<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
$action = $_GET['action'] ?? $_POST['action'] ?? 'status';
if ($action === 'status') {
    echo json_encode([
        'ok'=>true,'service'=>'LTX-Video','provider'=>'Lightricks',
        'gpu_required'=>true, 'local_gpu'=>false,
        'alternatives'=>[
            ['name'=>'HF Spaces','url'=>'https://huggingface.co/spaces/Lightricks/LTX-Video','cost'=>'free'],
            ['name'=>'Colab','url'=>'https://colab.research.google.com','cost'=>'free GPU'],
            ['name'=>'Replicate','url'=>'https://replicate.com/lightricks/ltx-video','cost'=>'$0.03/video'],
        ],
        'model'=>'ltx-video-2b-v0.9.5',
    ]);
} elseif ($action === 'generate') {
    $p = $_POST['prompt'] ?? '';
    echo json_encode([
        'ok'=>false,'gpu_required'=>true,
        'use_hf_spaces'=>'https://huggingface.co/spaces/Lightricks/LTX-Video?prompt='.urlencode($p),
        'message'=>"Ouvrez HF Spaces pour generer la video (GPU gratuit)"
    ]);
}