initial commit

src/main.rs

@@ -0,0 +1,47 @@
+mod rss;
+mod input;
+mod download;
+
+use std::fs;
+
+use anyhow::Context;
+
+fn main() -> anyhow::Result<()> {
+
+    let args = {
+        use clap::Parser;
+        input::Args::parse()
+    };
+
+    let config : input::Config = {
+        let config = fs::read_to_string(&args.config)
+            .with_context(|| "failed to read in podcast configuration file")?;
+
+        toml::from_str(&config[..])?
+    };
+
+    let config_path = args.config.canonicalize()?;
+    let Some(root) = config_path.parent() else {
+        anyhow::bail!("could not get parent of configuration path for root directory")
+    };
+
+    // Updating single podcast
+    if let Some(alias) = args.podcast {
+        if let Some(feed_url) = config.podcasts.get(&alias) {
+            download::update_podcast(&alias, root, feed_url)?;
+        }
+        else {
+            anyhow::bail!(r#"podcast "{}" not found in configuration file"#, alias)
+        }
+    }
+    // Updating all podcasts
+    else {
+        for (alias, feed_url) in config.podcasts {
+            download::update_podcast(&alias, root, &feed_url)?;
+        }
+    }
+
+    Ok(())
+}
+
+