add missing mergeUsers method

src/client/users.ts

@@ -17,6 +17,7 @@ import {
   GetUserByIdParams,
   GetUserFieldsResponse,
   GetUserFieldsResponseSchema,
+  MergeUsersParams,
   UpdateEmailParams,
   UpdateUserParams,
   UpdateUserSubscriptionsParams,
@@ -180,5 +181,17 @@ export function Users<T extends Constructor<BaseIterableClient>>(Base: T) {
       const response = await this.client.get("/api/users/getFields");
       return validateResponse(response, GetUserFieldsResponseSchema);
     }
+
+    /**
+     * Merge two user profiles into one.
+     * All profile data and events from the source are migrated to the destination.
+     * Returns an error if the source user does not exist.
+     */
+    async mergeUsers(
+      params: MergeUsersParams
+    ): Promise<IterableSuccessResponse> {
+      const response = await this.client.post("/api/users/merge", params);
+      return validateResponse(response, IterableSuccessResponseSchema);
+    }
   };
 }

src/types/users.ts

@@ -277,3 +277,54 @@ export const UpdateUserSubscriptionsParamsSchema = z
 export type UpdateUserSubscriptionsParams = z.infer<
   typeof UpdateUserSubscriptionsParamsSchema
 >;
+
+export const ArrayMergeSchema = z.object({
+  field: z
+    .string()
+    .describe(
+      "Top-level user profile field containing an array to merge from source to destination"
+    ),
+  dedupeBy: z
+    .string()
+    .optional()
+    .describe(
+      "Field on array objects used for de-duplication during merge (only for arrays of objects)"
+    ),
+});
+
+export const MergeUsersParamsSchema = z
+  .object({
+    sourceEmail: z
+      .email()
+      .optional()
+      .describe("Email of the source user profile to merge from"),
+    sourceUserId: z
+      .string()
+      .optional()
+      .describe("User ID of the source user profile to merge from"),
+    destinationEmail: z
+      .email()
+      .optional()
+      .describe("Email of the destination user profile to merge into"),
+    destinationUserId: z
+      .string()
+      .optional()
+      .describe("User ID of the destination user profile to merge into"),
+    arrayMerge: z
+      .array(ArrayMergeSchema)
+      .optional()
+      .describe(
+        "Array fields whose contents should be merged (only custom arrays, not Iterable-managed ones like devices)"
+      ),
+  })
+  .refine(
+    (data) => data.sourceEmail || data.sourceUserId,
+    "Either sourceEmail or sourceUserId must be provided"
+  )
+  .refine(
+    (data) => data.destinationEmail || data.destinationUserId,
+    "Either destinationEmail or destinationUserId must be provided"
+  );
+
+export type MergeUsersParams = z.infer<typeof MergeUsersParamsSchema>;
+export type ArrayMerge = z.infer<typeof ArrayMergeSchema>;

tests/integration/users.test.ts

@@ -362,6 +362,45 @@ describe("User Management Integration Tests", () => {
     expect(updateResponse.code).toBe("Success");
   });
 
+  it("should merge two user profiles", async () => {
+    const mergeTestId = uniqueId();
+    const sourceEmail = `merge-source+${mergeTestId}@example.com`;
+    const destEmail = `merge-dest+${mergeTestId}@example.com`;
+
+    try {
+      // Create source user
+      await withTimeout(
+        client.updateUser({
+          email: sourceEmail,
+          dataFields: { mergeTest: true, sourceOnly: "from-source" },
+        })
+      );
+      await waitForUserUpdate(client, sourceEmail, { mergeTest: true });
+
+      // Create destination user
+      await withTimeout(
+        client.updateUser({
+          email: destEmail,
+          dataFields: { mergeTest: true, destOnly: "from-dest" },
+        })
+      );
+      await waitForUserUpdate(client, destEmail, { mergeTest: true });
+
+      // Merge source into destination
+      const mergeResponse = await withTimeout(
+        client.mergeUsers({
+          sourceEmail,
+          destinationEmail: destEmail,
+        })
+      );
+
+      expect(mergeResponse.code).toBe("Success");
+    } finally {
+      await cleanupTestUser(client, sourceEmail);
+      await cleanupTestUser(client, destEmail);
+    }
+  });
+
   it("should update user subscriptions by userId", async () => {
     // Ensure user exists with userId
     await withTimeout(

tests/unit/users.test.ts

@@ -10,6 +10,7 @@ import {
 import { IterableClient } from "../../src/client";
 import {
   GetUserByEmailParamsSchema,
+  MergeUsersParamsSchema,
   UpdateEmailParamsSchema,
   UpdateUserParamsSchema,
   UpdateUserSubscriptionsParamsSchema,
@@ -267,6 +268,78 @@ describe("User Management", () => {
     });
   });
 
