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

    class UserModel extends CI_Model
    {

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

        function getUser($username)
        {
            $result = $this->db->query('SELECT ID, username, displayname, email, rank, profile_picture, header_image, about, social_networks, showAds, date_created, gender, language, country, birthdate, birthyear, receiveEmails, receiveNewsletter FROM users WHERE username = ? AND is_activated = TRUE LIMIT 1', [$username])->result_array();
            if (empty($result)) {
                return null;
            }
            $result = $this->setDefaultImages($result);
            $result = $this->setRankname($result);
            return $result;
        }

        public function setDefaultImages($userList)
        {
            for ($i = 0; $i < sizeof($userList); $i++) {
                if ((isset($userList[$i]['header_image']) && ($userList[$i]['header_image'] == '' || $userList[$i]['header_image'] == NULL)) || !isset($userList[$i]['header_image'])) {
                    $userList[$i]['header_image'] = substr(base_url(), 0, base_url() - 1) . ':3000/' . $userList[$i]['displayname'];
                }
                if (isset($userList[$i]['profile_picture']) && $userList[$i]['profile_picture'] == '') {
                    $userList[$i]['profile_picture'] = base_url('/f/8d204712d8132b36d765640ce775ce15');
                }
            }
            return $userList;
        }

        public function setRankname($userList)
        {
            for ($i = 0; $i < sizeof($userList); $i++) {
                if (isset($userList[$i]['rank'])) {
                    $userList[$i]['rankName'] = $this->GeneralModel->getRankName($userList[$i]['rank']);
                }
            }
            return $userList;
        }

        public function getUserIDByUsername($username)
        {
            $result = $this->db->query('SELECT ID FROM users WHERE username = ?', [$username])->result_array();
            return $result;
        }

        public function mergeFollowerCount($users) {
            foreach ($users as $i => $user) {
                $this->db->cache_off();
                $followerCount = $this->db->query('SELECT count(*) followerCount FROM user_followers WHERE followedUserID = ?', [$user['ID']])->result_array();
                $this->db->cache_on();
                $users[$i]['followerCount'] = $followerCount[0]['followerCount'];
            }
            return $users;
        }

        public function getFollowers($id)
        {
            $this->db->cache_off();
            $followers = $this->db->query('SELECT ID, followedSince, username, displayname, profile_picture, header_image FROM user_followers LEFT JOIN users ON ID = followerUserID WHERE followedUserID = ? ORDER BY followedSince DESC', [$id])->result_array();
            $this->db->cache_on();
            $followers = $this->setDefaultImages($followers);
            $followers = $this->mergeFollowerCount($followers);
            return $followers;
        }

        function getUserByID($id)
        {
            $result = $this->db->query('SELECT ID, original_name, username, displayname, email, rank, profile_picture, header_image, is_activated, about, lastLogin, social_networks, showAds, date_created, gender, language, country, birthdate, birthyear, receiveEmails, receiveNewsletter FROM users WHERE ID = ? AND is_activated = TRUE LIMIT 1', [$id])->result_array();
            if (empty($result)) {
                return null;
            }
            $result = $this->setDefaultImages($result);
            $result = $this->setRankname($result);
            return $result;
        }

        public function getFollowing($id)
        {
            $this->db->cache_off();
            $following = $this->db->query('SELECT ID, followedSince, username, displayname, profile_picture, header_image FROM user_followers LEFT JOIN users ON ID = followedUserID WHERE followerUserID = ? ORDER BY followedSince DESC', [$id])->result_array();
            $this->db->cache_on();
            $following = $this->setDefaultImages($following);
            $following = $this->mergeFollowerCount($following);
            return $following;
        }

        function getUserComments($id, $count, $offset)
        {
            $comments = $this->db->query('SELECT *, p.postUrl FROM blog_comments c LEFT JOIN blog_posts p ON p.postID = c.post_id WHERE user_id = ? ORDER BY date_created DESC LIMIT ? OFFSET ?', [$id, $count, $offset])->result_array();
            $comments = $this->BlogModel->mergePostTitleDesc($comments);
            return $comments;
        }

        function getUserBlogPosts($id, $count, $offset)
        {
            $posts = $this->db->query('SELECT * FROM blog_posts WHERE postIsDeleted = FALSE AND postState = 1 AND postAuthorID = ? ORDER BY postPublishDate DESC LIMIT ? OFFSET ?', [$id, $count, $offset])->result_array();
            $posts = $this->BlogModel->mergePostTitleDesc($posts);
            return $posts;
        }


