<?php

namespace App\Http\Controllers\Assets;

use App\Models\Actionlog;
use App\Helpers\Helper;
use App\Http\Controllers\CheckInOutRequest;
use App\Http\Controllers\Controller;
use App\Models\Asset;
use App\Models\AssetModel;
use App\Models\Statuslabel;
use App\Models\Setting;
use App\View\Label;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Session;
use App\Http\Requests\AssetCheckoutRequest;
use App\Models\CustomField;

class BulkAssetsController extends Controller
{
    use CheckInOutRequest;

    /**
     * Display the bulk edit page.
     *
     * This method is super weird because it's kinda of like a controller within a controller.
     * It's main function is to determine what the bulk action in, and then return a view with
     * the information that view needs, be it bulk delete, bulk edit, restore, etc.
     *
     * This is something that made sense at the time, but sort of doesn't make sense now. A JS front-end to determine form
     * action would make a lot more sense here and make things a lot more clear.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @return View
     * @internal param int $assetId
     * @since [v2.0]
     * @throws \Illuminate\Auth\Access\AuthorizationException
     */
    public function edit(Request $request)
    {
        $this->authorize('view', Asset::class);
        
        if (! $request->filled('ids')) {
            return redirect()->back()->with('error', trans('admin/hardware/message.update.no_assets_selected'));
        }

        // Figure out where we need to send the user after the update is complete, and store that in the session
        $bulk_back_url = request()->headers->get('referer');
        session(['bulk_back_url' => $bulk_back_url]);

        $asset_ids = $request->input('ids');
        $assets = Asset::with('assignedTo', 'location', 'model')->find($asset_ids);

        if ($request->filled('bulk_actions')) {


            switch ($request->input('bulk_actions')) {
                case 'labels':
                    $this->authorize('view', Asset::class);

                    return (new Label)
                        ->with('assets', $assets)
                        ->with('settings', Setting::getSettings())
                        ->with('bulkedit', true)
                        ->with('count', 0);

                case 'delete':
                    $this->authorize('delete', Asset::class);
                    $assets->each(function ($assets) {
                        $this->authorize('delete', $assets);
                    });

                    return view('hardware/bulk-delete')->with('assets', $assets);
                   
                case 'restore':
                    $this->authorize('update', Asset::class);
                    $assets->each(function ($asset) {
                        $this->authorize('delete', $asset);
                    });
                    return view('hardware/bulk-restore')->with('assets', $assets);

                case 'edit':
                    $this->authorize('update', Asset::class);

                    return view('hardware/bulk')
                        ->with('assets', $asset_ids)
                        ->with('statuslabel_list', Helper::statusLabelList());
            }
        }

        return redirect()->back()->with('error', 'No action selected');
    }

    /**
     * Save bulk edits
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @return Redirect
     * @internal param array $assets
     * @since [v2.0]
     */
    public function update(Request $request)
    {
        $this->authorize('update', Asset::class);
        $has_errors = 0;
        $error_array = array();

        // Get the back url from the session and then destroy the session
        $bulk_back_url = route('hardware.index');

        if ($request->session()->has('bulk_back_url')) {
            $bulk_back_url = $request->session()->pull('bulk_back_url');
        }

       $custom_field_columns = CustomField::all()->pluck('db_column')->toArray();

     
        if (! $request->filled('ids') || count($request->input('ids')) == 0) {
            return redirect($bulk_back_url)->with('error', trans('admin/hardware/message.update.no_assets_selected'));
        }


        $assets = Asset::whereIn('id', array_keys($request->input('ids')))->get();


        /**
         * If ANY of these are filled, prepare to update the values on the assets.
         *
         * Additional checks will be needed for some of them to make sure the values
         * make sense (for example, changing the status ID to something incompatible with
         * its checkout status.
         */

        if (($request->filled('purchase_date'))
            || ($request->filled('expected_checkin'))
            || ($request->filled('purchase_cost'))
            || ($request->filled('supplier_id'))
            || ($request->filled('order_number'))
            || ($request->filled('warranty_months'))
            || ($request->filled('rtd_location_id'))
            || ($request->filled('requestable'))
            || ($request->filled('company_id'))
            || ($request->filled('status_id'))
            || ($request->filled('model_id'))
            || ($request->filled('next_audit_date'))
            || ($request->filled('null_purchase_date'))
            || ($request->filled('null_expected_checkin_date'))
            || ($request->filled('null_next_audit_date'))
            || ($request->anyFilled($custom_field_columns))

