add binary function to get statements (#182)

* add binary function to get statements

* fix

Author: unit-shahaf

resources/baseResource.ts

@@ -1,4 +1,4 @@
-import axiosStatic, { AxiosInstance, AxiosRequestHeaders } from "axios"
+import axiosStatic, {AxiosInstance, AxiosRequestConfig, AxiosRequestHeaders, responseEncoding} from "axios"
 import { extractUnitError, UnitConfig } from "../types/common"
 
 export class BaseResource {
@@ -18,12 +18,13 @@ export class BaseResource {
         this.axios = config?.axios ?? axiosStatic
     }
 
-    protected async httpGet<T>(path: string, config?: { headers?: object; params?: object; }) : Promise<T> {
+    protected async httpGet<T>(path: string, config?: { headers?: object; params?: object; responseEncoding?: responseEncoding;}) : Promise<T> {
 
         const conf = {
             headers: this.mergeHeaders(config?.headers),
-            ...(config?.params && { params: (config.params)})
-        }
+            ...(config?.params && { params: (config.params)}),
+            ...(config?.responseEncoding && {responseEncoding: config.responseEncoding})
+        } as AxiosRequestConfig
 
         return await this.axios.get<T>(this.resourcePath + path, conf)
             .then(r => r.data)

resources/statements.ts

@@ -27,6 +27,15 @@ export class Statments extends BaseResource {
         const url = isPDF ? `/${statementId}/pdf` : `/${statementId}/html` 
         return this.httpGet<string>(url, {params: parameters})
     }
+
+    public getBinary(statementId: string, customerId?: string, isPDF = false): Promise<string> {
+        const parameters = {
+            ...(customerId && { "filter[customerId]": customerId })
+        }
+
+        const url = isPDF ? `/${statementId}/pdf` : `/${statementId}/html`
+        return this.httpGet<string>(url, {params: parameters, responseEncoding:"binary"})
+    }
 }
 
 export interface StatementsListParams extends BaseListParams {

tests/statements.spec.ts

@@ -1,5 +1,4 @@
 import { Unit } from "../unit"
-
 import dotenv from "dotenv"
 dotenv.config()
 const unit = new Unit(process.env.UNIT_TOKEN || "test", process.env.UNIT_API_URL || "test")