style fixes and made URLs generic

Author: nicolasgarnier

paypal/functions/index.js

@@ -24,9 +24,9 @@ const admin = require('firebase-admin');
 admin.initializeApp(functions.config().firebase);
 // Configure your environment
 paypal.configure({
-    'mode': 'sandbox', // sandbox or live
-    'client_id': functions.config().paypal.client_id, // run: firebase functions:config:set paypal.client_id="yourPaypalClientID" 
-    'client_secret': functions.config().paypal.client_secret // run: firebase functions:config:set paypal.client_secret="yourPaypalClientSecret"
+  mode: 'sandbox', // sandbox or live
+  client_id: functions.config().paypal.client_id, // run: firebase functions:config:set paypal.client_id="yourPaypalClientID" 
+  client_secret: functions.config().paypal.client_secret // run: firebase functions:config:set paypal.client_secret="yourPaypalClientSecret"
 });
 /**
  * Expected in the body the amount
@@ -38,26 +38,24 @@ exports.pay = functions.https.onRequest((req, res) => {
     const payReq = JSON.stringify({
         intent: 'sale',
         payer: {
-            payment_method: 'paypal'
+          payment_method: 'paypal'
         },
-        // example url https://us-central1-<project-id>.cloudfunctions.net/process
-        // replace return_url, cancel_url
         redirect_urls: {
-            return_url: `https://us-central1-${process.env.GCLOUD_PROJECT}.cloudfunctions.net/process`, // 
-            cancel_url: 'http://localhost:5000/cancel' // replace with your app url
+          return_url: `${req.protocol}://${req.get('host')}/process`,
+          cancel_url: `${req.protocol}://${req.get('host')}/cancel`
         },
         transactions: [{
-            amount: {
-                total: req.body.price,
-                currency: 'USD'
-            },
-            // This is the payment transaction description. Maximum length: 127
-            description: req.body.uid, // req.body.id
-            // reference_id string .Optional. The merchant-provided ID for the purchase unit. Maximum length: 256.
-            // reference_id: req.body.uid,
-            custom: req.body.uid,
-            // soft_descriptor: req.body.uid
-            // "invoice_number": req.body.uid,A
+          amount: {
+            total: req.body.price,
+            currency: 'USD'
+          },
+          // This is the payment transaction description. Maximum length: 127
+          description: req.body.uid, // req.body.id
+          // reference_id string .Optional. The merchant-provided ID for the purchase unit. Maximum length: 256.
+          // reference_id: req.body.uid,
+          custom: req.body.uid,
+          // soft_descriptor: req.body.uid
+          // "invoice_number": req.body.uid,A
         }]
     });
     // 2.Initialize the payment and redirect the user.
@@ -69,10 +67,10 @@ exports.pay = functions.https.onRequest((req, res) => {
         } else {
             // Capture HATEOAS links
             payment.links.forEach((linkObj) => {
-                links[linkObj.rel] = {
-                    href: linkObj.href,
-                    method: linkObj.method
-                };
+              links[linkObj.rel] = {
+                href: linkObj.href,
+                method: linkObj.method
+              };
             });
             // If redirect url present, redirect user
             if (links.hasOwnProperty('approval_url')) {
@@ -90,33 +88,33 @@ exports.pay = functions.https.onRequest((req, res) => {
 
 // 3.Complete the payment. Use the payer and payment IDs provided in the query string following the redirect.
 exports.process = functions.https.onRequest((req, res) => {
-    const paymentId = req.query.paymentId;
-    const payerId = {
-        payer_id: req.query.PayerID
-    };
-    paypal.payment.execute(paymentId, payerId, function (error, payment) {
-        if (error) {
-            console.error(error);
-            res.redirect('http://localhost:5000/error'); // replace with your url page error
-        } else {
-            if (payment.state === 'approved') {
-                console.info('payment completed successfully, description: ', payment.transactions[0].description);
-                // console.info('req.custom: : ', payment.transactions[0].custom);
-                // set paid status to True in RealTime Database
-                const date = Date.now();
-                const uid = payment.transactions[0].description;
-                const ref = admin.database().ref('users/' + uid + '/');
-                ref.push({
-                    'paid': true,
-                    // 'description': description,
-                    'date': date
-                }).then(r => console.info('promise: ', r));
-                res.redirect('http://localhost:5000/success'); // replace with your url, page success
-            } else {
-                console.warn('payment.state: not approved ?');
-                // replace debug url
-                res.redirect(`https://console.firebase.google.com/project/${process.env.GCLOUD_PROJECT}/functions/logs?search=&severity=DEBUG`);
-            }
-        }
-    });
+  const paymentId = req.query.paymentId;
+  const payerId = {
+    payer_id: req.query.PayerID
+  };
+  paypal.payment.execute(paymentId, payerId, (error, payment) => {
+    if (error) {
+      console.error(error);
+      res.redirect(`${req.protocol}://${req.get('host')}/error`); // replace with your url page error
+    } else {
+      if (payment.state === 'approved') {
+        console.info('payment completed successfully, description: ', payment.transactions[0].description);
+        // console.info('req.custom: : ', payment.transactions[0].custom);
+        // set paid status to True in RealTime Database
+        const date = Date.now();
+        const uid = payment.transactions[0].description;
+        const ref = admin.database().ref('users/' + uid + '/');
+        ref.push({
+          'paid': true,
+          // 'description': description,
+          'date': date
+        }).then(r => console.info('promise: ', r));
+        res.redirect(`${req.protocol}://${req.get('host')}/success`); // replace with your url, page success
+      } else {
+        console.warn('payment.state: not approved ?');
+        // replace debug url
+        res.redirect(`https://console.firebase.google.com/project/${process.env.GCLOUD_PROJECT}/functions/logs?search=&severity=DEBUG`);
+      }
+    }
+  });
 });