<?php
/**
* 2012 - 2020 HiPresta
*
* MODULE Gallery
*
* @author    HiPresta <support@hipresta.com>
* @copyright HiPresta 2020
* @license   Addons PrestaShop license limitation
* @link      https://hipresta.com
*
* NOTICE OF LICENSE
*
* Don't use this module on several shops. The license provided by PrestaShop Addons
* for all its modules is valid only once for a single shop.
*/

class AdminGalleryController extends ModuleAdminController
{
    public $errors = array();
    public $error = false;

    public function __construct()
    {
        $this->secure_key = Tools::getValue('secure_key');
        parent::__construct();
    }

    public function init()
    {
        parent::init();
        if ($this->ajax) {
            if ($this->secure_key == $this->module->secure_key) {
                switch (Tools::getValue('action')) {
                    /*Gallery item*/
                    case 'update_status':
                        if (Tools::getValue('status') == '0') {
                            $active = 1;
                        } else {
                            $active = 0;
                        }
                        $gallery = new GalleryItem(Tools::getValue('id'));
                        $gallery->active = $active;
                        $gallery->update();
                        die(Tools::jsonEncode(array(
                            'content' => $this->module->renderGalleriesList(),
                        )));
                    case 'update_helper_list':
                        die(Tools::jsonEncode(array(
                            'content' => $this->module->renderGalleriesList(),
                        )));
                    case 'show_gallery_add_form':
                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->renderAddGalleryForm('add', null),
                        )));
                    case 'show_gallery_update_form':
                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->renderAddGalleryForm('update', Tools::getValue('id')),
                        )));
                    case 'save_gallery':
                        $this->valideatFields();
                        if (!empty($this->errors)) {
                            die(Tools::jsonEncode(array(
                                'error' => true,
                                'errors' => $this->errors,
                            )));
                        } else {
                            $this->module->saveGallery(Tools::getValue('action_type'), Tools::getValue('row_id'));
                            die(Tools::jsonEncode(array(
                                'error' => false,
                            )));
                        }
                        break;
                    case 'delete_gallery_list_item':
                        $gallery = new GalleryItem(Tools::getValue('id'));
                        $gallery->delete();
                        die();
                    /*Gallery item image*/
                    case 'sortable_change_position':
                        $gallery_item = Tools::getValue('gallery_item');
                        if (!empty($gallery_item)) {
                            $i = 1;
                            foreach ($gallery_item as $item) {
                                $this->updatePosition($item['id_item'], Tools::getValue('id_parent'), $i);
                                $i++;
                            }
                        }
                        die();
                    case 'gallery_manage_image':
                        die(Tools::jsonEncode(array(
                            'content' => $this->module->renderGalleryImageList(Tools::getValue('id_gallery')).$this->module->renderAddGalleryImageForm(Tools::getValue('id_gallery'), 'add', null),
                        )));
                    case 'add_gallery_image':
                        if (Tools::getValue('action_type') == 'add') {
                            if ($_FILES['image_file']['name'] == '') {
                                $this->errors['error'] = $this->l('Please select image');
                            }
                        }
                        if (!empty($this->errors)) {
                            die(Tools::jsonEncode(array(
                                'error' => true,
                                'errors' => $this->errors,
                            )));
                        } else {
                            if($this->module->saveGalleryImage(Tools::getValue('action_type'), Tools::getValue('row_id'), Tools::getValue('id_gallery'))) {
                                die(Tools::jsonEncode(array(
                                    'content' => $this->module->renderGalleryImageList(Tools::getValue('id_gallery')).$this->module->renderAddGalleryImageForm(Tools::getValue('id_gallery'), 'add', null),
                                )));
                            } else {
                                die(Tools::jsonEncode(array(
                                    'error' => true,
                                    'errors' => array('error' => $this->l('Something went wrong, please try again'))
                                )));
                            }
                        }
                        break;
                    case 'upload_multiple_images':
                        if (!isset($_FILES['files']) || $_FILES['files']['name'] == '') {
                            die(Tools::jsonEncode(array(
                                'error' => $this->l('Please select image')
                            )));
                        } else {
                            if($this->module->saveMultipleImages(Tools::getValue('id_gallery'))) {
