#!/bin/bash

set -e  # Exit if error

# Load configuration
source "$(dirname "$0")/config.sh"

# =============================================================================
# Sync function
# Usage: sync_ftp PREFIX
#   PREFIX = PHONE or CARD (used to get config vars: ${PREFIX}_FTP_USER, etc.)
# =============================================================================
sync_ftp() {
  local PREFIX=$1
  local FTP_USER_var="${PREFIX}_FTP_USER"
  local FTP_PASS_var="${PREFIX}_FTP_PASS"
  local FTP_IP_var="${PREFIX}_FTP_IP"
  local FTP_PORT_var="${PREFIX}_FTP_PORT"
  local DESTINATION_var="${PREFIX}_DESTINATION"
  local LINKS_NAME="${PREFIX}_LINKS"
  
  local FTP_USER="${!FTP_USER_var}"
  local FTP_PASS="${!FTP_PASS_var}"
  local FTP_IP="${!FTP_IP_var}"
  local FTP_PORT="${!FTP_PORT_var}"
  local DESTINATION="${!DESTINATION_var}"

  echo "========================================================="
  echo "Start synchronisation to ${DESTINATION}"
  echo "========================================================="

  # Set permissions
  find "${DESTINATION}" -type f -exec chmod 644 {} \;
  find "${DESTINATION}" -type d -exec chmod 755 {} \;

  # Get links array
  eval "local LINKS=(\"\${$LINKS_NAME[@]}\")"

  # Sync each folder pair
  for ((i=0; i<${#LINKS[@]}; i+=2)); do
    local DISTANT_DIR="${LINKS[i]}"
    local LOCAL_DIR="${LINKS[i+1]}"
    echo "############################## ${DISTANT_DIR} > ${LOCAL_DIR}"
    mkdir -p "${DESTINATION}${LOCAL_DIR}/"

    if lftp ftp://"${FTP_USER}:${FTP_PASS}@${FTP_IP}:${FTP_PORT}" -e "mirror -e -x .thumbnails -x saved \"${DISTANT_DIR}\" \"${DESTINATION}${LOCAL_DIR}\" ; quit" ; then
      echo "Success :)"
    else
      echo 'Failed !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
    fi
  done
}

# =============================================================================
# Run sync for phone and card
# =============================================================================
sync_ftp PHONE
sync_ftp CARD