#!/usr/bin/env php
<?php
/**
 * Copy packages from node_modules to assets/vendor and update importmap.php
 * This script replaces Symfony's importmap:install by using npm packages
 */

$baseDir = __DIR__ . '/..';
$importmapFile = $baseDir . '/importmap.php';
$nodeModulesDir = $baseDir . '/node_modules';
$assetsVendorDir = $baseDir . '/assets/vendor';

if (!file_exists($importmapFile)) {
    fwrite(STDERR, "Error: importmap.php not found\n");
    exit(1);
}

if (!is_dir($nodeModulesDir)) {
    fwrite(STDERR, "Error: node_modules directory not found. Run 'npm install' first.\n");
    exit(1);
}

// Create assets/vendor directory
if (!is_dir($assetsVendorDir)) {
    mkdir($assetsVendorDir, 0755, true);
}

$map = require $importmapFile;
$updated = false;
$errors = [];

/**
 * Find the entry point file for a package
 */
function findEntryPoint($packageDir) {
    if (!is_dir($packageDir)) {
        return null;
    }
    
    $packageJson = $packageDir . '/package.json';
    if (file_exists($packageJson)) {
        $pkg = json_decode(file_get_contents($packageJson), true);
        
        // Check exports field (ESM)
        if (isset($pkg['exports'])) {
            $exports = $pkg['exports'];
            if (is_string($exports)) {
                $exports = ['.' => $exports];
            }
            if (isset($exports['.']['import']) || isset($exports['.']['default'])) {
                $exportPath = $exports['.']['import'] ?? $exports['.']['default'];
                if ($exportPath && file_exists($packageDir . '/' . $exportPath)) {
                    return $packageDir . '/' . $exportPath;
                }
            }
        }
        
        // Check module field (ESM)
        if (isset($pkg['module']) && file_exists($packageDir . '/' . $pkg['module'])) {
            return $packageDir . '/' . $pkg['module'];
        }
        
        // Check main field
        if (isset($pkg['main']) && file_exists($packageDir . '/' . $pkg['main'])) {
            return $packageDir . '/' . $pkg['main'];
        }
    }
    
    // Fallback: try common locations
    $commonPaths = [
        '/dist/index.js',
        '/index.js',
        '/esm/index.js',
        '/es/index.js',
        '/lib/index.js',
        '/src/index.js',
        '/main.js',
    ];
    
    foreach ($commonPaths as $path) {
        if (file_exists($packageDir . $path)) {
            return $packageDir . $path;
        }
    }
    
    // Last resort: find any .js file in root
    $files = glob($packageDir . '/*.js');
    if (!empty($files)) {
        return $files[0];
    }
    
    // Try dist directory
    $distFiles = glob($packageDir . '/dist/*.js');
    if (!empty($distFiles)) {
        return $distFiles[0];
    }
    
    return null;
}

/**
 * Copy package to assets/vendor
 */
function copyPackage($packageName, $nodeModulesDir, $assetsVendorDir) {
    // Handle scoped packages
    $parts = explode('/', $packageName);
    if ($packageName[0] === '@') {
        $sourceDir = $nodeModulesDir . '/' . $parts[0] . '/' . $parts[1];
        $targetDir = $assetsVendorDir . '/' . $parts[0] . '/' . $parts[1];
    } else {
        $sourceDir = $nodeModulesDir . '/' . $parts[0];
        $targetDir = $assetsVendorDir . '/' . $parts[0];
    }
    
    if (!is_dir($sourceDir)) {
        return ['success' => false, 'error' => "Package not found in node_modules: $packageName"];
    }
    
    $entryPoint = findEntryPoint($sourceDir);
    if (!$entryPoint) {
        return ['success' => false, 'error' => "Could not find entry point for: $packageName"];
    }
    
    // Create target directory
    if (!is_dir($targetDir)) {
        mkdir($targetDir, 0755, true);
    }
    
    // Copy entry point to index.js
    $targetFile = $targetDir . '/index.js';
    if (!copy($entryPoint, $targetFile)) {
        return ['success' => false, 'error' => "Failed to copy file: $entryPoint"];
    }
    
    // Copy package.json for reference (optional)
    $pkgJson = $sourceDir . '/package.json';
    if (file_exists($pkgJson)) {
        copy($pkgJson, $targetDir . '/package.json');
    }
    
    return ['success' => true, 'path' => './assets/vendor/' . str_replace($assetsVendorDir . '/', '', $targetFile)];
}

// Process each entry in importmap
foreach ($map as $name => &$config) {
    // Only process entries with version but no path (need to be installed)
    if (isset($config['version']) && !isset($config['path'])) {
        // Extract package name (handle subpaths like 'quill/dist/quill.core.css')
        $parts = explode('/', $name);
        if ($name[0] === '@') {
            // Scoped package: @noble/curves/secp256k1 -> @noble/curves
            $packageName = $parts[0] . '/' . $parts[1];
        } else {
            // Regular package: quill/dist/quill.core.css -> quill
            $packageName = $parts[0];
        }
        
        $result = copyPackage($packageName, $nodeModulesDir, $assetsVendorDir);
        
        if ($result['success']) {
            // Update importmap.php entry - remove version when adding path
            $config['path'] = $result['path'];
            unset($config['version']); // Remove version when path is set
            $updated = true;
            echo "✓ Installed: $name -> {$result['path']}\n";
        } else {
            $errors[] = "$name: {$result['error']}";
            echo "✗ Failed: $name - {$result['error']}\n";
        }
    }
}

