1 files changed, 37 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..0459161
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,37 @@
+use std::env;
+use rss::Channel;
+
+/// Parse CLI arguments and return (feed_url, output_dir)
+pub fn parse_args() -> (String, String) {
+    let mut args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        eprintln!("Usage: {} <RSS_FEED_URL> [OUTPUT_DIR]", args[0]);
+        std::process::exit(1);
+    }
+
+    let feed_url = args.remove(1);
+    let output_dir = if args.len() > 1 { args.remove(1) } else { String::from(".") };
+
+    (feed_url, output_dir)
+}
+
+/// Fetch RSS feed content from a URL
+pub fn fetch_feed(url: &str) -> Result<String, reqwest::Error> {
+    reqwest::blocking::get(url)?.text()
+}
+
+/// Parse RSS XML into a Channel
+pub fn parse_feed(xml: &str) -> Result<Channel, rss::Error> {
+    Channel::read_from(xml.as_bytes())
+}
+
+/// Extract the audio URLs from the given channel
+pub fn get_audio_urls(channel: &Channel) -> Vec<&str> {
+    let mut audio_urls = Vec::new();
+    for item in channel.items() {
+        if let Some(enclosure) = item.enclosure() {
+            audio_urls.push(enclosure.url())
+        }
+    }
+    audio_urls
+}