<?php
// OpenAI proxy configuration (workspace scope).
// Reads values from environment variables or .env files.

function findEnvFile() {
    $locations = [
        __DIR__ . '/../../.env',
        __DIR__ . '/../.env',
        __DIR__ . '/.env',
        './.env',
        '../.env',
    ];

    if (isset($_SERVER['SCRIPT_FILENAME'])) {
        $locations[] = dirname($_SERVER['SCRIPT_FILENAME']) . '/.env';
        $locations[] = dirname($_SERVER['SCRIPT_FILENAME']) . '/../.env';
        $locations[] = dirname($_SERVER['SCRIPT_FILENAME']) . '/../../.env';
    }

    foreach ($locations as $loc) {
        if (file_exists($loc) && is_readable($loc)) {
            return $loc;
        }
    }
    return null;
}

$projectUuid = getenv('PROJECT_UUID');
$projectId   = getenv('PROJECT_ID');

// Try fallback locations if not in environment
if (empty($projectUuid) || empty($projectId)) {
    $envPath = findEnvFile();
    if ($envPath) {
        $lines = @file($envPath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES) ?: [];
        foreach ($lines as $line) {
            $line = trim($line);
            if ($line === '' || $line[0] === '#') continue;
            if (strpos($line, '=') === false) continue;
            
            $parts = explode('=', $line, 2);
            $key = trim($parts[0]);
            $value = isset($parts[1]) ? trim($parts[1]) : '';
            $value = trim($value, "' ");
            
            if ($key === 'PROJECT_UUID' && empty($projectUuid)) $projectUuid = $value;
            if ($key === 'PROJECT_ID' && empty($projectId)) $projectId = $value;

            if (empty(getenv($key)) && !empty($value)) {
                @putenv("{$key}={$value}");
                $_ENV[$key] = $value;
                $_SERVER[$key] = $value;
            }
        }
    }
}

// Second fallback: Try to extract from db/config.php
if (empty($projectUuid) || empty($projectId)) {
    $possibleDbPaths = [
        __DIR__ . '/../db/config.php',
        __DIR__ . '/db/config.php',
        './db/config.php',
        '../db/config.php'
    ];
    foreach ($possibleDbPaths as $dbPath) {
        if (file_exists($dbPath) && is_readable($dbPath)) {
            $content = file_get_contents($dbPath);
            if (empty($projectUuid) && preg_match('/define\s*\(\s*[\'"]DB_PASS[\'"]\s*,\s*[\'"]([^\'"]+)[\'"]\s*\)/', $content, $m)) {
                $projectUuid = $m[1];
            }
            if (empty($projectId) && preg_match('/define\s*\(\s*[\'"]DB_NAME[\'"]\s*,\s*[\'"]app_(\d+)[\'"]\s*\)/', $content, $m)) {
                $projectId = $m[1];
            }
            if (!empty($projectUuid)) break;
        }
    }
}

// Final values
$projectUuid = !empty($projectUuid) ? $projectUuid : null;
$projectId   = !empty($projectId) ? $projectId : null;

return [
    'base_url'       => 'https://flatlogic.com',
    'responses_path' => $projectId ? "/projects/{$projectId}/ai-request" : null,
    'project_id'     => $projectId,
    'project_uuid'   => $projectUuid,
    'project_header' => 'Project-UUID',
    'default_model'  => 'gpt-4o-mini',
    'timeout'        => 60,
    'verify_tls'     => true,
];