#!/usr/bin/env php
<?php
/**
 * JSON Code Formatter
 * 
 * Formats JSON files with proper indentation and validation
 */

class JsonFormatter
{
    private $verbose = false;
    
    /**
     * Main entry point
     */
    public function run($argv)
    {
        // Parse command line arguments
        $files = [];
        
        for ($i = 1; $i < count($argv); $i++) {
            $arg = $argv[$i];
            
            if ($arg === '--verbose' || $arg === '-v') {
                $this->verbose = true;
            } elseif ($arg === '--help' || $arg === '-h') {
                $this->show_help();
                exit(0);
            } elseif (substr($arg, 0, 1) !== '-') {
                $files[] = $arg;
            }
        }
        
        // If no files specified, show help
        if (empty($files)) {
            $this->show_help();
            exit(1);
        }
        
        $this->format_files($files);
    }
    
    /**
     * Format specified files
     */
    private function format_files($paths)
    {
        foreach ($paths as $path) {
            // Make path absolute if relative
            if (substr($path, 0, 1) !== '/') {
                $path = getcwd() . '/' . $path;
            }
            
            if (is_file($path)) {
                $this->format_file($path);
            } else {
                $this->warning("Path not found: $path");
            }
        }
    }
    
    /**
     * Format a single JSON file
     */
    private function format_file($file_path)
    {
        // Skip non-JSON files
        if (substr($file_path, -5) !== '.json') {
            return;
        }
        
        $content = file_get_contents($file_path);
        $decoded = json_decode($content);
        
        if (json_last_error() !== JSON_ERROR_NONE) {
            $this->error("Invalid JSON in $file_path: " . json_last_error_msg());
            return;
        }
        
        $formatted = json_encode($decoded, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . "\n";
        
        if ($content !== $formatted) {
            file_put_contents($file_path, $formatted);
            $this->success("✓ Formatted: $file_path");
        } else {
            if ($this->verbose) {
                $this->info("Already formatted: $file_path");
            }
        }
    }
    
    /**
     * Show help message
     */
    private function show_help()
    {
        $this->output("JSON Formatter");
        $this->output("");
        $this->output("Usage: json-formatter [options] files...");
        $this->output("");
        $this->output("Options:");
        $this->output("  -v, --verbose   Show detailed output");
        $this->output("  -h, --help      Show this help message");
        $this->output("");
        $this->output("Examples:");
        $this->output("  json-formatter package.json");
        $this->output("  json-formatter composer.json tsconfig.json");
    }
    
    /**
     * Output helpers
     */
    private function output($message)
    {
        echo $message . PHP_EOL;
    }
    
    private function success($message)
    {
        echo "\033[32m" . $message . "\033[0m" . PHP_EOL;
    }
    
    private function info($message)
    {
        echo "\033[36m" . $message . "\033[0m" . PHP_EOL;
    }
    
    private function warning($message)
    {
        echo "\033[33m" . $message . "\033[0m" . PHP_EOL;
    }
    
    private function error($message)
    {
        echo "\033[31m" . $message . "\033[0m" . PHP_EOL;
    }
}

// Run the formatter
$formatter = new JsonFormatter();
$formatter->run($argv);