import os
import sqlite3

from flask import Flask, g, redirect, url_for

from config import DB_PATH, SECRET_KEY
from database.init_db import init_db


def create_app():
    app = Flask(__name__)
    app.secret_key = SECRET_KEY
    app.config["MAX_CONTENT_LENGTH"] = 16 * 1024 * 1024

    os.makedirs(os.path.dirname(DB_PATH), exist_ok=True)

    with sqlite3.connect(DB_PATH) as conn:
        init_db(conn)

    @app.before_request
    def open_db():
        if "db" not in g:
            g.db = sqlite3.connect(DB_PATH)
            g.db.row_factory = sqlite3.Row

    @app.teardown_appcontext
    def close_db(exception):
        db = g.pop("db", None)
        if db is not None:
            db.close()

    from routes import bp

    app.register_blueprint(bp)

    @app.route("/")
    def index():
        return redirect(url_for("main.documents_1c"))

    return app


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