take a backup

Cargo.lock

@@ -45,6 +45,21 @@ version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
 
+[[package]]
+name = "android-tzdata"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.14"
@@ -160,6 +175,12 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -184,6 +205,20 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.38"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a21f936df1771bf62b77f047b726c4625ff2e8aa607c01ec06e5a05bd8463401"
+dependencies = [
+ "android-tzdata",
+ "iana-time-zone",
+ "js-sys",
+ "num-traits",
+ "wasm-bindgen",
+ "windows-targets 0.52.5",
+]
+
 [[package]]
 name = "clap"
 version = "4.5.7"
@@ -257,6 +292,12 @@ version = "0.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.12"
@@ -422,6 +463,7 @@ checksum = "9fc0510504f03c51ada170672ac806f1f105a88aa97a5281117e1ddc3368e51a"
 name = "firefish-cli"
 version = "0.1.0-alpha.1"
 dependencies = [
+ "chrono",
  "clap",
  "color-print",
  "serde",
@@ -632,6 +674,29 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.60"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7ffbb5a1b541ea2561f8c41c087286cc091e21e556a4f09a8f6cbf17b69b141"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "windows-core",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -670,6 +735,15 @@ version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
+[[package]]
+name = "js-sys"
+version = "0.3.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29c15563dc2726973df627357ce0c9ddddbea194836909d655df6a75d2cf296d"
+dependencies = [
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -1769,6 +1843,60 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b8dad83b4f25e74f184f64c43b150b91efe7647395b42289f38e50566d82855b"
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4be2531df63900aeb2bca0daaaddec08491ee64ceecbee5076636a3b026795a8"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "614d787b966d3989fa7bb98a654e369c762374fd3213d212cfc0251257e747da"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.66",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.66",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
+
 [[package]]
 name = "whoami"
 version = "1.5.1"
@@ -1779,6 +1907,15 @@ dependencies = [
  "wasite",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets 0.52.5",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"

Cargo.toml

@@ -10,6 +10,7 @@ name = "fishctl"
 path = "src/main.rs"
 
 [dependencies]
+chrono = "0.4"
 clap = { version = "4.5", features = ["derive"] }
 color-print = "0.3"
 thiserror = "1.0"

src/command/config/update.rs

@@ -4,29 +4,50 @@ mod v1;
 
 use crate::{
     command::config::{next_revision, RevisionCheckError},
-    config::Revision,
+    config::{Revision, CLIENT_CONFIG_PATH, SERVER_CONFIG_PATH},
 };
+use chrono::Local;
+use color_print::cprintln;
+use std::{fs, io};
 
 #[derive(thiserror::Error, Debug)]
 pub(crate) enum UpdateError {
     #[error(transparent)]
     UnknownRevision(#[from] RevisionCheckError),
     #[error(transparent)]
+    FileOperation(#[from] io::Error),
+    #[error(transparent)]
     V1(#[from] v1::Error),
 }
 
-async fn update_to_latest() -> Result<(), UpdateError> {
+fn take_backup() -> Result<(), UpdateError> {
-    if next_revision()?.is_none() {
+    let current_time = Local::now().format("%Y%m%d%H%M%S").to_string();
-        println!("Your config files are already up-to-date! (as of this fishctl release)");
+    let server_backup_filename = format!("{}-backup-{}", SERVER_CONFIG_PATH, current_time);
-        return Ok(());
+    let client_backup_filename = format!("{}-backup-{}", CLIENT_CONFIG_PATH, current_time);
-    }
 
+    cprintln!(
+        "Saving server config backup as <bold>{}</>...",
+        server_backup_filename
+    );
+    fs::copy(SERVER_CONFIG_PATH, server_backup_filename)?;
+
+    cprintln!(
+        "Saving client config backup as <bold>{}</>...",
+        client_backup_filename
+    );
+    fs::copy(CLIENT_CONFIG_PATH, client_backup_filename)?;
+
+    Ok(())
+}
+
+async fn update_to_latest() -> Result<(), UpdateError> {
     while let Some(next_revision) = next_revision()? {
         run_impl(next_revision).await?;
     }
     Ok(())
 }
 
+/// Updates config files to the specified revision.
 async fn run_impl(revision: Revision) -> Result<(), UpdateError> {
     match revision {
         Revision::V1 => v1::run().await?,
@@ -35,6 +56,16 @@ async fn run_impl(revision: Revision) -> Result<(), UpdateError> {
 }
 
 pub(super) async fn run(revision: Option<Revision>) -> Result<(), UpdateError> {
+    let next_revision = next_revision()?;
+
+    if next_revision.is_none() {
+        println!("Your config files are already up-to-date! (as of this fishctl release)");
+        return Ok(());
+    }
+    if next_revision.unwrap() != Revision::V1 {
+        take_backup()?;
+    }
+
     match revision {
         Some(revision) => run_impl(revision).await,
         None => update_to_latest().await,

src/command/config/update/v1.rs

@@ -432,7 +432,7 @@ fn create_new_client_config(meta: Meta) -> Result<client::Config, Error> {
 }
 
 pub(super) async fn run() -> Result<(), Error> {
-    println!("Updating the config revision to 1...");
+    println!("Updating the config to revision 1...");
 
     let (default_yml, meta) = read_old_config().await?;