Implement basic game files download logic

Implement core clap arguments

Respect XDG_BASE_DIR

Currently library extraction is broken because it assumes every instace has it's own library folder. This should be refactored so instances share libraries

Signed-off-by: Filip Wandzio <contact@philw.dev>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..8a01b9f
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,60 @@
+mod constants;
+mod errors;
+
+mod config;
+mod minecraft;
+mod platform;
+mod util;
+
+use clap::Parser;
+use config::Config;
+use errors::McError;
+use log::{debug, info};
+
+#[derive(Parser, Debug)]
+#[command(author, about, disable_version_flag = true)]
+struct Cli {
+    #[arg(long)]
+    version: Option<String>,
+
+    #[arg(long)]
+    username: Option<String>,
+
+    #[arg(long, num_args(0..), allow_hyphen_values = true)]
+    jvm_args: Vec<String>,
+}
+
+#[tokio::main]
+async fn main() -> Result<(), McError> {
+    dotenvy::dotenv().ok();
+    env_logger::init();
+
+    let cli = Cli::parse();
+    let mut config = Config::load()?;
+
+    if let Some(v) = cli.version {
+        config.version = v;
+    }
+
+    if let Some(u) = cli.username {
+        config.username = u;
+    }
+    if !cli.jvm_args.is_empty() {
+        config.jvm_args = cli.jvm_args;
+    }
+
+    info!("Final config after CLI overrides: {:?}", config);
+
+    platform::paths::ensure_dirs(&config)?;
+    info!("Using Minecraft version {}", config.version);
+
+    let version = minecraft::manifests::load_version(&config).await?;
+    info!("Loaded version manifest for: {}", version.id);
+    debug!("Main class: {}", version.main_class);
+
+    minecraft::downloads::download_all(&config, &version).await?;
+    minecraft::extraction::extract_natives(&config, &version)?;
+    minecraft::launcher::launch(&config, &version)?;
+
+    Ok(())
+}