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fix-presentation-lines.js
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executable file
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#!/usr/bin/env node
/**
* Fix Line Breaks in Existing Presentations
*
* Applies deterministic line breaking to existing presentation JSON files
* to ensure all code blocks fit within the 60-character limit.
*
* Usage:
* node scripts/fix-presentation-lines.js --all # Fix all presentations
* node scripts/fix-presentation-lines.js --file lesson-4.json # Fix specific file
* node scripts/fix-presentation-lines.js --dry-run --all # Show what would change
*/
import { readFileSync, writeFileSync, readdirSync, existsSync, statSync } from 'fs';
import { join, dirname, basename } from 'path';
import { fileURLToPath } from 'url';
import { processPresentation } from './lib/line-breaker.js';
// ES module __dirname equivalent
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
// Line breaking has been disabled - this script is no longer functional
console.log('⚠️ Line breaking has been disabled in the presentation generation pipeline.');
console.log('ℹ️ This script is no longer functional and will not modify presentations.');
process.exit(0);
const PRESENTATIONS_DIR = join(__dirname, '../website/static/presentations');
/**
* Parse command-line arguments
*/
function parseArgs() {
const args = process.argv.slice(2);
const config = {
all: false,
file: null,
dryRun: false,
};
for (let i = 0; i < args.length; i++) {
if (args[i] === '--all') {
config.all = true;
} else if (args[i] === '--file' && i + 1 < args.length) {
config.file = args[i + 1];
i++;
} else if (args[i] === '--dry-run') {
config.dryRun = true;
}
}
return config;
}
/**
* Find all presentation JSON files (recursively)
*/
function findPresentationFiles(dir) {
if (!existsSync(dir)) {
console.error(`❌ Presentations directory not found: ${dir}`);
return [];
}
const files = [];
function traverse(currentDir) {
const items = readdirSync(currentDir);
for (const item of items) {
const fullPath = join(currentDir, item);
const stat = statSync(fullPath);
if (stat.isDirectory()) {
traverse(fullPath);
} else if (item.endsWith('.json') && item !== 'manifest.json') {
files.push(fullPath);
}
}
}
traverse(dir);
return files.sort();
}
/**
* Analyze a presentation for line length issues
*/
function analyzePresentation(presentation) {
const issues = [];
let maxLineLength = 0;
let totalLongLines = 0;
for (const slide of presentation.slides || []) {
// Check code slides
if (slide.type === 'code' && slide.code) {
const lines = slide.code.split('\n');
for (let i = 0; i < lines.length; i++) {
if (lines[i].length > 60) {
totalLongLines++;
maxLineLength = Math.max(maxLineLength, lines[i].length);
issues.push({
slideTitle: slide.title || 'Untitled',
location: 'code',
line: i + 1,
length: lines[i].length,
preview: lines[i].substring(0, 50) + '...',
});
}
}
}
// Check codeComparison slides
if (slide.type === 'codeComparison') {
if (slide.leftCode?.code) {
const lines = slide.leftCode.code.split('\n');
for (let i = 0; i < lines.length; i++) {
if (lines[i].length > 60) {
totalLongLines++;
maxLineLength = Math.max(maxLineLength, lines[i].length);
issues.push({
slideTitle: slide.title || 'Untitled',
location: 'leftCode',
line: i + 1,
length: lines[i].length,
preview: lines[i].substring(0, 50) + '...',
});
}
}
}
if (slide.rightCode?.code) {
const lines = slide.rightCode.code.split('\n');
for (let i = 0; i < lines.length; i++) {
if (lines[i].length > 60) {
totalLongLines++;
maxLineLength = Math.max(maxLineLength, lines[i].length);
issues.push({
slideTitle: slide.title || 'Untitled',
location: 'rightCode',
line: i + 1,
length: lines[i].length,
preview: lines[i].substring(0, 50) + '...',
});
}
}
}
}
// Check codeExecution slides
if (slide.type === 'codeExecution' && Array.isArray(slide.steps)) {
for (let i = 0; i < slide.steps.length; i++) {
if (slide.steps[i].line && typeof slide.steps[i].line === 'string') {
// Split by newlines and check each line individually
const lines = slide.steps[i].line.split('\n');
for (let j = 0; j < lines.length; j++) {
if (lines[j].length > 60) {
totalLongLines++;
maxLineLength = Math.max(maxLineLength, lines[j].length);
issues.push({
slideTitle: slide.title || 'Untitled',
location: `step ${i + 1}, line ${j + 1}`,
line: j + 1,
length: lines[j].length,
preview: lines[j].substring(0, 50) + '...',
});
}
}
}
}
}
}
