<?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 getCategories() {
        $collections = $this->db->query('SELECT c.*, count(p.projectID) count FROM projects_categories c LEFT JOIN projects_entry_categories p ON c.ID = p.categoryID GROUP BY c.ID ORDER BY c.collection')->result_array();
        return $collections;
    }

    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) {
        return $this->db->query('SELECT * FROM projects_categories WHERE ID IN (SELECT categoryID FROM projects_entry_categories WHERE projectID = ?)', [$id])->result_array();
    }

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

    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 mergeTranslationData($postList, $lang = 'de') {
        foreach ($postList as $i => $post) {
            $data = $this->db->query('SELECT * FROM projects_translations WHERE projectID = ? AND (lang = ? OR lang = ?) ORDER BY lang', [$post['ID'], 'de', $lang])->result_array();
            if(sizeof($data) == 1) {
                $postList[$i] = array_merge($post, $data[0]);
                continue;
            }

            $merged = [];
            foreach ($data[0] as $key => $value) {
                if(($value == NULL && $data[1][$key] == NULL) || ($value != NULL && $data[1][$key] == NULL)) {
                    $merged[$key] = $value;
                } else {
                    $merged[$key] = $data[1][$key];
                }
            }

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