#!/bin/bash

# setze Variable
# Format <FQDN>,<SSH_KEY_PATH to ssh-private-key(passwordless)>
DEVICES="rb5009.grote.lan,/home/mg/oxidized-selfmade/neu
         hex.grote.lan,/ssh/keys/hex"


GIT_REPO_PATH=/home/mg/oxidized-selfmade # wo soll das Repo angelegt werden
GIT_REPO_BRANCH=master
GIT_USERNAME=oxidized-selfmade
GIT_USER_MAIL=michael.grote@posteo.de
GIT_REPO_REMOTE_NAME=origin
INTERVAL=3600 # in Sekunden

FAILFILE=$(mktemp)


while true ; do
  # Healthcheck
  echo "" > "$FAILFILE"

  # Checks
  if [ -z "$GIT_REPO_PATH" ] ; then
      echo "GIT_REPO_PATH is not set."
      exit 3
  fi
  if [ -z "$INTERVAL" ] ; then
      echo "INTERVAL is not set."
      exit 3
  fi

  if [ -z "$GIT_REPO_BRANCH" ] ; then
      echo "GIT_REPO_BRANCH is not set."
      exit 3
  fi
  if [ -z "$GIT_USERNAME" ] ; then
      echo "GIT_USERNAME is not set."
      exit 3
  fi
  if [ -z "$GIT_USER_MAIL" ] ; then
      echo "GIT_USER_MAIL is not set."
      exit 3
  fi
  if [ -z "$GIT_REPO_REMOTE_NAME" ] ; then
      echo "GIT_REPO_REMOTE_NAME is not set."
      exit 3
  fi
  if [ -z "$DEVICES" ] ; then
      echo "DEVICES is not set."
      exit 3
  fi

  git config --global user.email "$GIT_USER_MAIL"
  git config --global user.name "$GIT_USERNAME"

  if [ -d "$GIT_REPO_PATH" ] ; then
    cd "$GIT_REPO_PATH"
    if [ -d ".git" ] ; then
      git pull "$GIT_REPO_REMOTE_NAME" "$GIT_REPO_BRANCH" --quiet
    else
      echo "Error: The directory exists but is not a Git repository"
      exit 1
    fi
  else
    git clone "$GIT_REPO_URL" "$GIT_REPO_PATH" --quiet
  fi

  # Save the current value of IFS to restore later
  OLD_IFS=$IFS

  # Set the IFS to a comma to split the values
  IFS=','

  while read -r FQDN SSH_KEY_PATH; do
    # bereinige FQDN
    FQDN=$(echo "$FQDN" | tr -d "[:space:]")
    # prüfe ob Key existiert
    if [ ! -e "$SSH_KEY_PATH" ] ; then
      echo "Error: File $SSH_KEY_PATH does not exist"
      echo "Error: can not export $FQDN config"
      exit 2
    fi
    echo "export $FQDN config"
    ssh -n -i "$SSH_KEY_PATH" "$FQDN" "/export show-sensitive" > "config_${FQDN}.rsc"
    # entferne Datumszeile
    sed -i -r '/^# [0-9]{4}-[0-9]{2}-[0-9]{2}\s[0-9]{2}\:[0-9]{2}\:[0-9]{2}\sby\sRouterOS\s[0-9\s\.]+/d' "config_${FQDN}.rsc"
    git add "config_${FQDN}.rsc"
    git commit -m "update config_${FQDN}" --quiet
  done <<< "$DEVICES"

  git push

  # Restore the original IFS value
  IFS=$OLD_IFS

  # loop
  sleep "$INTERVAL"

done

# test mitvolume
# ohne volume wg git clone
# healtcheck mit letzue exit code

# beschrieben wie keys abgelegt werden müssen
# hadolint