Passing auth headers back to dgraph

Author: gja

slash-graphql-lambda-types/types.d.ts

@@ -4,10 +4,16 @@ module "@slash-graphql/lambda-types" {
     errors?: { message: string }[]
   }
 
+  type AuthHeaderField = {
+    key: string | undefined,
+    value: string | undefined
+  }
+
   type GraphQLEventFields = {
     type: string,
     parents: (Record<string, any>)[] | null,
     args: Record<string, any>,
+    authHeader?: AuthHeaderField
   }
 
   type ResolverResponse = any[] | Promise<any>[] | Promise<any[]>;

src/dgraph.ts

@@ -1,10 +1,14 @@
 import fetch from 'node-fetch';
-import { GraphQLResponse } from '@slash-graphql/lambda-types';
+import { GraphQLResponse, AuthHeaderField } from '@slash-graphql/lambda-types';
 
-export async function graphql(query: string, variables: Record<string, any> = {}): Promise<GraphQLResponse> {
+export async function graphql(query: string, variables: Record<string, any> = {}, authHeader: AuthHeaderField): Promise<GraphQLResponse> {
+  const headers: Record<string,string> = { "Content-Type": "application/json" };
+  if(authHeader && authHeader.key && authHeader.value) {
+    headers[authHeader.key] = headers[authHeader.value];
+  }
   const response = await fetch(`${process.env.DGRAPH_URL}/graphql`, {
     method: "POST",
-    headers: { "Content-Type": "application/json" },
+    headers,
     body: JSON.stringify({query, variables})
   })
   if(response.status !== 200) {
@@ -16,7 +20,10 @@ export async function graphql(query: string, variables: Record<string, any> = {}
 export async function dql(query: string, variables: Record<string, any> = {}): Promise<GraphQLResponse> {
   const response = await fetch(`${process.env.DGRAPH_URL}/query`, {
     method: "POST",
-    headers: { "Content-Type": "application/json" },
+    headers: {
+      "Content-Type": "application/json",
+      "X-Auth-Token": process.env.DGRAPH_TOKEN || ""
+    },
     body: JSON.stringify({ query, variables })
   })
   if (response.status !== 200) {