src/feed/find.rs

@@ -2,8 +2,10 @@ use crate::prelude::*;
 
 use crate::network::{NetUrl, NetworkEnv};
 
-pub fn find(site: &str, channel_name: &str, e: &NetworkEnv) -> Result<NetUrl> {
-    if let Some(channel_prefix) = channel_name.chars().next() {
+use super::ChannelName;
+
+pub fn find(site: &str, channel_name: &ChannelName, e: &NetworkEnv) -> Result<NetUrl> {
+    if let Some(channel_prefix) = channel_name.0.chars().next() {
         if channel_prefix != '@' {
             return Err(anyhow!(
                 "Channel Name must begin with an '@': {}",
@@ -51,7 +53,7 @@ mod tests {
             download_as_mp3: stub_network_download_as_mp3(),
         };
         //when
-        let result = find("site", "@channel", &network_env)?;
+        let result = find("site", &ChannelName::from("@channel"), &network_env)?;
         //then
         assert_eq!(result, NetUrl::from("the-rss-url"));
         Ok(())
@@ -66,7 +68,11 @@ mod tests {
             download_as_mp3: stub_network_download_as_mp3(),
         };
         //when
-        let result = find("site", "invalid-channel-name", &network_env);
+        let result = find(
+            "site",
+            &ChannelName::from("invalid-channel-name"),
+            &network_env,
+        );
         //then
         assert!(result.is_err());
         Ok(())

src/feed/mod.rs

@@ -12,3 +12,16 @@ pub fn get(url: &NetUrl, e: &NetworkEnv) -> Result<Feed> {
     let channel = Feed::read_from(&content[..]).context("Could not parse RSS feed")?;
     Ok(channel)
 }
+
+#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+pub struct ChannelName(pub String);
+impl ChannelName {
+    pub fn from(channel_name: &str) -> Self {
+        Self(channel_name.to_string())
+    }
+}
+impl std::fmt::Display for ChannelName {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.0.as_str())
+    }
+}

src/file/read.rs

@@ -1,15 +1,15 @@
-use crate::prelude::*;
+use crate::{feed::ChannelName, prelude::*};
 
 use crate::file::FileEnv;
 use std::io::{BufRead, BufReader};
 
-pub fn lines_from(file_name: &str, e: &FileEnv) -> Result<Vec<String>> {
+pub fn lines_from(file_name: &str, e: &FileEnv) -> Result<Vec<ChannelName>> {
     let file = (e.open)(file_name).context(format!("Opening file: {file_name}"))?;
     let reader = BufReader::new(file);
     let mut lines = vec![];
     for line in reader.lines().flatten() {
         if line.starts_with('@') {
-            lines.push(line);
+            lines.push(ChannelName(line));
         }
     }
     Ok(lines)
@@ -41,7 +41,13 @@ mod tests {
 
         //then
         drop(dir);
-        assert_eq!(result, ["@sub1", "@sub2", "@sub3"]);
+        assert_eq!(
+            result,
+            ["@sub1", "@sub2", "@sub3"]
+                .into_iter()
+                .map(ChannelName::from)
+                .collect::<Vec<ChannelName>>()
+        );
         Ok(())
     }
 
@@ -64,7 +70,13 @@ mod tests {
 
         //then
         drop(dir);
-        assert_eq!(result, ["@sub1", "@sub2", "@sub3"]);
+        assert_eq!(
+            result,
+            ["@sub1", "@sub2", "@sub3"]
+                .into_iter()
+                .map(ChannelName::from)
+                .collect::<Vec<ChannelName>>()
+        );
         Ok(())
     }
 
@@ -87,7 +99,13 @@ mod tests {
 
         //then
         drop(dir);
-        assert_eq!(result, ["@sub1", "@sub3"]);
+        assert_eq!(
+            result,
+            ["@sub1", "@sub3"]
+                .into_iter()
+                .map(ChannelName::from)
+                .collect::<Vec<ChannelName>>()
+        );
         Ok(())
     }
 }

src/lib.rs

@@ -34,7 +34,7 @@ pub fn run(site: &str, a: &Args, e: Env) -> Result<()> {
             if let Some(link) = entry.links().first() {
                 if !history::find(link, &a.history, &e.file).context("Finding history")? {
                     println!("Downloading {}: {}", &channel_name, entry.title().as_str());
-                    (e.network.download_as_mp3)(&NetUrl(link.href.clone()))
+                    (e.network.download_as_mp3)(&NetUrl(link.href.clone()), &channel_name)
                         .context("Downloading as MP3")?;
                     history::add(link, &a.history, &e.file).context("Adding to history")?;
                 }

src/network/env.rs

@@ -1,6 +1,6 @@
 use std::process::Command;
 
-use crate::prelude::*;
+use crate::{feed::ChannelName, prelude::*};
 
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct NetUrl(pub String);
@@ -19,7 +19,7 @@ pub type NetworkFetchAsTextFn = Box<dyn Fn(&NetUrl) -> Result<String>>;
 
 pub type NetworkFetchAsBytesFn = Box<dyn Fn(&NetUrl) -> Result<bytes::Bytes>>;
 
-pub type NetworkDownloadAsMp3Fn = Box<dyn Fn(&NetUrl) -> Result<()>>;
+pub type NetworkDownloadAsMp3Fn = Box<dyn Fn(&NetUrl, &ChannelName) -> Result<()>>;
 
 pub struct NetworkEnv {
     pub fetch_as_text: NetworkFetchAsTextFn,
@@ -41,12 +41,14 @@ impl Default for NetworkEnv {
                     .bytes()
                     .context(format!("Parsing bytes from body of response for {}", url))
             }),
-            download_as_mp3: Box::new(|url| {
+            download_as_mp3: Box::new(|url, channel_name| {
                 let cmd = "yt-dlp";
                 let output = Command::new(cmd)
                     .arg("--extract-audio")
                     .arg("--audio-format")
                     .arg("mp3")
+                    .arg("-p")
+                    .arg(format!("~/Music/{}", channel_name))
                     .arg(&url.0)
                     .output()
                     .with_context(|| {

src/test_utils.rs

@@ -11,6 +11,7 @@ use anyhow::Context;
 use tempfile::{tempdir, TempDir};
 
 use crate::{
+    feed::ChannelName,
     file::{FileAppendLineFn, FileOpenFn},
     network::{NetUrl, NetworkDownloadAsMp3Fn, NetworkFetchAsBytesFn, NetworkFetchAsTextFn},
     prelude::*,
@@ -70,7 +71,7 @@ pub fn mock_file_open(real_paths: HashMap<String, String>) -> FileOpenFn {
 }
 
 pub fn mock_network_download_as_mp3(tx: Sender<NetUrl>) -> NetworkDownloadAsMp3Fn {
-    Box::new(move |url: &NetUrl| {
+    Box::new(move |url: &NetUrl, _channel_name: &ChannelName| {
         tx.send(url.clone())?;
         Ok(())
     })
@@ -84,5 +85,11 @@ pub fn stub_network_fetch_as_bytes() -> NetworkFetchAsBytesFn {
     Box::new(|url: &NetUrl| Err(anyhow!("Not implemented: network_fetch_as_bytes: {}", url)))
 }
 pub fn stub_network_download_as_mp3() -> NetworkDownloadAsMp3Fn {
-    Box::new(|url: &NetUrl| Err(anyhow!("Not implemented: network_download_as_mp3: {}", url)))
+    Box::new(|url: &NetUrl, channel_name: &ChannelName| {
+        Err(anyhow!(
+            "Not implemented: network_download_as_mp3: ({}) {}",
+            channel_name,
+            url,
+        ))
+    })
 }