diff --git a/src/fetch.rs b/src/fetch.rs
index 38fd8ff..1f95f96 100644
--- a/src/fetch.rs
+++ b/src/fetch.rs
@@ -1,10 +1,11 @@
 use crate::prelude::*;
 
 use atom_syndication::Link;
+use std::process::Command;
 
-pub fn download_audio(link: &Link) -> Result<()> {
-    use std::process::Command;
+pub type FetchDownload = fn(&Link) -> Result<()>;
 
+pub fn download(link: &Link) -> Result<()> {
     let cmd = "yt-dlp";
     // println!("{} --extract-audio --audio-format mp3 {}", cmd, &link.href);
     let output = Command::new(cmd)
diff --git a/src/history/add.rs b/src/history/add.rs
index e186644..e904004 100644
--- a/src/history/add.rs
+++ b/src/history/add.rs
@@ -4,7 +4,7 @@ use atom_syndication::Link;
 use std::fs::OpenOptions;
 use std::io::prelude::*;
 
-pub fn mark_as_downloaded(link: &Link, file_name: &str) -> Result<()> {
+pub fn add(link: &Link, file_name: &str) -> Result<()> {
     let mut file = OpenOptions::new()
         .write(true)
         .append(true)
diff --git a/src/history/find.rs b/src/history/find.rs
index 254c41f..5b760b8 100644
--- a/src/history/find.rs
+++ b/src/history/find.rs
@@ -4,7 +4,7 @@ use atom_syndication::Link;
 use std::fs::File;
 use std::io::{BufRead, BufReader};
 
-pub fn is_already_downloaded(link: &Link, file_name: &str) -> Result<bool> {
+pub fn find(link: &Link, file_name: &str) -> Result<bool> {
     if let Ok(file) = File::open(file_name) {
         let reader = BufReader::new(file);
         for line in reader.lines() {
diff --git a/src/history/mod.rs b/src/history/mod.rs
index 87d3186..e36428d 100644
--- a/src/history/mod.rs
+++ b/src/history/mod.rs
@@ -1,5 +1,12 @@
+use crate::prelude::*;
+
 mod add;
 mod find;
 
-pub use add::mark_as_downloaded;
-pub use find::is_already_downloaded;
+pub use add::add;
+pub use find::find;
+
+type Link = atom_syndication::Link;
+
+pub type HistoryFind = fn(&Link, &str) -> Result<bool>;
+pub type HistoryAdd = fn(&Link, &str) -> Result<()>;
diff --git a/src/lib.rs b/src/lib.rs
index a3447e0..b7bee6f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,18 +1,24 @@
 mod errors;
 pub mod feed;
-mod fetch;
-mod history;
+pub mod fetch;
+pub mod history;
 pub mod prelude;
 mod subscriptions;
 
+use feed::{FeedFind, FeedGet};
+use fetch::FetchDownload;
+use history::{HistoryAdd, HistoryFind};
 use prelude::*;
 
 pub fn run(
     subscriptions: &str,
     history: &str,
     site: &str,
-    feed_find: feed::FeedFind,
-    feed_get: feed::FeedGet,
+    feed_find: FeedFind,
+    feed_get: FeedGet,
+    history_find: HistoryFind,
+    history_add: HistoryAdd,
+    fetch_download: FetchDownload,
 ) -> Result<()> {
     for channel_name in subscriptions::lines_from(subscriptions)? {
         let channel_name = channel_name?;
@@ -20,10 +26,10 @@ pub fn run(
         let feed_url = feed_find(site, &channel_name)?;
         for entry in feed_get(&feed_url)?.entries() {
             if let Some(link) = entry.links().get(0).cloned() {
-                if !history::is_already_downloaded(&link, history)? {
+                if !history_find(&link, history)? {
                     println!("Downloading {}: {}", &channel_name, entry.title().as_str());
-                    fetch::download_audio(&link)?;
-                    history::mark_as_downloaded(&link, history)?;
+                    fetch_download(&link)?;
+                    history_add(&link, history)?;
                 }
             }
         }
diff --git a/src/main.rs b/src/main.rs
index 4ebdc95..3e4a741 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -12,6 +12,9 @@ fn main() -> Result<()> {
         site,
         podal::feed::find,
         podal::feed::get,
+        podal::history::find,
+        podal::history::add,
+        podal::fetch::download,
     )?;
 
     println!("Done");