                                die(Tools::jsonEncode(array(
                                    'content' => $this->module->renderGalleryImageList(Tools::getValue('id_gallery')).$this->module->renderAddGalleryImageForm(Tools::getValue('id_gallery'), 'add', null),
                                )));
                            } else {
                                die(Tools::jsonEncode(array(
                                    'error' => $this->l('Some images were not uploaded correctly, please check the file size and format')
                                )));
                            }
                        }
                        break;
                    case 'show_update_gallery_image':
                        die(Tools::jsonEncode(array(
                            'content' => $this->module->renderAddGalleryImageForm(Tools::getValue('id_gallery'), 'update', Tools::getValue('id_image')),
                        )));
                    case 'delete_gallery_image':
                        $gallery_image = new GalleryImage(Tools::getValue('id_image'));
                        if (!empty($gallery_image)) {
                            if ($gallery_image->image) {
                                if (file_exists(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/original/'.$gallery_image->image)) {
                                    unlink(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/original/'.$gallery_image->image);
                                }
                                if (file_exists(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/small/'.$gallery_image->image)) {
                                    unlink(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/small/'.$gallery_image->image);
                                }
                                if (file_exists(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/thumbnail/'.$gallery_image->image)) {
                                    unlink(_PS_MODULE_DIR_.$this->module->name.'/views/img/upload/thumbnail/'.$gallery_image->image);
                                }
                            }
                        }
                        if($gallery_image->delete()){
                            die(Tools::jsonEncode(array(
                                'error' => false,
                                'content' => $this->module->renderGalleryImageList(Tools::getValue('id_gallery'))
                            )));
                        } else {
                            die(Tools::jsonEncode(array(
                                'error' => $this->l('Something went wrong, please refresh the page and try again')
                            )));
                        }
                    case 'displaySocialAccountForm':
                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->adminForms->renderSocialNetworksForm()
                        )));
                    case 'displaySelectedSocialForm':
                        $function = Tools::getValue('social_network');
                        die(Tools::jsonEncode(array(
                            'content' => $this->module->adminForms->$function()
                        )));
                    case 'saveSocialAccount':
                        $this->valideatSocialAccount();
                        if (!$this->error) {
                            $this->module->saveSocialAccount();
                            die(Tools::jsonEncode(array(
                                'error' => false,
                                'message' => $this->l('Social account successfully added'),
                                'content' => $this->module->adminForms->renderSocialAccountsList()
                            )));
                        } else {
                            die(Tools::jsonEncode(array(
                                'error' => $this->error
                            )));
                        }
                    case 'displaySocialAccountEditForm':
                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->adminForms->renderSocialNetworkEditForm((int)Tools::getValue('id_social_account'))
                        )));
                    case 'deleteSocialAccount':
                        $social_account = new GallerySocialAccount((int)Tools::getValue('id_social_account'));
                        if (!$social_account->delete()) {
                            die(Tools::jsonEncode(array(
                                'error' => $this->module->l('Error: couldn\'t delete the social account. Please refresh the page and try again.')
                            )));
                        } else {
                            die(Tools::jsonEncode(array(
                                'error' => false,
                                'content' => $this->module->adminForms->renderSocialAccountsList(),
                                'message' => $this->l('Social Account successfully deleted')
                            )));
                        }
                    case 'selectSocialAccount':
                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->renderSelectSocialAccount(),
                            'message' => $this->l('Social Accounts successfully loaded.')
                        )));
                    case 'loadSocialImages':
                        $social_account = new GallerySocialAccount((int)Tools::getValue('id_social_account'));
                        if (!Validate::isLoadedObject($social_account)) {
                            die(Tools::jsonEncode(array(
                                'error' => $this->module->l('The social account is not found.')
                            )));
                        }

