<?php
namespace App\Http\Controllers;

use App\Helpers\Helper;
use App\Models\Accessory;
use App\Models\Company;
use App\Models\User;
use Auth;
use Carbon\Carbon;
use Config;
use DB;
use Gate;
use Input;
use Lang;
use Mail;
use Redirect;
use Illuminate\Http\Request;
use Slack;
use Str;
use View;

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

    /**
    * Returns a view that invokes the ajax tables which actually contains
    * the content for the accessories listing, which is generated in getDatatable.
    *
    * @author [A. Gianotto] [<snipe@snipe.net>]
    * @see AccessoriesController::getDatatable() method that generates the JSON response
    * @since [v1.0]
    * @return View
    */
    public function index(Request $request)
    {
        $this->authorize('index', Accessory::class);
        return View::make('accessories/index');
    }


  /**
   * Returns a view with a form to create a new Accessory.
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @return View
   */
    public function create(Request $request)
    {
        $this->authorize('create', Accessory::class);
        // Show the page
        return View::make('accessories/edit')
          ->with('item', new Accessory)
          ->with('category_list', Helper::categoryList('accessory'))
          ->with('company_list', Helper::companyList())
          ->with('location_list', Helper::locationsList())
          ->with('manufacturer_list', Helper::manufacturerList());
    }


  /**
   * Validate and save new Accessory from form post
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @return Redirect
   */
    public function store(Request $request)
    {
        $this->authorize(Accessory::class);
        // create a new model instance
        $accessory = new Accessory();

        // Update the accessory data
        $accessory->name                    = request('name');
        $accessory->category_id             = request('category_id');
        $accessory->location_id             = request('location_id');
        $accessory->min_amt                 = request('min_amt');
        $accessory->company_id              = Company::getIdForCurrentUser(request('company_id'));
        $accessory->order_number            = request('order_number');
        $accessory->manufacturer_id         = request('manufacturer_id');
        $accessory->model_number            = request('model_number');
        $accessory->purchase_date           = request('purchase_date');
        $accessory->purchase_cost           = Helper::ParseFloat(request('purchase_cost'));
        $accessory->qty                     = request('qty');
        $accessory->user_id                 = Auth::user()->id;

        // Was the accessory created?
        if ($accessory->save()) {
            $accessory->logCreate();
            // Redirect to the new accessory  page
            return redirect()->route('accessories.index')->with('success', trans('admin/accessories/message.create.success'));
        }
        return redirect()->back()->withInput()->withErrors($accessory->getErrors());
    }

  /**
   * Return view for the Accessory update form, prepopulated with existing data
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @param  int  $accessoryId
   * @return View
   */
    public function edit(Request $request, $accessoryId = null)
    {
        // Check if the accessory exists
        if (is_null($item = Accessory::find($accessoryId))) {
            // Redirect to the blogs management page
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.does_not_exist'));
        }

        $this->authorize($item);

        return View::make('accessories/edit', compact('item'))
          ->with('category_list', Helper::categoryList('accessory'))
          ->with('company_list', Helper::companyList())
          ->with('location_list', Helper::locationsList())
          ->with('manufacturer_list', Helper::manufacturerList());
    }


  /**
   * Save edited Accessory from form post
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @param  int  $accessoryId
   * @return Redirect
   */
    public function update(Request $request, $accessoryId = null)
    {
      // Check if the accessory exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the accessory index page
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.does_not_exist'));
        }

        $this->authorize($accessory);

        // Update the accessory data
        $accessory->name                    = request('name');
        $accessory->location_id             = request('location_id');
        $accessory->min_amt                 = request('min_amt');
        $accessory->category_id             = request('category_id');
        $accessory->company_id              = Company::getIdForCurrentUser(request('company_id'));
        $accessory->manufacturer_id         = request('manufacturer_id');
        $accessory->order_number            = request('order_number');
        $accessory->model_number            = request('model_number');
        $accessory->purchase_date       = request('purchase_date');
        $accessory->purchase_cost       = request('purchase_cost');
        $accessory->qty                     = request('qty');

      // Was the accessory updated?
        if ($accessory->save()) {
            // Redirect to the updated accessory page
            return redirect()->route('accessories.index')->with('success', trans('admin/accessories/message.update.success'));
        }
        return redirect()->back()->withInput()->withErrors($accessory->getErrors());
    }

  /**
   * Delete the given accessory.
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @param  int  $accessoryId
   * @return Redirect
   */
    public function destroy(Request $request, $accessoryId)
    {
        // Check if the blog post exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the blogs management page
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

        $this->authorize($accessory);


        if ($accessory->hasUsers() > 0) {
             return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.assoc_users', array('count'=> $accessory->hasUsers())));
        }
        $accessory->delete();
        // Redirect to the locations management page
        return redirect()->route('accessories.index')->with('success', trans('admin/accessories/message.delete.success'));
    }


