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<?php
include_once '../src/message_picture.php';
if (!isset($_GET['message_id'], $_GET['channel_login'])) {
http_response_code(400);
exit('message_id and channel_login must be set in query string!');
}
$message_id = $_GET['message_id'];
$channel_login = $_GET['channel_login'];
// obtaining user data and message
$request = curl_init();
curl_setopt($request, CURLOPT_URL, "https://recent-messages.robotty.de/api/v2/recent-messages/{$channel_login}?hide_moderation_messages=true&clearchat_to_notice=true");
curl_setopt($request, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($request);
if (curl_errno($request)) {
echo 'cURL Error: ' . curl_error($request);
}
curl_close($request);
$recent_messages = json_decode($response, true);
if (isset($recent_messages['error'])) {
http_response_code(400);
exit("Failed to retrieve messages from recent-messages API: {$recent_messages["error"]}");
}
// searching the message
$username = "";
$message = "";
$timestamp = 0;
foreach ($recent_messages['messages'] as $m) {
$parts = explode(' ', $m);
// searching message by id
$flags = $parts[0];
if (str_starts_with($flags, '@')) {
$flags = substr($flags, 1);
}
$flags = explode(';', $flags);
$found = false;
foreach ($flags as $f) {
$ff = explode('=', $f);
if ($ff[0] == 'id' && $ff[1] == $message_id) {
$found = true;
} else if ($ff[0] == 'tmi-sent-ts') {
$timestamp = intval($ff[1]);
}
}
if (!$found) {
continue;
}
$username = explode('!', $parts[1]);
$username = substr($username[0], 1);
array_splice($parts, 0, 4);
$message = implode(' ', $parts);
if (str_starts_with($message, ':')) {
$message = substr($message, 1);
}
break;
}
if (empty($username) || empty($message)) {
http_response_code(404);
exit("Message ID {$message_id} not found");
}
// getting user pfp
$request = curl_init();
curl_setopt($request, CURLOPT_URL, "https://api.ivr.fi/v2/twitch/user?login={$username}");
curl_setopt($request, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($request);
curl_close($request);
$user = json_decode($response, true);
if (isset($user['error'])) {
http_response_code(400);
$m = $user['error']['message'] ?? "unknown";
exit("Failed to retrieve a user from IVR API: {$m}");
}
if (empty($user)) {
http_response_code(404);
exit("User {$username} doesn't exist in IVR API");
}
$old_pfp = imagecreatefromstring(file_get_contents($user[0]['logo']));
$oldw = imagesx($old_pfp);
$oldh = imagesy($old_pfp);
$pfp = imagecreatetruecolor(72, 72);
imagecopyresampled($pfp, $old_pfp, 0, 0, 0, 0, 72, 72, $oldw, $oldh);
$screenshot = generate_message_screenshot(
$pfp,
$username,
$channel_login,
$message,
$timestamp / 1000
);
imagedestroy($pfp);
imagedestroy($old_pfp);
if (isset($_GET['base64'])) {
ob_start();
imagejpeg($screenshot);
$image_data = ob_get_contents();
ob_end_clean();
$image_data = base64_encode($image_data);
echo "data:image/jpeg;base64,{$image_data}";
} else {
header('Content-Type: image/jpeg');
header("Content-Disposition: inline; filename*=UTF-8''message-{$username}-{$message_id}-{$channel_login}.jpg");
imagejpeg($screenshot);
}
imagedestroy($screenshot);
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