#!/bin/ksh

### This is for reading File Watcher config file and SCP the files to certain server
# >> Author: Saps
# >> Dated: 09-FEB-2016
# >> Version: 0.1
#

##Variables
CONFIG_PATH=/path/to/config/file
CONFIG_FILE=gen.FileWatcher.config
FILES_TO_MONITOR=app.outFile.FileWatcher.properties
CURR_HOST_NM=`uname -n`
 . $CONFIG_PATH/$CONFIG_FILE 2>/dev/null
sleepAppTime=$appt
sleepFWTime=$fwt
sleepSCPTime=$scpt
PROD_HOST=$p1h
UAT_HOST=$u1h
SCP_USER_NM=$scpuser
DEST_PATH=$dfpath
SCP_HOST=$scph
compFilePath=$ifpath
vDate=`date +%d%m%y%H%M`
# endFileSize=0

###### FUNCTION CREATION ################
function fileWatcherConcept
{
  echo "[INFO - `date`] Starting file watcher process..."
  sleep $sleepFWTime
  while true
  do
    filePath=$ofpath
    echo "[INFO - `date`] File path is: $filePath"
    for fileName in $(cat $CONFIG_PATH/$FILES_TO_MONITOR)
    do
      echo "[INFO - `date`] Watching file: $fileName"
      if [ ! -s $filePath/$fileName ]
      then
        echo "[INFO - `date`] The file: $filePath/$fileName is not arrived yet... will check after $sleepFWTime secs."
        sleep $sleepFWTime
      else
        echo "[INFO - `date`] File arrival is in progress..."
        sleep $sleepAppTime
        startFileSize=`ls -l $filePath/$fileName|awk '{print $5}'`
        echo "[DEBUG - `date`] File Size of $fileName on arrival: $startFileSize"
        echo "[INFO - `date`] SCP not completed yet... will check after $sleepSCPTime secs. "
        sleep $sleepSCPTime
        endFileSize=`ls -l $filePath/$fileName|awk '{print $5}'`
        echo "[DEBUG - `date`] File Size of $fileName after $sleepSCPTime secs: $endFileSize"
        if [ $startFileSize -eq $endFileSize ]
        then
          echo "[INFO - `date`] << FILE SIZE >> matches: $endFileSize is final size."
          echo "[INFO - `date`] The file: $filePath/$fileName has arrived... "
          echo "[INFO - `date`] Initializing file transfer via SCP process..."
          # SCP script / command goes here. also used scp errorCode is 0 or not
          echo "[INFO - `date`] SCP Command in execution is: /usr/local/bin/scp -B -q $filePath/$fileName $SCP_USER_NM@$SCP_HOST:$DEST_PATH/$fileName"
          /usr/local/bin/scp -B -q $filePath/$fileName $SCP_USER_NM@$SCP_HOST:$DEST_PATH/$fileName
          # scpErrCode=0 #<-- for debug
          scpErrCode=$?
          if [ $scpErrCode -ne 0 ]
          then
            echo "[DEBUG - `date`] Error in SCP. Error Code: $scpErrCode"
          else
            echo "[INFO - `date`] SCP completed successfully..."
            echo "[INFO - `date`] Sending SCP Completion Flag..." 
            echo "[INFO - `date`] SCP Command in execution for .comp file is: /usr/local/bin/scp -B -q $compFilePath/$fileName.comp $SCP_USER_NM@$SCP_HOST:$DEST_PATH/$fileName.comp"
            /usr/local/bin/scp -B -q $compFilePath/$fileName.comp $SCP_USER_NM@$SCP_HOST:$DEST_PATH/$fileName.comp
            sleep $sleepAppTime
            # mv command to move files from out to archive dir with timestamp
            mv $filePath/$fileName $filePath/$fileName.ARCHIVE
            echo "[INFO - `date`] file has moved to archive folder."
          fi
        else
          continue;
        fi
        sleep $sleepFWTime
      fi
    done
  done
}


#### MAIN ######

if [ "$CURR_HOST_NM" != "$PROD_HOST" ]
then
  echo "[INFO - `date`] Current host is $CURR_HOST_NM"
  echo "[INFO - `date`] Loading UAT configuration..."
  ## function goes here
  # echo "function call for UAT" #<-- for debug purpose
  sleep $sleepAppTime
  fileWatcherConcept
elif [ "$CURR_HOST_NM" != "$UAT_HOST" ]
then
  echo "[INFO - `date`] Current host is $CURR_HOST_NM"
  echo "[INFO - `date`] Loading PROD configuration..."
  ## function goes here
  # echo "function call for PROD" #<-- for debug purpose
  sleep $sleepAppTime
  fileWatcherConcept
else
  echo "[ERROR - `date`] Either the server: $CURR_HOST_NM or the configuration is incorrect. Exiting..."
  exit 1
fi

# END of FW Script

# This is file watcher config file for application out-directory
#

::server::
u1h=uat.server
p1h=prod.server

::scpHost::
scpuh=uat.server
scpph=prod.server

::userIDs::
scpuser=scpUserNM

::appIDs:: #<-- this area just added, if any concept can be implemented using application IDs
app1=xyz
app2=abc

::filesPath::
ofpath=/outgoing/file/path/out/dir
ifpath=/incoming/file/path/in/dir
dfpath=/scp/destination/file/path/xyz_out
# dfpath1=/scp/destination/file/path/xyz_out #<-- if any concept can be implemented
# dfpath2=/scp/destination/file/path/abc_out #<-- if any concept can be implemented

::sleepTimes::
appt=3
fwt=5
scpt=10

file_name_1.DAT
file_name_2.DAT
file_name_3.DAT
file_name_4.DAT