From 2aa0eef599db13db6802a75a8b285d75d8035033 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sat, 10 Apr 2021 09:26:19 +0300
Subject: refactor: struct ListFiles subcommand

---
 src/bin/obnam.rs      | 10 ++++------
 src/cmd/list_files.rs | 29 +++++++++++++++++++----------
 src/cmd/mod.rs        |  4 +---
 3 files changed, 24 insertions(+), 19 deletions(-)

diff --git a/src/bin/obnam.rs b/src/bin/obnam.rs
index 72dc208..0552e3b 100644
--- a/src/bin/obnam.rs
+++ b/src/bin/obnam.rs
@@ -5,8 +5,9 @@ use log4rs::config::{Appender, Config, Logger, Root};
 use obnam::cmd::backup::Backup;
 use obnam::cmd::init::Init;
 use obnam::cmd::list::List;
+use obnam::cmd::list_files::ListFiles;
 use obnam::cmd::show_gen::ShowGeneration;
-use obnam::cmd::{get_chunk, list_files, restore, show_config};
+use obnam::cmd::{get_chunk, restore, show_config};
 use obnam::config::ClientConfig;
 use std::path::{Path, PathBuf};
 use structopt::StructOpt;
@@ -34,7 +35,7 @@ fn main() -> anyhow::Result<()> {
             Command::Backup(x) => x.run(&config),
             Command::List(x) => x.run(&config),
             Command::ShowGeneration(x) => x.run(&config),
-            Command::ListFiles { gen_id } => list_files(&config, &gen_id),
+            Command::ListFiles(x) => x.run(&config),
             Command::Restore { gen_id, to } => restore(&config, &gen_id, &to),
             Command::GetChunk { chunk_id } => get_chunk(&config, &chunk_id),
             Command::Config => show_config(&config),
@@ -101,10 +102,7 @@ enum Command {
     Init(Init),
     Backup(Backup),
     List(List),
-    ListFiles {
-        #[structopt(default_value = "latest")]
-        gen_id: String,
-    },
+    ListFiles(ListFiles),
     Restore {
         #[structopt()]
         gen_id: String,
diff --git a/src/cmd/list_files.rs b/src/cmd/list_files.rs
index d490e85..22b102e 100644
--- a/src/cmd/list_files.rs
+++ b/src/cmd/list_files.rs
@@ -3,22 +3,31 @@ use crate::client::BackupClient;
 use crate::config::ClientConfig;
 use crate::error::ObnamError;
 use crate::fsentry::{FilesystemEntry, FilesystemKind};
+use structopt::StructOpt;
 use tempfile::NamedTempFile;
 
-pub fn list_files(config: &ClientConfig, gen_ref: &str) -> Result<(), ObnamError> {
-    let temp = NamedTempFile::new()?;
+#[derive(Debug, StructOpt)]
+pub struct ListFiles {
+    #[structopt(default_value = "latest")]
+    gen_id: String,
+}
 
-    let client = BackupClient::new(config)?;
+impl ListFiles {
+    pub fn run(&self, config: &ClientConfig) -> Result<(), ObnamError> {
+        let temp = NamedTempFile::new()?;
 
-    let genlist = client.list_generations()?;
-    let gen_id: String = genlist.resolve(gen_ref)?;
+        let client = BackupClient::new(config)?;
 
-    let gen = client.fetch_generation(&gen_id, temp.path())?;
-    for file in gen.files()? {
-        println!("{}", format_entry(&file.entry(), file.reason()));
-    }
+        let genlist = client.list_generations()?;
+        let gen_id: String = genlist.resolve(&self.gen_id)?;
 
-    Ok(())
+        let gen = client.fetch_generation(&gen_id, temp.path())?;
+        for file in gen.files()? {
+            println!("{}", format_entry(&file.entry(), file.reason()));
+        }
+
+        Ok(())
+    }
 }
 
 fn format_entry(e: &FilesystemEntry, reason: Reason) -> String {
diff --git a/src/cmd/mod.rs b/src/cmd/mod.rs
index f96dc2a..a5f4884 100644
--- a/src/cmd/mod.rs
+++ b/src/cmd/mod.rs
@@ -1,11 +1,9 @@
 pub mod backup;
 pub mod init;
 pub mod list;
+pub mod list_files;
 pub mod show_gen;
 
-mod list_files;
-pub use list_files::list_files;
-
 pub mod restore;
 pub use restore::restore;
 
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