<?php

namespace Illuminate\Foundation\Console;

use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Http\Request;
use Illuminate\Routing\Route;
use Illuminate\Routing\Router;
use Illuminate\Console\Command;
use Illuminate\Routing\Controller;
use Symfony\Component\Console\Input\InputOption;

class RouteListCommand extends Command
{
    /**
     * The console command name.
     *
     * @var string
     */
    protected $name = 'route:list';

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'List all registered routes';

    /**
     * The router instance.
     *
     * @var \Illuminate\Routing\Router
     */
    protected $router;

    /**
     * An array of all the registered routes.
     *
     * @var \Illuminate\Routing\RouteCollection
     */
    protected $routes;

    /**
     * The table headers for the command.
     *
     * @var array
     */
    protected $headers = ['Domain', 'Method', 'URI', 'Name', 'Action', 'Middleware'];

    /**
     * Create a new route command instance.
     *
     * @param  \Illuminate\Routing\Router  $router
     * @return void
     */
    public function __construct(Router $router)
    {
        parent::__construct();

        $this->router = $router;
        $this->routes = $router->getRoutes();
    }

    /**
     * Execute the console command.
     *
     * @return void
     */
    public function fire()
    {
        if (count($this->routes) == 0) {
            return $this->error("Your application doesn't have any routes.");
        }

        $this->displayRoutes($this->getRoutes());
    }

    /**
     * Compile the routes into a displayable format.
     *
     * @return array
     */
    protected function getRoutes()
    {
        $results = [];

        foreach ($this->routes as $route) {
            $results[] = $this->getRouteInformation($route);
        }

        if ($sort = $this->option('sort')) {
            $results = array_sort($results, function ($value) use ($sort) {
                return $value[$sort];
            });
        }

        if ($this->option('reverse')) {
            $results = array_reverse($results);
        }

        return array_filter($results);
    }

    /**
     * Get the route information for a given route.
     *
     * @param  \Illuminate\Routing\Route  $route
     * @return array
     */
    protected function getRouteInformation(Route $route)
    {
        return $this->filterRoute([
            'host'   => $route->domain(),
            'method' => implode('|', $route->methods()),
            'uri'    => $route->uri(),
            'name'   => $route->getName(),
            'action' => $route->getActionName(),
            'middleware' => $this->getMiddleware($route),
        ]);
    }

    /**
     * Display the route information on the console.
     *
     * @param  array  $routes
     * @return void
     */
    protected function displayRoutes(array $routes)
    {
        $this->table($this->headers, $routes);
    }

    /**
     * Get before filters.
     *
     * @param  \Illuminate\Routing\Route  $route
     * @return string
     */
    protected function getMiddleware($route)
    {
        $middlewares = array_values($route->middleware());

        $middlewares = array_unique(
            array_merge($middlewares, $this->getPatternFilters($route))
        );

        $actionName = $route->getActionName();

        if (! empty($actionName) && $actionName !== 'Closure') {
            $middlewares = array_merge($middlewares, $this->getControllerMiddleware($actionName));
        }

        return implode(',', $middlewares);
    }

    /**
     * Get the middleware for the given Controller@action name.
     *
     * @param  string  $actionName
     * @return array
     */
    protected function getControllerMiddleware($actionName)
    {
        Controller::setRouter($this->laravel['router']);

        $segments = explode('@', $actionName);

        return $this->getControllerMiddlewareFromInstance(
            $this->laravel->make($segments[0]), $segments[1]
        );
    }

    /**
     * Get the middlewares for the given controller instance and method.
     *
     * @param  \Illuminate\Routing\Controller  $controller
     * @param  string  $method
     * @return array
     */
    protected function getControllerMiddlewareFromInstance($controller, $method)
    {
        $middleware = $this->router->getMiddleware();

        $results = [];

        foreach ($controller->getMiddleware() as $name => $options) {
            if (! $this->methodExcludedByOptions($method, $options)) {
                $results[] = Arr::get($middleware, $name, $name);
            }
        }

        return $results;
    }

    /**
     * Determine if the given options exclude a particular method.
     *
     * @param  string  $method
     * @param  array  $options
     * @return bool
     */
    protected function methodExcludedByOptions($method, array $options)
    {
        return (! empty($options['only']) && ! in_array($method, (array) $options['only'])) ||
            (! empty($options['except']) && in_array($method, (array) $options['except']));
    }

    /**
     * Get all of the pattern filters matching the route.
     *
     * @param  \Illuminate\Routing\Route  $route
     * @return array
     */
    protected function getPatternFilters($route)
    {
        $patterns = [];

        foreach ($route->methods() as $method) {
            // For each method supported by the route we will need to gather up the patterned
            // filters for that method. We will then merge these in with the other filters
            // we have already gathered up then return them back out to these consumers.
            $inner = $this->getMethodPatterns($route->uri(), $method);

            $patterns = array_merge($patterns, array_keys($inner));
        }

        return $patterns;
    }

    /**
     * Get the pattern filters for a given URI and method.
     *
     * @param  string  $uri
     * @param  string  $method
     * @return array
     */
    protected function getMethodPatterns($uri, $method)
    {
        return $this->router->findPatternFilters(
            Request::create($uri, $method)
        );
    }

    /**
     * Filter the route by URI and / or name.
     *
     * @param  array  $route
     * @return array|null
     */
    protected function filterRoute(array $route)
    {
        if (($this->option('name') && ! Str::contains($route['name'], $this->option('name'))) ||
             $this->option('path') && ! Str::contains($route['uri'], $this->option('path')) ||
             $this->option('method') && ! Str::contains($route['method'], $this->option('method'))) {
            return;
        }

        return $route;
    }

    /**
     * Get the console command options.
     *
     * @return array
     */
    protected function getOptions()
    {
        return [
            ['method', null, InputOption::VALUE_OPTIONAL, 'Filter the routes by method.'],

            ['name', null, InputOption::VALUE_OPTIONAL, 'Filter the routes by name.'],

            ['path', null, InputOption::VALUE_OPTIONAL, 'Filter the routes by path.'],

            ['reverse', 'r', InputOption::VALUE_NONE, 'Reverse the ordering of the routes.'],

            ['sort', null, InputOption::VALUE_OPTIONAL, 'The column (host, method, uri, name, action, middleware) to sort by.', 'uri'],
        ];
    }
}
