<?php
session_start();
ini_set('memory_limit', '512M');
set_time_limit(0);
ini_set('display_errors', 1);
ini_set('log_errors', 1);
ini_set('error_log', __DIR__ . '/logs/php_errors.log');
error_reporting(E_ALL);
header('Content-Type: text/plain');
header('Cache-Control: no-cache');
header('Access-Control-Allow-Origin: *');
$message =[];
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
echo json_encode(["error" => "Método inválido"]);
exit;
}
$userMessage = $_POST['userMessage'] ?? '';
$selectedModel = $_POST['modelSelect'] ?? 'gemma-3-4b-it:2';
$streamEnabled = $_POST['streamToggle'] === 'true' ? true : false;
$useOllama = $_POST['ollamaToggle'] === 'true' ? true : false;
$apiUrl = $useOllama ? "http://localhost:11434/api/generate" : "http://127.0.0.1:1234/v1/chat/completions";
$message = [];
$imageBase64 = null;
if (isset($_FILES['image']) && $_FILES['image']['error'] === UPLOAD_ERR_OK) {
$imageData = file_get_contents($_FILES['image']['tmp_name']);
$imageBase64 = base64_encode($imageData);
}
if ($useOllama) {
$message = [
"model" => $selectedModel,
"prompt" => $userMessage,
"stream" => $streamEnabled,
];
if ($imageBase64) {
$message['images'] = [$imageBase64];
}
} else {
$message = [
"model" => $selectedModel,
"messages" => [
[ "role" => "system", "content" => "Você é uma inteligência artificial que responde qualquer pergunta com base no seu conhecimento." ],
[ "role" => "user", "content" => $userMessage ]
],
"temperature" => 0.7,
"max_tokens" => -1,
"stream" => $streamEnabled
];
if ($imageBase64) {
$message['messages'][1]['content'] = [
["type" => "text", "text" => $userMessage],
["type" => "image_url", "image_url" => [
"url" => "data:image/jpeg;base64," . $imageBase64
]]
];
}
}
if (!$userMessage) {
echo json_encode(["error" => "Mensagem inválida"]);
exit;
}
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => $apiUrl ,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 120,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS => json_encode($message),
CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
CURLOPT_WRITEFUNCTION => function ($ch, $chunk) use ($useOllama) {
if ($useOllama && $chunk !== "\n") {
$data = json_decode($chunk, true);
if (isset($data['response'])) {
echo $data['response'];
}
if (isset($data['done']) && $data['done'] === true) {
}
} elseif (!$useOllama && strpos($chunk, 'data: ') === 0) {
$data = json_decode(substr($chunk, 6), true);
if (isset($data['choices'][0]['delta']['content'])) {
echo $data['choices'][0]['delta']['content'];
}
if (isset($data['choices'][0]['finish_reason']) && $data['choices'][0]['finish_reason'] !== null) {
}
} else {
echo $chunk;
}
ob_flush();
flush();
return strlen($chunk);
},
]);
curl_exec($curl);
if (curl_errno($curl)) {
echo json_encode(["error" => curl_error($curl)]);
}
curl_close($curl);
exit;
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