+  describe("mergeUsers", () => {
+    it("should call merge endpoint with email-based params", async () => {
+      const params = {
+        sourceEmail: "source@example.com",
+        destinationEmail: "dest@example.com",
+      };
+      const mockResponse = { data: { code: "Success", msg: "Merged" } };
+      mockAxiosInstance.post.mockResolvedValue(mockResponse);
+
+      const result = await client.mergeUsers(params);
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith(
+        "/api/users/merge",
+        params
+      );
+      expect(result.code).toBe("Success");
+    });
+
+    it("should call merge endpoint with userId-based params", async () => {
+      const params = {
+        sourceUserId: "src-user-123",
+        destinationUserId: "dst-user-456",
+      };
+      const mockResponse = { data: { code: "Success", msg: "Merged" } };
+      mockAxiosInstance.post.mockResolvedValue(mockResponse);
+
+      const result = await client.mergeUsers(params);
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith(
+        "/api/users/merge",
+        params
+      );
+      expect(result.code).toBe("Success");
+    });
+
+    it("should support mixed email/userId identifiers", async () => {
+      const params = {
+        sourceEmail: "source@example.com",
+        destinationUserId: "dst-user-456",
+      };
+      const mockResponse = { data: { code: "Success", msg: "Merged" } };
+      mockAxiosInstance.post.mockResolvedValue(mockResponse);
+
+      await client.mergeUsers(params);
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith(
+        "/api/users/merge",
+        params
+      );
+    });
+
+    it("should support arrayMerge parameter", async () => {
+      const params = {
+        sourceEmail: "source@example.com",
+        destinationEmail: "dest@example.com",
+        arrayMerge: [
+          { field: "purchaseHistory", dedupeBy: "orderId" },
+          { field: "tags" },
+        ],
+      };
+      const mockResponse = { data: { code: "Success", msg: "Merged" } };
+      mockAxiosInstance.post.mockResolvedValue(mockResponse);
+
+      await client.mergeUsers(params);
+
+      expect(mockAxiosInstance.post).toHaveBeenCalledWith(
+        "/api/users/merge",
+        params
+      );
+    });
+  });
+
   describe("Schema Validation", () => {
     it("should validate get_user_by_email parameters", () => {
       expect(() =>
@@ -369,5 +442,62 @@ describe("User Management", () => {
         })
       ).not.toThrow();
     });
+
+    it("should validate mergeUsers parameters", () => {
+      // Valid: email to email
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceEmail: "source@example.com",
+          destinationEmail: "dest@example.com",
+        })
+      ).not.toThrow();
+
+      // Valid: userId to userId
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceUserId: "src-123",
+          destinationUserId: "dst-456",
+        })
+      ).not.toThrow();
+
+      // Valid: email to userId (mixed)
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceEmail: "source@example.com",
+          destinationUserId: "dst-456",
+        })
+      ).not.toThrow();
+
+      // Valid: with arrayMerge
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceEmail: "source@example.com",
+          destinationEmail: "dest@example.com",
+          arrayMerge: [{ field: "tags" }, { field: "orders", dedupeBy: "id" }],
+        })
+      ).not.toThrow();
+
+      // Invalid: missing source
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          destinationEmail: "dest@example.com",
+        })
+      ).toThrow();
+
+      // Invalid: missing destination
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceEmail: "source@example.com",
+        })
+      ).toThrow();
+
+      // Invalid: bad email format
+      expect(() =>
+        MergeUsersParamsSchema.parse({
+          sourceEmail: "not-an-email",
+          destinationEmail: "dest@example.com",
+        })
+      ).toThrow();
+    });
   });
 });