import asyncio
from textual import work
from textual.widgets import ListView


@work(exclusive=False)
async def delete_current(app) -> None:
    app.show_status(f"Deleting message {app.current_message_id}...")
    try:
        index = app.current_message_index
        process = await asyncio.create_subprocess_shell(
            f"himalaya message delete {app.current_message_id}",
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
        )
        stdout, stderr = await process.communicate()
        app.show_status(f"{stdout.decode()}", "info")
        if process.returncode == 0:
            # Remove the item from the ListView
            await app.query_one(ListView).pop(index)

            # Find the next message to display using the MessageStore
            next_id, next_idx = app.message_store.find_next_valid_id(index)

            # Show the next available message
            if next_id is not None and next_idx is not None:
                # Set ListView index first to ensure UI is synchronized
                app.query_one(ListView).index = next_idx
                # Now update the current_message_id to trigger content update
                app.current_message_id = next_id
            else:
                # No messages left, just update ListView
                app.query_one(ListView).index = 0
                app.reload_needed = True
        else:
            app.show_status(
                f"Failed to delete message {app.current_message_id}. {stderr.decode()}",
                "error",
            )
    except Exception as e:
        app.show_status(f"Error: {e}", "error")