#!/bin/bash

ECHO=echo
RUBY=$(which ruby)
RUBY_OPTS="-c"
ERB=$(which erb)
ERB_OPTS="-x -T"
PUPPET=$(which puppet)
PUPPET_OPTS="parser validate"
PUPPET_LINT=$(which puppet-lint)

function determine_type {
  [ -d "$1" ] && return 0
  ext=$( echo $1 |awk -F. '{ print $NF }' )
  case $ext in
    pp) # need a better way to check for a manifest
      manifest_syntax $1
      lint_check $1
    ;;
    erb) # assume it's an erb if it's not a manifest
      erb_syntax $1
    ;;
    rb) # a bit of ruby
      ruby_syntax $1
    ;;
    *)
      ${ECHO} "$1 is something I don't recognize... skipping"
    ;;
  esac
  
}

function manifest_syntax {
  ${ECHO} -en "Checking manifest\t$1: "
  ${PUPPET} ${PUPPET_OPTS} $1 && ${ECHO} "Syntax OK"
}

function lint_check {
  ${ECHO} -en "Checking best practices\t$1: "
  ${PUPPET_LINT} $1 && ${ECHO} "Syntax OK"
}

function erb_syntax {
  ${ECHO} -en "Checking erb\t\t$1: "
  ${ERB} ${ERB_OPTS} '-' $1 | ${RUBY} ${RUBY_OPTS}
}

function ruby_syntax {
  ${ECHO} -en "Checking ruby\t\t$1: "
  ${RUBY} -rpuppet $1 && ${ECHO} "Syntax OK"
}

function notify {
  if [ -z "$QUIET" ]; then
    return
  else
    echo $1
  fi
}

if [ -z "$*" ]; then
  START=.  #current directory
  notify "No files or directories specified, checking $START"
else
  START=$*
fi

# loop through objects given on commandline 
for object in $(git diff HEAD  --name-only); do
  if [ -d "$object" ]; then
    for file in $( find ${object} -not \( -name .git -prune \) -and -not \( -name .svn -prune \) -and -not \( -name CVS -prune \) ); do
      determine_type $file
    done
  elif [ -f "$object" ]; then
    determine_type $object
  fi
done