                        if ($social_account->social_network == 'instagram') {
                            $media = Tools::file_get_contents('https://graph.instagram.com/me/media?fields=id,caption,media_url,permalink&access_token='.$social_account->access_token);
                            $media = Tools::jsonDecode($media);
                            if(isset($media->error) && isset($media->error->message)) {
                                die(Tools::jsonEncode(array(
                                    'error' => $this->l('We\'re unable to connect Instagarm. Error message: ').$media->error->message.': '.$this->l('Please try to generate Access Token')
                                )));
                            }

                            $ig_images = array();

                            if (isset($media->data) && $media->data) {
                                foreach ($media->data as $data) {
                                    if (strpos($data->media_url, 'video') !== false) {
                                        continue;
                                    }

                                    $ig_images[] = $data->media_url;
                                }
                            }

                            $ig_next_page = false;
                            if (isset($media->paging) && $media->paging && isset($media->paging->next) && $media->paging->next) {
                                $ig_next_page = $media->paging->next;
                            }

                            die(Tools::jsonEncode(array(
                                'error' => false,
                                'content' => $this->module->loadSocialAccountImages($ig_images, $ig_next_page),
                                'message' => $this->l('Social Account images successfully loaded.')
                            )));

                        } else {
                            die(Tools::jsonEncode(array(
                                'error' => $this->module->l('Sorry, currently you can import images only from Instagram account.')
                            )));
                        }
                    case 'loadMoreImagesIG':
                        $media = Tools::file_get_contents(Tools::getValue('next'));
                        $media = Tools::jsonDecode($media);
                        if(isset($media->error) && isset($media->error->message)) {
                            die(Tools::jsonEncode(array(
                                'error' => $this->l('We\'re unable to connect Instagarm. Error message: ').$media->error->message.': '.$this->l('Please try to generate Access Token')
                            )));
                        }

                        $ig_images = array();

                        if (isset($media->data) && $media->data) {
                            foreach ($media->data as $data) {
                                if (strpos($data->media_url, 'video') !== false) {
                                    continue;
                                }

                                $ig_images[] = $data->media_url;
                            }
                        }

                        $ig_next_page = false;
                        if (isset($media->paging) && $media->paging && isset($media->paging->next) && $media->paging->next) {
                            $ig_next_page = $media->paging->next;
                        }

                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->loadMoreSocialAccountImages($ig_images),
                            'ig_next_page' => $ig_next_page,
                            'message' => $this->l('Images successfully loaded.')
                        )));

                    case 'importSocialImages':
                        $images = Tools::getValue('images');
                        if (!is_array($images) || !$images) {
                            die(Tools::jsonEncode(array(
                                'error' => $this->module->l('Please select images to import')
                            )));
                        }
                        $languages = Language::getLanguages(false);
                        $id_gallery = (int)Tools::getValue('id_gallery');
                        foreach ($images as $image) {
                            $gallery_image = new GalleryImage();
                            $gallery_image->id_gallery = $id_gallery;
                            $gallery_image->image = $this->module->copyImageFromURL($image);
                            if(!$gallery_image->image) {
                                continue;
                            }
                            $gallery_image->position = GalleryImage::getPositionMaxValue();
                            $gallery_image->add();
                        }

                        die(Tools::jsonEncode(array(
                            'error' => false,
                            'content' => $this->module->renderGalleryImageList(Tools::getValue('id_gallery')),
                            'message' => $this->module->l('Images successfully imported.')
                        )));
                    case 'sortGalleries':
                        $sorted_galleries = Tools::getValue('sortedGalleries');
                        if (is_array($sorted_galleries) && $sorted_galleries) {
                            $i = 1;
                            foreach ($sorted_galleries as $id_gallery) {
                                Db::getInstance()->Execute('
                                    UPDATE '._DB_PREFIX_.'higallery 
                                    SET sort='.(int)$i.'
                                    WHERE id_gallery ='.(int)$id_gallery.'
                                ');
                                $i++;
                            }

