#!/bin/bash

# {{ ansible_managed }}

error_exit() {
    printf "%s\n" "$1"
    exit 1
}

MAX_ATTEMPTS=60
REPO=$1

if [ -z "$REPO" ]; then
    error_exit "repo is missing"
fi

RESTIC_ETC_PATH="{{ restic_etc_path }}"
REPO_PATH="${RESTIC_ETC_PATH}/repos/${REPO}"
REPO_ENV="${REPO_PATH}/env.sh"

if [ ! -r "$REPO_ENV" ]; then
    error_exit "${REPO_ENV} does not exist"
fi

. "$REPO_ENV"

KEEP_DAILY=${KEEP_DAILY:-7}
KEEP_WEEKLY=${KEEP_WEEKLY:-5}
KEEP_MONTHLY=${KEEP_MONTHLY:-12}
KEEP_YEARLY=${KEEP_YEARLY:-10}

counter=0
sleep=1
rc=1

until [ $counter -eq $MAX_ATTEMPTS ] || [ $rc -eq 0 ]; do
  {{ restic_path }} forget \
      --quiet \
      --host $(hostname -f) \
      --keep-daily "$KEEP_DAILY" \
      --keep-weekly "$KEEP_WEEKLY" \
      --keep-monthly "$KEEP_MONTHLY" \
      --keep-yearly "$KEEP_YEARLY" \
      --prune

  rc=$?

  if [ $rc -ne 0 ]; then
    sleep=$((counter * 5))
    printf "sleeping for %d seconds (%d)\n" $sleep $counter
    sleep $sleep
  fi

  let counter+=1
done

if [ $rc -ne 0 ] && [ $counter -eq $MAX_ATTEMPTS ]; then
  printf "tidy timed out, exiting\n"
fi