refactor: new directory structure where the flake module lives in a directory with the template in a subdirectory

rust/template/src/main.rs

@@ -0,0 +1,69 @@
+use std::path::Path;
+
+use clap::Parser;
+use figment::{
+    Figment,
+    providers::{Env, Format, Json, Toml},
+};
+use tracing::{Level, event};
+
+mod args;
+use crate::args::{ActionType, ArgsError, CommandArgs};
+
+mod config;
+
+mod error;
+use crate::error::CommandError;
+
+#[tokio::main]
+async fn main() -> Result<(), CommandError> {
+    let args = CommandArgs::parse();
+
+    let figment = Figment::new()
+        .admerge(Json::file("config.json"))
+        .admerge(Toml::file("config.toml"));
+
+    let config: config::CommandConfig = match &args.config {
+        None => figment,
+        Some(f) => {
+            let file = Path::new(&f);
+
+            match file.extension().and_then(|e| e.to_str()) {
+                Some("toml") => Ok(figment.admerge(Toml::file(file))),
+                Some("json") => Ok(figment.admerge(Json::file(file))),
+                _ => Err(ArgsError::InvalidConfigExtension(
+                    file.extension().and_then(|e| e.to_str().map(String::from)),
+                )),
+            }
+        }?,
+    }
+    .admerge(Env::prefixed("APP_"))
+    .extract()?;
+
+    match &args.action {
+        ActionType::Serve(serve_args) => {
+            tracing_subscriber::fmt()
+                .with_max_level(serve_args.log_level)
+                .init();
+
+            event!(Level::ERROR, "error");
+            event!(Level::WARN, "warn");
+            event!(Level::INFO, "info");
+            event!(Level::DEBUG, "debug");
+            event!(Level::TRACE, "trace");
+
+            println!("{:#?}", args);
+
+            println!("{:#?}", config);
+
+            println!("{:#?}", config.port.ports);
+        }
+    };
+
+    println!(
+        "{}",
+        CommandError::InvalidArgument(ArgsError::InvalidConfigExtension(Some(String::from("txt"))))
+    );
+
+    Ok(())
+}