Create app.js

apps/pinsafe/app.js

@@ -0,0 +1,162 @@
+var Layout = require("Layout");
+var key = "";
+var myTimeout;
+var pins = Object.assign(require('Storage').readJSON("pinsafe.json", true) || {});
+print (pins);
+
+function mainMenu() {
+  if (myTimeout) clearTimeout(myTimeout);
+  var menu = {
+    "" : {title : "Decode:"},
+    "< Back" : Bangle.load
+  };
+  if (Object.keys(pins).length==0) Object.assign(menu, {"NO CARDS":""});
+  else for (let c in pins) {
+    let pin=pins[c];
+    menu[c]=()=>{decode(pin);};
+  }
+  Object.assign(menu, {"Add Card": addCard});
+  Object.assign(menu, {"Remove Card":removeCard});
+  E.showMenu(menu);
+}
+function decode(pin) {
+  showNumpad("Key:", function() {
+    if (key.length==0) mainMenu(); 
+    else {
+      var pinDecrypted="";
+      for (let n=0;n<pin.length;n++) {
+        pinDecrypted+=(10+Number(pin[n])-Number(key[n%key.length]))%10;
+      }
+      var showPin = new Layout ({
+        type:"v", c: [
+          {type:"txt", font:"30%", pad:1, fillx:1, filly:1, label:"PIN:"},
+          {type:"txt", font:100/pinDecrypted.length+"%", pad:1, fillx:1, filly:1, label: pinDecrypted},
+          {type:"btn", font:"30%", pad:1, fillx:1, filly:1, label:"OK", cb:l=>{mainMenu();}}
+        ], lazy:true});
+      g.clear();
+      showPin.render();
+      myTimeout = setTimeout(Bangle.load, 10000);
+    }
+  });
+}
+function showNumpad(text, callback) {
+  E.showMenu();
+  key="";
+  function addDigit(digit) {
+    key+=digit;
+    Bangle.buzz(20);
+    update();
+  }
+  function update() {
+    numPad.clear(numPad.output);
+    numPad.output.label="Key:"+key;
+    numPad.render(numPad.output);
+  }
+  var numPad = new Layout ({
+      type:"v", c: [{
+        type:"v", width:180, c: [
+          {type:"txt", font:"15%", pad:1, fillx:1, filly:1, id: "output", label:text+key},
+          {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"7", cb:l=>{addDigit("7");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"8", cb:l=>{addDigit("8");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"9", cb:l=>{addDigit("9");}}
+          ]},
+        {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"4", cb:l=>{addDigit("4");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"5", cb:l=>{addDigit("5");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"6", cb:l=>{addDigit("6");}}
+          ]},
+          {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"1", cb:l=>{addDigit("1");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"2", cb:l=>{addDigit("2");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:"3", cb:l=>{addDigit("3");}}
+          ]},
+          {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:" 0 ", cb:l=>{addDigit("0");}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label:" C ", cb:l=>{key=key.slice(0,-1); update();}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, id:"OK", label:" OK", cb:callback}
+          ]}
+        ]}
+      ], lazy:true});
+  g.clear();
+  numPad.render();  
+}
+
+function removeCard() {
+  var menu = {
+    "" : {title : "select card"},
+    "< Back" : mainMenu
+  };
+  if (Object.keys(pins).length==0) Object.assign(menu, {"NO CARDS":""});
+  else for (let c in pins) {
+    let card=c;
+    menu[c]=()=>{
+      E.showMenu();
+      var confirmRemove = new Layout (
+        {type:"v", c: [
+          {type:"txt", font:"15%", pad:1, fillx:1, filly:1, label:"Delete"},
+          {type:"txt", font:"15%", pad:1, fillx:1, filly:1, label:card+"?"},
+          {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label: "YES", cb:l=>{delete pins[card];mainMenu();}},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label: "NO", cb:l=>{mainMenu();}}
+          ]}
+        ], lazy:true});
+      g.clear();
+      confirmRemove.render();
+    };
+  }
+  E.showMenu(menu);
+}
+function addCard() {
+  var help = new Layout({
+    type:"v", c: [
+      {type:"btn", font:"8%", label:"Enter a name, PIN\nand key for your\ncard. The pin will\nbe stored on your\ndevice in encrypted\nform.", cb:l=>{
+        require("textinput").input({text:""}).then(result => {
+          if (pins[result]!=undefined) {
+            E.showMenu();
+            var alreadyExists = new Layout (
+              {type:"v", c: [
+                {type:"txt", font:Math.min(15,100/result.length)+"%", pad:1, fillx:1, filly:1, label:result},
+                {type:"txt", font:"12%", pad:1, fillx:1, filly:1, label:"already exists."},
+                {type:"h", c: [
+                  {type:"btn", font:"10%", pad:1, fillx:1, filly:1, label: "REPLACE", cb:l=>{encodeCard(result);}},
+                  {type:"btn", font:"10%", pad:1, fillx:1, filly:1, label: "CANCEL", cb:l=>{mainMenu();}}
+                ]}
+              ], lazy:true});
+            g.clear();
+            alreadyExists.render();
+          } else 
+            encodeCard(result);
+        });
+      }}
+    ]
+  });
+  g.clear();
+  help.render();
+}
+
+function encodeCard(name) {
+  showNumpad("PIN:", function() {
+    if (key.length==0) mainMenu();
+    else {
+      var pin=key;
+      showNumpad("Key:", function() {
+        if (key.length==0) mainMenu(); 
+        else {
+          var pinEncrypted="";
+          for (let n=0;n<pin.length;n++) {
+            a=(10+Number(pin[n])+Number(key[n%key.length]))%10;
+            pinEncrypted+=a;
+          }
+          pins[name]=pinEncrypted;
+          require('Storage').writeJSON("pinsafe.json", pins);
+          mainMenu();
+        }
+      });
+    }
+  });
+}
+g.reset();
+g.clear();
+Bangle.setUI();
+mainMenu();