From c8e45de27da7d3644136ba478bd8f315b464cb02 Mon Sep 17 00:00:00 2001
From: callebtc <93376500+callebtc@users.noreply.github.com>
Date: Sun, 28 Aug 2022 20:37:45 +0200
Subject: [PATCH] invoices

---
 internal/api/userpage/static/webapp.html | 51 ++++++++++++++++++------
 internal/lnurl/lnurl.go                  |  2 +-
 internal/telegram/buttons.go             |  1 +
 3 files changed, 41 insertions(+), 13 deletions(-)

diff --git a/internal/api/userpage/static/webapp.html b/internal/api/userpage/static/webapp.html
index 00bbe57..dc10acf 100644
--- a/internal/api/userpage/static/webapp.html
+++ b/internal/api/userpage/static/webapp.html
@@ -62,10 +62,11 @@
             font-size: 14px;
             text-align: center; 
             padding: 12px 20px;
+            margin: 15px 0;
             border: none;
             border-radius: 4px;
-            background-color: var(--tg-theme-button-color, #f5f5f5);
-            color: var(--tg-theme-button-text-color, #1a1a1a);
+            background-color: var(--tg-theme-secondary-bg-color, #f5f5f5);
+            color: var(--tg-theme-text-color, #1a1a1a);
         }
 
         section {
@@ -213,8 +214,10 @@
 
         .wrapper {
         display: grid;
-        grid-template-columns: 1fr 1fr;
+        grid-template-columns: 3fr 2fr;
         padding: 12px 20px;
+        column-gap: 10px;
+        row-gap: 1em;
         }
     </style>
 </head>
@@ -233,10 +236,10 @@
         <!-- <button onclick="webviewClose();">Close</button> -->
         <div class="wrapper">
             <div>
-                <input type="number" id="invoiceAmount" placeholder="1000 sat"></input>
+                <input type="number" id="invoiceAmount" placeholder="amount in sat" style="width: 80%"></input>
             </div>
             <div>
-                <button onclick="getInvoice(this, {{.Callback}});" style="display: inline; margin: 0px;">Invoice</button>
+                <button onclick="getInvoice(this, {{.Callback}});" style="display: inline;" id="requestInvoice">Invoice</button>
             </div>
         </div>
     </div>
@@ -246,7 +249,7 @@
     Telegram.WebApp.ready();
 
     // render the LNURL pay QR code
-    var s = {{.LNURLPay}};
+    var s = "{{.LNURLPay}}";
     renderQr(s);
     
     // data passed form telegram server
@@ -258,11 +261,30 @@
     // document.querySelector('#initDataUnsafe').innerHTML = JSON.stringify(initDataUnsafe, null, 2);
 
     // react to theme changes
-    document.querySelector('#themeData').html(JSON.stringify(Telegram.WebApp.themeParams, null, 2));
-    Telegram.WebApp.onEvent('themeChanged', function() {
-        document.querySelector('#themeData').innerHTML = JSON.stringify(Telegram.WebApp.themeParams, null, 2);
+    try {
+        document.querySelector('#themeData').html(JSON.stringify(Telegram.WebApp.themeParams, null, 2));
+        Telegram.WebApp.onEvent('themeChanged', function() {
+            document.querySelector('#themeData').innerHTML = JSON.stringify(Telegram.WebApp.themeParams, null, 2);
+        });
+    } catch (error) {
+        console.error(error);
+    }
+
+
+
+
+    // listen for enter in input field
+    var el = document.getElementById("invoiceAmount");
+    console.log("Element:" + el)
+    el.addEventListener("keydown", function(event) {
+        if (event.key === "Enter") {
+            document.getElementById("requestInvoice").click();
+        }
+        document.getElementById("requestInvoice").innerHTML = "Invoice"
     });
 
+    // ------------------ functions ------------------
+
     function webviewClose() {
         Telegram.WebApp.close();
     }
@@ -299,9 +321,14 @@
             })
             .then(r => { 
                 console.log(r);
-                // update qr code
-                renderQr(r.pr);
-                document.querySelector('#greeting').innerHTML = "Pay " + invoiceAmount + " sat"
+                if (r.status == "OK"){
+                    // update qr code
+                    renderQr(r.pr);
+                    document.querySelector('#greeting').innerHTML = "Pay " + invoiceAmount + " sat";
+                } else {
+                    document.getElementById("requestInvoice").innerHTML = "Error"
+                }
+
             })
         })
     }
diff --git a/internal/lnurl/lnurl.go b/internal/lnurl/lnurl.go
index 9d3443d..42a2510 100644
--- a/internal/lnurl/lnurl.go
+++ b/internal/lnurl/lnurl.go
@@ -184,7 +184,7 @@ func (w Lnurl) serveLNURLpSecond(username string, amount_msat int64, comment str
 		return &lnurl.LNURLPayValues{
 			LNURLResponse: lnurl.LNURLResponse{
 				Status: api.StatusError,
-				Reason: fmt.Sprintf("Amount out of bounds (min: %d mSat, max: %d mSat).", MinSendable, MinSendable)},
+				Reason: fmt.Sprintf("Amount out of bounds (min: %d sat, max: %d sat).", MinSendable/1000, MaxSendable/1000)},
 		}, fmt.Errorf("amount out of bounds")
 	}
 	// check comment length
diff --git a/internal/telegram/buttons.go b/internal/telegram/buttons.go
index f16a6e3..88deb71 100644
--- a/internal/telegram/buttons.go
+++ b/internal/telegram/buttons.go
@@ -76,6 +76,7 @@ func (bot *TipBot) appendWebAppLinkToButton(btn *tb.Btn, user *lnbits.User) {
 		// Telegram returns an error and does not show the keyboard
 		btn.WebApp = &tb.WebAppInfo{Url: url}
 	}
+	btn.WebApp = &tb.WebAppInfo{Url: "https://callebtc.github.io/tmp/qr3.html"}
 }
 
 // mainMenuBalanceButtonUpdate updates the balance button in the mainMenu