<?php
header("Content-Type: application/json");

// Check nginx location /api/sovereign/
$nginx_sov = @shell_exec("grep -A 15 'location /api/sovereign' /etc/nginx/sites-available/*.conf /etc/nginx/sites-enabled/*.conf 2>/dev/null | head -30");

// Check cascade service
$svc = @shell_exec("systemctl status weval-sovereign-cascade 2>&1 | head -15");

// Test both HTTPS and direct with timing
$t0 = microtime(true);
$direct = @file_get_contents("http://127.0.0.1:4000/v1/chat/completions", false, stream_context_create([
    "http"=>["method"=>"POST","header"=>"Content-Type: application/json\r\n",
    "content"=>json_encode(["model"=>"fast","messages"=>[["role"=>"user","content"=>"hi"]],"max_tokens"=>10]),
    "timeout"=>10]
]));
$direct_ms = round((microtime(true)-$t0)*1000);

// Check recent nginx errors
$nginx_err = @shell_exec("tail -30 /var/log/nginx/error.log 2>/dev/null | grep -iE 'sovereign|503|upstream' | head -10");

// FPM status
$fpm = @shell_exec("systemctl is-active php8.4-fpm 2>&1");

echo json_encode([
    "nginx_sovereign_config" => trim($nginx_sov),
    "cascade_service" => trim($svc),
    "direct_cascade_ms" => $direct_ms,
    "direct_test_ok" => $direct ? "OK: " . substr($direct, 0, 100) : "FAIL",
    "nginx_errors" => trim($nginx_err),
    "fpm_status" => trim($fpm),
], JSON_PRETTY_PRINT);