import gradio as gr
from pathlib import Path
import logging

from code_summarizer import (
    clone_repo,
    summarize_repo,
    upload_summary_to_firebase,
    is_firestore_available
)
# Import device/model status separately
from code_summarizer.summarizer import device as summarizer_device, MODEL_LOADED as SUMMARIZER_LOADED

log = logging.getLogger(__name__)

REPO_CLONE_DIR = "cloned_repo_gradio"

def format_summaries_for_display(summaries: list) -> str:
    if not summaries: return "No summaries generated."
    limit = 5
    output = f"✅ Found {len(summaries)} functions.\n"
    output += f"Firestore available: {'Yes' if is_firestore_available() else 'No'}\n---\n"
    for i, summary in enumerate(summaries[:limit]):
         output += f"File: {summary.get('file_path', '?')}\nLang: {summary.get('language', '?')}\n"
         output += f"Summary: {summary.get('summary', '?')}\n"
         output += f"Embedding: {'Yes' if 'embedding' in summary else 'No'}\n---\n"
    if len(summaries) > limit:
        output += f"... and {len(summaries) - limit} more."
    return output

def summarize_from_url(repo_url: str):
    if not repo_url or not repo_url.startswith("https"):
        yield "❌ Invalid HTTPS GitHub URL."
        return

    if not SUMMARIZER_LOADED:
         yield "❌ Summarizer Model Not Loaded. Cannot proceed."
         return

    yield "⏳ Cloning repository..."
    clone_dir_path = Path(REPO_CLONE_DIR)
    if not clone_repo(repo_url, str(clone_dir_path)):
        yield "❌ Failed to clone repo."
        return

    yield f"⏳ Summarizing code (using {summarizer_device})..."
    summaries = summarize_repo(clone_dir_path, repo_url)
    if not summaries:
        yield "⚠️ Repo cloned, but no functions found."
        return

    status = f"✅ Summarized {len(summaries)} functions."
    yield status + " Uploading to Firebase..."

    upload_count = 0
    if is_firestore_available():
        for summary in summaries:
            try:
                upload_summary_to_firebase(summary)
                upload_count += 1
            except Exception as e:
                log.error(f"Gradio UI: Firebase upload error: {e}")
        status += f" Uploaded {upload_count} to Firebase."
        yield status + "\n---\n" + format_summaries_for_display(summaries)
    else:
        status += " Firebase unavailable, skipping upload."
        yield status + "\n---\n" + format_summaries_for_display(summaries)

def perform_web_search(query: str):
    # Placeholder - Replace with actual search implementation
    return f"🔎 Web search (placeholder) for: '{query}'"

def launch_interface():
    with gr.Blocks(title="Code Summarizer", theme=gr.themes.Soft()) as demo:
        gr.Markdown("# 🔍 Code Summarizer & Search")

        with gr.Tab("Repo Summarizer"):
            repo_url_input = gr.Textbox(label="GitHub Repo URL", placeholder="https://github.com/user/repo")
            summarize_button = gr.Button("Summarize & Upload", variant="primary")
            status_output = gr.Textbox(label="Status / Output", lines=10, interactive=False)
            summarize_button.click(fn=summarize_from_url, inputs=repo_url_input, outputs=status_output)

        with gr.Tab("Web Code Search (Placeholder)"):
            search_query_input = gr.Textbox(label="Search Query", placeholder="e.g., binary search tree cpp")
            search_button = gr.Button("Search Web", variant="secondary")
            search_output_display = gr.Textbox(label="Web Search Results", lines=5, interactive=False)
            search_button.click(fn=perform_web_search, inputs=search_query_input, outputs=search_output_display)

    log.info("Launching Gradio interface...")
    demo.launch()

if __name__ == "__main__":
    # Basic logging setup for the interface if run directly
    logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - [Interface] %(message)s')
    if not SUMMARIZER_LOADED:
         log.error("Summarizer model failed to load. Interface functionality will be limited.")
    # Add this check for Firebase as well, since the interface relies on it
    if not is_firestore_available():
         log.warning("Firebase is not available. Upload/check functionality will be disabled.")
    launch_interface()