<?php declare(strict_types=1);
namespace openvk\VKAPI\Handlers;
use Chandler\Database\DatabaseConnection;
use openvk\Web\Models\Repositories\Posts as PostsRepo, Users as UsersRepo, Clubs;
use openvk\Web\Models\Entities\User;
use openvk\VKAPI\Handlers\{Wall, Users, Groups};

final class Newsfeed extends VKAPIRequestHandler
{
    function get(string $fields = "", int $start_from = 0, int $start_time = 0, int $end_time = 0, int $offset = 0, int $count = 30, int $extended = 0, int $forGodSakePleaseDoNotReportAboutMyOnlineActivity = 0)
    {
        $this->requireUser();

        if($forGodSakePleaseDoNotReportAboutMyOnlineActivity == 0)
        {
            $this->getUser()->updOnline($this->getPlatform());
        }
        
        $id    = $this->getUser()->getId();
        $subs  = DatabaseConnection::i()
                    ->getContext()
                    ->table("subscriptions")
                    ->where("follower", $id);
        $ids   = array_map(function($rel) {
            return $rel->target * ($rel->model === "openvk\Web\Models\Entities\User" ? 1 : -1);
        }, iterator_to_array($subs));
        $ids[] = $this->getUser()->getId();
        
        $posts = DatabaseConnection::i()
                    ->getContext()
                    ->table("posts")
                    ->select("id")
                    ->where("wall IN (?)", $ids)
                    ->where("deleted", 0)
                    ->where("id < (?)", empty($start_from) ? PHP_INT_MAX : $start_from)
                    ->where("? <= created", empty($start_time) ? 0 : $start_time)
                    ->where("? >= created", empty($end_time) ? PHP_INT_MAX : $end_time)
                    ->order("created DESC");

        $rposts = [];
        foreach($posts->page((int) ($offset + 1), $count) as $post)
            $rposts[] = (new PostsRepo)->get($post->id)->getPrettyId();

        $response = (new Wall)->getById(implode(',', $rposts), $extended, $fields, $this->getUser());
        $response->next_from = end(end($posts->page((int) ($offset + 1), $count))); // ну и костыли пиздец конечно)
        
        return $response;
    }

    function getGlobal(string $fields = "", int $start_from = 0, int $start_time = 0, int $end_time = 0,  int $offset = 0, int $count = 30, int $extended = 0, int $return_banned = 0)
    {
        $this->requireUser();
        
        $queryBase = "FROM `posts` LEFT JOIN `groups` ON GREATEST(`posts`.`wall`, 0) = 0 AND `groups`.`id` = ABS(`posts`.`wall`) LEFT JOIN `profiles` ON LEAST(`posts`.`wall`, 0) = 0 AND `profiles`.`id` = ABS(`posts`.`wall`)";
        $queryBase .= "WHERE (`groups`.`hide_from_global_feed` = 0 OR `groups`.`name` IS NULL) AND (`profiles`.`profile_type` = 0 OR `profiles`.`first_name` IS NULL) AND `posts`.`deleted` = 0 AND `posts`.`suggested` = 0";

        if($this->getUser()->getNsfwTolerance() === User::NSFW_INTOLERANT)
            $queryBase .= " AND `nsfw` = 0";
        
        if(($ignoredCount = $this->getUser()->getIgnoredSourcesCount()) > 0 && $return_banned == 0) {
            $sources = implode("', '", $this->getUser()->getIgnoredSources(1, $ignoredCount, true));
            
            $queryBase .= " AND `posts`.`wall` NOT IN ('$sources')";
        }

        $start_from = empty($start_from) ? PHP_INT_MAX : $start_from;
        $start_time = empty($start_time) ? 0 : $start_time;
        $end_time = empty($end_time) ? PHP_INT_MAX : $end_time;
        $posts = DatabaseConnection::i()->getConnection()->query("SELECT `posts`.`id` " . $queryBase . " AND `posts`.`id` <= " . $start_from . " AND " . $start_time . " <= `posts`.`created` AND `posts`.`created` <= " . $end_time . " ORDER BY `created` DESC LIMIT " . $count . " OFFSET " . $offset);

