#!/bin/bash

PREVIOUS_HEAD=$1
NEW_HEAD=$2
BRANCH_SWITCH=$3

if [[ $BRANCH_SWITCH == "1" && $PREVIOUS_HEAD != $NEW_HEAD ]]; then

  # Kill the simulator.
  SIM=`pgrep 'iPhone Simulator'`
  if [[ "'$SIM'" != "" ]]; then
    osascript -e 'tell application "iPhone Simulator" to quit'
  fi

  XCODE=`pgrep 'Xcode'`
  if [[ "'$XCODE'" != "" ]]; then
    WORKSPACE=`osascript -e 'tell application "Xcode" to get name of active workspace document' 2> /dev/null`
    osascript -e 'tell application "Xcode" to close active workspace document'
  fi

  # Check if pods need to be installed.
  diff "Podfile.lock" "Pods/Manifest.lock" > /dev/null 2>&1
  if [[ $? != 0 ]]; then
    echo "Pods are out of sync. Installing pods..."
    pod install
    if [[ $? -eq 0 ]]; then
      echo "Pods are now up to date."
    fi
  else
     echo "Pods are already up to date."
  fi

  if [[ "$WORKSPACE" == *xcworkspace ]]; then
    open $WORKSPACE
  fi
fi