<?php

$servername = "arukus-db-8.ca0xxskptwru.ap-south-1.rds.amazonaws.com";
$username   = "db_usr_gyaniguru_book";
$password   = "fuTg3xG193HAmqAFVjl6UQMr";
$dbname     = "gyaniguru_org_prod_book";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$conn->set_charset("utf8mb4");

/**
 * Create table if not exists
 */
$table_sql = "CREATE TABLE IF NOT EXISTS `book_images` (
    `id` INT(11) NOT NULL AUTO_INCREMENT,
    `book_id` INT(11) NOT NULL,
    `image_url` VARCHAR(255) NOT NULL,
    `sort_order` INT(11) DEFAULT 0,
    PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;";

$conn->query($table_sql);

$reviews_sql = "CREATE TABLE IF NOT EXISTS `reviews` (
    `id` INT(11) NOT NULL AUTO_INCREMENT,
    `book_id` INT(11) NOT NULL,
    `user_id` INT(11) NOT NULL,
    `rating` TINYINT(4) NOT NULL CHECK (`rating` >= 1 AND `rating` <= 5),
    `title` VARCHAR(255) DEFAULT NULL,
    `comment` TEXT NOT NULL,
    `status` ENUM('pending','approved') DEFAULT 'approved',
    `created_at` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    PRIMARY KEY (`id`),
    KEY `book_id` (`book_id`),
    KEY `user_id` (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;";

$conn->query($reviews_sql);

try {

    $result = $conn->query("SHOW COLUMNS FROM users LIKE 'reset_token'");

    if ($result->num_rows == 0) {
        $conn->query("
            ALTER TABLE users
            ADD COLUMN reset_token VARCHAR(64) DEFAULT NULL
        ");
    }

} catch (Exception $e) {
    error_log($e->getMessage());
}
/**
 * Run SQL query
 */
function query($sql, $params = [])
{
    global $conn;

    $stmt = $conn->prepare($sql);

    if (!$stmt) {
        die("SQL Prepare Failed: " . $conn->error);
    }

    if (!empty($params)) {

        $types = '';

        foreach ($params as $param) {
            if (is_int($param)) {
                $types .= 'i';
            } elseif (is_float($param)) {
                $types .= 'd';
            } else {
                $types .= 's';
            }
        }

        $stmt->bind_param($types, ...$params);
    }

    if (!$stmt->execute()) {
        die("SQL Execute Failed: " . $stmt->error);
    }

    if ($stmt->field_count > 0) {
        return $stmt->get_result();
    }

    return true;
}

/**
 * Get single row
 */
function get_row($sql, $params = [])
{
    $result = query($sql, $params);

    return $result ? $result->fetch_assoc() : null;
}

/**
 * Get all rows
 */
function get_all($sql, $params = [])
{
    $result = query($sql, $params);

    return $result ? $result->fetch_all(MYSQLI_ASSOC) : [];
}