#!/usr/bin/env php
<?php

/**
 * jQuery Infinite With Template - Demo Data Generator
 *
 * @example ./generate > data_sources.json
 * @description Generates random demo data for testing infinite scroll
 */

// Enable error reporting for debugging
error_reporting(E_ALL);
ini_set('display_errors', 0);

// Set JSON header
header('Content-Type: application/json');

// Get query parameter (default to 'None' if not provided)
$query = isset($_GET['word']) ? $_GET['word'] : 'None';

// Generate response
$response = [
    'data' => [],
    'page' => isset($_GET['page']) ? (int)$_GET['page'] : 1,
    'total' => 100 // Simulate total count
];

// Generate 20 items per page
$itemsPerPage = 30;
for ($i = 0; $i < $itemsPerPage; $i++) {
    $response['data'][] = generateItem($query, $response['page'], $i);
}

// Output JSON
echo json_encode($response, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);

/**
 * Generate a single fake item
 *
 * @param string $query Search query
 * @param int $page Current page number
 * @param int $index Item index within page
 * @return array Generated item
 */
function generateItem($query, $page, $index)
{
    static $usedIds = [];

    // Generate unique ID
    do {
        $id = rand(1, 10000);
    } while (in_array($id, $usedIds));

    $usedIds[] = $id;

    return [
        'id' => $id,
        'title' => generateRandomString(30) . "(word=$query, page=$page)",
        'page' => $page,
        'index' => $index
    ];
}

/**
 * Generate random string of specified length
 *
 * @param int $length String length
 * @return string Random string
 */
function generateRandomString($length = 10)
{
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString = '';

    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }

    return $randomString;
}