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/** * Image Export and Repository Evolution Example * * This example demonstrates how to use the image export and repository evolution * tracking features of Archy. * * To run this example: * 1. Build the project: npm run build * 2. Run: node examples/image-export-and-evolution.js */ import fs from 'fs'; import path from 'path'; import { fileURLToPath } from 'url'; import { exportDiagramInMemory, exportDiagramToDataUrl } from '../build/utils/image-exporter.js'; import { InMemoryGit } from '../build/utils/git-memory.js'; // Get the directory of this script const __filename = fileURLToPath(import.meta.url); const __dirname = path.dirname(__filename); // Example 1: Export a diagram to an image async function exportDiagramExample() { console.log('Example 1: Export a diagram to an image'); // Create a simple flowchart const mermaidCode = ` flowchart TD A[Start] --> B{Is it working?} B -->|Yes| C[Great!] B -->|No| D[Debug] C --> E[Deploy] D --> B E --> F[End] `; try { // Export the diagram to PNG console.log('Exporting diagram to PNG...'); const pngBuffer = await exportDiagramInMemory(mermaidCode, { format: 'png', width: 800, height: 600, backgroundColor: '#ffffff' }); // Save the PNG to a file const pngPath = path.join(__dirname, 'diagram.png'); fs.writeFileSync(pngPath, pngBuffer); console.log(`PNG saved to: ${pngPath}`); // Export the diagram to SVG console.log('Exporting diagram to SVG...'); const svgBuffer = await exportDiagramInMemory(mermaidCode, { format: 'svg', width: 800, height: 600, backgroundColor: '#ffffff' }); // Save the SVG to a file const svgPath = path.join(__dirname, 'diagram.svg'); fs.writeFileSync(svgPath, svgBuffer); console.log(`SVG saved to: ${svgPath}`); // Export the diagram to a data URL console.log('Exporting diagram to data URL...'); const dataUrl = await exportDiagramToDataUrl(mermaidCode, { format: 'png', width: 800, height: 600, backgroundColor: '#ffffff' }); console.log(`Data URL: ${dataUrl.substring(0, 50)}...`); } catch (error) { console.error('Error:', error.message); } } // Example 2: Track repository evolution async function repositoryEvolutionExample() { console.log('\nExample 2: Track repository evolution'); try { // Create an in-memory git repository const git = new InMemoryGit(); // Clone a repository console.log('Cloning repository...'); const repoUrl = 'https://github.com/mermaid-js/mermaid'; await git.clone(repoUrl); // Get the commit history console.log('Getting commit history...'); const commits = await git.getCommits(5); // Limit to 5 commits console.log('Recent commits:'); for (const commit of commits) { console.log(`- ${commit.sha.substring(0, 7)}: ${commit.message.split('\n')[0]}`); console.log(` Author: ${commit.author.name} <${commit.author.email}>`); console.log(` Files changed: ${commit.files.length}`); console.log(''); } // Get the evolution of a specific file if (commits.length > 0) { console.log('Tracking file evolution...'); const filepath = 'README.md'; // Track the README.md file const fileEvolution = await git.getFileEvolution(filepath, 3); // Limit to 3 versions console.log(`Evolution of ${filepath}:`); for (const version of fileEvolution) { console.log(`- ${version.sha.substring(0, 7)}: ${version.message.split('\n')[0]}`); console.log(` Content length: ${version.content.length} characters`); console.log(''); } // Generate a gitGraph diagram showing the evolution if (fileEvolution.length > 0) { console.log('Generating gitGraph diagram...'); let mermaidCode = `gitGraph commit id: "${fileEvolution[0].sha.substring(0, 7)}" tag: "initial"`; for (let i = 1; i < fileEvolution.length; i++) { const commit = fileEvolution[i]; mermaidCode += ` commit id: "${commit.sha.substring(0, 7)}" tag: "${i}"`; } console.log('Mermaid code:'); console.log('```mermaid'); console.log(mermaidCode); console.log('```'); // Export the diagram to PNG console.log('Exporting gitGraph to PNG...'); const pngBuffer = await exportDiagramInMemory(mermaidCode, { format: 'png', width: 800, height: 400, backgroundColor: '#ffffff' }); // Save the PNG to a file const pngPath = path.join(__dirname, 'git-evolution.png'); fs.writeFileSync(pngPath, pngBuffer); console.log(`Git evolution diagram saved to: ${pngPath}`); } } } catch (error) { console.error('Error:', error.message); } } // Run the examples (async () => { await exportDiagramExample(); await repositoryEvolutionExample(); console.log('\nExamples completed.'); })();