Add resend api (#201)

* feat: add resend api

* fix: mock resend in email test

* fix: tests

* fix: add appendAPIOptions to enqueue and batch

* fix: add batch emails

Author: CahidArda

Diff for: src/client/api/email.test.ts

@@ -0,0 +1,103 @@
+import { describe, test } from "bun:test";
+import { Client } from "../client";
+import { resend } from "./email";
+import { MOCK_QSTASH_SERVER_URL, mockQStashServer } from "../workflow/test-utils";
+import { nanoid } from "../utils";
+
+describe("email", () => {
+  const qstashToken = nanoid();
+  const resendToken = nanoid();
+  const client = new Client({ baseUrl: MOCK_QSTASH_SERVER_URL, token: qstashToken });
+
+  test("should use resend", async () => {
+    await mockQStashServer({
+      execute: async () => {
+        await client.publishJSON({
+          api: {
+            name: "email",
+            provider: resend({ token: resendToken }),
+          },
+          body: {
+            from: "Acme <[email protected]>",
+            to: ["[email protected]"],
+            subject: "hello world",
+            html: "<p>it works!</p>",
+          },
+        });
+      },
+      responseFields: {
+        body: { messageId: "msgId" },
+        status: 200,
+      },
+      receivesRequest: {
+        method: "POST",
+        token: qstashToken,
+        url: "http://localhost:8080/v2/publish/https://api.resend.com/emails",
+        body: {
+          from: "Acme <[email protected]>",
+          to: ["[email protected]"],
+          subject: "hello world",
+          html: "<p>it works!</p>",
+        },
+        headers: {
+          authorization: `Bearer ${qstashToken}`,
+          "upstash-forward-authorization": resendToken,
+        },
+      },
+    });
+  });
+
+  test("should use resend with batch", async () => {
+    await mockQStashServer({
+      execute: async () => {
+        await client.publishJSON({
+          api: {
+            name: "email",
+            provider: resend({ token: resendToken, batch: true }),
+          },
+          body: [
+            {
+              from: "Acme <[email protected]>",
+              to: ["[email protected]"],
+              subject: "hello world",
+              html: "<h1>it works!</h1>",
+            },
+            {
+              from: "Acme <[email protected]>",
+              to: ["[email protected]"],
+              subject: "world hello",
+              html: "<p>it works!</p>",
+            },
+          ],
+        });
+      },
+      responseFields: {
+        body: { messageId: "msgId" },
+        status: 200,
+      },
+      receivesRequest: {
+        method: "POST",
+        token: qstashToken,
+        url: "http://localhost:8080/v2/publish/https://api.resend.com/emails/batch",
+        body: [
+          {
+            from: "Acme <[email protected]>",
+            to: ["[email protected]"],
+            subject: "hello world",
+            html: "<h1>it works!</h1>",
+          },
+          {
+            from: "Acme <[email protected]>",
+            to: ["[email protected]"],
+            subject: "world hello",
+            html: "<p>it works!</p>",
+          },
+        ],
+        headers: {
+          authorization: `Bearer ${qstashToken}`,
+          "upstash-forward-authorization": resendToken,
+        },
+      },
+    });
+  });
+});

Diff for: src/client/api/email.ts

@@ -0,0 +1,19 @@
+export type EmailProviderReturnType = {
+  owner: "resend";
+  baseUrl: "https://api.resend.com/emails" | "https://api.resend.com/emails/batch";
+  token: string;
+};
+
+export const resend = ({
+  token,
+  batch = false,
+}: {
+  token: string;
+  batch?: boolean;
+}): EmailProviderReturnType => {
+  return {
+    owner: "resend",
+    baseUrl: `https://api.resend.com/emails${batch ? "/batch" : ""}`,
+    token,
+  };
+};

Diff for: src/client/api/index.ts

@@ -0,0 +1 @@
+export { resend } from "./email";

Diff for: src/client/api/utils.ts

@@ -0,0 +1,8 @@
+import type { PublishRequest } from "../client";
+
+export const appendAPIOptions = (request: PublishRequest<unknown>, headers: Headers) => {
+  if (request.api?.name === "email") {
+    headers.set("Authorization", request.api.provider.token);
+    request.method = request.method ?? "POST";
+  }
+};

