<?php
/**
 * Standalone Git Pull Deployment Script for Shared Hosting
 * Location: public/git-pull.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 Git Pull Deployment 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";

// Move to the root directory (one level up from public)
$rootPath = realpath(__DIR__ . '/../');
if ($rootPath) {
    chdir($rootPath);
}
echo "Working 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";
}

// 1. Check current status
execute("git status 2>&1");

// 2. Pull latest changes
execute("git pull origin main 2>&1");

// 3. Re-optimize Laravel cache and run migrations
execute("php artisan optimize:clear 2>&1");
execute("php artisan migrate --force 2>&1");

echo "Deployment workflow finished.\n";