Add first pass on ideas for generating the config.

Cargo.toml

@@ -10,6 +10,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+ansi_term = "0.12.1"
 clap = { version = "3.0.0-rc.9", features = ["derive"] }
 notify = "4.0.16"
 serde = "1.0"

examples/config.yaml

@@ -1,6 +1,7 @@
+---
 remote:
-  owner: jrpotter
-  name: home-config
+  owner: test
+  name: woah
 packages:
   homesync:
     configs:

src/config.rs

@@ -1,11 +1,9 @@
+use ansi_term::Colour::Green;
 use serde_derive::{Deserialize, Serialize};
 use std::collections::HashMap;
-use std::env;
-use std::error;
-use std::fmt;
-use std::fs;
-use std::io;
-use std::path::PathBuf;
+use std::io::Write;
+use std::path::{Path, PathBuf};
+use std::{env, error, fmt, fs, io};
 
 // ========================================
 // Error
@@ -69,10 +67,28 @@ impl Config {
     pub fn new(contents: &str) -> Result<Self> {
         Ok(serde_yaml::from_str(&contents)?)
     }
+
+    pub fn default() -> Self {
+        Config {
+            remote: Remote {
+                owner: "example-user".to_owned(),
+                name: "home-config".to_owned(),
+            },
+            packages: HashMap::new(),
+        }
+    }
+
+    pub fn save(&self, path: &Path) -> Result<()> {
+        // TODO(jrpotter): Create backup file before overwriting.
+        let mut file = fs::File::create(path)?;
+        let serialized = serde_yaml::to_string(&self)?;
+        file.write_all(serialized.as_bytes())?;
+        Ok(())
+    }
 }
 
 // ========================================
-// Public
+// Loading
 // ========================================
 
 /// Returns the default configuration files `homesync` looks for.
@@ -83,7 +99,7 @@ impl Config {
 /// - `$XDG_CONFIG_HOME/homesync/homesync.yml`
 ///
 /// Returned `PathBuf`s are looked for in the above order.
-pub fn default_configs() -> Vec<PathBuf> {
+pub fn default_paths() -> Vec<PathBuf> {
     let mut paths: Vec<PathBuf> = Vec::new();
     if let Ok(home) = env::var("HOME") {
         paths.extend_from_slice(&[
@@ -104,15 +120,50 @@ pub fn default_configs() -> Vec<PathBuf> {
     paths
 }
 
-pub fn read_config(paths: &Vec<PathBuf>) -> Result<Config> {
+pub fn load(paths: &Vec<PathBuf>) -> Result<(&Path, Config)> {
     // When trying our paths, the only acceptable error is a `NotFound` file.
     // Anything else should be surfaced to the end user.
     for path in paths {
         match fs::read_to_string(path) {
             Err(err) if err.kind() == io::ErrorKind::NotFound => continue,
             Err(err) => return Err(Error::FileError(err)),
-            Ok(contents) => return Ok(Config::new(&contents)?),
+            Ok(contents) => return Ok((&path, Config::new(&contents)?)),
         }
     }
     Err(Error::MissingConfig)
 }
+
+// ========================================
+// Initialization
+// ========================================
+
+pub fn init(path: &Path, default: Config) -> Result<()> {
+    // TODO(jrpotter): Use curses to make this nicer.
+    println!(
+        "Generating config at {}...\n\n",
+        Green.paint(path.display().to_string())
+    );
+    print!(
+        "Git repository owner <{}> (enter to continue): ",
+        default.remote.owner
+    );
+    io::stdout().flush()?;
+    let mut owner = String::new();
+    io::stdin().read_line(&mut owner)?;
+    let owner = owner.trim().to_owned();
+
+    print!(
+        "Git repository name <{}> (enter to continue): ",
+        default.remote.name
+    );
+    io::stdout().flush()?;
+    let mut name = String::new();
+    io::stdin().read_line(&mut name)?;
+    let name = name.trim().to_owned();
+
+    Config {
+        remote: Remote { owner, name },
+        packages: default.packages,
+    }
+    .save(path)
+}

src/lib.rs

@@ -1,36 +1,63 @@
 pub mod config;
 
