#!/bin/sh
# Make copies of files and folders from a dev site to production site
# requires two arguments, the file or folder name ($1) a destination path ($2)
# the third argument ($3) is optional and specifies a search path to
# look for files/folders in sub directories off the root

#### usage examples ####
# with dest and search path: ./copy.sh fileName.ext path/to/dest/ path/to/search
# with dest only: ./copy.sh folderName path/to/dest
# with current dir: ./copy.sh fileName.ext .

#### variables ####
# log stdout and stderr
LOGFILE=copyFile.log
DATE=`date`
# file or folder name to copy
HANDLE="$1"
# destination is the location to copy files and folders
DEST="$2"
# optional - appends a sub directory path to SRC
SEARCH="$3"
# previous is a backup folder of current production file
PREV="previous"
# short variable for development root
SRC="/path/to/development/root/"
# short variable for production root
PROD="/path/to/production/root/"

#### copy process ####
# change director to the development root
cd $SRC

# test if handle is a file and NOT a directory
isFile=$(find $SRC$SEARCH -type f -name $HANDLE -print0)
if [[ -f $isFile ]]; then

     # test if dest was passed as a "." dot (or the site root directory)
     if [[ $DEST == "." ]] ; then
 
     #split handle string at delimiting dot
     NAME=${HANDLE%.*}
     EXT=${HANDLE#*.}

     # if backup directory previous isn't present in site root, make it
        if [[ ! -d "$PREV" ]]; then
             mkdir $PREV 2>&1 > /dev/null
        fi

   # make a backup of the current production file
      find $PROD -type f -name $HANDLE -print0 | xargs -0 -I '{}' cp '{}' ${SRC}previous/$NAME"_bk."$EXT
 
      #now copy new file from dev to prod
      cp $isFile $PROD
      echo $DATE-"The file "$HANDLE" was copied to root at "$PROD 1>>$LOGFILE

  # else the dest argument is a sub folder of root, line 52
  else
     #split the string string at delimiting dot
     NAME=${HANDLE%.*}
     EXT=${HANDLE#*.}

       # look in dest, if a backup directory isn't present make one
       cd $DEST
           if [[ ! -d "$PREV" ]]; then
                 mkdir $PREV 2>&1 > /dev/null
          fi
       # back to development root directory
       cd -
 
      #### make three copies ####
      # backup the current production file
        find $PROD$SEARCH -type f -name $HANDLE -print0 | xargs -0 -I '{}' cp '{}' ${DEST}previous/$NAME"_bk."$EXT

      # now copy the new file to the dev target mirror dir
        cp $isFile $DEST

      # finally, copy the new file to the production target directory
        cp $isFile $PROD$DEST

      # echo feedback to the log file
        echo $DATE-"The file "$HANDLE" copied to the sub folder: "$DEST 1>>$SRC$LOGFILE

  #close if statement from line 55 and exit script
  fi
  exit

# else if isFile is empty,
elif [[ -z $isFile ]]; then

        # assign path info to isDir
        isDir=$(find $SRC$SEARCH -type d -name $HANDLE)

        # backup the current production folder
        # remember we are working from SRC root, all path info relative to SRC
        find $PROD$SEARCH -type d -name $HANDLE | xargs -I '{}' cp -R '{}' ${DEST}previous/

        # copy new directory to dev target mirror dir
        cp -R $isDir $DEST

        # now make a new or overwrite an old folder at the production site
        cp -R $isDir $PROD$DEST

        # echo feedback to the log file
        echo $DATE-"The folder "$HANDLE" copied to: "$DEST 1>>$SRC$LOGFILE
else
        # if everything else fails, echo feedback to the log file
        echo $DATE-"Error-Nothing copied or created for "$HANDLE 1>>$SRC$LOGFILE
fi