#!/bin/bash
# Add this to your konsole/.git/hooks/ folder to prevent push if message is not following commit-template
# In your konsole folder type:
# cp ./doc/developer/pre-push ./.git/hooks/pre-push && chmod +x ./.git/hooks/pre-push

# Get the current branch and apply it to a variable
currentbranch=`git branch | grep \* | cut -d ' ' -f2`

# Gets the commits for the current branch and outputs to file
git log $currentbranch --pretty=format:"%H" --not master > shafile.txt

if [ ! -f "./shafile.txt" ]
then
      echo "It is not possible to write temporary files"
      echo "Check Read/Write permissions or remove this"
      echo "pre-push check" 
      exit 1
fi

if [ ! -s "./shafile.txt" ]
then
      # if size is 0 there is no commit
      rm shafile.txt  >/dev/null 2>&1
      exit 0
fi

echo '
====================
Commit Message Check
====================
'

#colors used here
RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m'

passedall=0
# loops through the file an gets the messages
for i in `cat ./shafile.txt`;
do
      passed=0
      # gets the git commit message based on the sha
      git log --format=%B -n 1 "$i" > logfile.txt
      # load this message to an array
      mapfile -t gitmessage < ./logfile.txt

      # commit title
      echo "- ${gitmessage[0]}"

      # analise each line
      for (( nline=0; nline<${#gitmessage[@]}+1; nline++ ));
      do
            line=${gitmessage[$nline]}
            if [ ${#line} -gt 72 ]
            then
                  echo -e "     ${RED}*${NC} You MUST wrap all lines at 72 characters."
                  passed=1
            fi

            if [[ $nline -eq 1 && ${#line} -gt 0 ]]
            then
                  echo -e "     ${RED}*${NC} Follow the Subject with a blank line."
                  passed=1
            fi

            messagecheck=`echo $line | grep -w "BUG\|FEATURE\|FIXED-IN\|CCBUG\|CCMAIL\|GUI\|CHANGELOG"`
            if [ -n "$messagecheck" ]
            then
                  messagecheck=`echo $line | grep ': '`
                  if [ -z "$messagecheck" ]
                  then 
                        echo -e "     ${RED}*${NC} Your commit message has a formatting error."
                        echo "       Type ' ' after field specification"
                        echo "       -> $line"
                        passed=1
                  fi
            fi
      done

      # Check if all passed
      if [ $passed -gt 0 ]
      then
            echo -e "  Commit message ${RED}FAILED${NC}"
            passedall=1
      else
            echo -e "  Commit message ${GREEN}PASSED${NC}"
      fi
      echo ""
done
# remove temporary files
rm shafile.txt  >/dev/null 2>&1
rm logfile.txt  >/dev/null 2>&1
# Test mode remove the next '#' to test it
#exit 1 
# If all passed in the check it will exit 0
exit $passedall