feat: write install server metadata into config file

src/main.rs

@@ -1,6 +1,7 @@
 mod models;
 mod utils;
 
+use crate::models::config::{Config, Mods, Server};
 use crate::models::fabric::FabricVersions;
 use crate::{
     models::vanilla::{VanillaVersionDetail, VanillaVersionType, VanillaVersions},
@@ -43,6 +44,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
         Commands::Init { name: project_name } => {
             tokio::fs::create_dir(&project_name).await?;
             std::env::set_current_dir(&project_name)?;
+            let mut config_file = tokio::fs::File::create("mcsm.toml").await?;
 
             let loaders = vec!["Vanilla", "Fabric"];
             let loader_index = Select::with_theme(&ColorfulTheme::default())
@@ -125,6 +127,18 @@ async fn main() -> Result<(), Box<dyn Error>> {
                         Ok(())
                     })
                     .await?;
+
+                    let config = Config {
+                        server: Server {
+                            version: release_version_names[version_index].to_string(),
+                            loader: loaders[loader_index].to_string(),
+                            loader_version: None,
+                        },
+                        mods: Mods {},
+                    };
+                    config_file
+                        .write_all(toml::to_string(&config)?.as_bytes())
+                        .await?;
                 }
                 1 => {
                     const URL: &str = "https://meta.fabricmc.net/v2/versions";
@@ -196,6 +210,18 @@ async fn main() -> Result<(), Box<dyn Error>> {
                         Ok(())
                     })
                     .await?;
+
+                    let config = Config {
+                        server: Server {
+                            version: game_version,
+                            loader: loaders[loader_index].to_string(),
+                            loader_version: Some(loader_version),
+                        },
+                        mods: Mods {},
+                    };
+                    config_file
+                        .write_all(toml::to_string(&config)?.as_bytes())
+                        .await?;
                 }
                 _ => return Err("Invalid selection".into()),
             }

src/models/config.rs

@@ -0,0 +1,17 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Deserialize, Serialize)]
+pub struct Config {
+    pub server: Server,
+    pub mods: Mods,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct Server {
+    pub version: String,
+    pub loader: String,
+    pub loader_version: Option<String>,
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct Mods {}

src/models/mod.rs

@@ -1,2 +1,3 @@
+pub mod config;
 pub mod fabric;
 pub mod vanilla;