#!/bin/bash

###############
# SCRIPT PREP #
###############

SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
. "${SCRIPT_DIR}"/variables.sh

############################
# LOGGING & ERROR HANDLING #
############################

# Setup for logging
exec 3<&1 4<&2
trap "exec 2<&4 1<&3" 0 1 2 3
exec > >(tee >(ts "%Y-%m-%d_%H:%M:%S" > "${BACKUP_LOG}")) 2>&1
set -eEuo pipefail

# Set logging to debug
if [ $DEBUG = 'yes' ]; then
  set -x
fi

# If script fails, send notification to NTFY
if [ $NTFY_NOTIFICATIONS = 'yes' ]; then
  trap 'err_report' ERR

  function err_report() {
      sleep 5
      curl \
        -T "${BACKUP_LOG}" \
        -H "Filename: backupLog_"${DATETIME}".log" \
        -H prio:high \
        -H "Title: Backup Failed on ${HOSTNAME}" \
        ntfyUser:ntfyPassword@ntfyDomain/ntfyTopic
  }
fi

##################
# BACKUP SCRIPTS #
##################

# If selected, run an rsync backup
if [ $RSYNC_BACKUP = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

# If selected, run a local restic backup
if [ $LOCAL_RESTIC_BACKUP = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

# If selected, run a forget, prune, and check on the local restic repo after a local restic backup
if [ $LOCAL_RESTIC_BACKUP_CLEAN = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

# If selected, run a forget, prune, and check on the local restic repo before a remote restic backup
if [ $REMOTE_RESTIC_BACKUP_CLEAN_LOCAL = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

# If selected, run a remote restic backup
if [ $REMOTE_RESTIC_BACKUP = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

# If selected, run a forget, prune, and check on the remote restic repo after a remote restic backup
if [ $REMOTE_RESTIC_BACKUP_CLEAN = 'yes' ]; then
  . "${SCRIPT_DIR}"/rsync.sh
fi

##############
# TIDYING UP #
##############

# Clean up log files older than log retention days
find "${LOG_DIR}"/*.log -mtime +"${LOG_RETENTION}" -type f -delete

# End of script message in log
echo > >(tee >(echo "$(ts "%Y-%m-%d_%H:%M:%S") Backup Script Complete on ${HOSTNAME}" >> "${BACKUP_LOG}"))

# If script succeeds, send notification to NTFY
if [ $NTFY_NOTIFICATIONS = 'yes' ]; then
  sleep 5
  curl \
    -T "${BACKUP_LOG}" \
    -H "Filename: backupLog_"${DATETIME}".log" \
    -H prio:low \
    -H "Title: Backup Succeeded on ${HOSTNAME}" \
    ntfyUser:ntfyPassword@ntfyDomain/ntfyTopic
fi