        ) {
            // Let's loop through those assets and build an update array
            foreach ($assets as $asset) {

                $this->update_array = [];

                /**
                 * Leave out model_id and status here because we do math on that later. We have to do some extra
                 * validation and checks on those two.
                 *
                 * It's tempting to make these match the request check above, but some of these values require
                 * extra work to make sure the data makes sense.
                 */
                $this->conditionallyAddItem('purchase_date')
                    ->conditionallyAddItem('expected_checkin')
                    ->conditionallyAddItem('order_number')
                    ->conditionallyAddItem('requestable')
                    ->conditionallyAddItem('supplier_id')
                    ->conditionallyAddItem('warranty_months')
                    ->conditionallyAddItem('next_audit_date');
                    foreach ($custom_field_columns as $key => $custom_field_column) {
                        $this->conditionallyAddItem($custom_field_column); 
                   }

                /**
                 * Blank out fields that were requested to be blanked out via checkbox
                 */
                if ($request->input('null_purchase_date')=='1') {
                    $this->update_array['purchase_date'] = null;
                }

                if ($request->input('null_expected_checkin_date')=='1') {
                    $this->update_array['expected_checkin'] = null;
                }

                if ($request->input('null_next_audit_date')=='1') {
                    $this->update_array['next_audit_date'] = null;
                }

                if ($request->filled('purchase_cost')) {
                    $this->update_array['purchase_cost'] =  $request->input('purchase_cost');
                }

                if ($request->filled('company_id')) {
                    $this->update_array['company_id'] = $request->input('company_id');
                    if ($request->input('company_id') == 'clear') {
                        $this->update_array['company_id'] = null;
                    }
                }

                /**
                 * We're trying to change the model ID - we need to do some extra checks here to make sure
                 * the custom field values work for the custom fieldset rules around this asset. Uniqueness
                 * and requiredness across the fieldset is particularly important, since those are
                 * fieldset-specific attributes.
                 */
                if ($request->filled('model_id')) {
                    $asset->model_id = AssetModel::find($request->input('model_id'))->id;
                }

                /**
                 * We're trying to change the status ID - we need to do some extra checks here to
                 * make sure the status label type is one that makes sense for the state of the asset,
                 * for example, we shouldn't be able to make an asset archived if it's currently assigned
                 * to someone/something.
                 */
                if ($request->filled('status_id')) {
                    $updated_status = Statuslabel::find($request->input('status_id'));

                    // We cannot assign a non-deployable status type if the asset is already assigned.
                    // This could probably be added to a form request.
                    // If the asset isn't assigned, we don't care what the status is.
                    // Otherwise we need to make sure the status type is still a deployable one.
                    if (
                        ($asset->assigned_to == '')
                        || ($updated_status->deployable == '1') && ($asset->assetstatus->deployable == '1')
                    ) {
                        $asset->status_id = $updated_status->id;
                    }

                }

                /**
                 * We're changing the location ID - figure out which location we should apply
                 * this change to:
                 *
                 * 0 - RTD location only
                 * 1 - location ID and RTD location ID
                 * 2 - location ID only
                 *
                 * Note: this is kinda dumb and we should just use human-readable values IMHO. - snipe
                 */
                if ($request->filled('rtd_location_id')) {

                    if (($request->filled('update_real_loc')) && (($request->input('update_real_loc')) == '0')) {
                        $this->update_array['rtd_location_id'] = $request->input('rtd_location_id');
                    }

                    if (($request->filled('update_real_loc')) && (($request->input('update_real_loc')) == '1')) {
                        $this->update_array['location_id'] = $request->input('rtd_location_id');
                        $this->update_array['rtd_location_id'] = $request->input('rtd_location_id');
                    }

                    if (($request->filled('update_real_loc')) && (($request->input('update_real_loc')) == '2')) {
                        $this->update_array['location_id'] = $request->input('rtd_location_id');
                    }

