// server/postal.ts
function createPostalClient(options) {
  const baseUrl = options.baseUrl.trim();
  const apiKey = options.apiKey.trim();
  const from = options.from.trim();
  const fetchImpl = options.fetchImpl ?? fetch;
  const enabled = baseUrl.length > 0 && apiKey.length > 0 && from.length > 0;
  return {
    enabled,
    async sendMessage(input) {
      if (!enabled || input.to.length === 0) {
        return;
      }
      const endpoint = new URL("/api/v1/send/message", ensureTrailingSlash(baseUrl));
      const response = await fetchImpl(endpoint, {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
          "X-Server-API-Key": apiKey
        },
        body: JSON.stringify({
          from,
          to: input.to,
          subject: input.subject,
          plain_body: input.plainBody,
          html_body: input.htmlBody
        })
      });
      const rawBody = await response.text().catch(() => "");
      const payload = rawBody.length > 0 ? (() => {
        try {
          return JSON.parse(rawBody);
        } catch {
          return null;
        }
      })() ?? null : null;
      if (!response.ok || payload?.status !== "success") {
        const details = payload?.error?.trim() || payload?.message?.trim() || rawBody.trim().slice(0, 500) || "no_response_body";
        throw new Error(`postal_send_failed:${response.status}:${details}`);
      }
    }
  };
}
function createPostalClientFromEnv(options = {}) {
  const env = options.env ?? process.env;
  return createPostalClient({
    baseUrl: env[options.baseUrlEnv ?? "POSTAL_URL"] ?? "",
    apiKey: env[options.apiKeyEnv ?? "POSTAL_API_KEY"] ?? "",
    from: env[options.fromEnv ?? "POSTAL_MESSAGE_FROM"] ?? "",
    fetchImpl: options.fetchImpl
  });
}
function ensureTrailingSlash(value) {
  return value.endsWith("/") ? value : `${value}/`;
}
export {
  createPostalClient,
  createPostalClientFromEnv
};
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