"""Aplicatia Flask: fabrica, blueprint-uri, filtre Jinja."""
from __future__ import annotations

from datetime import datetime
from pathlib import Path

from flask import Flask

from . import db
from .config import Config
from .labels import _format_datetime, _format_weight
from .logging_setup import configure_logging
from .scale import create_scale


def create_app(test_config: dict | None = None) -> Flask:
    app = Flask(__name__, instance_relative_config=False)
    app.config.from_object(Config)
    if test_config:
        app.config.update(test_config)

    instance_dir = Path(app.config["INSTANCE_DIR"])
    instance_dir.mkdir(parents=True, exist_ok=True)
    Path(app.config["DATABASE"]).parent.mkdir(parents=True, exist_ok=True)

    db.register(app)
    create_scale(app)
    if not app.config.get("TESTING"):
        configure_logging()

    with app.app_context():
        db.init_db()

    from .routes import (api, components, fields, history, label_templates, main, monitor,
                         printing, recipes)

    app.register_blueprint(main.bp)
    app.register_blueprint(components.bp)
    app.register_blueprint(recipes.bp)
    app.register_blueprint(label_templates.bp)
    app.register_blueprint(fields.bp)
    app.register_blueprint(printing.bp)
    app.register_blueprint(history.bp)
    app.register_blueprint(monitor.bp)
    app.register_blueprint(api.bp)

    app.jinja_env.filters["weight"] = _format_weight
    app.jinja_env.filters["dt"] = _format_datetime

    @app.context_processor
    def inject_globals():
        from .db import all_settings

        return {
            "app_settings": all_settings(),
            "current_year": datetime.now().year,
            "app_version": "0.1.0",
        }

    return app