Allow configuring backup during setup

scripts/Common/OS/backup.fish

@@ -14,7 +14,7 @@ function backupAction -V dir
     end
 
     set -l deployScript (getDeploymentScript)
-    initConfig --action backup
+    initBackupConfig --action backup
 
     runHook backupSoftware || begin
         echo "Backing up software..."

scripts/Common/OS/setup.fish

@@ -8,6 +8,7 @@ function runSetup
 
     function setupAction -V projectRoot -V PROJECT_CLONE_ROOT
         source "$dir/../../lib/hooks.fish"
+        source "$dir/../../lib/restoration.fish"
         source "$dir/../../lib/settings.fish"
         set -l mountDir (getOSConfig partition.rootDir)
         set -l script (mktemp)
@@ -39,6 +40,14 @@ function runSetup
                 "$argv"
         end
 
+        initBackupConfig --action restore
+
+        if [ -n "$VALHALLA_BACKUP_SERVER_KEY" ]
+            set -l knownHosts /root/.ssh/known_hosts
+            cp "$VALHALLA_BACKUP_SERVER_KEY" "$mountDir$VALHALLA_BACKUP_SERVER_KEY"
+            cp $knownHosts "$mountDir$knownHosts"
+        end
+
         and echo "Cloning project..."
         and source "$dir/../../lib/copy-repo.fish" "$mountDir$PROJECT_CLONE_ROOT"
         runChroot "$mountDir" git config --system --add safe.directory "$PROJECT_CLONE_ROOT"
@@ -52,7 +61,18 @@ function runSetup
 
             wrapScript (
                 string join " " \
-                    "CONFIG_NAME=$(string escape "$CONFIG_NAME")" \
+                    (begin
+                        for var in \
+                                CONFIG_NAME \
+                                VALHALLA_BACKUP_DISABLED \
+                                VALHALLA_BACKUP_DIR \
+                                VALHALLA_BACKUP_SERVER \
+                                VALHALLA_BACKUP_SERVER_PORT \
+                                VALHALLA_BACKUP_SERVER_USER \
+                                VALHALLA_BACKUP_SERVER_KEY
+                            echo "$var=$(string escape "$$var")"
+                        end
+                    end) \
                     (string escape $script))
 
         end | runChroot "$mountDir" tee /root/.bash_profile >/dev/null

scripts/lib/restoration.fish

@@ -1,6 +1,6 @@
 set -l dir (status dirname)
 
-function initConfig -V dir -d "Fetches the configuration by prompting the user to "
+function initBackupConfig -V dir -d "Fetches the configuration by prompting the user to "
     set -l disabled VALHALLA_BACKUP_DISABLED
 
     if [ -z "$$disabled" ]