return {
totalLongLines,
maxLineLength,
issues: issues.slice(0, 5), // Show first 5 issues
hasIssues: totalLongLines > 0,
};
}
/**
* Process a single presentation file
*/
function processFile(filePath, dryRun = false) {
const fileName = basename(filePath);
console.log(`\n📄 ${fileName}`);
try {
// Read and parse JSON
const content = readFileSync(filePath, 'utf-8');
const presentation = JSON.parse(content);
// Analyze before processing
const beforeAnalysis = analyzePresentation(presentation);
if (!beforeAnalysis.hasIssues) {
console.log(' ✅ No lines exceed 60 characters');
return {
success: true,
changed: false,
fileName,
};
}
console.log(` ⚠️ Found ${beforeAnalysis.totalLongLines} long lines (max: ${beforeAnalysis.maxLineLength} chars)`);
if (beforeAnalysis.issues.length > 0) {
console.log(' 📍 Sample issues:');
for (const issue of beforeAnalysis.issues) {
console.log(` - "${issue.slideTitle}" (${issue.location}): ${issue.length} chars`);
}
}
// Apply line breaking
const { presentation: processedPresentation, stats } = processPresentation(presentation);
// Analyze after processing
const afterAnalysis = analyzePresentation(processedPresentation);
if (dryRun) {
console.log(` 🔍 DRY RUN: Would fix ${stats.linesShortened} lines (max reduction: ${stats.maxReduction} chars)`);
if (afterAnalysis.hasIssues) {
console.log(` ⚠️ ${afterAnalysis.totalLongLines} lines would still exceed limit`);
} else {
console.log(' ✅ All lines would be within limit after processing');
}
} else {
// Write back
writeFileSync(filePath, JSON.stringify(processedPresentation, null, 2), 'utf-8');
console.log(` ✂️ Fixed ${stats.linesShortened} lines (max reduction: ${stats.maxReduction} chars)`);
if (afterAnalysis.hasIssues) {
console.log(` ⚠️ Warning: ${afterAnalysis.totalLongLines} lines still exceed limit`);
} else {
console.log(' ✅ All lines now within 60-character limit');
}
}
return {
success: true,
changed: stats.linesShortened > 0,
fileName,
stats,
};
} catch (error) {
console.error(` ❌ Error: ${error.message}`);
return {
success: false,
changed: false,
fileName,
error: error.message,
};
}
}
/**
* Main execution
*/
function main() {
const config = parseArgs();
if (!config.all && !config.file) {
console.log('Usage:');
console.log(' node scripts/fix-presentation-lines.js --all');
console.log(' node scripts/fix-presentation-lines.js --file lesson-4.json');
console.log(' node scripts/fix-presentation-lines.js --dry-run --all');
process.exit(1);
}
console.log('🔧 Fixing Presentation Line Breaks');
console.log('=' .repeat(50));
if (config.dryRun) {
console.log('🔍 DRY RUN MODE - No files will be modified\n');
}
let files = [];
if (config.all) {
files = findPresentationFiles(PRESENTATIONS_DIR);
console.log(`\nFound ${files.length} presentation files\n`);
} else if (config.file) {
let filePath;
// Handle absolute paths, relative paths from project root, or just filename
if (config.file.startsWith('/')) {
// Absolute path
filePath = config.file;
} else if (config.file.startsWith('website/')) {
// Relative path from project root
filePath = join(__dirname, '..', config.file);
} else {
// Just filename - look in PRESENTATIONS_DIR
filePath = join(PRESENTATIONS_DIR, config.file);
}
if (!existsSync(filePath)) {
console.error(`❌ File not found: ${filePath}`);
process.exit(1);
}
files = [filePath];
}
// Process all files
const results = files.map(file => processFile(file, config.dryRun));
// Summary
console.log('\n' + '='.repeat(50));
console.log('📊 Summary\n');
const successful = results.filter(r => r.success);
const changed = results.filter(r => r.changed);
const errors = results.filter(r => !r.success);
console.log(`Total files processed: ${results.length}`);
console.log(`✅ Successful: ${successful.length}`);
console.log(`✂️ Modified: ${changed.length}`);
if (errors.length > 0) {
console.log(`❌ Errors: ${errors.length}`);
console.log('\nFailed files:');
for (const result of errors) {
console.log(` - ${result.fileName}: ${result.error}`);
}
}
if (changed.length > 0) {
const totalLinesFixed = changed.reduce((sum, r) => sum + (r.stats?.linesShortened || 0), 0);
const maxReduction = Math.max(...changed.map(r => r.stats?.maxReduction || 0));
console.log(`\nTotal lines fixed: ${totalLinesFixed}`);
console.log(`Maximum reduction: ${maxReduction} characters`);
}
if (config.dryRun) {
console.log('\n💡 Run without --dry-run to apply changes');
}
console.log();
process.exit(errors.length > 0 ? 1 : 0);
}
main();