// Fixed API call script for your workflow
export const code = async (inputs) => {
  const { diagram, format } = inputs;

  // diagram is now your exact multiline DSL (including any %%init%% lines)
  if (!diagram || !diagram.trim()) {
    throw new Error("No Mermaid input provided");
  }

  // Ensure proper newlines are preserved and normalize line endings
  const normalizedDiagram = diagram
    .replace(/\r\n/g, '\n')  // Convert Windows line endings
    .replace(/\r/g, '\n')    // Convert old Mac line endings
    .trim();                 // Remove leading/trailing whitespace

  // Log for debugging
  console.log("Sending diagram:");
  console.log(JSON.stringify(normalizedDiagram));

  const url = `https://diagrams.starbit.cloud/generate?type=${encodeURIComponent(format)}`;
  const resp = await fetch(url, {
    method: "POST",
    headers: { 
      "Content-Type": "text/plain; charset=utf-8"  // Explicit charset
    },
    body: normalizedDiagram,        // <-- send the normalized, multi-line DSL
  });

  if (!resp.ok) {
    const txt = await resp.text();
    throw new Error(`Mermaid-server error ${resp.status}: ${txt}`);
  }

  const buffer = Buffer.from(await resp.arrayBuffer());
  const mime = format === "png" ? "image/png" : "image/svg+xml";
  const file = `data:${mime};base64,${buffer.toString("base64")}`;

  return { file };
};