Added clap and experimenting with that framework

application/Cargo.toml

@@ -10,3 +10,4 @@ refinery = { version = "0.8",features = ["rusqlite"]}
 rusqlite = { version = "0.27.0"}
 config = { version = "0.13.1", features = ["toml"] }
 serde = { version = "1.0", features = ["derive"]}
+clap = { version = "3.2.21", features = ["derive"] }

application/src/configuration.rs

@@ -1,7 +1,13 @@
-use std::env;
-
+use clap::Parser;
 use config::{Config, ConfigError, Environment, File};
 use serde::Deserialize;
+use std::fmt::Formatter;
+use std::str::FromStr;
+use std::{env, fmt};
+
+pub struct ArgumentParser {}
+
+impl ArgumentParser {}
 
 #[derive(Debug, Deserialize)]
 pub struct Database {
@@ -18,21 +24,12 @@ impl Settings {
         let run_mode = env::var("RUN_MODE").unwrap_or_else(|_| "development".into());
 
         let s = Config::builder()
-            // Start off by merging in the "default" configuration file
             .add_source(File::with_name("settings"))
-            // Add in the current environment file
-            // Default to 'development' env
-            // Note that this file is _optional_
             .add_source(File::with_name(&format!("settings.{}", run_mode)).required(false))
-            // Add in a local configuration file
-            // This file shouldn't be checked in to git
             .add_source(File::with_name("local").required(false))
-            // Eg.. `VERSION_CHECKER_DEBUG=1 ./target/version_checker` would set the `debug` key
             .add_source(Environment::with_prefix("version_checker"))
             .build()?;
 
-        // Now that we're done, let's access our configuration
-
         s.try_deserialize()
     }
 }

application/src/lib.rs

@@ -1,5 +1,7 @@
+use configuration::ArgumentParser;
+use configuration::Settings;
 use rusqlite::Connection;
-pub mod settings;
+pub mod configuration;
 
 mod embedded {
     use refinery::embed_migrations;
@@ -11,11 +13,16 @@ pub fn migrate() {
     embedded::migrations::runner().run(&mut conn).unwrap();
 }
 
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
+struct Application {
+    settings: Settings,
+}
+
+impl Application {
+    pub fn new(settings: Settings, arguments: ArgumentParser) -> Application {
+        Application { settings }
+    }
+
+    pub fn run(&self) {
+        migrate();
     }
 }

console/Cargo.toml

@@ -6,4 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-application = { path= "../application" }
+application = { path= "../application" }

tests/settings_test.rs

@@ -1,10 +1,10 @@
 #[test]
 fn can_default_settings_be_loaded() {
-    let settings = application::settings::Settings::new().expect("error when loading settings");
+    let settings = application::configuration::Settings::new().expect("error when loading settings");
 }
 
 #[test]
 fn database_settings_can_be_loaded() {
-    let settings = application::settings::Settings::new().expect("error when loading settings");
+    let settings = application::configuration::Settings::new().expect("error when loading settings");
     assert_eq!("version_checker_db", settings.database.connection_string);
 }