#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
Repository Input Component

This module provides the UI component for entering a GitHub repository URL.
"""

import gradio as gr
import re
import logging

logger = logging.getLogger(__name__)


def validate_github_url(url):
    """
    Validate that the input is a proper GitHub repository URL.
    
    Args:
        url (str): The URL to validate.
        
    Returns:
        str or None: Error message if invalid, None if valid.
    """
    if not url:
        return None
    
    # Basic GitHub URL pattern
    pattern = r'^https?://github\.com/[\w.-]+/[\w.-]+/?$'
    if not re.match(pattern, url):
        return "Please enter a valid GitHub repository URL"
    return None


def create_repo_input():
    """
    Create the repository input component.
    
    Returns:
        tuple: (repo_url, github_token, submit_btn) - The repository URL input, GitHub token input, and submit button.
    """
    with gr.Group():
        gr.Markdown("### 📂 GitHub Repository")
        
        repo_url = gr.Textbox(
            label="Repository URL",
            placeholder="https://github.com/username/repository",
            info="Enter the URL of a GitHub repository",
        )
        
        github_token = gr.Textbox(
            label="GitHub Token (Optional)",
            placeholder="For private repositories only",
            info="Required only for private repositories",
            type="password",
            visible=True
        )
        
        submit_btn = gr.Button(
            value="Analyze Repository",
            variant="primary",
            scale=0,
        )
        
        # Add validation for GitHub URL format
        error_box = gr.Textbox(
            label="Error",
            visible=True,
            interactive=False,
            container=False,
            show_label=False
        )
        
        repo_url.change(
            fn=validate_github_url,
            inputs=[repo_url],
            outputs=[error_box],
            show_progress=False
        )
    
    return repo_url, github_token, submit_btn