fix: ignore karma tokens inside code blocks

scripts/karma.js

@@ -156,6 +156,19 @@ module.exports = robot => {
     return tokens.filter(token => urls.reduce((acc, url) => acc && url.indexOf(token) === -1, true))
   }
 
+  // Sometimes we want to use code that contains ++ or --. This function allow us
+  // to find the text that is inside code blocks so we can compare and avoid false positives
+  // in karma assignation.
+  const findTextInsideCodeBlocks = message => {
+    const regex = /`(.*?)`/g
+    let matches = []
+    let match
+    while ((match = regex.exec(message)) !== null) {
+      matches.push(match[0])
+    }
+    return matches
+  }
+
   robot.hear(/([a-zA-Z0-9-_\.]|[^\,\-\s\+$!(){}"'`~%=^:;#°|¡¿?]+?)(\b\+{2}|-{2})([^,]?|\s|$)/g, response => {
     stripRegex = /~!@#$`%^&*()|\=?;:'",<>\{\}/gi
     const tokens = removeURLFromTokens(response.match, response.message.text)
@@ -164,7 +177,13 @@ module.exports = robot => {
       if (!robot.adapter.client.rtm.dataStore.getChannelGroupOrDMById(response.envelope.room).is_channel) return
     }
 
+    const codeBlocks = findTextInsideCodeBlocks(response.message.text)
+
     tokens
+      .filter(token => {
+        // If the token match with a codeBlock it is remove from the karma assignation
+        return codeBlocks.filter(codeBlock => codeBlock.includes(token)).length === 0
+      })
       .slice(0, 5)
       .map(token => {
         const opRegex = /(\+{2}|-{2})/g

test/karma.test.js

@@ -254,6 +254,16 @@ test.cb.serial('Aplica karma solo si es menos a uno mismo', t => {
     t.end()
   }, 500)
 })
+test.cb.serial('No aplicar karma si se pone los ++ o -- como codigo', t => {
+  t.context.room.user.say('user', 'ienc-- y `raerpo++`')
+  setTimeout(() => {
+    t.deepEqual(t.context.room.messages, [
+      ['user', 'ienc-- y `raerpo++`'],
+      ['hubot', 'i.enc ahora tiene -1 puntos de karma.']
+    ])
+    t.end()
+  }, 500)
+})
 test.cb.serial('No Debe aplicar karma', t => {
   t.context.room.user.say('user', 'leon++')
   setTimeout(() => {