<?php
namespace App\Http\Controllers;


use App\Http\Requests\ImageUploadRequest;
use App\Models\Location;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;

/**
 * This controller handles all actions related to Locations for
 * the Snipe-IT Asset Management application.
 *
 * @version    v1.0
 */
class LocationsController extends Controller
{

    /**
     * Returns a view that invokes the ajax tables which actually contains
     * the content for the locations listing, which is generated in getDatatable.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see LocationsController::getDatatable() method that generates the JSON response
     * @since [v1.0]
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function index()
    {
        // Grab all the locations
        $this->authorize('view', Location::class);
        // Show the page
        return view('locations/index');
    }


    /**
     * Returns a form view used to create a new location.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see LocationsController::postCreate() method that validates and stores the data
     * @since [v1.0]
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function create()
    {
        $this->authorize('create', Location::class);
        return view('locations/edit')
            ->with('item', new Location);
    }


    /**
     * Validates and stores a new location.
     *
     * @todo Check if a Form Request would work better here.
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see LocationsController::getCreate() method that makes the form
     * @since [v1.0]
     * @param ImageUploadRequest $request
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function store(ImageUploadRequest $request)
    {
        $this->authorize('create', Location::class);
        $location = new Location();
        $location->id               = null; // This is required to make Laravels different validation work, it errors if the parameter doesn't exist (maybe a bug)?
        $location->name             = $request->input('name');
        $location->parent_id        = $request->input('parent_id', null);
        $location->currency         = $request->input('currency', '$');
        $location->address          = $request->input('address');
        $location->address2         = $request->input('address2');
        $location->city             = $request->input('city');
        $location->state            = $request->input('state');
        $location->country          = $request->input('country');
        $location->zip              = $request->input('zip');
        $location->ldap_ou          = $request->input('ldap_ou');
        $location->manager_id       = $request->input('manager_id');
        $location->user_id          = Auth::id();

        $location = $request->handleImages($location);

        if ($location->save()) {
            return redirect()->route("locations.index")->with('success', trans('admin/locations/message.create.success'));
        }
        return redirect()->back()->withInput()->withErrors($location->getErrors());
    }


    /**
     * Makes a form view to edit location information.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see LocationsController::postCreate() method that validates and stores
     * @param int $locationId
     * @since [v1.0]
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function edit($locationId = null)
    {
        $this->authorize('update', Location::class);
        // Check if the location exists
        if (is_null($item = Location::find($locationId))) {
            return redirect()->route('locations.index')->with('error', trans('admin/locations/message.does_not_exist'));
        }


        return view('locations/edit', compact('item'));
    }


    /**
     * Validates and stores updated location data from edit form.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see LocationsController::getEdit() method that makes the form view
     * @param ImageUploadRequest $request
     * @param int $locationId
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     * @since [v1.0]
     */
    public function update(ImageUploadRequest $request, $locationId = null)
    {
        $this->authorize('update', Location::class);
        // Check if the location exists
        if (is_null($location = Location::find($locationId))) {
            return redirect()->route('locations.index')->with('error', trans('admin/locations/message.does_not_exist'));
        }


        // Update the location data
        $location->name         = $request->input('name');
        $location->parent_id    = $request->input('parent_id', null);
        $location->currency     = $request->input('currency', '$');
        $location->address      = $request->input('address');
        $location->address2     = $request->input('address2');
        $location->city         = $request->input('city');
        $location->state        = $request->input('state');
        $location->country      = $request->input('country');
        $location->zip          = $request->input('zip');
        $location->ldap_ou      = $request->input('ldap_ou');
        $location->manager_id   = $request->input('manager_id');

        $location = $request->handleImages($location);


        if ($location->save()) {
            return redirect()->route("locations.index")->with('success', trans('admin/locations/message.update.success'));
        }
        return redirect()->back()->withInput()->withInput()->withErrors($location->getErrors());
    }

    /**
     * Validates and deletes selected location.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param int $locationId
     * @since [v1.0]
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function destroy($locationId)
    {
        $this->authorize('delete', Location::class);
        if (is_null($location = Location::find($locationId))) {
            return redirect()->to(route('locations.index'))->with('error', trans('admin/locations/message.not_found'));
        }

        if ($location->users()->count() > 0) {
            return redirect()->to(route('locations.index'))->with('error', trans('admin/locations/message.assoc_users'));
        } elseif ($location->children()->count() > 0) {
            return redirect()->to(route('locations.index'))->with('error', trans('admin/locations/message.assoc_child_loc'));
        } elseif ($location->assets()->count() > 0) {
            return redirect()->to(route('locations.index'))->with('error', trans('admin/locations/message.assoc_assets'));
        } elseif ($location->assignedassets()->count() > 0) {
            return redirect()->to(route('locations.index'))->with('error', trans('admin/locations/message.assoc_assets'));
        }

        if ($location->image) {
            try  {
                Storage::disk('public')->delete('locations/'.$location->image);
            } catch (\Exception $e) {
                \Log::error($e);
            }
        }
        $location->delete();
        return redirect()->to(route('locations.index'))->with('success', trans('admin/locations/message.delete.success'));
    }


    /**
    * Returns a view that invokes the ajax tables which actually contains
    * the content for the locations detail page.
    *
    * @author [A. Gianotto] [<snipe@snipe.net>]
    * @param int $id
    * @since [v1.0]
    * @return \Illuminate\Contracts\View\View
     */
    public function show($id = null)
    {
        $location = Location::find($id);

        if (isset($location->id)) {
            return view('locations/view', compact('location'));
        }

        return redirect()->route('locations.index')->with('error', trans('admin/locations/message.does_not_exist'));
    }

}