Librarify blahd for testing

blahd/src/bin/blahd.rs

@@ -0,0 +1,53 @@
+use std::path::PathBuf;
+
+use anyhow::{Context, Result};
+use blahd::config::Config;
+use blahd::{AppState, Database};
+
+/// Blah Chat Server
+#[derive(Debug, clap::Parser)]
+#[clap(about, version = option_env!("CFG_RELEASE").unwrap_or(env!("CARGO_PKG_VERSION")))]
+enum Cli {
+    /// Run the server with given configuration.
+    Serve {
+        /// The path to the configuration file.
+        #[arg(long, short)]
+        config: PathBuf,
+    },
+
+    /// Validate the configuration file and exit.
+    Validate {
+        /// The path to the configuration file.
+        #[arg(long, short)]
+        config: PathBuf,
+    },
+}
+
+fn main() -> Result<()> {
+    tracing_subscriber::fmt::init();
+    let cli = <Cli as clap::Parser>::parse();
+
+    fn parse_config(path: &std::path::Path) -> Result<Config> {
+        let src = std::fs::read_to_string(path)?;
+        let config = basic_toml::from_str::<Config>(&src)?;
+        config.validate()?;
+        Ok(config)
+    }
+
+    match cli {
+        Cli::Serve { config } => {
+            let config = parse_config(&config)?;
+            let db = Database::open(&config.database).context("failed to open database")?;
+            let st = AppState::new(db, config.server);
+            tokio::runtime::Builder::new_multi_thread()
+                .enable_all()
+                .build()
+                .context("failed to initialize tokio runtime")?
+                .block_on(st.serve())
+        }
+        Cli::Validate { config } => {
+            parse_config(&config)?;
+            Ok(())
+        }
+    }
+}