update rasterization endpoint to accept resolution query paremeter fo…

…r high res

src/assets/doc_output.json

@@ -154,6 +154,16 @@
             },
             "type": "string",
             "description": "Labelhash(v1) /Namehash(v2) of your ENS name.\n\nMore: https://docs.ens.domains/contract-api-reference/name-processing#hashing-names"
+          },
+          {
+            "name": "res",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "$ref": "#/components/schemas/res"
+            },
+            "type": "string",
+            "description": "Resolution option for the rasterization. Available options: low (default) | high"
           }
         ],
         "responses": {
@@ -405,6 +415,10 @@
                 "type": "string",
                 "example": "Token ID of NFT"
               },
+              "res": {
+                "type": "string",
+                "example": "Resolution query parameter for rasterization"
+              },
               "reference_url": {
                 "type": "string",
                 "example": "Marketplace URL of NFT"
@@ -526,6 +540,13 @@
           "name": "tokenId"
         }
       },
+      "res": {
+        "type": "string",
+        "example": "high",
+        "xml": {
+          "name": "res"
+        }
+      },
       "networkName": {
         "description": "Name of the chain to query for.",
         "type": "string",

src/controller/ensRasterize.ts

@@ -8,8 +8,10 @@ export async function ensRasterize(req: Request, res: Response) {
   // #swagger.parameters['{}'] = { name: 'contractAddress', description: 'Contract address which stores the NFT indicated by the tokenId', schema: { $ref: '#/definitions/contractAddress' } }
   // #swagger.parameters['tokenId'] = { type: 'string', description: 'Labelhash(v1) /Namehash(v2) of your ENS name.\n\nMore: https://docs.ens.domains/contract-api-reference/name-processing#hashing-names', schema: { $ref: '#/definitions/tokenId' } }
   const { contractAddress, networkName, tokenId } = req.params;
+  // limit resolution param to static options
+  const resolution = req.query.res === 'high' ? 'high' : 'low';
   try {
-    const raster = await rasterize(contractAddress, networkName, tokenId);
+    const raster = await rasterize(contractAddress, networkName, tokenId, resolution);
     const base64 = raster.replace('data:image/png;base64,', '');
     const buffer = Buffer.from(base64, 'base64');
     /* #swagger.responses[200] = { 

src/service/rasterize.ts

@@ -3,16 +3,19 @@ import { GoogleAuth } from 'google-auth-library';
 const auth = new GoogleAuth();
 const grRasterize = 'https://us-central1-ens-metadata-service.cloudfunctions.net/rasterize'
 
+type Resolution = 'low' | 'high';
+
 export function rasterize(
   contractAddress: string,
   networkName: string,
-  tokenId: string
+  tokenId: string,
+  resolution: Resolution
 ): Promise<string> {
   return new Promise(async (resolve, reject) => {
     const client = await auth.getIdTokenClient(grRasterize);
     client
       .request({
-        url: grRasterize,
+        url: `${grRasterize}?res=${resolution}`,
         method: 'POST',
         responseType: 'arraybuffer',
         data: {