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

// TEST SEND WHITELIST
$ALLOWED_TEST = ['yacineutt@gmail.com','ymahboub@weval-consulting.com','joecloud@proton.me'];

switch($action) {
case 'status':
    $pmta = @fsockopen("10.1.0.2", 25, $errno, $errstr, 3);
    $pmta_ok = (bool)$pmta; if($pmta) fclose($pmta);
    $sa = (int)$db->query("SELECT count(*) FROM admin.office_accounts WHERE status='active' AND admin_email LIKE '%@%'")->fetchColumn();
    $st = (int)$db->query("SELECT count(*) FROM admin.office_accounts WHERE admin_email LIKE '%@%'")->fetchColumn();
    $today = $db->query("SELECT count(*) as total, count(CASE WHEN status='sent' THEN 1 END) as ok, count(CASE WHEN status='failed' THEN 1 END) as fail FROM ethica.send_log WHERE sent_at::date = CURRENT_DATE")->fetch(PDO::FETCH_ASSOC);
    echo json_encode(["ok"=>true,"pmta_reachable"=>$pmta_ok,"pmta_host"=>"10.1.0.2:25","senders_active"=>$sa,"senders_total"=>$st,"capacity_per_day"=>min($sa,50)*50,"sent_today"=>(int)$today['total'],"sent_today_ok"=>(int)$today['ok'],"sent_today_fail"=>(int)$today['fail'],"sent_total"=>(int)$db->query("SELECT count(*) FROM ethica.send_log")->fetchColumn(),"consent_tokens"=>(int)$db->query("SELECT count(*) FROM ethica.consent_tokens")->fetchColumn(),"timestamp"=>date('c')], JSON_PRETTY_PRINT);
    break;
case 'isp_distribution':
    $r = $db->query("SELECT count(CASE WHEN email ~* '@gmail\\.com$' THEN 1 END) as gmail, count(CASE WHEN email ~* '@(yahoo\\.|hotmail\\.|outlook\\.|live\\.|msn\\.)' THEN 1 END) as yahoo, count(CASE WHEN email ~* '@.*\\.onmicrosoft\\.com$' THEN 1 END) as microsoft, count(*) as total FROM ethica.medecins_real WHERE email IS NOT NULL AND email!='' AND status='active'")->fetch(PDO::FETCH_ASSOC);
    $g=(int)$r['gmail'];$y=(int)$r['yahoo'];$m=(int)$r['microsoft'];$t=(int)$r['total'];
    echo json_encode(["ok"=>true,"distribution"=>["gmail"=>$g,"yahoo"=>$y,"microsoft"=>$m,"other"=>$t-$g-$y-$m,"total"=>$t]], JSON_PRETTY_PRINT);
    break;
case 'senders':
    $limit = min((int)($_GET['limit'] ?? 20), 50);
    $accs = $db->query("SELECT admin_email as email, status FROM admin.office_accounts WHERE status='active' AND admin_email LIKE '%@%' ORDER BY RANDOM() LIMIT $limit")->fetchAll(PDO::FETCH_ASSOC);
    foreach($accs as &$a){$last=$db->prepare("SELECT sent_at FROM ethica.send_log WHERE sender_account=? ORDER BY id DESC LIMIT 1");$last->execute([$a['email']]);$l=$last->fetch(PDO::FETCH_ASSOC);$a['last_used']=$l?substr($l['sent_at'],0,19):null;$a['status']='ok';}
    echo json_encode(["ok"=>true,"senders"=>$accs], JSON_PRETTY_PRINT);
    break;
case 'send_log':
    $limit = min((int)($_GET['limit'] ?? 30), 100);
    $logs = $db->query("SELECT email,sender_account,status,isp,domain,sent_at FROM ethica.send_log ORDER BY id DESC LIMIT $limit")->fetchAll(PDO::FETCH_ASSOC);
    echo json_encode(["ok"=>true,"logs"=>$logs], JSON_PRETTY_PRINT);
    break;
case 'campaigns':
