#!/usr/bin/env node

/**
 * Fixes attachment links after files have been renamed
 * Usage: node .scripts/fix-renamed-links.js <old-name> <new-name>
 * 
 * This properly handles the case where files are renamed, not just moved
 */

import fs from 'fs';
import path from 'path';

const args = process.argv.slice(2);

if (args.length !== 2) {
    console.log('Usage: node .scripts/fix-renamed-links.js <old-filename> <new-filename>');
    console.log('Example: node .scripts/fix-renamed-links.js "CleanShot 2025-01-01.png" "Project Screenshot.png"');
    process.exit(1);
}

const [oldName, newName] = args;
const newPath = `05 Attachments/Organized/${newName}`;

console.log(`Fixing links: ${oldName} → ${newName}`);

// Function to walk directory
function walkDir(dir, callback) {
    fs.readdirSync(dir).forEach(f => {
        const dirPath = path.join(dir, f);
        const isDirectory = fs.statSync(dirPath).isDirectory();
        if (isDirectory) {
            // Skip node_modules, .git
            if (!f.includes('node_modules') && !f.includes('.git')) {
                walkDir(dirPath, callback);
            }
        } else {
            callback(path.join(dir, f));
        }
    });
}

// Process all markdown files
let updatedCount = 0;
const updatedFiles = [];

walkDir('.', (filepath) => {
    if (filepath.endsWith('.md')) {
        let content = fs.readFileSync(filepath, 'utf8');
        const originalContent = content;
        
        // Escape special regex characters in filename
        const escapedOld = oldName.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
        
        // Pattern 1: ![[oldname]] without path
        const pattern1 = new RegExp(`!\\[\\[${escapedOld}\\]\\]`, 'g');
        content = content.replace(pattern1, `![[${newPath}]]`);
        
        // Pattern 2: ![[05 Attachments/oldname]]
        const pattern2 = new RegExp(`!\\[\\[05 Attachments/${escapedOld}\\]\\]`, 'g');
        content = content.replace(pattern2, `![[${newPath}]]`);
        
        // Pattern 3: [[oldname]] without ! (for PDFs and other non-embedded)
        const pattern3 = new RegExp(`(?<!!)\\[\\[${escapedOld}\\]\\]`, 'g');
        content = content.replace(pattern3, `[[${newPath}]]`);
        
        // Pattern 4: [[05 Attachments/oldname]] without !
        const pattern4 = new RegExp(`(?<!!)\\[\\[05 Attachments/${escapedOld}\\]\\]`, 'g');
        content = content.replace(pattern4, `[[${newPath}]]`);
        
        // Write back if changed
        if (content !== originalContent) {
            fs.writeFileSync(filepath, content, 'utf8');
            updatedFiles.push(filepath);
            updatedCount++;
        }
    }
});

// Report results
if (updatedCount > 0) {
    console.log(`\nUpdated ${updatedCount} files:`);
    updatedFiles.forEach(file => console.log(`  - ${file}`));
} else {
    console.log('\nNo files needed updating');
}

console.log('\nDone!');