from __future__ import annotations
from flask import Flask, render_template
from datetime import datetime

# bestehende Blueprints
from .routes.structures import bp as structures_bp
from .routes.cookbook   import bp as cookbook_bp
from .routes.archive    import bp as archive_bp
# NEU: Blueprint-ID API
from .routes.blueprints import bp as blueprints_api_bp

def create_app() -> Flask:
    app = Flask(__name__, template_folder="templates")

    # Jinja-Filter für Timestamps (wird in Templates genutzt)
    def fmt_ts(value):
        if not value:
            return ""
        try:
            # akzeptiert "YYYY-mm-ddTHH:MM:SS" etc.
            if isinstance(value, (int, float)):
                return datetime.fromtimestamp(value).strftime("%Y-%m-%d %H:%M")
            s = str(value).replace("T", " ").split("+", 1)[0]
            return s[:16]
        except Exception:
            return str(value)
    app.jinja_env.filters["fmt_ts"] = fmt_ts

    # Blueprints registrieren
    app.register_blueprint(structures_bp)
    app.register_blueprint(cookbook_bp)
    app.register_blueprint(archive_bp)
    app.register_blueprint(blueprints_api_bp)  # <-- neu

    # Home + Favicon
    @app.get("/")
    def home():
        return render_template("index.html")

    @app.get("/favicon.ico")
    def _favicon():
        return ("", 204)

    return app