<?php

namespace Controllers;

class Search
{
    public function show($keyword, $page = '1')
    {
        $db = db();
        $keyword = urldecode($keyword);
        $offset = ($page >= 1) ? ($page - 1) : 0;
        $offset *= 10;
        $sql = 'SELECT * FROM posts WHERE title LIKE ? ' .
               'ORDER BY create_at DESC LIMIT ?,10';
        $query = $db->prepare($sql);
        $query->bindValue(1, '%' . preg_quote($keyword) . '%');
        $query->bindValue(2, $offset, \PDO::PARAM_INT);
        $query->execute();
        $posts = $query->fetchAll(\PDO::FETCH_CLASS, 'Core\\Record');
        $offset += 10;
        $query->bindValue(2, $offset, \PDO::PARAM_INT);
        $query->execute();
        $next = $query->fetchAll(\PDO::FETCH_CLASS, 'Core\\Record');
        $sql = 'SELECT id, keyword, COUNT(id) AS num_of_posts FROM (' .
               'tags JOIN post_tag ON id=tag_id) GROUP BY id ORDER BY keyword';
        $query = $db->prepare($sql);
        $query->execute();
        $tags = $query->fetchAll(\PDO::FETCH_CLASS, 'Core\\Record');
        $is_last = count($next) == 0 ? true : false;
        return view('post.index', [
            'keyword' => $keyword,
            'posts' => $posts,
            'tags' => $tags,
            'page' => $page,
            'is_last' => $is_last,
            'pager_uri' => preg_replace('/\/\d+$/', '', $_SERVER['REQUEST_URI'])
        ]);
    }
}