// Handle CSS files and subpaths - copy the full package structure
foreach ($map as $name => &$config) {
    if (isset($config['version']) && isset($config['type']) && $config['type'] === 'css') {
        // For CSS files, we need to copy from node_modules/dist
        $parts = explode('/', $name);
        $packageName = $parts[0];
        $subPath = implode('/', array_slice($parts, 1));
        
        if ($packageName[0] === '@') {
            $sourceFile = $nodeModulesDir . '/' . $parts[0] . '/' . $parts[1] . '/' . implode('/', array_slice($parts, 2));
            $targetDir = $assetsVendorDir . '/' . $parts[0] . '/' . $parts[1];
        } else {
            $sourceFile = $nodeModulesDir . '/' . $packageName . '/' . $subPath;
            $targetDir = $assetsVendorDir . '/' . $packageName;
        }
        
        if (file_exists($sourceFile)) {
            $targetFile = $targetDir . '/' . $subPath;
            $targetFileDir = dirname($targetFile);
            if (!is_dir($targetFileDir)) {
                mkdir($targetFileDir, 0755, true);
            }
            copy($sourceFile, $targetFile);
            $config['path'] = './assets/vendor/' . str_replace($assetsVendorDir . '/', '', $targetFile);
            $updated = true;
            echo "✓ Installed CSS: $name -> {$config['path']}\n";
        }
    }
}

// Handle subpaths (like 'nostr-tools/nip46')
foreach ($map as $name => &$config) {
    if (isset($config['version']) && !isset($config['path']) && strpos($name, '/') !== false && !isset($config['type'])) {
        $parts = explode('/', $name);
        $packageName = $parts[0];
        $subPath = $parts[1];
        
        if ($packageName[0] === '@') {
            $sourceFile = $nodeModulesDir . '/' . $parts[0] . '/' . $parts[1] . '/' . $subPath . '.js';
            $targetDir = $assetsVendorDir . '/' . $parts[0] . '/' . $parts[1];
        } else {
            $sourceFile = $nodeModulesDir . '/' . $packageName . '/' . $subPath . '.js';
            $targetDir = $assetsVendorDir . '/' . $packageName;
        }
        
        // Try .mjs extension too
        if (!file_exists($sourceFile)) {
            $sourceFile = str_replace('.js', '.mjs', $sourceFile);
        }
        
        if (file_exists($sourceFile)) {
            $targetFile = $targetDir . '/' . $subPath . '.js';
            $targetFileDir = dirname($targetFile);
            if (!is_dir($targetFileDir)) {
                mkdir($targetFileDir, 0755, true);
            }
            copy($sourceFile, $targetFile);
            $config['path'] = './assets/vendor/' . str_replace($assetsVendorDir . '/', '', $targetFile);
            unset($config['version']); // Remove version when path is set
            $updated = true;
            echo "✓ Installed subpath: $name -> {$config['path']}\n";
        }
    }
}

// Write updated importmap.php
if ($updated) {
    $content = "<?php\n\n";
    $content .= "/**\n";
    $content .= " * Returns the importmap for this application.\n";
    $content .= " *\n";
    $content .= " * - \"path\" is a path inside the asset mapper system. Use the\n";
    $content .= " *     \"debug:asset-map\" command to see the full list of paths.\n";
    $content .= " *\n";
    $content .= " * - \"entrypoint\" (JavaScript only) set to true for any module that will\n";
    $content .= " *     be used as an \"entrypoint\" (and passed to the importmap() Twig function).\n";
    $content .= " *\n";
    $content .= " * The \"importmap:require\" command can be used to add new entries to this file.\n";
    $content .= " *\n";
    $content .= " * This file is auto-generated from npm packages. Run scripts/npm-to-importmap.php to update.\n";
    $content .= " */\n";
    $content .= "return [\n";
    
    foreach ($map as $name => $config) {
        $nameEscaped = str_replace("'", "\\'", $name);
        $content .= "    '$nameEscaped' => [\n";
        
        if (isset($config['path'])) {
            $pathEscaped = str_replace("'", "\\'", $config['path']);
            $content .= "        'path' => '$pathEscaped',\n";
        }
        if (isset($config['version'])) {
            $versionEscaped = str_replace("'", "\\'", $config['version']);
            $content .= "        'version' => '$versionEscaped',\n";
        }
        if (isset($config['type'])) {
            $typeEscaped = str_replace("'", "\\'", $config['type']);
            $content .= "        'type' => '$typeEscaped',\n";
        }
        if (isset($config['entrypoint'])) {
            $content .= "        'entrypoint' => " . ($config['entrypoint'] ? 'true' : 'false') . ",\n";
        }
        
        $content .= "    ],\n";
    }
    
    $content .= "];\n";
    
    file_put_contents($importmapFile, $content);
    echo "\n✓ Updated importmap.php\n";
}

if (!empty($errors)) {
    echo "\n⚠ Errors encountered:\n";
    foreach ($errors as $error) {
        echo "  - $error\n";
    }
    exit(1);
}

echo "\n✓ All packages installed successfully!\n";