<?php
/**
 * Standalone Laravel Cache Optimization Script
 * Location: public/optimize.php
 */

// Enable full error reporting for debugging
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

define('SECURE_TOKEN', '7f3b89e902a2cdb8b5de9f2e30f14d8a245fca9b');

// Verify token
if (!isset($_GET['token']) || $_GET['token'] !== SECURE_TOKEN) {
    header('HTTP/1.0 403 Forbidden');
    echo "Access Denied: Invalid or missing security token.";
    exit;
}

header('Content-Type: text/plain; charset=utf-8');

echo "=========================================\n";
echo "Starting Laravel Cache Optimization Workflow\n";
echo "Current Time: " . date('Y-m-d H:i:s') . "\n";
echo "=========================================\n\n";

// Print system diagnostics
echo "System Diagnostics:\n";
echo "PHP Version: " . PHP_VERSION . "\n";
echo "Disabled Functions: " . (ini_get('disable_functions') ?: '(none)') . "\n";
echo "shell_exec status: " . (function_exists('shell_exec') ? 'Enabled' : 'Disabled') . "\n";
echo "exec status: " . (function_exists('exec') ? 'Enabled' : 'Disabled') . "\n";
echo "system status: " . (function_exists('system') ? 'Enabled' : 'Disabled') . "\n";
echo "proc_open status: " . (function_exists('proc_open') ? 'Enabled' : 'Disabled') . "\n";
echo "-----------------------------------------\n\n";

// Robust Laravel Root Directory Auto-Detection
$targetDir = __DIR__;
for ($i = 0; $i < 4; $i++) {
    if (file_exists($targetDir . '/artisan')) {
        break;
    }
    $parent = realpath($targetDir . '/../');
    if (!$parent || $parent === $targetDir) {
        break;
    }
    $targetDir = $parent;
}

if (file_exists($targetDir . '/artisan')) {
    chdir($targetDir);
    echo "Laravel Root Detected: " . getcwd() . "\n\n";
} else {
    chdir(__DIR__);
    echo "Warning: artisan file not found in path hierarchy. Falling back to script directory: " . getcwd() . "\n\n";
}

// Helper function to execute commands with proc_open or standard fallbacks
function execute($cmd) {
    echo "$ {$cmd}\n";
    
    $output = '';
    
    if (function_exists('proc_open')) {
        $descriptorspec = [
            0 => ["pipe", "r"], // stdin
            1 => ["pipe", "w"], // stdout
            2 => ["pipe", "w"]  // stderr
        ];
        
        $process = proc_open($cmd, $descriptorspec, $pipes);
        
        if (is_resource($process)) {
            fclose($pipes[0]);
            
            $stdout = stream_get_contents($pipes[1]);
            fclose($pipes[1]);
            
            $stderr = stream_get_contents($pipes[2]);
            fclose($pipes[2]);
            
            proc_close($process);
            $output = $stdout . $stderr;
        } else {
            $output = "Error: Failed to open process using proc_open.";
        }
    } elseif (function_exists('shell_exec')) {
        $output = shell_exec($cmd);
    } elseif (function_exists('exec')) {
        $outputLines = [];
        exec($cmd, $outputLines);
        $output = implode("\n", $outputLines);
    } elseif (function_exists('system')) {
        ob_start();
        system($cmd);
        $output = ob_get_clean();
    } else {
        echo "Error: No command execution functions (proc_open, shell_exec, exec, system) are enabled on this hosting server.\n";
        echo "-----------------------------------------\n";
        return;
    }
    
    echo $output ? trim($output) : "(no output)";
    echo "\n-----------------------------------------\n";
}

// Determine action
$action = isset($_GET['action']) ? $_GET['action'] : 'optimize';

if ($action === 'clear') {
    echo "Action: Clearing All Caches\n\n";
    execute("php artisan optimize:clear 2>&1");
} elseif ($action === 'migrate') {
    echo "Action: Running Migrations\n\n";
    execute("php artisan migrate --force 2>&1");
} elseif ($action === 'all') {
    echo "Action: Full Optimization & Migration Workflow\n\n";
    execute("php artisan optimize:clear 2>&1");
    execute("php artisan config:cache 2>&1");
    execute("php artisan route:cache 2>&1");
    execute("php artisan view:cache 2>&1");
    execute("php artisan event:cache 2>&1");
    execute("php artisan migrate --force 2>&1");
} else {
    echo "Action: Standard Cache Optimization\n\n";
    execute("php artisan optimize:clear 2>&1");
    execute("php artisan config:cache 2>&1");
    execute("php artisan route:cache 2>&1");
    execute("php artisan view:cache 2>&1");
    execute("php artisan event:cache 2>&1");
}

echo "Optimization workflow finished.\n";