<?php
header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');
$action = $_GET['action'] ?? 'full_check';
$db = new PDO('pgsql:host=localhost;dbname=adx_system', 'admin', 'admin123');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->exec("SET search_path TO admin,public");

switch($action) {

case 'full_check':
case 'status':
    $start = microtime(true);
    $results = ['timestamp'=>date('Y-m-d H:i:s'),'checks'=>[],'summary'=>['ok'=>0,'warn'=>0,'critical'=>0]];
    
    // 1. Screen audit
    $html_dir = '/opt/wevads-arsenal/public/';
    $total_screens = count(glob($html_dir.'*.html'));
    $screens_with_fetch = 0; $screens_raw_php = 0; $screens_tiny = 0;
    foreach(glob($html_dir.'*.html') as $f) {
        $c = file_get_contents($f); $sz = filesize($f);
        if(preg_match('/<script[^>]*>.*?fetch\(/s', $c)) $screens_with_fetch++;
        $body = '';
        if(preg_match('/<body[^>]*>(.*)<\/body>/s', $c, $m)) {
            $body = preg_replace('/<script[^>]*>.*?<\/script>/s', '', $m[1]);
            if(strpos($body, '<?php') !== false) $screens_raw_php++;
        }
        if($sz < 1000) $screens_tiny++;
    }
    $screen_health = ($screens_raw_php == 0 && $screens_tiny < 3) ? 'ok' : ($screens_raw_php > 0 ? 'critical' : 'warn');
    $results['checks']['screens'] = [
        'status'=>$screen_health, 'total'=>$total_screens, 'api_connected'=>$screens_with_fetch,
        'disconnected'=>$total_screens - $screens_with_fetch, 'raw_php'=>$screens_raw_php, 'tiny'=>$screens_tiny
    ];
    $results['summary'][$screen_health]++;
    
    // 2. API audit
    $total_apis = count(glob($html_dir.'api/*.php'));
    $api_ok = 0; $api_err = 0;
    $critical_apis = ['hamid-chef.php','provider-router.php','ia-provider-factory.php','send-factory.php',
        'brain-combo.php','offer-engine.php','account-creator.php','ads-platform.php','youtube-channels.php',
        'healing.php','warmup.php','semi-auto-send.php','arsenal-health.php'];
    $api_details = [];
    foreach($critical_apis as $api) {
        $url = "http://127.0.0.1:5890/api/{$api}?action=status";
        $ctx = stream_context_create(['http'=>['timeout'=>3]]);
        $resp = @file_get_contents($url, false, $ctx);
        $valid = ($resp && strlen($resp) > 5 && $resp[0] === '{' && strpos($resp, 'Fatal error') === false && strpos($resp, 'Parse error') === false);
        $api_details[] = ['api'=>$api, 'status'=>$valid ? 'ok' : 'error'];
        if($valid) $api_ok++; else $api_err++;
    }
    $api_health = ($api_err == 0) ? 'ok' : (($api_err > 3) ? 'critical' : 'warn');
    $results['checks']['apis'] = ['status'=>$api_health,'total'=>$total_apis,'critical_ok'=>$api_ok,'critical_err'=>$api_err,'details'=>$api_details];
    $results['summary'][$api_health]++;
    
    // 3. Database
    try {
        $tables = $db->query("SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='admin'")->fetchColumn();
        $contacts = $db->query("SELECT COUNT(*) FROM send_contacts")->fetchColumn();
        $offers = $db->query("SELECT COUNT(*) FROM affiliate.offers")->fetchColumn();
        $personas = $db->query("SELECT COUNT(*) FROM personas")->fetchColumn();
        $ia = $db->query("SELECT COUNT(*) FROM ia_provider_accounts")->fetchColumn();
        $warmup = $db->query("SELECT COUNT(*) FROM warmup_accounts")->fetchColumn();
        $o365 = $db->query("SELECT COUNT(*) FROM o365_accounts")->fetchColumn();
        $brain = $db->query("SELECT COUNT(*) FROM brain_winners")->fetchColumn();
        $ads = $db->query("SELECT COUNT(*) FROM ads_accounts")->fetchColumn();
        $camp = $db->query("SELECT COUNT(*) FROM campaigns")->fetchColumn();
        $yt = $db->query("SELECT COUNT(*) FROM youtube_channels")->fetchColumn();
        $dbsz = $db->query("SELECT pg_size_pretty(pg_database_size('adx_system'))")->fetchColumn();
        $results['checks']['database'] = [
            'status'=>'ok','tables'=>(int)$tables,'db_size'=>$dbsz,
            'data'=>['contacts'=>(int)$contacts,'offers'=>(int)$offers,'personas'=>(int)$personas,
                'ia_accounts'=>(int)$ia,'warmup'=>(int)$warmup,'o365'=>(int)$o365,
                'brain_winners'=>(int)$brain,'ads_accounts'=>(int)$ads,'campaigns'=>(int)$camp,'youtube'=>(int)$yt]
        ];
        $results['summary']['ok']++;
    } catch(Exception $e) {
        $results['checks']['database'] = ['status'=>'critical','error'=>$e->getMessage()];
        $results['summary']['critical']++;
    }
    
