import gradio as gr
from github_client import GitHubClient
from models import SearchRequest, SearchResponse
import os
from typing import Optional, Dict, Any, List


def search_pr_opportunities(
    keyword: Optional[str] = None, 
    topic: Optional[str] = None, 
    per_page: int = 5, 
    page: int = 1, 
    token: Optional[str] = None
) -> Dict[str, Any]:
    """Search GitHub for PR opportunities.
    
    Args:
        keyword: Keyword to search in repositories (optional)
        topic: Topic to filter repositories (optional)
        per_page: Number of results per page (default: 5)
        page: Page number (default: 1)
        token: GitHub token for authentication
        
    Returns:
        A dictionary containing opportunities and total count
    """
    if not token:
        token = os.getenv("GITHUB_TOKEN")
    if not token:
        raise gr.Error("GitHub token required in Authorization header or .env")
        
    try:
        client: GitHubClient = GitHubClient(token)
        opportunities, total_count = client.find_pr_opportunities(
            keyword=keyword,
            topic=topic,
            per_page=per_page,
            page=page
        )
        
        # The return structure matches a dictionary format, so we type it as Dict[str, Any]
        response: Dict[str, Any] = {
            "opportunities": [
                {
                    "repo_name": opp.repo_name,
                    "repo_url": opp.repo_url,
                    "issue_title": opp.issue_title,
                    "issue_url": opp.issue_url,
                    "issue_labels": opp.issue_labels,
                    "issue_body": opp.issue_body
                } for opp in opportunities
            ],
            "total_count": total_count
        }
        return response
    except Exception as e:
        raise gr.Error(str(e))

# Create the Gradio interface
demo: gr.Interface = gr.Interface(
    fn=search_pr_opportunities,
    inputs=[
        gr.Textbox(label="Keyword", placeholder="e.g., fastapi"),
        gr.Textbox(label="Topic", placeholder="e.g., python"),
        gr.Slider(minimum=1, maximum=20, value=5, step=1, label="Results per page"),
        gr.Slider(minimum=1, maximum=10, value=1, step=1, label="Page number")
    ],
    outputs=gr.JSON(label="Search Results"),
    title="GitHub PR Opportunity Finder",
    description="Search GitHub repositories for PR opportunities (issues labeled 'good first issue' or 'help wanted')",
    examples=[
        ["fastapi", "python", 5, 1, ""],
        ["react", "javascript", 3, 1, ""],
        ["machine-learning", None, 2, 1, ""],
        [None, "web-development", 4, 1, ""]
    ]
)

# Launch with MCP server enabled
if __name__ == "__main__":
    demo.launch(mcp_server=True)