#!/bin/bash

set -u

# Seconds since epoch for current time
DATE_NOW=$(date +%s)
DEST="${MINIO_PATH%/}/"

/scripts/minio_uploader.sh list "$DEST" | grep "sqlite_" | while read -r LINE
do
  # `rclone ls` prints "<size> <path>"
  BACKUP_FILENAME=$(echo "$LINE" | awk '{ print $2 }')

  BACKUP_DATE=$(echo "$BACKUP_FILENAME" | awk 'BEGIN { FS = "[_-]" } ; { printf "%s-%s-%s",$2,$3,$4 }')

  if [[ $BACKUP_DATE =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}$ ]]
  then
    BACKUP_DATE_SECS=$(date -d "$BACKUP_DATE" +%s)

    DAYS_DIFF=$(( (DATE_NOW - BACKUP_DATE_SECS) / (60*60*24) ))

    if [ "$DAYS_DIFF" -gt "$DELETE_AFTER" ]
    then
      echo "File $BACKUP_FILENAME is $DAYS_DIFF days old (greater than $DELETE_AFTER days). Deleting it."
      /scripts/minio_uploader.sh delete "${DEST}${BACKUP_FILENAME}"
    fi
  fi
done