import { renderMermaidSVG } from "beautiful-mermaid";

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

if (args.length < 2) {
  console.error("Usage: bun index.ts <input.mmd> <output.svg>");
  console.error("Example: bun index.ts diagram.mmd output.svg");
  process.exit(1);
}

const [inputPath, outputPath] = args;

try {
  // Read the .mmd file
  const diagramText = await Bun.file(inputPath).text();

  // Render to SVG
  const svg = renderMermaidSVG(diagramText);

  // Write to output file
  await Bun.write(outputPath, svg);

  console.log(`✓ Generated SVG: ${outputPath}`);
} catch (error) {
  if (error instanceof Error && "code" in error && error.code === "ENOENT") {
    console.error(`✗ Input file not found: ${inputPath}`);
  } else {
    console.error(`✗ Error: ${error instanceof Error ? error.message : String(error)}`);
  }
  process.exit(1);
}