// Alternative API call using GET with URL encoding (like the healthcheck)
export const code = async (inputs) => {
  const { diagram, format } = inputs;

  if (!diagram || !diagram.trim()) {
    throw new Error("No Mermaid input provided");
  }

  // 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

  // URL encode the diagram (this preserves newlines as %0A)
  const encodedDiagram = encodeURIComponent(normalizedDiagram);
  
  // Log for debugging
  console.log("Original diagram:");
  console.log(JSON.stringify(normalizedDiagram));
  console.log("URL encoded diagram:");
  console.log(encodedDiagram);

  // Use GET with data parameter (like the healthcheck does)
  const url = `https://diagrams.starbit.cloud/generate?type=${encodeURIComponent(format)}&data=${encodedDiagram}`;
  
  const resp = await fetch(url, {
    method: "GET",
  });

  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 };
};