<?php
/**
 * Cloudbot Social - Inter-Agent Conversation API
 * DOCTRINE 143 WAVE-278
 * Fait parler 2 agents WEVAL entre eux sur un topic, retourne le dialogue
 */
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: Content-Type');
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') exit;

set_time_limit(90);

$input = json_decode(file_get_contents('php://input'), true) ?: [];
$agent1 = trim($input['agent1'] ?? 'WEVIA');
$agent2 = trim($input['agent2'] ?? 'Ethica');
$topic = trim($input['topic'] ?? '');
$turns = max(1, min(6, (int)($input['turns'] ?? 3)));

if (!$topic) { echo json_encode(['error' => 'topic required']); exit; }

// Map agent name -> API endpoint
$AGENT_APIS = [
    'wevia' => '/api/weval-ia-fast.php',
    'wevia master' => '/api/wevia-master-api.php',
    'weval mind' => '/api/hamid-api-proxy.php',
    'ethica' => '/api/ethica-brain.php',
    'blade' => '/api/blade-brain.php',
    'bladerazor' => '/api/blade-brain.php',
    'manager' => '/api/weval-manager.php',
    'wevcode' => '/api/wevcode-superclaude.php',
    'wedroid' => '/api/wedroid-brain-api.php',
    'consensus' => '/api/chat-proxy.php',
    'default' => '/api/weval-ia-fast.php',
];

function route_agent($name, $apis) {
    $n = mb_strtolower(trim($name));
    foreach ($apis as $k => $v) { if ($k !== 'default' && strpos($n, $k) !== false) return $v; }
    return $apis['default'];
}

function call_agent($endpoint, $msg, $session) {
    $url = 'http://127.0.0.1' . $endpoint;
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_POST => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT => 25,
        CURLOPT_HTTPHEADER => [
            'Content-Type: application/json',
            'Host: weval-consulting.com',
            'Referer: https://weval-consulting.com/cloudbot-social.html'
        ],
        CURLOPT_POSTFIELDS => json_encode([
            'message' => $msg,
            'msg' => $msg,
            'provider' => 'cerebras',
            'session_id' => $session
        ])
    ]);
    $resp = curl_exec($ch);
    $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);
    if ($code !== 200) return ['error' => "HTTP $code", 'raw' => substr($resp ?? '', 0, 300)];
    $d = @json_decode($resp, true);
    if (!$d) return ['error' => 'non-JSON', 'raw' => substr($resp, 0, 300)];
    $reply = $d['response'] ?? $d['content'] ?? $d['output'] ?? $d['message'] ?? '';
    if (is_array($reply)) $reply = json_encode($reply);
    return [
        'reply' => mb_substr((string)$reply, 0, 800),
        'provider' => $d['provider'] ?? 'unknown',
        'raw' => null
    ];
}

$ep1 = route_agent($agent1, $AGENT_APIS);
$ep2 = route_agent($agent2, $AGENT_APIS);
$session_id = 'interagent_' . date('YmdHis') . '_' . substr(md5(uniqid()), 0, 8);

$dialogue = [];
$current_msg = "Salut $agent2 ! Je suis $agent1. Parlons de : $topic. Donne ton point de vue en 2-3 phrases max.";
$current_from = $agent1;
$current_to = $agent2;
$current_endpoint = $ep2;

for ($i = 0; $i < $turns; $i++) {
    $t_start = microtime(true);
    $res = call_agent($current_endpoint, $current_msg, $session_id);
    $latency = round((microtime(true) - $t_start) * 1000);
    
    $dialogue[] = [
        'turn' => $i + 1,
        'from' => $current_from,
        'to' => $current_to,
        'message' => $current_msg,
        'response' => $res['reply'] ?? ('[ERR] ' . ($res['error'] ?? 'unknown')),
        'provider' => $res['provider'] ?? 'error',
        'latency_ms' => $latency,
        'ts' => date('c')
    ];
    
    if (isset($res['error'])) {
        // Stop early on error
        break;
    }
    
    // Reverse for next turn: the responder asks back to opposite agent
    $reply = $res['reply'];
    $current_msg = "$current_from a repondu : \"" . mb_substr($reply, 0, 300) . "\". Qu'en penses-tu ? Ajoute ton expertise.";
    $tmp_from = $current_to;
    $current_to = $current_from;
    $current_from = $tmp_from;
    $current_endpoint = ($current_endpoint === $ep1) ? $ep2 : $ep1;
}

// Log in PG (wevia_conversations) pour que ca apparaisse dans SSE
try {
    $pdo = new PDO(
        "pgsql:host=10.1.0.3;dbname=adx_system",
        "admin",
        "admin123",
        [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_TIMEOUT => 3]
    );
    $pdo->prepare("INSERT INTO public.conversations (session_id, title, source) VALUES (?, ?, ?)")
        ->execute([$session_id, "Inter-Agent: $agent1 x $agent2", 'cloudbot-social-interagent']);
    $cid = $pdo->lastInsertId();
    foreach ($dialogue as $d) {
        $pdo->prepare("INSERT INTO public.messages (conversation_id, role, content) VALUES (?, ?, ?)")
            ->execute([$cid, $d['from'], "[→" . $d['to'] . "] " . mb_substr($d['message'], 0, 2000)]);
        $pdo->prepare("INSERT INTO public.messages (conversation_id, role, content) VALUES (?, ?, ?)")
            ->execute([$cid, 'assistant', mb_substr($d['response'], 0, 2000)]);
    }
} catch (Exception $e) {
    // Silent - log optional
}

echo json_encode([
    'ok' => true,
    'topic' => $topic,
    'agents' => ['agent1' => $agent1, 'agent2' => $agent2],
    'endpoints' => ['agent1' => $ep1, 'agent2' => $ep2],
    'session_id' => $session_id,
    'turns_completed' => count($dialogue),
    'dialogue' => $dialogue,
    'logged_to_db' => isset($cid)
], JSON_UNESCAPED_UNICODE);