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

# Local imports
from app.utils.settings import get_settings
from app.logging_setup import wire_logging_once, get_app_logger
from app.app_settings import AppSettings

from app.blueprints.main import bp as main_bp  # ui blueprint
from app.blueprints.api import api_bp as api_bp  # api blueprint
from app.blueprints.roadmap import bp as roadmap_bp # roadmap
from app.blueprints.changelog import bp as changelog_bp # changelog

  

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.")

    
    # version
    version = f"v{AppSettings.version_major}.{AppSettings.version_minor}"

    # allow branding for name if they don't match our name
    branded_name = settings.branding.name
    if branded_name == AppSettings.name:
        public_name = AppSettings.name
        footer = f"{AppSettings.copyright} {public_name} {version} - {AppSettings.tagline}"
    else:
        public_name = f"{branded_name}"
        link = f'<a href="{AppSettings.url}" target="_blank">{AppSettings.name}</a>'
        footer = f"{AppSettings.copyright} {public_name} powered by {link} {version} - {AppSettings.tagline}"

    # web header / footer
    header = f"{public_name}"

    # App metadata available to templates
    app.config["APP_NAME"] = public_name
    app.config["APP_VERSION"] = version
    app.config["WEB_HEADER"] = header
    app.config["WEB_FOOTER"] = footer

    # roadmap file
    app.config["ROADMAP_FILE"] = str(Path(app.root_path) / "docs" / "roadmap.yaml")
    app.config["CHANGELOG_FILE"] = str(Path(app.root_path) / "docs" / "changelog.yaml")

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


    # Register blueprints
    app.register_blueprint(main_bp)
    app.register_blueprint(api_bp)
    app.register_blueprint(roadmap_bp)
    app.register_blueprint(changelog_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