    $camps = $db->query("SELECT id,name,status,target_pays,target_count,sent_count,open_count,click_count,bounce_count,brand,created_at FROM ethica.campaigns ORDER BY id DESC LIMIT 10")->fetchAll(PDO::FETCH_ASSOC);
    echo json_encode(["ok"=>true,"campaigns"=>$camps], JSON_PRETTY_PRINT);
    break;
case 'test_send':
    $email = $_GET['email'] ?? '';
    if(!in_array($email, $ALLOWED_TEST)){echo json_encode(["ok"=>false,"error"=>"Test restricted to: ".implode(', ',$ALLOWED_TEST)]);break;}
    $template = $_GET['template'] ?? 'consent';
    $tpl = $db->query("SELECT html_body,subject_line FROM ethica.email_templates WHERE category='$template' LIMIT 1")->fetch(PDO::FETCH_ASSOC);
    if(!$tpl) $tpl = $db->query("SELECT html_body,subject_line FROM ethica.email_templates LIMIT 1")->fetch(PDO::FETCH_ASSOC);
    $sender = $db->query("SELECT admin_email FROM admin.office_accounts WHERE status='active' AND admin_email LIKE '%@%' ORDER BY RANDOM() LIMIT 1")->fetchColumn();
    $html = str_replace(['{{PRENOM}}','{{NOM}}','{{SPECIALITE}}','{{CONSENT_URL}}','{{UNSUBSCRIBE_URL}}','{{PIXEL}}'],['Yacine','MAHBOUB','Consultant','https://consent.wevup.app/?token=TEST&action=optin','https://consent.wevup.app/?token=TEST&action=optout',''],$tpl['html_body']);
    $subject = str_replace(['{{PRENOM}}','{{NOM}}'],['Yacine','MAHBOUB'],$tpl['subject_line']);
    $sock = @fsockopen("10.1.0.2",25,$errno,$errstr,5);
    if(!$sock){echo json_encode(["ok"=>false,"error"=>"PMTA fail: $errstr"]);break;}
    fgets($sock);fputs($sock,"EHLO ethica.local\r\n");$r=fgets($sock);while(substr($r,3,1)=='-')$r=fgets($sock);
    fputs($sock,"MAIL FROM:<$sender>\r\n");$r=fgets($sock);if(substr($r,0,3)!='250'){fclose($sock);echo json_encode(["ok"=>false,"error"=>"FROM rejected"]);break;}
    fputs($sock,"RCPT TO:<$email>\r\n");$r=fgets($sock);if(substr($r,0,3)!='250'){fclose($sock);echo json_encode(["ok"=>false,"error"=>"RCPT rejected: $r"]);break;}
    fputs($sock,"DATA\r\n");fgets($sock);
    $msgId='<'.bin2hex(random_bytes(12)).'@'.explode('@',$sender)[1].'>';
    $msg="From: Ethica Sante <$sender>\r\nTo: <$email>\r\nSubject: [TEST] $subject\r\nMessage-ID: $msgId\r\nDate: ".date('r')."\r\nMIME-Version: 1.0\r\nContent-Type: text/html; charset=utf-8\r\nX-MS-Exchange-Organization-SCL: -1\r\nList-Unsubscribe: <mailto:unsub@wevup.app>\r\n\r\n$html\r\n.\r\n";
    fputs($sock,$msg);$r=fgets($sock);fputs($sock,"QUIT\r\n");fclose($sock);
    $sent=substr($r,0,3)=='250';
    $st=$db->prepare("INSERT INTO ethica.send_log (campaign_id,medecin_id,email,sender_account,status,tracking_id,isp,domain,sent_at,created_at) VALUES (0,0,?,?,?,?,'Test','test',NOW(),NOW())");
    $st->execute([$email,$sender,$sent?'sent':'failed',bin2hex(random_bytes(8))]);
    echo json_encode(["ok"=>true,"sent"=>$sent,"sender"=>$sender,"subject"=>"[TEST] $subject","error"=>$sent?null:"PMTA: $r"], JSON_PRETTY_PRINT);
    break;
default:
    echo json_encode(["ok"=>false,"actions"=>["status","isp_distribution","senders","send_log","campaigns","test_send"]]);
}