export async function uploadToOpeninary(file: File, folder: string = "marmarislocal"): Promise<string> {
  const url = `${process.env.OPENINARY_API_URL}/upload`;
  const key = process.env.OPENINARY_API_KEY;

  if (!url || !key) {
    throw new Error("Openinary configuration (OPENINARY_API_URL or OPENINARY_API_KEY) is missing in environment variables.");
  }

  const formData = new FormData();
  formData.append("files", file);
  formData.append("folder", folder);

  const response = await fetch(url, {
    method: "POST",
    headers: {
      "x-api-key": key,
    },
    body: formData,
  });

  if (!response.ok) {
    const errText = await response.text();
    throw new Error(`Openinary upload failed: ${response.statusText} - ${errText}`);
  }

  const data = await response.json();
  
  // Openinary standard response is usually an array: [{ url: "...", name: "..." }]
  if (Array.isArray(data) && data.length > 0) {
    return data[0].url || data[0].secure_url;
  } else if (data && typeof data === "object") {
    return data.url || data.secure_url || (data.files && data.files[0]?.url);
  }

  throw new Error("Invalid response format from Openinary server.");
}