                            die(Tools::jsonEncode(array(
                                'error' => '',
                                'message' => $this->module->l('Successfully updated')
                            )));
                        }

                        die(Tools::jsonEncode(array(
                            'error' => $this->module->l('Something went wrong, please refresh the page and try again.')
                        )));
                }
            } else {
                die();
            }
        } else {
            Tools::redirectAdmin($this->module->HiPrestaClass->getModuleUrl('&'.$this->module->name.'=hisocialblock'));
        }
    }

    private function valideatSocialAccount()
    {
        if (!trim(Tools::getValue('social_title'))) {
            $this->error = $this->l('Title is required');
            return;
        }

        $access_token = trim(Tools::getValue('social_access_token'));
        $media = Tools::file_get_contents('https://graph.instagram.com/me/media?fields=id,caption,media_url,permalink&access_token='.$access_token);
        $media = Tools::jsonDecode($media);
        if(isset($media->error) && isset($media->error->message)) {
            $this->error = $this->l('We\'re unable to connect Instagarm. Error message: ').$media->error->message.': '.$this->l('Please try to generate Access Token');
            return;
        }
    }

    public function valideatFields()
    {
        $languages = Language::getLanguages(false);
        if (Tools::getValue('position') == '') {
            $this->errors['error'] = $this->l('Please select position.');
            return;
        }

        if (trim(Tools::getValue('name_'.Configuration::get('PS_LANG_DEFAULT'))) == '') {
            $this->errors['error'] = $this->l('Gallery name is required');
            return;
        }

        if (Tools::getValue('position') != 'gallery_page' && Tools::getValue('position') != 'single_gallery_page') {
            return;
        }

        if (trim(Tools::getValue('link_rewrite_'.Configuration::get('PS_LANG_DEFAULT'))) == '') {
            $this->errors['error'] = $this->l('friendly URL is required');
            return;
        }

        foreach ($languages as $lang) {
            $link_rewrite = trim(Tools::getValue('link_rewrite_'.$lang['id_lang']));
            if ($link_rewrite != '' && !Validate::isLinkRewrite($link_rewrite)) {
                $this->errors['error'] = $this->l('Invalid value for friendly URL') . ' (' . $lang['iso_code'] . ')';
                return;
            }

            $meta_title = Tools::getValue('meta_title_'.$lang['id_lang']);
            if (!Validate::isGenericName($meta_title) || Tools::strlen($meta_title) > 255) {
                $this->errors['error'] = $this->l('Meta title is not valid, max 255 characters') . ' (' . $lang['iso_code'] . ')';
                return;
            }

            $meta_description = Tools::getValue('meta_description_'.$lang['id_lang']);
            if (!Validate::isGenericName($meta_description) || Tools::strlen($meta_description) > 255) {
                $this->errors['error'] = $this->l('Meta description is not valid, max 255 characters.') . ' (' . $lang['iso_code'] . ')';
                return;
            }

            $meta_keywords = Tools::getValue('meta_keywords_'.$lang['id_lang']);
            if (!Validate::isGenericName($meta_keywords) || Tools::strlen($meta_keywords) > 255) {
                $this->errors['error'] = $this->l('Meta keywords is not valid, max 255 characters')  . ' (' . $lang['iso_code'] . ')';
                return;
            }
        }
    }

    protected function updatePosition($id_image, $id_gallery, $position)
    {
        Db::getInstance()->Execute('
            UPDATE '._DB_PREFIX_.'higallery_image 
            SET position='.(int)$position.'
            WHERE id_gallery ='.(int)($id_gallery).' AND id_image ='.(int)($id_image).'
        ');
    }
}