        function getUserStats($userID)
        {
            $result = [];
            $this->db->cache_off();
            $user = $this->db->query('SELECT
  COUNT(*)                   postCount,
  (SELECT COUNT(*)
   FROM user_followers
   WHERE followedUserID = ?) followerCount,
  (SELECT COUNT(*)
   FROM user_followers
   WHERE followerUserID = ?) followedCount
FROM user_posts
WHERE user_id = ?', [$userID, $userID, $userID])->result_array()[0];
            $result['postCount'] = $user['postCount'];
            $result['followerCount'] = $user['followerCount'];
            $result['followedCount'] = $user['followedCount'];
            $blogResults = $this->db->query('SELECT COUNT(*) blogCount, (SELECT COUNT(*) FROM blog_comments WHERE user_id = ?) commentCount FROM blog_posts WHERE postIsDeleted = FALSE AND postState = 1 AND postAuthorID = ?', [$userID, $userID])->result_array()[0];
            $result['blogCount'] = $blogResults['blogCount'];
            $result['commentCount'] = $blogResults['commentCount'];
            $this->db->cache_on();
            return $result;
        }

        function isFollowing($followerID, $followingID)
        {
            $this->db->cache_off();
            $response = $this->db->query('SELECT followedUserID FROM user_followers WHERE followerUserID = ? AND followedUserID = ?', [$followerID, $followingID])->result_array();
            $this->db->cache_off();
            return !empty($response);
        }

        function unfollow($followerID, $followedID)
        {
            $this->db->query('DELETE FROM user_followers WHERE followerUserID = ? AND followedUserID = ?', [$followerID, $followedID]);

            // Remove notification
            $this->NotificationModel->removeNotification($followerID, $followedID, $followedID, 'users.newFollower');
        }

        function follow($followerID, $followedID)
        {
            $this->db->query('INSERT INTO user_followers (followerUserID, followedUserID) VALUES (?, ?)', [$followerID, $followedID]);

            // Send notification to followed user
            $this->NotificationModel->userNotificationNewFollower($followerID, $followedID);
        }

        function updateProfile($data, $id)
        {
            $this->db->where('ID', $id);
            $this->db->update('users', $data);
        }

        function insertIntoHistory($data)
        {
            unset($data['date_created']);
            $this->db->insert('users_history', $data);
        }

        function getUserList($amount, $offset)
        {
            $data = $this->db->query('SELECT ID, username, displayname, rank, profile_picture, header_image, is_activated, showAds, receiveEmails, receiveNewsletter, date_created, isCurrentlyOnline, lastLogin, login_method, language, country, gender FROM users LIMIT ? OFFSET ?', [$amount, $offset])->result_array();
            $data = $this->setDefaultImages($data);
            $data = $this->setRankname($data);
            return $data;
        }

        public function updateOnline($id)
        {
            $this->db->query('UPDATE users SET isCurrentlyOnline = 1, lastOnlineUpdate = NOW() WHERE ID = ? LIMIT 1', [$id]);
        }

        function getActiveUsers($count)
        {
            $data = $this->db->query('SELECT username, displayname, profile_picture, lastLogin, (SELECT COUNT(*) FROM user_followers WHERE followedUserID = users.ID) follower_count FROM users WHERE isCurrentlyOnline = TRUE ORDER BY lastLogin DESC LIMIT ?', [$count])->result_array();
            $data = $this->setDefaultImages($data);
            return $data;
        }

        public function getNewestUsers($count)
        {
            $data = $this->db->query('SELECT username, displayname, profile_picture, date_created, (SELECT COUNT(*) FROM user_followers WHERE followedUserID = users.ID) follower_count FROM users ORDER BY date_created DESC LIMIT ?', [$count])->result_array();
            $data = $this->setDefaultImages($data);
            return $data;
        }

        public function searchUsers($query, $rank = '', $region = '', $lang = '', $amount = 3, $offset = 0) {
            $conditions = [];
            $inputs = [];
            if($query !== '') {
                $conditions[] = 'username RLIKE ?';
                $inputs[] = $query;
            }
            if($rank !== '') {
                $conditions[] = 'rank = ?';
                $inputs[] = $rank;
            }
            if($region !== '') {
                $conditions[] = 'country = ?';
                $inputs[] = $region;
            }
            if($lang !== '') {
                $conditions[] = 'language = ?';
                $inputs[] = $lang;
            }

            $dbClause = join(' AND ', $conditions);
            $inputs[] = $amount;
            $inputs[] = $offset;
            $data = $this->db->query('SELECT username, displayname, profile_picture, header_image, about, rank FROM users WHERE ' . $dbClause . ' LIMIT ? OFFSET ?', $inputs)->result_array();

            $data = $this->setDefaultImages($data);
            $data = $this->setRankname($data);

            return $data;
        }

        public function getAvailableCountries() {
            return $this->db->query('SELECT country, count(*) countryUserCount FROM users WHERE country IS NOT NULL AND country != "" GROUP BY country ORDER BY country')->result_array();
        }

        public function getAvailableLanguages() {
            return $this->db->query('SELECT language, count(*) langUserCount FROM users GROUP BY language ORDER BY language')->result_array();
        }

    }