[Unit]
Description=RClone mount of users remote dropbox using filesystem permissions
Documentation=http://rclone.org/docs/
After=network-online.target


[Service]
Type=notify
#Set up environment
Environment=REMOTE_NAME="dropbox_app"
Environment=REMOTE_PATH="/"
Environment=MOUNT_DIR="/mnt/PLEX"
Environment=POST_MOUNT_SCRIPT=""
Environment=RCLONE_TEMP_DIR="/tmp/rclone/cache"
Environment=RCLONE_RC_ON="false"

#Default arguments for rclone mount. Can be overridden in the environment file
Environment=RCLONE_MOUNT_ATTR_TIMEOUT="5s"
#TODO: figure out default for the following parameter
Environment=RCLONE_MOUNT_DAEMON_TIMEOUT="UNKNOWN_DEFAULT"
Environment=RCLONE_MOUNT_DIR_CACHE_TIME="6h0m0s"
Environment=RCLONE_MOUNT_DIR_PERMS="0777"
Environment=RCLONE_MOUNT_FILE_PERMS="0777"
Environment=RCLONE_MOUNT_GID="998"
Environment=RCLONE_MOUNT_MAX_READ_AHEAD="2G"
Environment=RCLONE_MOUNT_POLL_INTERVAL="2m0s"
Environment=RCLONE_MOUNT_UID="998"
Environment=RCLONE_MOUNT_UMASK="0"
Environment=RCLONE_MOUNT_VFS_CACHE_MAX_AGE="6h0m0s"
Environment=RCLONE_MOUNT_VFS_CACHE_MAX_SIZE="300G"
Environment=RCLONE_MOUNT_VFS_CACHE_MODE="writes"
Environment=RCLONE_MOUNT_VFS_CACHE_POLL_INTERVAL="2m0s"
Environment=RCLONE_MOUNT_VFS_READ_CHUNK_SIZE="128M"
Environment=RCLONE_MOUNT_VFS_READ_CHUNK_SIZE_LIMIT="off"
#TODO: figure out default for the following parameter
Environment=RCLONE_MOUNT_VOLNAME="UNKNOWN_DEFAULT"

#Check that rclone is installed
ExecStartPre=/usr/bin/test -x /usr/bin/rclone

#Check the mount directory
ExecStartPre=/usr/bin/test -d "${MOUNT_DIR}"
ExecStartPre=/usr/bin/test -w "${MOUNT_DIR}"
#TODO: Add test for MOUNT_DIR being empty -> ExecStartPre=/usr/bin/test -z "$(ls -A "${MOUNT_DIR}")"

#Mount rclone fs
ExecStart=/usr/bin/rclone mount \
#See additional items for access control below for information about the following 2 flags
            --allow-other \
#            --default-permissions \
            --rc="${RCLONE_RC_ON}" \
            --cache-tmp-upload-path="${RCLONE_TEMP_DIR}/upload" \
            --cache-chunk-path="${RCLONE_TEMP_DIR}/chunks" \
            --cache-workers=10 \
#            --cache-writes \
            --cache-dir="${RCLONE_TEMP_DIR}/vfs" \
            --cache-db-path="${RCLONE_TEMP_DIR}/db" \
            --no-modtime \
            --bwlimit="500M" \
            --stats=0 \
            --checkers=10 \
            --cache-info-age=60m \
            --attr-timeout="${RCLONE_MOUNT_ATTR_TIMEOUT}" \
            --tpslimit=10 \
            --retries=3 \
            --retries-sleep="30s" \
            --size-only \
            --cache-db-purge \
#TODO: Include this once a proper default value is determined
#           --daemon-timeout="${RCLONE_MOUNT_DAEMON_TIMEOUT}" \
            --dir-cache-time="${RCLONE_MOUNT_DIR_CACHE_TIME}" \
            --dir-perms="${RCLONE_MOUNT_DIR_PERMS}" \
            --file-perms="${RCLONE_MOUNT_FILE_PERMS}" \
            --gid="${RCLONE_MOUNT_GID}" \
            --max-read-ahead="${RCLONE_MOUNT_MAX_READ_AHEAD}" \
            --poll-interval="${RCLONE_MOUNT_POLL_INTERVAL}" \
            --uid="${RCLONE_MOUNT_UID}" \
            --umask="${RCLONE_MOUNT_UMASK}" \
            --buffer-size="1G" \
            --dropbox-batch-mode=sync \
            --dropbox-batch-size=10 \
            --transfers=10 \
            --dropbox-chunk-size=64M \
            --dropbox-batch-timeout="30s" \
            --dropbox-batch-commit-timeout=12h0m0s \
            --vfs-cache-max-age="${RCLONE_MOUNT_VFS_CACHE_MAX_AGE}" \
            --vfs-cache-max-size="${RCLONE_MOUNT_VFS_CACHE_MAX_SIZE}" \
            --vfs-cache-mode="${RCLONE_MOUNT_VFS_CACHE_MODE}" \
            --vfs-cache-poll-interval="${RCLONE_MOUNT_VFS_CACHE_POLL_INTERVAL}" \
            --vfs-read-chunk-size="${RCLONE_MOUNT_VFS_READ_CHUNK_SIZE}" \
            --vfs-read-chunk-size-limit="${RCLONE_MOUNT_VFS_READ_CHUNK_SIZE_LIMIT}" \
#TODO: Include this once a proper default value is determined
#            --volname="${RCLONE_MOUNT_VOLNAME}"
            "${REMOTE_NAME}:${REMOTE_PATH}" "${MOUNT_DIR}"

#Execute Post Mount Script if specified
ExecStartPost=/bin/sh -c "${POST_MOUNT_SCRIPT}"

#Unmount rclone fs
ExecStop=/bin/fusermount -u "${MOUNT_DIR}"
ExecStop=umount "${MOUNT_DIR}"

#Restart info
Restart=always
RestartSec=10

[Install]
WantedBy=default.target