import os
import logging
from pathlib import Path
from flask import Flask

# Local imports
from .utils.settings import get_settings
from .logging_setup import wire_logging_once, get_app_logger, get_engine_logger

from app.blueprints import ui  # ui blueprint
from app.blueprints import api  # api blueprint

def create_app() -> Flask:
    """
    Create and configure the Flask application instance.

    Returns:
        Flask: The configured Flask app.
    """
    # Basic app object
    app = Flask(__name__, template_folder="templates", static_folder="static")

    # logging setup
    wire_logging_once(app)

    app_logger = get_app_logger()

    # Load settings (safe fallback to defaults if file missing)
    settings = get_settings()

    # Secret key loaded from env (warn if missing)
    app.secret_key = os.getenv("SECRET_KEY")
    if not app.secret_key:
        app_logger.warning("[init] SECRET_KEY is not set; sessions may be insecure in production.")

    # Configure storage directory (bind-mount is still handled by sandbox.sh)
    sandbox_storage_default = Path("/data")
    app.config["SANDBOX_STORAGE"] = str(sandbox_storage_default)

    # App metadata available to templates
    app.config["APP_NAME"] = settings.app.name
    app.config["APP_VERSION"] = f"v{settings.app.version_major}.{settings.app.version_minor}"

    # Register blueprints
    app.register_blueprint(ui.bp)
    app.register_blueprint(api.api_bp)

    app_logger = get_app_logger()

    # Example log lines so we know we booted cleanly
    app_logger.info(f"SneakyScope started: {app.config['APP_NAME']} {app.config['APP_VERSION']}")
    app_logger.info(f"SANDBOX_STORAGE: {app.config['SANDBOX_STORAGE']}")

    return app