backup: add --init option

changelog/new.txt

@@ -20,4 +20,5 @@ New features:
 - Creation of new keys now enforces confirmation of entered key. This helps to prevent mistype of passwords during the initial entry
 - Check: Add check if time is set for packs-to-delete
 - ls: Options --long (-l) and --summary (-s) have been added.
-- forget: Option --json has been added.
+- forget: Option --json has been added.
+- backup: New option --init to initialize repository if it doesn't exist yet.

config/full.toml

@@ -74,6 +74,7 @@ exclude-if-present = [".nobackup", "CACHEDIR.TAG"] # Default: not set
 one-file-system = false
 exclude-larger-than = "100MB" # Default: not set
 json = false
+init = false
 
 # Backup options for specific sources - all above options are also available here and replace them for the given source
 [[backup.sources]]
@@ -104,6 +105,7 @@ exclude-if-present = [".nobackup", "CACHEDIR.TAG"] # Default: not set
 one-file-system = false
 exclude-larger-than = "100MB" # Default: not set
 json = false
+init = false
 
 [[backup.sources]]
 source = "/path/to/source2 /second/path" # multiple local paths are allowd within one source

src/commands/backup.rs

@@ -17,10 +17,12 @@ use merge::Merge;
 use serde::Deserialize;
 
 use rustic_core::{
-    BackupOptions, LocalSourceFilterOptions, LocalSourceSaveOptions, ParentOptions, PathList,
-    SnapshotOptions,
+    BackupOptions, ConfigOptions, KeyOptions, LocalSourceFilterOptions, LocalSourceSaveOptions,
+    ParentOptions, PathList, Repository, SnapshotOptions,
 };
 
+use super::init::init;
+
 /// `backup` subcommand
 #[derive(Clone, Command, Default, Debug, clap::Parser, Deserialize, Merge)]
 #[serde(default, rename_all = "kebab-case", deny_unknown_fields)]
@@ -56,6 +58,11 @@ pub struct BackupCmd {
     #[merge(strategy = merge::bool::overwrite_false)]
     json: bool,
 
+    /// Initialize repository, if it doesn't exist yet
+    #[clap(long)]
+    #[merge(strategy = merge::bool::overwrite_false)]
+    init: bool,
+
     #[clap(flatten, next_help_heading = "Options for parent processing")]
     #[serde(flatten)]
     parent_opts: ParentOptions,
@@ -68,6 +75,16 @@ pub struct BackupCmd {
     #[serde(flatten)]
     snap_opts: SnapshotOptions,
 
+    #[clap(flatten, next_help_heading = "Key options (when using --init)")]
+    #[serde(skip)]
+    #[merge(skip)]
+    key_opts: KeyOptions,
+
+    #[clap(flatten, next_help_heading = "Config options (when using --init)")]
+    #[serde(skip)]
+    #[merge(skip)]
+    config_opts: ConfigOptions,
+
     #[clap(skip)]
     #[merge(strategy = merge_sources)]
     sources: Vec<BackupCmd>,
@@ -98,7 +115,21 @@ impl BackupCmd {
     fn inner_run(&self) -> Result<()> {
         let config = RUSTIC_APP.config();
 
-        let repo = open_repository(&config)?.to_indexed_ids()?;
+        let po = config.global.progress_options;
+        let repo = Repository::new_with_progress(&config.repository, po)?;
+        // Initialize repository if --init is set and it is not yet initialized
+        let repo = if self.init && repo.config_id()?.is_none() {
+            if config.global.dry_run {
+                bail!(
+                    "cannot initialize repository {} in dry-run mode!",
+                    repo.name
+                );
+            }
+            init(repo, &self.key_opts, &self.config_opts)?
+        } else {
+            open_repository(&config)?
+        }
+        .to_indexed_ids()?;
 
         // manually check for a "source" field, check is not done by serde, see above.
         if !config.backup.source.is_empty() {

src/commands/init.rs

@@ -9,7 +9,7 @@ use crate::{Application, RUSTIC_APP};
 
 use dialoguer::Password;
 
-use rustic_core::{ConfigOptions, KeyOptions, Repository};
+use rustic_core::{ConfigOptions, KeyOptions, OpenStatus, Repository};
 
 /// `init` subcommand
 #[derive(clap::Parser, Command, Debug)]
@@ -42,15 +42,17 @@ impl InitCmd {
         if repo.config_id()?.is_some() {
             bail!("Config file already exists. Aborting.");
         }
-        init(repo, &self.key_opts, &self.config_opts)
+
+        let _ = init(repo, &self.key_opts, &self.config_opts)?;
+        Ok(())
     }
 }
 
 pub(crate) fn init<P, S>(
     repo: Repository<P, S>,
     key_opts: &KeyOptions,
     config_opts: &ConfigOptions,
-) -> Result<()> {
+) -> Result<Repository<P, OpenStatus>> {
     let pass = repo.password()?.unwrap_or_else(|| {
         match Password::new()
             .with_prompt("enter password for new key")
@@ -66,7 +68,5 @@ pub(crate) fn init<P, S>(
         }
     });
 
-    let _ = repo.init_with_password(&pass, key_opts, config_opts)?;
-
-    Ok(())
+    Ok(repo.init_with_password(&pass, key_opts, config_opts)?)
 }