initial commit

admin/services/paypal/paypal-api.js

@@ -0,0 +1,123 @@
+import fetch from "node-fetch";
+
+// set some important variables
+const { CLIENT_ID, APP_SECRET } = process.env;
+const base = "https://api-m.sandbox.paypal.com";  
+
+// call the create order method
+export async function createOrder(data,PaypalClientId,PaypalAppSecret) {  
+  const purchaseAmount = data.price;//"100.00"; // TODO: pull prices from a database 
+  const accessToken = await generateAccessToken(PaypalClientId,PaypalAppSecret);
+  const url = `${base}/v2/checkout/orders`;
+  const response = await fetch(url, {
+    method: "post",
+    headers: {
+      "Content-Type": "application/json",
+      Authorization: `Bearer ${accessToken}`,
+    },
+    body: JSON.stringify({
+      intent: "CAPTURE",
+      purchase_units: [
+        {
+          amount: {
+            currency_code: "USD",
+            value: purchaseAmount,
+          },
+        },
+      ],
+    }),
+  });
+
+  return handleResponse(response);
+}
+
+// capture payment for an order
+export async function capturePayment(orderId,PaypalClientId,PaypalAppSecret) {
+  const accessToken = await generateAccessToken(PaypalClientId,PaypalAppSecret);
+  const url = `${base}/v2/checkout/orders/${orderId}/capture`;
+  const response = await fetch(url, {
+    method: "post",
+    headers: {
+      "Content-Type": "application/json",
+      Authorization: `Bearer ${accessToken}`,
+    },
+  });
+
+  return handleResponse(response);
+}
+
+// generate access token
+export async function generateAccessToken(PaypalClientId,PaypalAppSecret) {
+  console.log(PaypalClientId + ":" + PaypalAppSecret);
+  const auth = Buffer.from(PaypalClientId + ":" + PaypalAppSecret).toString("base64");
+  console.log(auth);
+  const response = await fetch(`${base}/v1/oauth2/token`, {
+    method: "post",
+    body: "grant_type=client_credentials",
+    headers: {
+      Authorization: `Basic ${auth}`,
+    },
+  });
+  const jsonData = await handleResponse(response);
+  return jsonData.access_token;
+}
+
+// generate client token
+export async function generateClientToken(PaypalClientId,PaypalAppSecret) {
+  const accessToken = await generateAccessToken(PaypalClientId,PaypalAppSecret);
+  const response = await fetch(`${base}/v1/identity/generate-token`, {
+    method: "post",
+    headers: {
+      Authorization: `Bearer ${accessToken}`,
+      "Accept-Language": "en_US",
+      "Content-Type": "application/json",
+    },
+  });
+  console.log('response', response.status)
+  const jsonData = await handleResponse(response);
+  return jsonData.client_token;
+}
+
+async function handleResponse(response) {
+  if (response.status === 200 || response.status === 201) {
+    return response.json();
+  }
+
+  const errorMessage = await response.text();
+  throw new Error(errorMessage);
+}
+
+
+// capture payment for an order
+export async function refundPayment(orderId) { 
+  const accessToken = await generateAccessToken();
+  const url = `${base}/v2/payments/captures/${capture_id}/refund`;
+  const response = await fetch(url, {
+    method: "post",
+    headers: {
+      "Content-Type": "application/json",
+      "Authorization": `Bearer ${accessToken}`,
+      'PayPal-Request-Id': '123e4567-e89b-12d3-a456-426655440020',
+      'Prefer': 'return=representation'
+    },
+    body: JSON.stringify(
+      { 
+        "amount": { "value": "10.00", "currency_code": "USD" }, 
+        "invoice_id": "INVOICE-123", 
+        "note_to_payer": "DefectiveProduct", 
+        "payment_instruction": { 
+            "platform_fees": [ 
+              { 
+                "amount": { 
+                  "currency_code": "USD", 
+                  "value": "1.00" 
+                } 
+              } 
+            ] 
+        } 
+      })
+  });
+
+  return handleResponse(response);
+}
+