<?php
defined('BASEPATH') or exit('No direct script access allowed');

class appnotification extends CI_Controller
{

    public function  __construct()
    {
        parent::__construct();

        is_logged_in();
        
        $this->load->model('notification_model', 'notif');
        $this->load->model('Pelanggan_model', 'pelanggan_model');
        $this->load->library('form_validation');
    }

    public function index()
    {
        $data['pelanggan_list'] = $this->pelanggan_model->get_all_for_notification_picker();
        $this->load->view('includes/header');
        $this->load->view('appnotification/index', $data);
        $this->load->view('includes/footer');
    }

    public function send()
    {
        $this->load->helper('fcm_v1_helper');

        // Validate Firebase token before kirim. If no token, relogin (retry) is done in helper.
        if (!fcm_v1_validate_token()) {
            $this->session->set_flashdata('error', 'Firebase token tidak valid. Pastikan file ngojol-trial-firebase-adminsdk JSON ada dan dapat dibaca. Silakan coba lagi.');
            redirect('appnotification/index');
            return;
        }

        $title = $this->input->post('title');
        $message = $this->input->post('message');
        $send_target = $this->input->post('send_target');

        if ($send_target === 'users') {
            $user_ids = $this->input->post('user_ids');
            if (!is_array($user_ids)) {
                $user_ids = array();
            }
            $user_ids = array_unique(array_filter(array_map('intval', $user_ids)));
            if (empty($user_ids)) {
                $this->session->set_flashdata('error', 'Pilih minimal satu pengguna (user).');
                redirect('appnotification/index');
                return;
            }
            $sent = 0;
            $skipped = 0;
            foreach ($user_ids as $uid) {
                if ($uid <= 0) {
                    continue;
                }
                $row = $this->pelanggan_model->get_notification_row_by_id($uid);
                if (!$row) {
                    $skipped++;
                    continue;
                }
                $tok = isset($row->token) ? trim((string) $row->token) : '';
                if ($tok === '' || !fcm_v1_is_valid_device_token($tok)) {
                    $skipped++;
                    continue;
                }
                if ($this->notif->send_notif($title, $message, $tok)) {
                    $sent++;
                } else {
                    $skipped++;
                }
            }
            if ($sent > 0) {
                $msg = 'Notifikasi terkirim ke ' . $sent . ' pengguna.';
                if ($skipped > 0) {
                    $msg .= ' ' . $skipped . ' dilewati (tanpa token FCM valid atau gagal kirim).';
                }
                $this->session->set_flashdata('send', $msg);
            } else {
                $this->session->set_flashdata('error', 'Tidak ada notifikasi terkirim. Pastikan pengguna memiliki token FCM valid (login dari aplikasi).');
            }
            redirect('appnotification/index');
            return;
        }

        $topic = $this->input->post('topic');
        $ok = $this->notif->send_notif($title, $message, $topic);
        if ($ok) {
            $this->session->set_flashdata('send', 'Notifikasi berhasil dikirim');
        } else {
            $this->session->set_flashdata('error', 'Gagal mengirim notifikasi. Firebase token mungkin kedaluwarsa. Silakan coba lagi.');
        }
        redirect('appnotification/index');
    }
}