improvements to configure

configure.d/20-backup.sh

@@ -13,11 +13,16 @@ is_installed() {
   command -v restic > /dev/null && command -v rclone > /dev/null && command -v secret-tool > /dev/null
 }
 
-is_configured() {
+backups_on() {
   source "$COREDESKTOP/system/backup-env.sh" > /dev/null || return 1
   [ -n "$RESTIC_PASSWORD_COMMAND" ] && systemctl --user is-enabled -q coredesktop-backup.timer
 }
 
+# Done when backing up to the main Core
+is_configured() {
+  backups_on && [ "$BACKUP_WEBDAV" = "https://nextcloud.$CORE_DOMAIN/remote.php/dav/files/${CORE_EMAIL%@*}" ]
+}
+
 save_secret() {
   printf '%s' "$3" | secret-tool store --label "CoreDesktop backup $1 ($2)" \
     coredesktop backup item "$1" url "$2"
@@ -59,8 +64,78 @@ new_passphrase() {
   save_secret passphrase "$WEBDAV/$BACKUP_DIR" "$pass"
 }
 
+# Stop the daily backup and any running now, and remove its units
+stop_backups() {
+  systemctl --user disable --now coredesktop-backup.timer 2> /dev/null
+  systemctl --user stop coredesktop-backup.service 2> /dev/null
+  rm -f "$UNITS"/coredesktop-backup.{service,timer}
+  systemctl --user daemon-reload
+}
+
+# Delete the backup from Nextcloud, then what's on this computer for it:
+# without the backup, the passphrase and app password are no use
+delete_backups() {
+  local app_password
+  nextcloud_login || { echo "Couldn't sign in to Nextcloud."; return 1; }
+  echo "Deleting $BACKUP_DIR from your Nextcloud files..."
+  rclone purge ":webdav:$BACKUP_DIR" \
+    || { echo "rclone couldn't delete $BACKUP_DIR."; return 1; }
+  echo "Deleted. Nextcloud keeps it in its trash bin, where it still uses space, until you empty it."
+
+  app_password="$(backup_secret nextcloud "$WEBDAV")"
+  [ -n "$app_password" ] && nextcloud_revoke_app_password "$app_password"
+  secret-tool clear coredesktop backup item nextcloud url "$WEBDAV"
+  secret-tool clear coredesktop backup item passphrase url "$WEBDAV/$BACKUP_DIR"
+  rm -f "$BACKUP_CONF"
+}
+
+turn_off() {
+  local answer
+  WEBDAV="$BACKUP_WEBDAV"
+  CORE_USER="$BACKUP_USER"
+  NEXTCLOUD="${BACKUP_WEBDAV%%/remote.php/*}"
+
+  stop_backups
+  echo "Backups are off."
+
+  echo
+  echo "The backups made so far are still in $BACKUP_DIR in your Nextcloud files."
+  if ! confirm "Delete them? They can't be restored from after that."; then
+    echo "Kept them. To turn backups back on: configure backup"
+    return 0
+  fi
+  read -rp "To delete them, type the folder name ($BACKUP_DIR): " answer
+  if [ "$answer" != "$BACKUP_DIR" ]; then
+    echo "That's not the folder name, so the backups were kept."
+    return 0
+  fi
+  delete_backups
+}
+
 run_configure() {
-  local pass
+  local pass choice
+  if backups_on &> /dev/null; then
+    if is_configured &> /dev/null; then
+      echo "Your home folder is backed up daily to $BACKUP_DIR in your Nextcloud files."
+      echo
+      echo "  1) Set it up again"
+    else
+      echo "Your home folder is backed up daily to $BACKUP_DIR on ${BACKUP_WEBDAV%%/remote.php/*},"
+      echo "which isn't your main Core."
+      echo
+      echo "  1) Back up to your main Core ($CORE_DOMAIN) instead; the backups so far stay where they are"
+    fi
+    echo "  2) Turn backups off"
+    echo "  q) Leave it as it is"
+    echo
+    read -rp "Choose: " choice
+    case "$choice" in
+      1) ;;
+      2) turn_off; return ;;
+      *) return 0 ;;
+    esac
+  fi
+
   if [ -z "$CORE_DOMAIN" ] || [ -z "$CORE_EMAIL" ]; then
     echo "Backups go to your Nextcloud files, so set up your Core first: configure core"
     return 1