                }


                /**
                 * ------------------------------------------------------------------------------
                 * ANYTHING that happens past this foreach
                 * WILL NOT BE logged in the edit log_meta data
                 *  ------------------------------------------------------------------------------
                 */
                $changed = [];

                foreach ($this->update_array as $key => $value) {

                    if ($this->update_array[$key] != $asset->{$key}) {
                        $changed[$key]['old'] = $asset->{$key};
                        $changed[$key]['new'] = $this->update_array[$key];
                    }

                }

                /**
                 * Start all the custom fields shenanigans
                 */

                // Does the model have a fieldset?
                if ($asset->model->fieldset) {
                    foreach ($asset->model->fieldset->fields as $field) {

                        if ((array_key_exists($field->db_column, $this->update_array)) && ($field->field_encrypted == '1')) {
                            $decrypted_old = Helper::gracefulDecrypt($field, $asset->{$field->db_column});

                            /*
                             * Check if the decrypted existing value is different from one we just submitted
                             * and if not, pull it out of the object since it shouldn't really be updating at all.
                             * If we don't do this, it will try to re-encrypt it, and the same value encrypted two
                             * different times will have different values, so it will *look* like it was updated
                             * but it wasn't.
                             */
                            if ($decrypted_old != $this->update_array[$field->db_column]) {
                                $asset->{$field->db_column} = \Crypt::encrypt($this->update_array[$field->db_column]);
                            } else {
                                /*
                                 * Remove the encrypted custom field from the update_array, since nothing changed
                                 */
                                unset($this->update_array[$field->db_column]);
                                unset($asset->{$field->db_column});
                            }

                            /*
                             * These custom fields aren't encrypted, just carry on as usual
                             */
                        } else {

                            if ((array_key_exists($field->db_column, $this->update_array)) && ($asset->{$field->db_column} != $this->update_array[$field->db_column])) {

                                // Check if this is an array, and if so, flatten it
                                if (is_array($this->update_array[$field->db_column])) {
                                    $asset->{$field->db_column} = implode(', ', $this->update_array[$field->db_column]);
                                } else {
                                    $asset->{$field->db_column} = $this->update_array[$field->db_column];
                                }
                            }
                        }

                    } // endforeach
                }


                // Check if it passes validation, and then try to save
                if (!$asset->update($this->update_array)) {

                    // Build the error array
                    foreach ($asset->getErrors()->toArray() as $key => $message) {
                        for ($x = 0; $x < count($message); $x++) {
                            $error_array[$key][] = trans('general.asset') . ' ' . $asset->id . ': ' . $message[$x];
                            $has_errors++;
                        }
                    }

                }  // end if saved

            } // end asset foreach

            if ($has_errors > 0) {
                return redirect($bulk_back_url)->with('bulk_asset_errors', $error_array);
            }

            return redirect($bulk_back_url)->with('success', trans('admin/hardware/message.update.success'));
        }
        // no values given, nothing to update
        return redirect($bulk_back_url)->with('warning', trans('admin/hardware/message.update.nothing_updated'));
    }

    /**
     * Array to store update data per item
     * @var array
     */
    private $update_array;

    /**
     * Adds parameter to update array for an item if it exists in request
     * @param  string $field field name
     * @return BulkAssetsController Model for Chaining
     */
    protected function conditionallyAddItem($field)
    {
        if (request()->filled($field)) {
            $this->update_array[$field] = request()->input($field);
        }

        return $this;
    }

    /**
     * Save bulk deleted.
     *
     * @author [A. Gianotto] [<snipe@snipe.net>]
     * @param Request $request
     * @return View
     * @throws \Illuminate\Auth\Access\AuthorizationException
     * @internal param array $assets
     * @since [v2.0]
     */
    public function destroy(Request $request)
    {
        $this->authorize('delete', Asset::class);

