Add more comments in samples

sample_code/checkout_sample.ts

@@ -1,7 +1,8 @@
 import "https://deno.land/[email protected]/dotenv/load.ts";
 import { Client } from "https://deno.land/x/[email protected]/mod.ts";
 
-// Read environment variables
+// First, get your API keys from https://portal.vipps.no/
+// Here we assume they are stored in a .env file, see .env.example
 const clientId = Deno.env.get("CLIENT_ID") || "";
 const clientSecret = Deno.env.get("CLIENT_SECRET") || "";
 
@@ -16,6 +17,7 @@ const client = Client({
   retryRequests: false,
 });
 
+// Create a checkout session
 const checkout = await client.checkout.create(clientId, clientSecret, {
   merchantInfo: {
     callbackUrl: "https://example.com/callbackUrl",
@@ -30,6 +32,7 @@ const checkout = await client.checkout.create(clientId, clientSecret, {
   },
 });
 
+// Check if the checkout session was created successfully
 if (!checkout.ok) {
   console.error("😟 Error creating checkout session 😟");
   console.log(checkout.error);

sample_code/epayment_sample.ts

@@ -2,7 +2,8 @@ import { open } from "https://deno.land/x/[email protected]/index.ts";
 import "https://deno.land/[email protected]/dotenv/load.ts";
 import { Client } from "https://deno.land/x/[email protected]/mod.ts";
 
-// Read environment variables
+// First, get your API keys from https://portal.vipps.no/
+// Here we assume they are stored in a .env file, see .env.example
 const clientId = Deno.env.get("CLIENT_ID") || "";
 const clientSecret = Deno.env.get("CLIENT_SECRET") || "";
 

sample_code/webhook_sample.ts

@@ -1,7 +1,8 @@
 import "https://deno.land/[email protected]/dotenv/load.ts";
 import { Client } from "https://deno.land/x/[email protected]/mod.ts";
 
-// Read environment variables
+// First, get your API keys from https://portal.vipps.no/
+// Here we assume they are stored in a .env file, see .env.example
 const clientId = Deno.env.get("CLIENT_ID") || "";
 const clientSecret = Deno.env.get("CLIENT_SECRET") || "";