api-example.js•3.19 kB
#!/usr/bin/env node
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
import { spawn } from 'child_process';
// Get the directory name of the current module
const __dirname = path.dirname(fileURLToPath(import.meta.url));
// Read the example SVG
const svgPath = path.join(__dirname, 'example.svg');
const svgCode = fs.readFileSync(svgPath, 'utf8');
// Output directory
const outputDir = path.join(__dirname, 'output');
fs.mkdirSync(outputDir, { recursive: true });
// Output paths
const pngOutputPath = path.join(outputDir, 'example.png');
const jpgOutputPath = path.join(outputDir, 'example.jpg');
// Function to call the MCP server programmatically
async function callMcpServer(toolName, params) {
return new Promise((resolve, reject) => {
// Adjust the path to your MCP server build
const serverPath = path.join(__dirname, '..', 'build', 'index.js');
// Start the MCP server process, allowing access to the output directory
const serverProcess = spawn('node', [serverPath, outputDir]);
let stdoutData = '';
let stderrData = '';
serverProcess.stdout.on('data', (data) => {
stdoutData += data.toString();
});
serverProcess.stderr.on('data', (data) => {
stderrData += data.toString();
});
// Prepare the MCP tool call in JSON-RPC format
const request = {
jsonrpc: '2.0',
id: 1,
method: 'tools/call',
params: {
name: toolName,
arguments: params
}
};
// Write the request to the server's stdin
serverProcess.stdin.write(JSON.stringify(request) + '\n');
serverProcess.stdin.end();
serverProcess.on('close', (code) => {
if (code !== 0) {
console.error(`Server process exited with code ${code}`);
console.error('STDERR:', stderrData);
reject(new Error(`Server process exited with code ${code}`));
return;
}
try {
// Parse the response from stdout
const lines = stdoutData.trim().split('\n');
const lastLine = lines[lines.length - 1];
const response = JSON.parse(lastLine);
if (response.error) {
reject(new Error(response.error.message));
} else {
resolve(response.result);
}
} catch (err) {
console.error('Failed to parse server response:', err);
console.error('STDOUT:', stdoutData);
reject(err);
}
});
});
}
// Main function
async function main() {
try {
console.log('Converting SVG to PNG...');
const pngResult = await callMcpServer('svg-to-png', {
svgCode,
outputPath: pngOutputPath,
scale: 2
});
console.log('PNG conversion result:', pngResult);
console.log('\nConverting SVG to JPG...');
const jpgResult = await callMcpServer('svg-to-jpg', {
svgCode,
outputPath: jpgOutputPath,
quality: 95,
backgroundColor: '#ffffff'
});
console.log('JPG conversion result:', jpgResult);
console.log('\nConversion complete! Check the output directory.');
} catch (error) {
console.error('Error:', error);
}
}
main();
