from flask import Flask, request
from flask_migrate import Migrate  # Add this line
from .config import Config
from .db import db
from .models import init_schedule_config
from .models import ActivityLog, ActivityCategory
from .blueprints import register_blueprints
from .scheduler import ScraperScheduler

def create_app(test_config=None):
    app = Flask(__name__, instance_relative_config=True)
    app.config.from_object(Config)

    # Ensure the instance folder exists
    import os
    try:
        os.makedirs(app.instance_path)
    except OSError:
        pass

    # Set the database URI to use absolute path if it's the default relative path
    if app.config['SQLALCHEMY_DATABASE_URI'] == "sqlite:///instance/papers.db":
        db_path = os.path.join(app.instance_path, 'papers.db')
        app.config['SQLALCHEMY_DATABASE_URI'] = f'sqlite:///{db_path}'

    if test_config:
        app.config.update(test_config)

    db.init_app(app)
    migrate = Migrate(app, db) 

    with app.app_context():
        db.create_all()
        init_schedule_config()

    # Initialize APScheduler
    scheduler = ScraperScheduler(app)
    
    # Store scheduler in app config for access from other modules
    app.config['SCHEDULER'] = scheduler

    @app.context_processor
    def inject_app_title():
        return {"app_title": app.config["APP_TITLE"]}

    register_blueprints(app)

    @app.before_request
    def before_request():
        # Skip logging for static files, health checks, or other frequent requests
        if request.path.startswith('/static/') or request.path == '/health' or request.path == '/favicon.ico':
            return
            
        # Skip task status checks to avoid log spam
        if request.path.startswith('/task_status/'):
            return
        
        action = request.endpoint or request.path or "unknown_request"
        ActivityLog.log_gui_interaction(
            action=action,
            description=f"Request to {request.path}",
            extra={"method": request.method, "url": request.url}
        )
        
    return app