<?php
// WEVIA Chat v3 — Sovereign Direct (fast, no Redis dependency)
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: Content-Type');
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { http_response_code(200); exit; }

$input = json_decode(file_get_contents('php://input'), true);
$msg = trim($input['message'] ?? $input['msg'] ?? '');
if (!$msg) { echo json_encode(['response' => 'Message vide', 'provider' => 'error']); exit; }

// Call sovereign-api:4000 directly (12 providers, 0 EUR)
$ch = curl_init('http://127.0.0.1:4000/v1/chat/completions');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 14,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => json_encode([
        'model' => 'auto',
        'messages' => [
            ['role' => 'system', 'content' => 'Tu es WEVIA, IA souveraine de WEVAL Consulting, cabinet transformation digitale a Casablanca. Reponds en francais, professionnel et concis.'],
            ['role' => 'user', 'content' => $msg]
        ],
        'max_tokens' => 800,
        'temperature' => 0.3,
    ])
]);
$resp = curl_exec($ch);
$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$time_ms = round(curl_getinfo($ch, CURLINFO_TOTAL_TIME) * 1000);
curl_close($ch);

if ($code === 200) {
    $d = json_decode($resp, true);
    $text = $d['choices'][0]['message']['content'] ?? '';
    $prov = $d['provider'] ?? 'sovereign';
    if ($text) {
        echo json_encode([
            'response' => $text,
            'provider' => $prov,
            'thinking' => ['Analyse en cours...'],
            'duration_ms' => $time_ms
        ]);
        exit;
    }
}

echo json_encode(['response' => 'Tous les providers sont occupes. Reessayez.', 'provider' => 'busy', 'duration_ms' => $time_ms]);