  /**
  * Returns a view that invokes the ajax table which  contains
  * the content for the accessory detail view, which is generated in getDataView.
  *
  * @author [A. Gianotto] [<snipe@snipe.net>]
  * @param  int  $accessoryID
  * @see AccessoriesController::getDataView() method that generates the JSON response
  * @since [v1.0]
  * @return View
  */
    public function show(Request $request, $accessoryID = null)
    {
        $accessory = Accessory::find($accessoryID);
        $this->authorize('view', $accessory);
        if (isset($accessory->id)) {
            return View::make('accessories/view', compact('accessory'));
        }
        // Prepare the error message
        $error = trans('admin/accessories/message.does_not_exist', compact('id'));

        // Redirect to the user management page
        return redirect()->route('accessories')->with('error', $error);
    }

  /**
   * Return the form to checkout an Accessory to a user.
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @param  int  $accessoryId
   * @return View
   */
    public function getCheckout(Request $request, $accessoryId)
    {
        // Check if the accessory exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

        $this->authorize('checkout', $accessory);

        // Get the dropdown of users and then pass it to the checkout view
        return View::make('accessories/checkout', compact('accessory'))->with('users_list', Helper::usersList());

    }

  /**
   * Save the Accessory checkout information.
   *
   * If Slack is enabled and/or asset acceptance is enabled, it will also
   * trigger a Slack message and send an email.
   *
   * @author [A. Gianotto] [<snipe@snipe.net>]
   * @param  int  $accessoryId
   * @return Redirect
   */
    public function postCheckout(Request $request, $accessoryId)
    {
      // Check if the accessory exists
        if (is_null($accessory = Accessory::find($accessoryId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.user_not_found'));
        }

        $this->authorize('checkout', $accessory);

        if (!$user = User::find(Input::get('assigned_to'))) {
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

      // Update the accessory data
        $accessory->assigned_to = e(Input::get('assigned_to'));

        $accessory->users()->attach($accessory->id, [
            'accessory_id' => $accessory->id,
            'created_at' => Carbon::now(),
            'user_id' => Auth::id(),
            'assigned_to' => $request->get('assigned_to')
        ]);

        $logaction = $accessory->logCheckout(e(Input::get('note')));

        DB::table('accessories_users')->where('assigned_to', '=', $accessory->assigned_to)->where('accessory_id', '=', $accessory->id)->first();

        $data['log_id'] = $logaction->id;
        $data['eula'] = $accessory->getEula();
        $data['first_name'] = $user->first_name;
        $data['item_name'] = $accessory->name;
        $data['checkout_date'] = $logaction->created_at;
        $data['item_tag'] = '';
        $data['expected_checkin'] = '';
        $data['note'] = $logaction->note;
        $data['require_acceptance'] = $accessory->requireAcceptance();
        // TODO: Port this to new mail notifications
        if (($accessory->requireAcceptance()=='1')  || ($accessory->getEula())) {

            Mail::send('emails.accept-accessory', $data, function ($m) use ($user) {
                $m->to($user->email, $user->first_name . ' ' . $user->last_name);
                $m->replyTo(config('mail.reply_to.address'), config('mail.reply_to.name'));
                $m->subject(trans('mail.Confirm_accessory_delivery'));
            });
        }

      // Redirect to the new accessory page
        return redirect()->route('accessories.index')->with('success', trans('admin/accessories/message.checkout.success'));
    }


    /**
     * Check the accessory back into inventory
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param Request $request
     * @param integer $accessoryUserId
     * @param string $backto
     * @return View
     * @internal param int $accessoryId
     */
    public function getCheckin(Request $request, $accessoryUserId = null, $backto = null)
    {
        // Check if the accessory exists
        if (is_null($accessory_user = DB::table('accessories_users')->find($accessoryUserId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

        $accessory = Accessory::find($accessory_user->accessory_id);
        $this->authorize('checkin', $accessory);
        return View::make('accessories/checkin', compact('accessory'))->with('backto', $backto);
    }


    /**
     * Check in the item so that it can be checked out again to someone else
     *
     * @uses Accessory::checkin_email() to determine if an email can and should be sent
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param Request $request
     * @param integer $accessoryUserId
     * @param string $backto
     * @return Redirect
     * @internal param int $accessoryId
     */
    public function postCheckin(Request $request, $accessoryUserId = null, $backto = null)
    {
      // Check if the accessory exists
        if (is_null($accessory_user = DB::table('accessories_users')->find($accessoryUserId))) {
            // Redirect to the accessory management page with error
            return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.not_found'));
        }

        $accessory = Accessory::find($accessory_user->accessory_id);

        $this->authorize('checkin', $accessory);

        $return_to = e($accessory_user->assigned_to);
        $logaction = $accessory->logCheckin(User::find($return_to), e(Input::get('note')));

        // Was the accessory updated?
        if (DB::table('accessories_users')->where('id', '=', $accessory_user->id)->delete()) {
            if (!is_null($accessory_user->assigned_to)) {
                $user = User::find($accessory_user->assigned_to);
            }

