"""PiCopy – Blueprint: /api/wifi/*."""

import threading
import time

from flask import Blueprint, jsonify, request

from picopy.config import load_cfg, save_cfg
from picopy.wifi import (
    wifi_state, wifi_lock,
    is_ap_active, stop_ap, start_ap,
    connect_client_wifi, update_wifi_state,
    scan_wifi_networks,
)

wifi_bp = Blueprint('wifi', __name__)


@wifi_bp.route('/api/wifi/scan')
def r_wifi_scan():
    nets = scan_wifi_networks()
    return jsonify(nets)


@wifi_bp.route('/api/wifi/connect', methods=['POST'])
def r_wifi_connect():
    data = request.get_json(force=True)
    ssid = data.get('ssid', '').strip()
    pw   = data.get('password', '').strip()
    if not ssid:
        return jsonify(error='SSID fehlt'), 400
    cfg = load_cfg()
    cfg['wifi_ssid']     = ssid
    cfg['wifi_password'] = pw
    save_cfg(cfg)

    def _connect():
        ap_was_active = is_ap_active()
        if ap_was_active:
            stop_ap()
            time.sleep(2)
        ok = connect_client_wifi(ssid, pw)
        if ok:
            time.sleep(5)
            update_wifi_state()
        else:
            if ap_was_active:
                start_ap(cfg.get('ap_ssid', 'PiCopy'), cfg.get('ap_password', 'PiCopy,'))
            update_wifi_state()

    threading.Thread(target=_connect, daemon=True).start()
    return jsonify(ok=True, msg='Verbindungsversuch gestartet')


@wifi_bp.route('/api/wifi/ap', methods=['POST'])
def r_wifi_ap():
    data = request.get_json(force=True)
    ssid = data.get('ssid', '').strip()
    pw   = data.get('password', '').strip()
    if not ssid or len(pw) < 8:
        return jsonify(error='SSID fehlt oder Passwort zu kurz (min. 8 Zeichen)'), 400
    cfg = load_cfg()
    cfg['ap_ssid']     = ssid
    cfg['ap_password'] = pw
    save_cfg(cfg)

    def _restart_ap():
        if is_ap_active():
            stop_ap()
            time.sleep(2)
            start_ap(ssid, pw)
            time.sleep(3)
            with wifi_lock:
                wifi_state.update(mode='ap', ssid=ssid, ip='10.42.0.1')

    threading.Thread(target=_restart_ap, daemon=True).start()
    return jsonify(ok=True)


@wifi_bp.route('/api/wifi/status')
def r_wifi_status():
    with wifi_lock:
        return jsonify(dict(wifi_state))