initial commit

Plugins/BTCPayServer.Plugins.NFC/Resources/js/lnurlwnfc.js

@@ -0,0 +1,80 @@
+Vue.component("LNURLWithdrawContactless", {
+    data: function () {
+        return {
+            supported: ('NDEFReader' in window && window.self === window.top),
+            scanning: false,
+            submitting: false,
+            readerAbortController: null,
+        }
+    },
+    methods: {
+        startScan: async function () {
+            try {
+                if (this.scanning || this.submitting) {
+                    return;
+                }
+                const self = this;
+                self.submitting = false;
+                self.scanning = true;
+                if (!this.supported) {
+                    const result = prompt("enter lnurl withdraw");
+                    if (result) {
+                        self.sendData.bind(self)(result);
+                        return;
+                    }
+                    self.scanning = false;
+                }
+                ndef = new NDEFReader()
+                self.readerAbortController = new AbortController()
+                await ndef.scan({signal: self.readerAbortController.signal})
+
+                ndef.addEventListener('readingerror', () => {
+                    self.scanning = false;
+                    self.readerAbortController.abort()
+                })
+
+                ndef.addEventListener('reading', ({message, serialNumber}) => {
+                    //Decode NDEF data from tag
+                    const record = message.records[0]
+                    const textDecoder = new TextDecoder('utf-8')
+                    const lnurl = textDecoder.decode(record.data)
+
+                    //User feedback, show loader icon
+                    self.scanning = false;
+                    self.sendData.bind(self)(lnurl);
+
+                })
+            } catch(e) {
+                self.scanning = false;
+                self.submitting = false;
+            }
+        },
+        sendData: function (lnurl) {
+
+            this.submitting = true;
+            //Post LNURLW data to server
+            var xhr = new XMLHttpRequest()
+            xhr.open('POST', window.lnurlWithdrawSubmitUrl, true)
+            xhr.setRequestHeader('Content-Type', 'application/json')
+            xhr.send(JSON.stringify({lnurl, destination: this.$parent.srvModel.btcAddress}))
+            const self = this;
+            //User feedback, reset on failure
+            xhr.onload = function () {
+                if (xhr.readyState === xhr.DONE) {
+                    console.log(xhr.response);
+                    console.log(xhr.responseText);
+                    self.scanning = false;
+                    self.submitting = false;
+
+                    if(self.readerAbortController) {
+                        self.readerAbortController.abort()
+                    }
+
+                    if(xhr.response){
+                        alert(xhr.response)
+                    }
+                }
+            }
+        }
+    }
+});