<?php
header('Content-Type: application/json');

// Capture PHP errors/warnings
$errors = [];
set_error_handler(function($errno, $errstr, $errfile, $errline) use (&$errors) {
    $errors[] = [
        'level' => $errno,
        'message' => $errstr,
        'file' => $errfile,
        'line' => $errline
    ];
    return true;
});

require_once __DIR__ . '/../includes/WhatsApp.php';

// Trigger download if any fonts are missing
try {
    WhatsAppClient::generateOtpImageBase64('123');
} catch (\Throwable $e) {
    $errors[] = ['exception' => $e->getMessage()];
}

$fontDir = realpath(__DIR__ . '/../fonts');
$roboto = $fontDir ? $fontDir . '/Roboto-Bold.ttf' : '';
$lora = $fontDir ? $fontDir . '/Lora-Bold.ttf' : '';

$results = [
    'font_dir' => $fontDir,
    'roboto_path' => $roboto,
    'lora_path' => $lora,
    'roboto_exists' => file_exists($roboto),
    'lora_exists' => file_exists($lora),
    'php_errors_during_init' => $errors
];

// Reset captured errors for rendering phase
$errors = [];

$im = imagecreatetruecolor(100, 100);
$color = imagecolorallocate($im, 0, 0, 0);

function testFontDigits($im, $fontPath, $color) {
    if (!$fontPath || !file_exists($fontPath)) {
        return ['error' => 'File does not exist'];
    }
    
    $fontResults = [];
    for ($i = 0; $i <= 9; $i++) {
        $res = imagettftext($im, 12, 0, 10, 50, $color, $fontPath, (string)$i);
        if ($res === false) {
            $fontResults[$i] = 'Failed';
        } else {
            $fontResults[$i] = 'Success';
        }
    }
    return $fontResults;
}

$results['Roboto-Bold.ttf_digits'] = testFontDigits($im, $roboto, $color);
$results['Lora-Bold.ttf_digits'] = testFontDigits($im, $lora, $color);

$results['rendering_errors'] = $errors;

imagedestroy($im);

echo json_encode($results, JSON_PRETTY_PRINT);
?>