<?php

namespace App\Listeners;

use App\Events\TaskUpdate;
use App\Models\Task;
use App\Models\User;
use App\Notifications\DBNotification;
use App\Notifications\FcmNotification;
use App\Notifications\MailNotification;
use Illuminate\Support\Facades\Notification;

class TaskUpdateNotif
{
    /**
     * Create the event listener.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     *
     * @param  TaskUpdate  $event
     * @return void
     */
    public function handle(TaskUpdate $event)
    {
        $payload = $event->message;
        if (isset($payload->data->diff->assignee_id)) {
            $this->assigneeNotifHandler($payload);
        }
        if (isset($payload->data->diff->approver_id)) {
            $this->approverNotifHandler($payload);
        }
        if (isset($payload->data->diff->completed_at)) {
            $this->completedNotifHandler($payload);
        }
        if (isset($payload->data->diff->ready_to_test)) {
            $this->readyNotifHandler($payload);
        }
    }

    public function assigneeNotifHandler($payload) {
        $user = User::findOrFail($payload->data->diff->assignee_id);
        $task = Task::findOrFail($payload->data->original->id);

        $notif = $this->makeNotif($payload, 'assignee', ['task' => $task->title]);

        $this->sendNotifications($user, $notif);
    }

    public function approverNotifHandler($payload) {
        $user = User::findOrFail($payload->data->diff->approver_id);
        $task = Task::findOrFail($payload->data->original->id);

        $notif = $this->makeNotif($payload, 'approver', ['task' => $task->title]);

        $this->sendNotifications($user, $notif);
    }

    public function completedNotifHandler($payload){
        $task = Task::findOrFail($payload->data->original->id);
        $user_ids = array_filter([
            $task->approver_id,
            $task->assignee_id,
            $task->creator_id
        ]);
        $user_ids = array_unique(array_merge($user_ids, $task->watchers));

        $users = User::whereIn('id', $user_ids)->where('id', '!=', auth()->id())->get();

        $notif = $this->makeNotif($payload, 'completed', ['task' => $task->title]);

        $this->sendNotifications($users, $notif);
    }

    public function readyNotifHandler($payload)
    {
        $task = Task::findOrFail($payload->data->original->id);
        $user_ids = array_unique(array_filter([
            $task->approver_id,
            $task->assignee_id,
            $task->creator_id
        ]));

        $users = User::whereIn('id', $user_ids)->where('id', '!=', auth()->id())->get();

        $notif = $this->makeNotif($payload, 'ready', ['task' => $task->title]);

        $this->sendNotifications($users, $notif);
    }

    /**
     * Make notification object
     *
     * @param $payload
     * @param null $route
     * @param array $options
     * @return array
     */
    public function makeNotif($payload, $route = null, $options = []) {
        $route = $route == null ? "" : $route.'.';
        return [
            'greeting' => $this->getMessageLine($payload, $route.'greeting'),
            'subject' => $this->getMessageLine($payload, $route.'subject'),
            'title' => $this->getMessageLine($payload, $route.'title'),
            'body' => $this->getMessageLine($payload, $route.'body', $options)
        ];
    }

    /**
     * Fetch message from notifications lang file
     *
     * @param $payload
     * @param $key
     * @param null $options
     * @return array|\Illuminate\Contracts\Foundation\Application|\Illuminate\Contracts\Translation\Translator|string|null
     *
     */
    public function getMessageLine($payload, $key, $options = [])
    {
        return __('notification.'.$payload->data->table_name.'.'.enum('cruds.inverse.'.$payload->data->crud_id.'.singular_name').'.'.$key, $options);
    }

    /**
     * Call notifications
     *
     * @param $users
     * @param $notif
     */
    public function sendNotifications($users, $notif) {
//        switch ($level) {
//            case "emergency":
////                Notification::send($users, new SmsNotification($notif));
//            case "critical":
//                Notification::send($users, new MailNotification($notif));
//            case "high":
//                Notification::send($users, new DBNotification($notif));
//            case "medium":
//                Notification::send($users, new FcmNotification($notif));
//            case "low":
////                Notification::send($users, new SocketNotification($notif));
//            default:
////                Notification::send($users, new SocketNotification($notif));
//        }
        Notification::send($users, new MailNotification($notif));
        Notification::send($users, new DBNotification($notif));
        Notification::send($users, new FcmNotification($notif));
    }
}