early cli interface

Cargo.toml

@@ -1,16 +1,26 @@
 [package]
-name = "template"
+name = "netpong"
 version = "0.1.0"
 edition = "2021"
-publish = false
+publish = true
 authors = ["Christoph J. Scherr <software@cscherr.de>"]
 license = "MIT"
-description = "No description yet"
+description = "let your servers play ping pong"
 readme = "README.md"
-homepage = "https://git.cscherr.de/PlexSheep/rs-base"
-repository = "https://git.cscherr.de/PlexSheep/rs-base"
-keywords = ["template"]
+homepage = "https://git.cscherr.de/PlexSheep/netpong"
+repository = "https://git.cscherr.de/PlexSheep/netpong"
+keywords = ["networking"]
 
 
 [dependencies]
+anyhow = "1.0.79"
+clap = "4.4.18"
+clap-num = "1.0.2"
+clap-verbosity-flag = "2.1.2"
+libpt = { version = "0.3.10", features = ["net"] }
+threadpool = "1.8.1"
 
+[features]
+default = ["server", "client"]
+client = []
+server = []

src/main.rs

@@ -1,3 +1,84 @@
+//! # netpong
+//! This is pretty silly and only let's your client send "ping"
+//! over a connection, while letting a server reply pong to
+//! every connection. But I had to make it for some reason.
+
+use libpt::log::*;
+
+use clap::Parser;
+use clap_verbosity_flag::{InfoLevel, Verbosity};
+
+/// Chose a mode for the application to run in, server needs more than client.
+enum Mode {
+    #[cfg(feature = "server")]
+    Server,
+    #[cfg(feature = "client")]
+    Client,
+}
+
+/// short about section displayed in help
+const ABOUT_ROOT: &'static str = r##"
+Let your hosts play ping pong over the network
+"##;
+/// longer about section displayed in help, is combined with [the short help](ABOUT_ROOT)
+static LONG_ABOUT_ROOT: &'static str = r##"
+
+    Connect to a ping pong server and periodically send a ping. The server will reply with a pong.
+    That's it really. You can also host your own netpong server (server feature).
+"##;
+
+#[derive(Debug, Clone, Parser)]
+#[command(
+    author,
+    version,
+    about = ABOUT_ROOT,
+    long_about = format!("{}{}", ABOUT_ROOT ,LONG_ABOUT_ROOT),
+    help_template =
+r#"{about-section}
+{usage-heading} {usage}
+{all-args}{tab}
+
+libpt: {version}
+Author: {author-with-newline}
+"#
+    )]
+pub struct Cli {
+    // clap_verbosity_flag seems to make this a global option implicitly
+    /// set a verbosity, multiple allowed (f.e. -vvv)
+    #[command(flatten)]
+    pub verbose: Verbosity<InfoLevel>,
+
+    /// show additional logging meta data
+    #[arg(long)]
+    pub meta: bool,
+
+    /// Address of the server
+    pub addr: std::net::SocketAddr,
+}
+
+fn cli_parse() -> Cli {
+    let cli = Cli::parse();
+    let ll: Level = match cli.verbose.log_level().unwrap().as_str() {
+        "TRACE" => Level::TRACE,
+        "DEBUG" => Level::DEBUG,
+        "INFO" => Level::INFO,
+        "WARN" => Level::WARN,
+        "ERROR" => Level::ERROR,
+        _ => {
+            unreachable!();
+        }
+    };
+    if cli.meta {
+        Logger::init(None, Some(ll)).expect("could not initialize Logger");
+    } else {
+        // less verbose version
+        Logger::init_mini(Some(ll)).expect("could not initialize Logger");
+    }
+    return cli;
+}
+
 fn main() {
+    let mut cli = cli_parse();
+    debug!("dumping cli args:\n{:#?}", cli);
     println!("Hello, world!");
 }