<?php

namespace Slack\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;

use Slack\Client\Payload;
use Slack\Event\Factory as EventFactory;
use Slack\Interactive\Factory as InteractiveFactory;
use Slack\Options\Factory as OptionsFactory;

class CheckRequest
{
	private const LOGKEY = 'MCR';

	/**
	 * Ensure that we have the right token before proceeding.
	 * We should only have 1 message (since the token is an object in the message.)
	 *
	 * @param Request $request
	 * @param Closure $next
	 * @return mixed
	 */
	public function handle(Request $request,Closure $next)
	{
		Log::info(sprintf('%s:Incoming request to [%s]',static::LOGKEY,$request->path()),['m'=>__METHOD__]);

		// For app installs, we have nothing to check.
		if (in_array($request->path(),config('slack.bypass_routes')))
			return $next($request);

		switch ($request->path()) {
			// For slashcmd full validation is done in the controller
			case 'api/slack/slashcmd':
				return $next($request);

			case 'api/slack/event':
				// URL Verification
				if ($request->input('type') === 'url_verification') {
					Log::debug(sprintf('%s:Responding directly to URL Verification',static::LOGKEY),['m'=>__METHOD__,'r'=>$request->all()]);
					return response($request->input('challenge'),200);
				}

				$event = EventFactory::make(new Payload($request->all(),TRUE));
				break;

			case 'api/slack/imsgopt':
				$event = OptionsFactory::make(new Payload(json_decode($request->payload,TRUE),TRUE));
				break;

			case 'api/slack/imsg':
				$event = InteractiveFactory::make(new Payload(json_decode($request->payload,TRUE),TRUE));
				break;

			default:
				// Quietly die if we got here.
				return response('',444);
		}

		// Ignore events for inactive workspaces
		if ($event->enterprise_id AND (! $event->enterprise()->active)) {
			Log::notice(sprintf('%s:IGNORING post, Enterprise INACTIVE [%s]',static::LOGKEY,$event->enterprise_id),['m'=>__METHOD__]);

			// Quietly die if the team is not active
			return response('',200);

		} elseif ((! $event->enterprise_id) AND ((! $event->team()) OR (! $event->team()->active))) {
			Log::notice(sprintf('%s:IGNORING post, Team INACTIVE [%s]',static::LOGKEY,$event->team_id),['m'=>__METHOD__]);

			// Quietly die if the team is not active
			return response('',200);

		} else {
			Log::debug(sprintf('%s:Incoming Request Allowed',static::LOGKEY),['m'=>__METHOD__,'e'=>$event->enterprise_id,'t'=>$event->team_id,'eo'=>$event->enterprise()->id,'to'=>$event->team()]);

			return $next($request);
		}
	}
}