        $rposts = [];
        $ids = [];
        foreach($posts as $post) {
            $rposts[] = (new PostsRepo)->get($post->id)->getPrettyId();
            $ids[] = $post->id;
        }

        $response = (new Wall)->getById(implode(',', $rposts), $extended, $fields, $this->getUser());
        $response->next_from = end($ids);
        
        return $response;
    }

    function getBanned(int $extended = 0, string $fields = "", string $name_case = "nom")
    {
        $this->requireUser();

        $count = 50;
        $offset = 0;

        $banned = array_slice($this->getUser()->getIgnoredSources(1, $count + $offset, true), $offset);

        if($extended == 0) {
            $retArr/*d*/ = [
                "groups"  => [],
                "members" => [] # why
            ];

            foreach($banned as $ban) {
                if($ban > 0) {
                    $retArr["members"][] = $ban;
                } else {
                    $retArr["groups"][] = $ban;
                }
            }

            return $retArr;
        } else {
            $retArr = [
                "groups"   => [],
                "profiles" => []
            ];

            $usIds = "";
            $clubIds = "";

            foreach($banned as $ban) {
                if($ban > 0) {
                    $usIds .= $ban . ",";
                } else {
                    $clubIds .= ($ban * -1) . ",";
                }
            }

            $retArr["profiles"][] = (new Users)->get($usIds, $fields);
            $retArr["groups"][]   = (new Groups)->getById($clubIds, $fields);

            return $retArr;
        }
    }

    function addBan(string $user_ids = "", string $group_ids = "")
    {
        $this->requireUser();
        $this->willExecuteWriteAction();

        if(empty($user_ids) && empty($group_ids))
            $this->fail(52, "Provide 'user_ids' or 'groups_ids'");

        $arr = [];

        if(!empty($user_ids)) {
            $arr = array_merge($arr, array_map(function($el) {
                return (int)$el;
            }, explode(",", $user_ids)));
        } 
        
        if(!empty($group_ids)) {
            $arr = array_merge($arr, array_map(function($el) {
                return abs((int)$el) * -1;
            }, explode(",", $group_ids)));
        }

        $arr = array_unique($arr);
        if(sizeof($arr) > 10 || sizeof($arr) < 1)
            $this->fail(20, "You can ignore only 10 users/groups at once");
        
        $successes = 0;
        foreach($arr as $ar) {
            $entity = getEntity($ar);

            if(!$entity || $entity->isHideFromGlobalFeedEnabled() || $entity->isIgnoredBy($this->getUser())) continue;
        
            $entity->toggleIgnore($this->getUser());
            $successes += 1;
        }

        return (int)($successes > 0);
    }

    function deleteBan(string $user_ids = "", string $group_ids = "")
    {
        $this->requireUser();
        $this->willExecuteWriteAction();

        if(empty($user_ids) && empty($group_ids))
            $this->fail(52, "Provide 'user_ids' or 'groups_ids'");

        $arr = [];

        if(!empty($user_ids)) {
            $arr = array_merge($arr, array_map(function($el) {
                return (int)$el;
            }, explode(",", $user_ids)));
        } 
        
        if(!empty($group_ids)) {
            $arr = array_merge($arr, array_map(function($el) {
                return abs((int)$el) * -1;
            }, explode(",", $group_ids)));
        }

        $arr = array_unique($arr);
        if(sizeof($arr) > 10 || sizeof($arr) < 1)
            $this->fail(20, "You can unignore only 10 users/groups at once");
        
        $successes = 0;
        foreach($arr as $ar) {
            $entity = getEntity($ar);

            if(!$entity || $entity->isHideFromGlobalFeedEnabled() || !$entity->isIgnoredBy($this->getUser())) continue;
        
            $entity->toggleIgnore($this->getUser());
            $successes += 1;
        }

        return (int)($successes > 0);
    }
}