From ca0af15a1afcbbdb171372b480c72851dae69727 Mon Sep 17 00:00:00 2001
From: Evan Moore <etmoore@gmail.com>
Date: Sat, 26 Mar 2016 20:57:27 -0600
Subject: [PATCH] pass random shift length as second argument

---
 exercises/caeser_cypher/exercise.js          |  8 +++++--
 exercises/caeser_cypher/solution/solution.js | 23 ++++++++++----------
 2 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/exercises/caeser_cypher/exercise.js b/exercises/caeser_cypher/exercise.js
index 4fcbe81..675cebe 100644
--- a/exercises/caeser_cypher/exercise.js
+++ b/exercises/caeser_cypher/exercise.js
@@ -7,6 +7,10 @@ function getRandomIndex(arr) {
   return Math.floor(Math.random() * arr.length)
 }
 
+function getRandomShiftLength() {
+  return Math.floor(Math.random() * (25 - -25 + 1)) + -25
+}
+
 // checks that the submission file actually exists
 exercise = filecheck(exercise)
 
@@ -22,8 +26,8 @@ exercise.addSetup(function(mode, callback){
              "Never eat glue.",
              "Dogs are the best."
             ]
-  var arg = strings[getRandomIndex(strings)]
-  this.submissionArgs = this.solutionArgs = arg
+  var args = [strings[getRandomIndex(strings)], getRandomShiftLength()]
+  this.submissionArgs = this.solutionArgs = args
   process.nextTick(callback)
 })
 
diff --git a/exercises/caeser_cypher/solution/solution.js b/exercises/caeser_cypher/solution/solution.js
index fc5afa7..72a6c01 100644
--- a/exercises/caeser_cypher/solution/solution.js
+++ b/exercises/caeser_cypher/solution/solution.js
@@ -1,28 +1,29 @@
-var arg = process.argv[2];
+var text = process.argv[2]
+var shift = parseInt(process.argv[3])
 
 function caesarCypher(text, shift) {
   if (shift < 0)
-    return caeserShift(str, shift + 26);
+    return caesarCypher(text, shift + 26)
 
-  var output = '';
+  var output = ''
 
   for (var i = 0; i < text.length; i++) {
-    var char = text[i];
+    var char = text[i]
 
     if (char.match(/[a-z]/i)) {
-      var code = text.charCodeAt(i);
+      var code = text.charCodeAt(i)
 
       if ((code >= 65) && (code <= 90)) // Uppercase
-        char = String.fromCharCode(((code - 65 + shift) % 26) + 65);
+        char = String.fromCharCode(((code - 65 + shift) % 26) + 65)
 
       else if ((code >= 97) && (code <= 122)) // Lowercase
-        char = String.fromCharCode(((code - 97 + shift) % 26) + 97);
+        char = String.fromCharCode(((code - 97 + shift) % 26) + 97)
     }
 
-    output += char;
+    output += char
   }
-  return output;
+  return output
 }
 
-var result = caesarCypher(arg, 4);
-console.log(result);
+var result = caesarCypher(text, shift)
+console.log(result)