<?php
    defined('BASEPATH') OR exit('No direct script access allowed');

    class ProjectsModel extends CI_Model
    {

        public function __construct()
        {
            parent::__construct();
            $this->load->model('projectsModel', '', TRUE);
        }

        public function getEntries($category)
        {
            if ($category !== 'all') {
                $content = $this->db->query('SELECT *, (SELECT (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = p.ID AND type = 1) - (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = p.ID AND type = -1)) voteCount FROM projects p WHERE ID IN (SELECT projectID FROM projects_entry_categories WHERE categoryID = ?) ORDER BY datetime DESC', [$category])->result_array();
            } else {
                $content = $this->db->query('SELECT *, (SELECT (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = p.ID AND type = 1) - (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = p.ID AND type = -1)) voteCount FROM projects p ORDER BY datetime DESC')->result_array();
            }

            $content = $this->mergeTranslationData($content, $_SESSION['site_lang']);

            return $content;
        }

        public function mergeTranslationData($postList, $lang = 'de')
        {
            foreach ($postList as $i => $post) {
                $data = $this->db->query('SELECT title, description, content, downloadName, openSourceName, customLinkName FROM projects_translations WHERE projectID = ? AND lang = ? ORDER BY lang', [$post['ID'], 'de'])->result_array();

                if(empty($data)) {
                    $postList[$i] = array_merge($post, [
                        'title' => 'Not found',
                        'description' => 'Not found',
                        'content' => 'Not found',
                    ]);
                    continue;
                }

                $data = $data[0];
                if($lang == 'de') {
                    $postList[$i] = array_merge($post, $data);
                    continue;
                }

                $dataLang = $this->db->query('SELECT title, description, content, downloadName, openSourceName, customLinkName FROM projects_translations WHERE projectID = ? AND lang = ? ORDER BY lang', [$post['ID'], $lang])->result_array();

                if (empty($dataLang)) {
                    $postList[$i] = array_merge($post, $data);
                    continue;
                }

                $dataLang = $dataLang[0];

                $merged = [];
                foreach ($data as $key => $value) {
                    if (($value == NULL && $dataLang[$key] == NULL) || ($value != NULL && $dataLang[$key] == NULL)) {
                        $merged[$key] = $value;
                    } else {
                        $merged[$key] = $dataLang[$key];
                    }
                }

                $postList[$i] = array_merge($post, $merged);
            }
            return $postList;
        }

        public function getCategories()
        {
            $collections = $this->db->query('SELECT c.*, count(p.projectID) count FROM projects_categories c LEFT JOIN projects_entry_categories p ON c.categoryID = p.categoryID GROUP BY c.categoryID ORDER BY c.name')->result_array();

            if($_SESSION['site_lang'] !== 'de') {
                $collectionsLang = $this->db->query('SELECT categoryID, name, displayname FROM projects_categories WHERE lang = ?', [$_SESSION['site_lang']])->result_array();

                $categoryIDs = array_column($collections, 'categoryID');
                foreach ($collectionsLang as $item) {
                    $key = array_search($item['categoryID'], $categoryIDs);
                    $collections[$key] = array_merge($collections[$key], $item);
                }
            }

            return $collections;
        }

        public function getCategoriesRaw() {
            $categories = $this->db->query('SELECT ID, GROUP_CONCAT(c.name) name, GROUP_CONCAT(c.displayname) displayname, (SELECT COUNT(*) FROM projects_entry_categories p WHERE c.categoryID = p.categoryID) count
              FROM projects_categories c
              GROUP BY c.categoryID
              ORDER BY ID')->result_array();
            return $categories;
        }

        public function editEntry($data, $id)
        {
            $this->db->update('projects', $data, ['id' => $id]);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('admin', 'projects');
        }

        public function addEntry($data)
        {
            $this->db->insert('projects', $data);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('admin', 'projects');
        }

        public function delete($id)
        {
            $this->db->query('DELETE FROM projects WHERE ID = ? LIMIT 1', [$id]);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('admin', 'projects');
        }

        public function deleteCategory($id)
        {
            $this->db->query('DELETE FROM projects_entry_categories WHERE categoryID = ?', [$id]);
            $this->db->query('DELETE FROM projects_categories WHERE ID = ? LIMIT 1', [$id]);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('admin', 'projects');
        }

        public function checkIfExists($id)
        {
            $result = $this->db->query('SELECT ID FROM projects WHERE ID = ? LIMIT 1', [$id])->result_array();
            if (!empty($result)) {
                return true;
            } else {
                return false;
            }
        }

        public function checkIfNameExists($name)
        {
            $result = $this->db->query('SELECT ID FROM projects WHERE name = ? LIMIT 1', [$name])->result_array();
            if (!empty($result)) {
                return true;
            } else {
                return false;
            }
        }

        public function getEntry($id)
        {
            return $this->db->query('SELECT * FROM projects WHERE ID = ? LIMIT 1', [$id])->result_array();
        }

        public function getEntryByName($name, $lang = 'de')
        {
            $result = $this->db->query('SELECT * FROM projects WHERE name = ? LIMIT 1', [$name])->result_array();

            $result = $this->mergeTranslationData($result, $lang);

            return !empty($result) ? $result[0] : null;
        }

        public function getEntryCategories($id)
        {
            $categories = $this->db->query('SELECT * FROM projects_categories WHERE ID IN (SELECT categoryID FROM projects_entry_categories WHERE projectID = ?) AND lang = "de"', [$id])->result_array();

            if($_SESSION['site_lang'] != 'de') {
                $categoriesLang = $this->db->query('SELECT categoryID, name, displayname FROM projects_categories WHERE lang = ?', [$_SESSION['site_lang']])->result_array();

