#!/bin/bash
# =============================================================================
# plugin/sbin/podman-mount-managed-disk.sh
#
# Remounts, on every boot, a disk the WebUI's "Format a Disk for Podman
# Storage" flow (webui/plugins/podman/ajax/disks.php's "format" action)
# formatted and mounted for a single-disk system with no cache pool —
# that disk is deliberately outside Unraid's own array/cache pool
# management (it's just a plain XFS filesystem on an otherwise-unassigned
# disk), so nothing else on the system would remount it after a reboot.
#
# Called from plugin/event/disks_mounted, BEFORE rc.podman start, so
# $STORAGE_PATH (pointed at this disk's mountpoint via Settings) is a real
# mounted filesystem by the time podman-storage.sh's `create`/`mount`
# steps run — see that script's "does not exist or is not mounted" check.
#
# Does nothing (exit 0) if the plugin was never used to format a disk —
# /boot/config/plugins/podman/managed-disk.cfg only exists after that flow
# has actually run at least once.
# =============================================================================

set -eu

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=./podman-common.sh
. "$SCRIPT_DIR/podman-common.sh"

MANAGED_DISK_CFG="$PODMAN_BOOT_DIR/managed-disk.cfg"
[ -f "$MANAGED_DISK_CFG" ] || exit 0

UUID=""
MOUNTPOINT=""
# shellcheck source=/dev/null
. "$MANAGED_DISK_CFG"

if [ -z "$UUID" ] || [ -z "$MOUNTPOINT" ]; then
  podman_log_error "mount-managed-disk: $MANAGED_DISK_CFG is missing UUID/MOUNTPOINT, skipping"
  exit 0
fi

if mountpoint -q "$MOUNTPOINT" 2> /dev/null; then
  podman_log "mount-managed-disk: $MOUNTPOINT already mounted"
  exit 0
fi

mkdir -p "$MOUNTPOINT"
if mount "UUID=$UUID" "$MOUNTPOINT"; then
  podman_log "mount-managed-disk: mounted UUID=$UUID at $MOUNTPOINT"
else
  podman_log_error "mount-managed-disk: failed to mount UUID=$UUID at $MOUNTPOINT (disk removed/renamed?)"
fi