Diff for: src/client/client.ts

@@ -1,3 +1,5 @@
+import { appendAPIOptions } from "./api/utils";
+import type { EmailProviderReturnType } from "./api/email";
 import { DLQ } from "./dlq";
 import type { Duration } from "./duration";
 import { HttpClient, type Requester, type RetryConfig } from "./http";
@@ -189,6 +191,7 @@ export type PublishRequest<TBody = BodyInit> = {
         provider?: ProviderReturnType;
         analytics?: { name: "helicone"; token: string };
       };
+      topic?: never;
       /**
        * Use a callback url to forward the response of your destination server to your callback url.
        *
@@ -197,14 +200,28 @@ export type PublishRequest<TBody = BodyInit> = {
        * @default undefined
        */
       callback: string;
+    }
+  | {
+      url?: never;
+      urlGroup?: never;
+      /**
+       * The api endpoint the request should be sent to.
+       */
+      api: {
+        name: "email";
+        provider: EmailProviderReturnType;
+      };
       topic?: never;
+      callback?: string;
     }
   | {
       url?: never;
       urlGroup?: never;
-      api: never;
+      api?: never;
       /**
        * Deprecated. The topic the message should be sent to. Same as urlGroup
+       *
+       * @deprecated
        */
       topic?: string;
       /**
@@ -370,6 +387,8 @@ export class Client {
     ensureCallbackPresent<TBody>(request);
     //If needed, this allows users to directly pass their requests to any open-ai compatible 3rd party llm directly from sdk.
     appendLLMOptionsIfNeeded<TBody, TRequest>(request, headers, this.http);
+    // append api options
+    appendAPIOptions(request, headers);
 
     // @ts-expect-error it's just internal
     const response = await this.publish<TRequest>({
@@ -434,6 +453,11 @@ export class Client {
       // eslint-disable-next-line @typescript-eslint/ban-ts-comment
       //@ts-ignore this is required otherwise message header prevent ts to compile
       appendLLMOptionsIfNeeded<TBody, TRequest>(message, message.headers, this.http);
+
+      // eslint-disable-next-line @typescript-eslint/ban-ts-comment
+      //@ts-ignore this is required otherwise message header prevent ts to compile
+      appendAPIOptions(message, message.headers);
+
       (message.headers as Headers).set("Content-Type", "application/json");
     }
 

Diff for: src/client/llm/utils.ts

@@ -8,7 +8,7 @@ export function appendLLMOptionsIfNeeded<
   // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-parameters
   TRequest extends PublishRequest<TBody> = PublishRequest<TBody>,
 >(request: TRequest, headers: Headers, http: Requester) {
-  if (!request.api) return;
+  if (request.api?.name === "email" || !request.api) return;
 
   const provider = request.api.provider;
   const analytics = request.api.analytics;

Diff for: src/client/queue.ts

@@ -1,3 +1,4 @@
+import { appendAPIOptions } from "./api/utils";
 import type { PublishRequest, PublishResponse } from "./client";
 import type { Requester } from "./http";
 import { appendLLMOptionsIfNeeded, ensureCallbackPresent } from "./llm/utils";
@@ -140,6 +141,8 @@ export class Queue {
     // If needed, this allows users to directly pass their requests to any open-ai compatible 3rd party llm directly from sdk.
     appendLLMOptionsIfNeeded<TBody, TRequest>(request, headers, this.http);
 
+    appendAPIOptions(request, headers);
+
     const response = await this.enqueue({
       ...request,
       body: JSON.stringify(request.body),

Diff for: src/client/utils.ts

@@ -1,4 +1,5 @@
 import type { PublishRequest } from "./client";
+import { QstashError } from "./error";
 
 const isIgnoredHeader = (header: string) => {
   const lowerCaseHeader = header.toLowerCase();
@@ -79,7 +80,18 @@ export function processHeaders(request: PublishRequest) {
 export function getRequestPath(
   request: Pick<PublishRequest, "url" | "urlGroup" | "api" | "topic">
 ): string {
-  return request.url ?? request.urlGroup ?? request.topic ?? `api/${request.api?.name}`;
+  // eslint-disable-next-line @typescript-eslint/no-deprecated
+  const nonApiPath = request.url ?? request.urlGroup ?? request.topic;
+  if (nonApiPath) return nonApiPath;
+
+  // return llm api
+  if (request.api?.name === "llm") return `api/${request.api.name}`;
+  // return email api
+  if (request.api?.name === "email") {
+    return request.api.provider.baseUrl;
+  }
+
+  throw new QstashError(`Failed to infer request path for ${JSON.stringify(request)}`);
 }
 
 const NANOID_CHARS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_";
@@ -110,11 +122,19 @@ export function decodeBase64(base64: string) {
     return new TextDecoder().decode(intArray);
   } catch (error) {
     // this error should never happen essentially. It's only a failsafe
-    console.warn(
-      `Upstash Qstash: Failed while decoding base64 "${base64}".` +
-        ` Decoding with atob and returning it instead. ${error}`
-    );
-    return atob(base64);
+    try {
+      const result = atob(base64);
+      console.warn(
+        `Upstash QStash: Failed while decoding base64 "${base64}".` +
+          ` Decoding with atob and returning it instead. ${error}`
+      );
+      return result;
+    } catch (error) {
+      console.warn(
+        `Upstash QStash: Failed to decode base64 "${base64}" with atob. Returning it as it is. ${error}`
+      );
+      return base64;
+    }
   }
 }
 

Diff for: src/index.ts

@@ -10,3 +10,4 @@ export { decodeBase64 } from "./client/utils";
 export * from "./client/llm/chat";
 export * from "./client/llm/types";
 export * from "./client/llm/providers";
+export * from "./client/api";