
    ])