# dashboard/callbacks/appointments_callbacks.py
import requests
import json
from flask import session
from dash import Input, Output, State, callback, ctx, dash
import os
import sys
sys.path.append('/workspace')

print("appointments_callbacks.py geladen")

API_BASE_URL = os.getenv("API_BASE_URL", "http://192.168.43.100")


@callback(
    dash.Output('output', 'children'),
    dash.Input('calendar', 'lastDateClick')
)
def display_date(date_str):
    if date_str:
        return f"Letzter Klick auf: {date_str}"
    return "Klicke auf ein Datum im Kalender!"


@callback(
    dash.Output('event-output', 'children'),
    dash.Input('calendar', 'lastEventClick')
)
def display_event(event_id):
    if event_id:
        return f"Letztes Event geklickt: {event_id}"
    return "Klicke auf ein Event im Kalender!"


@callback(
    dash.Output('select-output', 'children'),
    dash.Input('calendar', 'lastSelect')
)
def display_select(select_info):
    if select_info:
        return f"Markiert: {select_info['start']} bis {select_info['end']} (ganztägig: {select_info['allDay']})"
    return "Markiere einen Bereich im Kalender!"


@callback(
    dash.Output('calendar', 'events'),
    dash.Input('calendar', 'lastNavClick'),
)
def load_events(view_dates):
    """
    Lädt Events aus der API für den angezeigten Zeitraum im Kalender.
    """
    print("Lade Events für Zeitraum:", view_dates)
    if not view_dates or "start" not in view_dates or "end" not in view_dates:
        return []
    start = view_dates["start"]
    end = view_dates["end"]
    try:
        resp = requests.get(f"{API_BASE_URL}/api/events",
                            params={"start": start, "end": end})
        resp.raise_for_status()
        events = resp.json()
        return events
    except Exception as e:
        print("Fehler beim Laden der Events:", e)
        return []

# --- Modalbox öffnen ---


@callback(
    Output("appointment-modal", "opened"),
    [
        Input("open-appointment-modal-btn", "n_clicks"),
        Input("close-appointment-modal-btn", "n_clicks")
    ],
    State("appointment-modal", "opened"),
    prevent_initial_call=True
)
def toggle_appointment_modal(open_click, close_click, is_open):
    from dash import ctx
    trigger = ctx.triggered_id
    if trigger == "open-appointment-modal-btn" and open_click:
        return True
    if trigger == "close-appointment-modal-btn" and close_click:
        return False
    return is_open