<?php
namespace App\Http\Controllers\Components;

use App\Http\Controllers\Controller;
use App\Http\Requests\ImageUploadRequest;
use App\Models\Company;
use App\Models\Component;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Validator;

/**
 * This class controls all actions related to Components for
 * the Snipe-IT Asset Management application.
 *
 * @version    v1.0
 */
class ComponentsController extends Controller
{
    /**
     * Returns a view that invokes the ajax tables which actually contains
     * the content for the components listing, which is generated in getDatatable.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::getDatatable() method that generates the JSON response
     * @since [v3.0]
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function index()
    {
        $this->authorize('view', Component::class);
        return view('components/index');
    }


    /**
     * Returns a form to create a new component.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::postCreate() method that stores the data
     * @since [v3.0]
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function create()
    {
        $this->authorize('create', Component::class);
        return view('components/edit')->with('category_type', 'component')
            ->with('item', new Component);
    }


    /**
     * Validate and store data for new component.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::getCreate() method that generates the view
     * @since [v3.0]
     * @param ImageUploadRequest $request
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function store(ImageUploadRequest $request)
    {
        $this->authorize('create', Component::class);
        $component = new Component();
        $component->name                   = $request->input('name');
        $component->category_id            = $request->input('category_id');
        $component->location_id            = $request->input('location_id');
        $component->company_id             = Company::getIdForCurrentUser($request->input('company_id'));
        $component->order_number           = $request->input('order_number', null);
        $component->min_amt                = $request->input('min_amt', null);
        $component->serial                 = $request->input('serial', null);
        $component->purchase_date          = $request->input('purchase_date', null);
        $component->purchase_cost          = $request->input('purchase_cost', null);
        $component->qty                    = $request->input('qty');
        $component->user_id                = Auth::id();

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

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

    /**
     * Return a view to edit a component.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::postEdit() method that stores the data.
     * @since [v3.0]
     * @param int $componentId
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function edit($componentId = null)
    {
        if ($item = Component::find($componentId)) {
            $this->authorize('update', $item);
            return view('components/edit', compact('item'))->with('category_type', 'component');
        }
        return redirect()->route('components.index')->with('error', trans('admin/components/message.does_not_exist'));
    }


    /**
     * Return a view to edit a component.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::getEdit() method presents the form.
     * @param ImageUploadRequest $request
     * @param int $componentId
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     * @since [v3.0]
     */
    public function update(ImageUploadRequest $request, $componentId = null)
    {
        if (is_null($component = Component::find($componentId))) {
            return redirect()->route('components.index')->with('error', trans('admin/components/message.does_not_exist'));
        }
        $min = $component->numCHeckedOut();
        $validator = Validator::make($request->all(), [
            "qty" => "required|numeric|min:$min"
        ]);

        if ($validator->fails()) {
            return redirect()->back()
                ->withErrors($validator)
                ->withInput();
        }

        $this->authorize('update', $component);

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

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

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

    /**
     * Delete a component.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @since [v3.0]
     * @param int $componentId
     * @return \Illuminate\Http\RedirectResponse
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function destroy($componentId)
    {
        if (is_null($component = Component::find($componentId))) {
            return redirect()->route('components.index')->with('error', trans('admin/components/message.does_not_exist'));
        }

        $this->authorize('delete', $component);

        // Remove the image if one exists
        if (Storage::disk('public')->exists('components/'.$component->image)) {
            try  {
                Storage::disk('public')->delete('components/'.$component->image);
            } catch (\Exception $e) {
                \Log::debug($e);
            }
        }

        $component->delete();
        return redirect()->route('components.index')->with('success', trans('admin/components/message.delete.success'));
    }

    /**
     * Return a view to display component information.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @see ComponentsController::getDataView() method that generates the JSON response
     * @since [v3.0]
     * @param int $componentId
     * @return \Illuminate\Contracts\View\View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function show($componentId = null)
    {
        $component = Component::find($componentId);

        if (isset($component->id)) {
            $this->authorize('view', $component);
            return view('components/view', compact('component'));
        }
        // Redirect to the user management page
        return redirect()->route('components.index')
            ->with('error', trans('admin/components/message.does_not_exist'));
    }
}