+use ansi_term::Colour::Green;
+use config::Config;
 use std::error::Error;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
-pub fn run_configure(
-    paths: Vec<PathBuf>,
-    _matches: &clap::ArgMatches,
-) -> Result<(), Box<dyn Error>> {
+pub fn run_add(paths: Vec<PathBuf>) -> Result<(), config::Error> {
+    debug_assert!(!paths.is_empty(), "`run_init` paths empty");
+    if paths.is_empty() {
+        return Err(config::Error::MissingConfig);
+    }
+    // TODO(jrpotter): Show $EDITOR that allows writing specific package.
+    Ok(())
+}
+
+pub fn run_init(paths: Vec<PathBuf>) -> Result<(), config::Error> {
+    // TODO(jrpotter): Use a nonempty implementation instead of this.
+    debug_assert!(!paths.is_empty(), "`run_init` paths empty");
+    if paths.is_empty() {
+        return Err(config::Error::MissingConfig);
+    }
     // Check if we already have a local config somewhere. If so, reprompt the
     // same configuration options and override the values present in the current
     // YAML file.
-    match config::read_config(&paths) {
-        Ok(_) => {
-            print!("successfully read\n");
-            Ok(())
-        }
-        Err(config::Error::MissingConfig) => {
-            print!("missing config\n");
-            Ok(())
-        }
-        Err(e) => Err(Box::new(e)),
+    match config::load(&paths) {
+        Ok((path, config)) => config::init(path, config),
+        // TODO(jrpotter): Verify I have permission to write at specified path.
+        // Make directories if necessary.
+        Err(config::Error::MissingConfig) => config::init(&paths[0], Config::default()),
+        Err(e) => Err(e),
     }
 }
 
-pub fn run_push(_matches: &clap::ArgMatches) -> Result<(), Box<dyn Error>> {
+pub fn run_list(paths: Vec<PathBuf>) -> Result<(), config::Error> {
+    debug_assert!(!paths.is_empty(), "`run_init` paths empty");
+    if paths.is_empty() {
+        return Err(config::Error::MissingConfig);
+    }
+    match config::load(&paths) {
+        Ok((path, config)) => {
+            // TODO(jrpotter): Should sort these entries.
+            // Also clean up where I use the console writing or not.
+            println!(
+                "Listing packages at {}...\n",
+                Green.paint(path.display().to_string())
+            );
+            for (k, _) in config.packages {
+                println!("• {}", k);
+            }
+            Ok(())
+        }
+        Err(e) => Err(e),
+    }
+}
+
+pub fn run_pull(_: &clap::ArgMatches) -> Result<(), Box<dyn Error>> {
     Ok(())
 }
 
-pub fn run_pull(_matches: &clap::ArgMatches) -> Result<(), Box<dyn Error>> {
-    Ok(())
-}
-
-pub fn run_add(_matches: &clap::ArgMatches) -> Result<(), Box<dyn Error>> {
+pub fn run_push(_: &clap::ArgMatches) -> Result<(), Box<dyn Error>> {
     Ok(())
 }

src/main.rs

@@ -1,8 +1,7 @@
 use clap::{App, AppSettings, Arg};
-use std::error::Error;
 use std::path::PathBuf;
 
-fn main() -> Result<(), Box<dyn Error>> {
+fn main() {
     let matches = App::new("homesync")
         .about("Cross desktop configuration sync tool.")
         .version("0.1.0")
@@ -16,22 +15,40 @@ fn main() -> Result<(), Box<dyn Error>> {
                 .help("Specify a configuration file to use in place of defaults")
                 .takes_value(true),
         )
-        .subcommand(App::new("configure").about("Initialize the homesync local repository"))
-        .subcommand(App::new("push").about("Push local repository to remote repository"))
-        .subcommand(App::new("pull").about("Pull remote repository into local repository"))
         .subcommand(App::new("add").about("Add new configuration to local repository"))
+        .subcommand(App::new("init").about("Initialize the homesync local repository"))
+        .subcommand(App::new("list").about("See which packages homesync manages"))
+        .subcommand(App::new("pull").about("Pull remote repository into local repository"))
+        .subcommand(App::new("push").about("Push local repository to remote repository"))
         .get_matches();
 
-    let configs = match matches.value_of("config") {
+    let paths = match matches.value_of("config") {
         Some(path) => vec![PathBuf::from(path)],
-        None => homesync::config::default_configs(),
+        None => homesync::config::default_paths(),
     };
 
     match matches.subcommand() {
-        Some(("configure", ms)) => homesync::run_configure(configs, ms),
-        Some(("push", ms)) => homesync::run_push(ms),
-        Some(("pull", ms)) => homesync::run_pull(ms),
-        Some(("add", ms)) => homesync::run_add(ms),
+        Some(("add", _)) => {
+            if let Err(e) = homesync::run_add(paths) {
+                eprintln!("{}", e);
+            }
+        }
+        Some(("init", _)) => {
+            if let Err(e) = homesync::run_init(paths) {
+                eprintln!("{}", e);
+            }
+        }
+        Some(("list", _)) => {
+            if let Err(e) = homesync::run_list(paths) {
+                eprintln!("{}", e);
+            }
+        }
+        Some(("pull", ms)) => {
+            homesync::run_pull(ms);
+        }
+        Some(("push", ms)) => {
+            homesync::run_push(ms);
+        }
         _ => unreachable!(),
     }
 }