@slidef/cli/dist/commands/convert.js

CLI tool for converting PDF slides to web-viewable format

import * as path from 'path';
import chalk from 'chalk';
import ora from 'ora';
import { convertPdfToImages } from '../utils/pdf.js';
import { saveMetadata, fileExists, getBaseName } from '../utils/file.js';
export async function convertCommand(pdfFile, options) {
    const spinner = ora('Starting PDF conversion...').start();
    try {
        // Check if PDF file exists
        const pdfPath = path.resolve(pdfFile);
        if (!(await fileExists(pdfPath))) {
            spinner.fail(chalk.red(`PDF file not found: ${pdfFile}`));
            process.exit(1);
        }
        // Determine slide name
        const slideName = options.name || getBaseName(pdfFile);
        const outputDir = path.resolve('slides', slideName);
        const imagesDir = path.join(outputDir, 'images');
        spinner.text = `Converting ${chalk.cyan(pdfFile)} to images...`;
        // Parse scale option
        const scale = options.scale ? parseFloat(options.scale) : 2;
        if (isNaN(scale) || scale <= 0) {
            spinner.fail(chalk.red('Scale must be a positive number'));
            process.exit(1);
        }
        // Convert PDF to images
        // Pass relative path to work around pdf-to-png-converter path handling
        const relativeImagesDir = path.relative(process.cwd(), imagesDir);
        const pageCount = await convertPdfToImages(pdfPath, relativeImagesDir, scale);
        spinner.text = 'Saving metadata...';
        // Create metadata
        const metadata = {
            name: slideName,
            filename: path.basename(pdfFile),
            pageCount,
            createdAt: new Date().toISOString(),
        };
        // Save metadata
        await saveMetadata(outputDir, metadata);
        spinner.succeed(chalk.green(`Successfully converted ${chalk.cyan(pageCount)} pages to ${chalk.cyan(outputDir)}`));
        console.log(chalk.gray('\nOutput structure:'));
        console.log(chalk.gray(`  ${outputDir}/`));
        console.log(chalk.gray(`  ├── images/`));
        console.log(chalk.gray(`  │   ├── slide-001.png`));
        console.log(chalk.gray(`  │   ├── slide-002.png`));
        console.log(chalk.gray(`  │   └── ...`));
        console.log(chalk.gray(`  └── metadata.json`));
    }
    catch (error) {
        spinner.fail(chalk.red('Conversion failed'));
        console.error(chalk.red('\nError:'), error instanceof Error ? error.message : error);
        process.exit(1);
    }
}
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