import os
from flask import Flask
from extensions import db, login_manager, csrf, hash_password, check_password
from sqlalchemy import text

def create_app():
    app = Flask(__name__)
    app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'team-tryouts-secret-key-change-in-production')
    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///team_tryouts.db'
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    app.config['WTF_CSRF_ENABLED'] = True

    db.init_app(app)
    login_manager.init_app(app)
    csrf.init_app(app)

    from routes.auth import auth_bp
    from routes.tryouts import tryouts_bp
    from routes.evaluations import evaluations_bp
    from routes.users import users_bp
    from routes.main import main_bp
    from routes.teams import teams_bp
    from routes.matches import matches_bp

    app.register_blueprint(auth_bp)
    app.register_blueprint(tryouts_bp)
    app.register_blueprint(evaluations_bp)
    app.register_blueprint(users_bp)
    app.register_blueprint(main_bp)
    app.register_blueprint(teams_bp)
    app.register_blueprint(matches_bp)

    with app.app_context():
        import models
        from models import User, MatchParticipant
        try:
            # Check if the database schema is up to date by testing a query
            # that uses all model columns including team_side for match participants
            db.session.execute(text('SELECT games, team_side FROM match_participants LIMIT 1'))
            db.create_all()
        except Exception:
            # If there's a schema mismatch, drop and recreate all tables
            db.session.rollback()
            db.drop_all()
            db.create_all()
        
        # Seed database if empty
        if User.query.count() == 0:
            from seed import seed_database
            seed_database()

    return app

if __name__ == '__main__':
    app = create_app()
    app.run(debug=True, host='0.0.0.0', port=5000)