    // 4. Infrastructure
    $ovh_up = @fsockopen('151.80.235.110', 80, $en, $es, 2) ? true : false;
    $disk = trim(shell_exec("df -h / | tail -1 | awk '{print $5}'"));
    $load = trim(shell_exec("cat /proc/loadavg | cut -d' ' -f1-3"));
    $mem = trim(shell_exec("free -m | awk 'NR==2{printf \"%d/%dMB (%.0f%%)\", $3,$2,$3*100/$2}'"));
    $results['checks']['infrastructure'] = [
        'status'=>$ovh_up ? 'ok' : 'warn', 'hetzner'=>'online', 'ovh_tracking'=>$ovh_up ? 'online' : 'offline',
        'disk_usage'=>$disk, 'load'=>$load, 'memory'=>$mem
    ];
    $results['summary'][$ovh_up ? 'ok' : 'warn']++;
    
    // 5. Vault
    $gold = count(glob('/opt/wevads/vault/*.gold'));
    $results['checks']['vault'] = ['status'=>($gold > 1000) ? 'ok' : 'warn','gold_files'=>$gold];
    $results['summary'][($gold > 1000) ? 'ok' : 'warn']++;
    
    // 6. Ads
    $ctx2 = stream_context_create(['http'=>['timeout'=>3]]);
    $ads_r = @file_get_contents("http://127.0.0.1:5890/api/ads-platform.php?action=gare_flux", false, $ctx2);
    $ads_ok = ($ads_r && strpos($ads_r, '"flux"') !== false);
    $results['checks']['ads'] = ['status'=>$ads_ok ? 'ok' : 'warn', 'flux_api'=>$ads_ok];
    $results['summary'][$ads_ok ? 'ok' : 'warn']++;
    
    $elapsed = round((microtime(true) - $start) * 1000);
    $results['elapsed_ms'] = $elapsed;
    $results['overall'] = ($results['summary']['critical'] > 0) ? 'CRITICAL' : (($results['summary']['warn'] > 0) ? 'WARNING' : 'HEALTHY');
    echo json_encode($results, JSON_PRETTY_PRINT);
    break;

case 'screens':
    $dir = '/opt/wevads-arsenal/public/';
    $out = [];
    foreach(glob($dir.'*.html') as $f) {
        $c = file_get_contents($f); $sz = filesize($f); $bn = basename($f);
        $has_fetch = (bool)preg_match('/<script[^>]*>.*?fetch\(/s', $c);
        $has_theme = (strpos($c,'#0a0e1a')!==false || strpos($c,'#0f172a')!==false || strpos($c,'linear-gradient')!==false);
        $body = '';
        if(preg_match('/<body[^>]*>(.*)<\/body>/s', $c, $m)) {
            $body = preg_replace('/<script[^>]*>.*?<\/script>/s', '', $m[1]);
        }
        $has_php = (strpos($body,'<?php') !== false);
        $alerts = preg_match_all('/onclick="alert\(/', $c);
        $status = 'ok';
        if($has_php) $status = 'critical';
        elseif($sz < 2000) $status = 'warn';
        elseif(!$has_fetch && $sz > 5000) $status = 'disconnected';
        $out[] = ['name'=>$bn,'size'=>$sz,'api'=>$has_fetch,'theme'=>$has_theme,'php'=>$has_php,'alerts'=>$alerts,'status'=>$status];
    }
    echo json_encode(['status'=>'success','total'=>count($out),'screens'=>$out]);
    break;

default:
    echo json_encode(['status'=>'success','service'=>'Sentinel V5','actions'=>['full_check','status','screens']]);
}