import os
from flask import Flask
from .extensions import db, migrate, login_manager, csrf
from .config import Config
from flask_wtf.csrf import generate_csrf

def create_app():
    app = Flask(__name__, static_folder="static", template_folder="templates")
    app.config.from_object(Config)
    os.makedirs(app.config.get("UPLOAD_FOLDER"), exist_ok=True)
    os.makedirs(os.path.join(app.config.get("UPLOAD_FOLDER"), "identity"), exist_ok=True)
    os.makedirs(os.path.join(app.config.get("UPLOAD_FOLDER"), "posts"), exist_ok=True)
    os.makedirs(os.path.join(app.config.get("UPLOAD_FOLDER"), "activities"), exist_ok=True)
    db.init_app(app)
    migrate.init_app(app, db)
    login_manager.init_app(app)
    csrf.init_app(app)
    with app.app_context():
        db.create_all()
    @app.context_processor
    def inject_csrf():
        return dict(csrf_token=generate_csrf())
    from .blueprints.auth import bp as auth_bp
    from .blueprints.users import bp as users_bp
    from .blueprints.posts import bp as posts_bp
    from .blueprints.comments import bp as comments_bp
    from .blueprints.follows import bp as follows_bp
    from .blueprints.feed import bp as feed_bp
    from .blueprints.activities import bp as activities_bp
    from .blueprints.admin import bp as admin_bp
    from .blueprints.main import bp as main_bp
    from .blueprints.setup import bp as setup_bp
    app.register_blueprint(auth_bp)
    app.register_blueprint(main_bp)
    app.register_blueprint(setup_bp)
    app.register_blueprint(users_bp)
    app.register_blueprint(posts_bp)
    app.register_blueprint(comments_bp)
    app.register_blueprint(follows_bp)
    app.register_blueprint(feed_bp)
    app.register_blueprint(activities_bp)
    app.register_blueprint(admin_bp)
    from .cli import register_cli
    register_cli(app)
    @app.before_request
    def ensure_admin_setup():
        from .models import User
        from flask import request, redirect, url_for
        try:
            has_admin = User.query.filter_by(role="admin").first() is not None
        except Exception:
            has_admin = True
        if not has_admin:
            if not (request.path.startswith("/setup/admin") or request.path.startswith("/static")):
                return redirect(url_for("setup.admin"))
    return app