#!/bin/sh

folder="$1"
if [[ -z "${folder// }" ]]
  then folder=".";
fi

echo "Searching through folder \"$folder\" for NotificationCenter observers."
echo ""

# Swift files
nbrSwiftFiles=$(grep -l -r "NotificationCenter\.default\.addObserver(forName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | wc -l | tr -d ' ')
echo "Number Swift files: $nbrSwiftFiles"

# Objective-C files
nbrObjcFiles=$(grep -l -r "\[\[NSNotificationCenter defaultCenter\] addObserverForName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | wc -l | tr -d ' ')
echo "Number Objective-C files: $nbrObjcFiles"

echo ""
echo "  Files without \"removeObserver\" anywhere in the file:"

# Swift files
grep -l -r "NotificationCenter\.default\.addObserver(forName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | xargs grep -L "NotificationCenter\.default\.removeObserver"
# Objective-C files
grep -l -r "\[\[NSNotificationCenter defaultCenter\] addObserverForName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | xargs grep -L "\[\[NSNotificationCenter defaultCenter\] removeObserver"

echo ""
echo "  Files without \"deinit/dealloc\":"

# Swift files
grep -l -r "NotificationCenter\.default\.addObserver(forName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | xargs grep -L "deinit"

# Objective-C files
grep -l -r "\[\[NSNotificationCenter defaultCenter\] addObserverForName" $folder \
  | while read -r filename; do echo ${filename// /\\ } ; done \
  | xargs grep -L "dealloc"