#!/bin/sh

# post-merge hook for Sketch files Git tracking

# Set UTF-8 encoding
export LANG=UTF-8
# Needed to work in SourceTree
export PATH=/usr/local/bin:$PATH

# Git repository absolute path
git_root=`git rev-parse --show-toplevel`
# Unzipped Sketch files path
unzipped_directory_name="_unzipped"
unzipped_root="$git_root/$unzipped_directory_name"
# Local backups directory path
backup_root="$git_root/_backup"

for unzipped_directory in $(find "$unzipped_directory_name" -type d | grep ".sketch$")
do

  # Sketch file path
  sketch=`echo "$git_root/$unzipped_directory" | sed "s/$unzipped_directory_name\///"`
  # Sketch file directory path
  sketch_directory=`dirname "$sketch"`

  echo "Processing '`basename $sketch`'."

  if mkdir -p "$sketch_directory"
  then

    # Backup existing Sketch file
    backup_path=`echo "$backup_root/$(date +"%Y-%m-%d-%H-%M-%S")/$unzipped_directory" | sed "s/$unzipped_directory_name\///"`
    mkdir -p "`dirname $backup_path`"
    mv "$sketch" "$backup_path"

    # Zip the directory to recreate the Sketch file
    cd "$unzipped_directory"
    if zip -rq "$sketch" *
    then
      echo "  '`basename $sketch`' Sketch file generated."
    else
      echo "  Couldn't generate '`basename $sketch`' Sketch file."
      exit 1
    fi
    cd "$git_root"
  else
    echo "  Couldn't create '$sketch_directory' directory."
    exit 1
  fi

done