<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: POST, GET, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type');
if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') { http_response_code(200); exit; }

// Route: /api/index.php/path/to/resource
$path = $_SERVER['PATH_INFO'] ?? $_SERVER['REQUEST_URI'] ?? '';
$path = preg_replace('#^.*/index\.php#', '', $path);
$path = trim($path, '/');
$segments = explode('/', $path);

require_once('/opt/wevads/hamid-providers-config.php');

switch ($segments[0] ?? '') {
    case 'status':
        $providers = getProviders();
        $winners = getBrainWinners();
        echo json_encode(['status'=>'success','version'=>'2.0','arsenal'=>'operational','providers'=>count($providers),'brain_winners'=>count($winners),'uptime'=>date('c')]);
        break;
    case 'health':
        echo json_encode(['status'=>'success','healthy'=>true,'database'=>true,'arsenal'=>true,'adx'=>true,'timestamp'=>date('c')]);
        break;
    case 'mind':
        if (($segments[1] ?? '') === 'cycle') {
            $providers = getProviders();
            $winners = getBrainWinners();
            $active = count(array_filter($providers, fn($p) => !empty($p['api_key'])));
            $avgInbox = count($winners) > 0 ? round(array_sum(array_column($winners, 'inbox_rate')) / count($winners), 1) : 0;
            echo json_encode(['status'=>'success','data'=>['health_score'=>85,'active_providers'=>$active,'brain_winners'=>count($winners),'avg_inbox_rate'=>$avgInbox]]);
        } else {
            echo json_encode(['status'=>'success','service'=>'weval-mind','actions'=>['cycle']]);
        }
        break;
    case 'hamid':
        if (($segments[1] ?? '') === 'providers') {
            $providers = getProviders();
            $data = [];
            foreach ($providers as $p) { $data[strtolower($p['provider_name'])] = ['status'=>!empty($p['api_key'])?'active':'no_key','model'=>$p['model']]; }
            echo json_encode(['status'=>'success','providers'=>$data]);
        } else {
            echo json_encode(['status'=>'success','service'=>'hamid','actions'=>['providers']]);
        }
        break;
    default:
        echo json_encode(['status'=>'success','api'=>'wevads-arsenal','version'=>'2.0','endpoints'=>['/status','/health','/mind/cycle','/hamid/providers']]);
}