viofo_backup: fixed indentation, always unmount after mounting properly

home/dot_local/bin/executable_viofo_backup.nu

@@ -6,11 +6,15 @@ use std/log
 # It is intended to be ran semi-rarely (every month or two), and is also a limited test of the Fish shell/scripting language.
 # It is intended to be cross-platform, but targets Ubuntu 22.04 LTS (with WSL2 support).
 
-try { 
 # Configuration details
 let host = "roman"  # The host to backup to. This is defined in the ~/.ssh/config file.
 let host_path = "/mnt/user/media/backup/dashcam"  # The path on the remote host to backup to.
 
+# Global state tracking
+mut mounted = false  # Track if we've mounted a drive
+mut letter = ""  # Track the drive letter we're using
+
+try {
     # Check for required commands
     let required_commands = ["rsync", "sudo", "mount", "umount", "cmd.exe", "ssh"]
     for cmd in $required_commands {
@@ -70,7 +74,7 @@ if ($mountable | length) == 0 {
 
     # Have the user choose a drive
     let selected_drive = $mountable | input list -d "DeviceID" "Select a drive to mount for backup"
-let letter = $selected_drive.DeviceId | str replace --regex ":$" "" | str downcase
+    $letter = $selected_drive.DeviceId | str replace --regex ":$" "" | str downcase
     let win_drive_path = $"($letter | str upcase):"
 
     # Check if already mounted
@@ -78,6 +82,7 @@ log info "Checking if drive is already mounted..."
     let findmnt_check = findmnt -J --mountpoint /mnt/($letter) | complete
     if $findmnt_check.exit_code == 0 {
         log debug "Drive is already mounted"
+        $mounted = true
         
         # Check was successful, meaning something must be mounted there
         let mounts = $findmnt_check.stdout | from json
@@ -106,7 +111,7 @@ if $findmnt_check.exit_code == 0 {
 
         log info $"Mount Details: ($current_mount.options)"
         while true {
-        let continue = input "Continue anyways? (y/n)"
+            let continue = input "Continue anyways? [y/n]"
             if $continue == "y" {
                 break
             } else if $continue == "n" {
@@ -131,6 +136,7 @@ if $findmnt_check.exit_code == 0 {
         try {
             log debug "Mounting drive..."
             sudo mount -t drvfs ($win_drive_path) /mnt/($letter) -o uid=(id -u $env.USER),gid=(id -g $env.USER),metadata
+            $mounted = true
         } catch { |err|
             log error $"Error: Could not mount drive: ($err.msg)"
             exit 1
@@ -146,6 +152,7 @@ if $findmnt_check.exit_code == 0 {
             error "Failed to mount drive"
         }
 
+        try { 
             # Test permissions & folder structure
             let expected_folders = [
                 "DCIM",
@@ -162,7 +169,6 @@ if $findmnt_check.exit_code == 0 {
                 let status = test -d ($path)  | complete
                 if $status.exit_code != 0 {
                     error $"Expected folder "($path)" does not exist."
-            
                 } else {
                     log debug $"Folder "($path)" exists"
                 }
@@ -200,21 +206,25 @@ if $findmnt_check.exit_code == 0 {
             }
 
             log info "Sync complete."
+         } catch {|err|
+            log error $"Failed after mounting: ($err.msg)"
+         }
 
         # Unmount the drive
         log info "Unmounting drive..."
+        try {
             sudo umount /mnt/($letter)
             sudo rmdir /mnt/($letter)
-    
-    # TODO: Check if duplicate mounts exist
-    log info "All backed up."
+            $mounted = false
+        } catch { |err|
+            log error $"Could not unmount drive: ($err.msg)"
+            exit 999
+        }
     } catch { |err|
         log error $"Error: Could not unmount drive: ($err.msg)"
         exit 1
     }
 
-
-    
     # TODO: Statistical analysis of file duration
     # On average, how far back do my recordings go? 2 months?
     # While the oldest video file could give an idea of how back I currently go, it would be better to use p99 average bitrate.