A pre-commit hook for compiling health-tracking JS.

pre-commit

#!/bin/sh
#
# Compile health-tracking javascript if necessary.

if git rev-parse --verify HEAD >/dev/null 2>&1
then
  against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

if test "$(git diff --cached --name-only $against |
  grep public/javascripts/health-tracking)"
then
  if [ $(which node) ]
  then
    echo "Compiling production health-tracking javascript."

    /usr/bin/env node script/r.js -o script/health-tracking.build.js
    /usr/bin/env node script/r.js -o script/health-tracking.mobile-blood-sugar-calendar.build.js
    /usr/bin/env node script/r.js -o script/health-tracking.mobile-hba1c-graph.build.js

    if [ $? -eq 0 ]
    then
      git add public/javascripts/health-tracking.js
      git add public/javascripts/health-tracking-mobile-blood-sugar-calendar.js
      git add public/javascripts/health-tracking-mobile-hba1c-graph.js
    else
      echo "There was an error compiling production health-tracking javascript."
      exit 1
    fi
  else
    "Please install node to compile production health-tracking javascript."
  fi
fi