            $data['log_id'] = $logaction->id;
            $data['first_name'] = e($user->first_name);
            $data['item_name'] = e($accessory->name);
            $data['checkin_date'] = e($logaction->created_at);
            $data['item_tag'] = '';
            $data['note'] = e($logaction->note);

            if (($accessory->checkin_email()=='1')) {

                Mail::send('emails.checkin-asset', $data, function ($m) use ($user) {
                    $m->to($user->email, $user->first_name . ' ' . $user->last_name);
                    $m->replyTo(config('mail.reply_to.address'), config('mail.reply_to.name'));
                    $m->subject(trans('mail.Confirm_Accessory_Checkin'));
                });
            }

            if ($backto=='user') {
                return redirect()->route("users.show", $return_to)->with('success', trans('admin/accessories/message.checkin.success'));
            }
            return redirect()->route("accessories.show", $accessory->id)->with('success', trans('admin/accessories/message.checkin.success'));
        }
        // Redirect to the accessory management page with error
        return redirect()->route('accessories.index')->with('error', trans('admin/accessories/message.checkin.error'));
    }

    /**
     * Generates the JSON response for accessories listing view.
     *
     * Example:
     * {
     *  "actions": "(links to available actions)",
     *  "category": "(link to category)",
     *  "company": "My Company",
     *  "location":  "My Location",
     *  "min_amt": 2,
     *  "name":  "(link to accessory),
     *  "numRemaining": 6,
     *  "order_number": null,
     *  "purchase_cost": "0.00",
     *  "purchase_date": null,
     *  "qty": 7
     *  },
     *
     * The names of the fields in the returns JSON correspond directly to the the
     * names of the fields in the bootstrap-tables in the view.
     *
     * For debugging, see at /api/accessories/list
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param Request $request
     * @return string JSON containing accessories and their associated atrributes.
     * @internal param int $accessoryId
     */
    public function getDatatable(Request $request)
    {
        $this->authorize('index', Accessory::class);
        $accessories = Company::scopeCompanyables(
            Accessory::select('accessories.*')
            ->whereNull('accessories.deleted_at')
            ->with('category', 'company', 'manufacturer', 'users', 'location')
        );
        if (Input::has('search')) {
            $accessories = $accessories->TextSearch(e(Input::get('search')));
        }
        $offset = request('offset', 0);
        $limit = request('limit', 50);

        $allowed_columns = ['name','min_amt','order_number','purchase_date','purchase_cost','company','category','model_number', 'manufacturer', 'location'];
        $order = Input::get('order') === 'asc' ? 'asc' : 'desc';
        $sort = in_array(Input::get('sort'), $allowed_columns) ? e(Input::get('sort')) : 'created_at';

        switch ($sort) {
            case 'category':
                $accessories = $accessories->OrderCategory($order);
                break;
            case 'company':
                $accessories = $accessories->OrderCompany($order);
                break;
            case 'location':
                $accessories = $accessories->OrderLocation($order);
                break;
            case 'manufacturer':
                $accessories = $accessories->OrderManufacturer($order);
                break;
            default:
                $accessories = $accessories->orderBy($sort, $order);
                break;
        }

        $accessCount = $accessories->count();
        $accessories = $accessories->skip($offset)->take($limit)->get();

        $rows = array();

        foreach ($accessories as $accessory) {
            $rows[] = $accessory->present()->forDataTable();
        }

        $data = array('total'=>$accessCount, 'rows'=>$rows);

        return $data;
    }


  /**
  * Generates the JSON response for accessory detail view.
  *
  * Example:
  * <code>
  * {
  * "rows": [
  * {
  * "actions": "(link to available actions)",
  * "name": "(link to user)"
  * }
  * ],
  * "total": 1
  * }
  * </code>
  *
  * The names of the fields in the returns JSON correspond directly to the the
  * names of the fields in the bootstrap-tables in the view.
  *
  * For debugging, see at /api/accessories/$accessoryID/view
  *
  * @author [A. Gianotto] [<snipe@snipe.net>]
  * @param  int  $accessoryId
  * @return string JSON containing accessories and their associated atrributes.
  **/
    public function getDataView(Request $request, $accessoryID)
    {
        $accessory = Accessory::find($accessoryID);

        if (!Company::isCurrentUserHasAccess($accessory)) {
            return ['total' => 0, 'rows' => []];
        }

        $accessory_users = $accessory->users;
        $count = $accessory_users->count();

        $rows = array();

        foreach ($accessory_users as $user) {
            $actions = '';
            if (Gate::allows('checkin', $accessory)) {
                $actions .= Helper::generateDatatableButton('checkin', route('checkin/accessory', $user->pivot->id));
            }

            if (Gate::allows('view', $user)) {
                $name = (string) link_to_route('users.show', e($user->present()->fullName()), [$user->id]);
            } else {
                $name = e($user->present()->fullName());
            }

            $rows[] = array(
              'name'          => $name,
              'actions'       => $actions
              );
        }

        $data = array('total'=>$count, 'rows'=>$rows);

        return $data;
    }
}