#! /usr/bin/env bash

# Shell script shim to let PhpStorm.app (Toolbox) to integrate with Tower.app
#
# Tower.app gives us these parameters:
LOCAL="$1"
REMOTE="$2"

APPLICATION_PATH="/Users/yourusername/Applications/JetBrains Toolbox/PhpStorm.app"
CMD="$APPLICATION_PATH/Contents/MacOS/jetbrains-toolbox-launcher"

# Sanitize LOCAL path
if [[ ! "$LOCAL" =~ ^/ ]]; then
	LOCAL=$(echo "$LOCAL" | sed -e 's/^\.\///')
	LOCAL="$PWD/$LOCAL"
fi

# Sanitize REMOTE path
if [[ ! "$REMOTE" =~ ^/ ]]; then
	REMOTE=$(echo "$REMOTE" | sed -e 's/^\.\///')
	REMOTE="$PWD/$REMOTE"
fi

MERGING="$4"
BACKUP="/tmp/$(date +"%Y%d%m%H%M%S")"

if [ -n "$MERGING" ]; then
  BASE="$3"
  MERGE="$4"

  # Sanitize BASE path
  if [[ ! "$BASE" =~ ^/ ]]; then
    BASE=$(echo "$BASE" | sed -e 's/^\.\///')
    BASE="$PWD/$BASE"

    if [ ! -f "$BASE" ]; then
      BASE=/dev/null
    fi
  fi

  # Sanitize MERGE path
  if [[ ! "$MERGE" =~ ^/ ]]; then
    MERGE=$(echo "$MERGE" | sed -e 's/^\.\///')
    MERGE="$PWD/$MERGE"

    if [ ! -f "$MERGE" ]; then
      # For conflict "Both Added", Git does not pass the merge param correctly in current versions
      MERGE=$(echo "$LOCAL" | sed -e 's/\.LOCAL\.[0-9]*//')
    fi
  fi

  sleep 1 # required to create different modification timestamp
  touch "$BACKUP"
  
  "$CMD" merge "$LOCAL" "$REMOTE" "$BASE" "$MERGE"
else
  "$CMD" diff "$LOCAL" "$REMOTE"
fi

if [ -n "$MERGING" ]; then
  # Check if the merged file has changed
  if [ "$MERGE" -ot "$BACKUP" ]; then
    exit 1
  fi
fi

exit 0