        $bulk_back_url = route('hardware.index');
        if ($request->session()->has('bulk_back_url')) {
            $bulk_back_url = $request->session()->pull('bulk_back_url');
        }

        if ($request->filled('ids')) {
            $assets = Asset::find($request->get('ids'));
            foreach ($assets as $asset) {
                $update_array['deleted_at'] = date('Y-m-d H:i:s');
                $update_array['assigned_to'] = null;

                DB::table('assets')
                    ->where('id', $asset->id)
                    ->update($update_array);
            } // endforeach

            return redirect($bulk_back_url)->with('success', trans('admin/hardware/message.delete.success'));
            // no values given, nothing to update
        }

        return redirect($bulk_back_url)->with('error', trans('admin/hardware/message.delete.nothing_updated'));
    }

    /**
     * Show Bulk Checkout Page
     * @return View View to checkout multiple assets
     */
    public function showCheckout()
    {
        $this->authorize('checkout', Asset::class);
        // Filter out assets that are not deployable.

        return view('hardware/bulk-checkout');
    }

    /**
     * Process Multiple Checkout Request
     * @return View
     */
    public function storeCheckout(AssetCheckoutRequest $request)
    {

        $this->authorize('checkout', Asset::class);

        try {
            $admin = Auth::user();

            $target = $this->determineCheckoutTarget();

            if (! is_array($request->get('selected_assets'))) {
                return redirect()->route('hardware.bulkcheckout.show')->withInput()->with('error', trans('admin/hardware/message.checkout.no_assets_selected'));
            }

            $asset_ids = array_filter($request->get('selected_assets'));

            if (request('checkout_to_type') == 'asset') {
                foreach ($asset_ids as $asset_id) {
                    if ($target->id == $asset_id) {
                        return redirect()->back()->with('error', 'You cannot check an asset out to itself.');
                    }
                }
            }
            $checkout_at = date('Y-m-d H:i:s');
            if (($request->filled('checkout_at')) && ($request->get('checkout_at') != date('Y-m-d'))) {
                $checkout_at = e($request->get('checkout_at'));
            }

            $expected_checkin = '';

            if ($request->filled('expected_checkin')) {
                $expected_checkin = e($request->get('expected_checkin'));
            }

            $errors = [];
            DB::transaction(function () use ($target, $admin, $checkout_at, $expected_checkin, $errors, $asset_ids, $request) {
                foreach ($asset_ids as $asset_id) {
                    $asset = Asset::findOrFail($asset_id);
                    $this->authorize('checkout', $asset);

                    $error = $asset->checkOut($target, $admin, $checkout_at, $expected_checkin, e($request->get('note')), $asset->name, null);

                    if ($target->location_id != '') {
                        $asset->location_id = $target->location_id;
                        $asset->unsetEventDispatcher();
                        $asset->save();
                    }

                    if ($error) {
                        array_merge_recursive($errors, $asset->getErrors()->toArray());
                    }
                }
            });

            if (! $errors) {
                // Redirect to the new asset page
                return redirect()->to('hardware')->with('success', trans('admin/hardware/message.checkout.success'));
            }
            // Redirect to the asset management page with error
            return redirect()->route('hardware.bulkcheckout.show')->with('error', trans('admin/hardware/message.checkout.error'))->withErrors($errors);
        } catch (ModelNotFoundException $e) {
            return redirect()->route('hardware.bulkcheckout.show')->with('error', $e->getErrors());
        }
        
    }
    public function restore(Request $request) {
        $this->authorize('update', Asset::class);
       $assetIds = $request->get('ids');
      if (empty($assetIds)) {
          return redirect()->route('hardware.index')->with('error', trans('admin/hardware/message.restore.nothing_updated'));
        } else {
            foreach ($assetIds as $key => $assetId) {
                    $asset = Asset::withTrashed()->find($assetId);
                    $asset->restore(); 
            } 
        return redirect()->route('hardware.index')->with('success', trans('admin/hardware/message.restore.success'));
        }
    }
}