                $categoryIDs = array_column($categories, 'categoryID');
                foreach ($categoriesLang as $item) {
                    $key = array_search($item['categoryID'], $categoryIDs);
                    $categories[$key] = array_merge($categories[$key], $item);
                }
            }

            return $categories;
        }

        public function updateCategories($postID, $categories)
        {
            $this->resetEntryCategories($postID);
            foreach ($categories as $category) {
                $this->addCategoryToEntryID($postID, $category);
            }
        }

        public function resetEntryCategories($postID)
        {
            $this->db->query('DELETE FROM projects_entry_categories WHERE projectID = ?', $postID);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('admin', 'projects');
        }

        public function addCategoryToEntryID($postID, $categoryID)
        {
            $this->db->query('INSERT INTO projects_entry_categories (projectID, categoryID) VALUES (?, ?)', [$postID, $categoryID]);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('admin', 'projects');
        }

        public function addCategoryToEntryName($name, $categoryID)
        {
            $id = $this->db->query('SELECT ID FROM projects WHERE name = ? LIMIT 1', [$name])->result_array()[0];
            $this->addCategoryToEntryID(intval($id['ID']), $categoryID);
        }

        public function getPrevProject($id)
        {
            $result = $this->db->query('SELECT * FROM projects WHERE datetime < (SELECT datetime FROM projects WHERE ID = ?) ORDER BY datetime DESC LIMIT 1', [$id])->result_array();

            $result = $this->mergeTranslationData($result, $_SESSION['site_lang']);

            return $result;
        }

        public function getNextProject($id)
        {
            $result = $this->db->query('SELECT * FROM projects WHERE datetime > (SELECT datetime FROM projects WHERE ID = ?) ORDER BY datetime ASC LIMIT 1', [$id])->result_array();

            $result = $this->mergeTranslationData($result, $_SESSION['site_lang']);

            return $result;
        }

        public function addVote($projectID, $userID, $voteType)
        {
            $this->db->query('DELETE FROM projects_entry_votes WHERE projectID = ? AND userID = ?', [$projectID, $userID]);
            $this->db->query('INSERT INTO projects_entry_votes (projectID, userID, type) VALUES (?, ?, ?)', [$projectID, $userID, $voteType]);
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
            $this->db->cache_delete('projects', 'addVote');
            $this->db->cache_delete('admin', 'projects');
        }

        public function getVoteCount($projectID)
        {
            $result = $this->db->query('SELECT (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = ? AND type = 1) - (SELECT COUNT(*) FROM projects_entry_votes WHERE projectID = ? AND type = -1) voteCount', [$projectID, $projectID])->result_array();
            return $result[0]['voteCount'];
        }

        public function getUserVoteType($projectID, $userID)
        {
            $result = $this->db->query('SELECT type FROM projects_entry_votes WHERE projectID = ? AND userID = ?', [$projectID, $userID])->result_array();
            if (empty($result))
                return 0;
            return $result[0]['type'];
        }

        public function createNewProjectDraft()
        {
            $this->db->query('INSERT INTO projects () VALUES ()');

            $this->db->cache_delete('admin', 'projects');

            $data = $this->db->query('SELECT ID FROM projects ORDER BY ID DESC LIMIT 1')->result_array();
            return $data[0]['ID'];
        }

        public function updateProject($id, $translations, $url, $download, $openSource, $customLink, $date, $image)
        {
            $this->db->query('UPDATE projects SET name = ?, isDownloadable = ?, downloadLink = ?, isOpenSource = ?, openSourceLink = ?, customLink = ?, datetime = ?, source = ? WHERE ID = ?', [$url, $download['available'], $download['link'], $openSource['available'], $openSource['link'], $customLink['link'], $date, $image, $id]);

            $this->db->cache_off();
            foreach ($translations as $lang => $translation) {
                $data = $this->db->query('SELECT translationID FROM projects_translations WHERE projectID = ? AND lang = ?', [$id, $lang])->result_array();

                if (empty($data)) {
                    $this->db->query('INSERT INTO projects_translations (projectID, lang) VALUES (?, ?)', [$id, $lang]);

                    $data = $this->db->query('SELECT translationID FROM projects_translations WHERE projectID = ? AND lang = ?', [$id, $lang])->result_array();
                }

                $translationID = $data[0]['translationID'];

                $this->db->query('UPDATE projects_translations SET title = ?, description = ?, content = ?, downloadName = ?, openSourceName = ?, customLinkName = ? WHERE translationID = ?', array_merge($translation, [$download['name'], $openSource['name'], $customLink['name'], $translationID]));
            }
            $this->db->cache_on();

            $this->db->cache_delete('admin', 'projects');
            $this->db->cache_delete('projects', 'index');
            $this->db->cache_delete('projects', 'entry');
        }

        public function mergeFullTranslationData($postList)
        {
            foreach ($postList as $i => $post) {
                $data = $this->db->query('SELECT * FROM projects_translations WHERE projectID = ? ORDER BY lang', [$post['ID']])->result_array();
                foreach ($data as $lang) {
                    $postList[$i]['translations'][$lang['lang']] = $lang;
                }
            }
            return $postList;
        }
    }