use directory from CLI Args

src/file/env.rs

@@ -11,18 +11,29 @@ pub struct FileEnv {
     pub open: FileOpenFn,
     pub append_line: FileAppendLineFn,
 }
-impl Default for FileEnv {
-    fn default() -> Self {
+impl FileEnv {
+    pub fn create(directory: String) -> Self {
+        let open_dir = directory.clone();
+        let append_dir = directory.clone();
         Self {
-            open: Box::new(|path| Ok(File::open(path)?)),
-            append_line: Box::new(|file_name, line| {
+            open: Box::new(move |file_name| {
+                let path = format!("{}/{}", &open_dir, file_name);
+                println!("opening {}", path);
+                let file = File::open(&path)?;
+                println!("opened {}", path);
+                Ok(file)
+            }),
+            append_line: Box::new(move |file_name, line| {
+                let path = format!("{}/{}", &append_dir, file_name);
+                println!("appending to {}", path);
                 let mut file = OpenOptions::new()
                     .write(true)
                     .append(true)
                     .create(true)
-                    .open(file_name)
+                    .open(&path)
                     .unwrap();
                 writeln!(file, "{}", line)?;
+                println!("appended to {}", path);
                 Ok(())
             }),
         }

src/file/read.rs

@@ -25,14 +25,15 @@ mod tests {
     #[test]
     fn can_load_file() -> Result<()> {
         //given
-        let (dir, file_name) = create_text_file(
-            "subscriptions.txt",
+        let file_name = "subscriptions.txt";
+        let dir = create_text_file(
+            file_name,
             include_bytes!("../../test/data/subscriptions.txt"),
         )?;
-        let file_env = FileEnv::default();
+        let file_env = FileEnv::create(dir.path().to_string_lossy().to_string());
 
         //when
-        let result = lines_from(&file_name, &file_env)?;
+        let result = lines_from(file_name, &file_env)?;
 
         //then
         drop(dir);
@@ -43,14 +44,15 @@ mod tests {
     #[test]
     fn ignores_blank_lines() -> Result<()> {
         //given
-        let (dir, file_name) = create_text_file(
-            "subscriptions.txt",
+        let file_name = "subscriptions.txt";
+        let dir = create_text_file(
+            file_name,
             include_bytes!("../../test/data/subscriptions-blank-line.txt"),
         )?;
-        let file_env = FileEnv::default();
+        let file_env = FileEnv::create(dir.path().to_string_lossy().to_string());
 
         //when
-        let result = lines_from(&file_name, &file_env)?;
+        let result = lines_from(file_name, &file_env)?;
 
         //then
         drop(dir);
@@ -61,14 +63,15 @@ mod tests {
     #[test]
     fn ignores_comments() -> Result<()> {
         //given
-        let (dir, file_name) = create_text_file(
-            "subscriptions.txt",
+        let file_name = "subscriptions.txt";
+        let dir = create_text_file(
+            file_name,
             include_bytes!("../../test/data/subscriptions-comment.txt"),
         )?;
-        let file_env = FileEnv::default();
+        let file_env = FileEnv::create(dir.path().to_string_lossy().to_string());
 
         //when
-        let result = lines_from(&file_name, &file_env)?;
+        let result = lines_from(file_name, &file_env)?;
 
         //then
         drop(dir);

src/history/add.rs

@@ -4,6 +4,7 @@ use crate::prelude::*;
 use super::Link;
 
 pub fn add(link: &Link, file_name: &str, e: &FileEnv) -> Result<()> {
+    println!("history::append::to {}", file_name);
     (e.append_line)(file_name, &link.href)?;
     Ok(())
 }
@@ -21,9 +22,11 @@ mod tests {
     #[test]
     fn creates_file_if_missing() -> Result<()> {
         //given
-        let (dir, file_name) =
-            create_text_file("download.txt", include_bytes!("../../test/data/empty.txt"))?;
-        std::fs::remove_file(&file_name)?;
+        let file_name = "download.txt";
+        let dir = create_text_file(file_name, include_bytes!("../../test/data/empty.txt"))?;
+        let path = format!("{}/{}", dir.path().to_string_lossy(), file_name);
+        println!("removing file {}", path);
+        std::fs::remove_file(path)?;
 
         let link = Link {
             href: "foo".to_string(),
@@ -34,10 +37,18 @@ mod tests {
             length: None,
         };
         //when
-        add(&link, &file_name, &FileEnv::default())?;
+        println!("about to add");
+        add(
+            &link,
+            &file_name,
+            &FileEnv::create(dir.path().to_string_lossy().to_string()),
+        )?;
+        println!("called add");
 
         //then
-        let content: Vec<String> = read_text_file(&file_name)?;
+        println!("about to read file contents");
+        let content: Vec<String> = read_text_file(&dir.path(), &file_name)?;
+        println!("read file contents");
         drop(dir);
 
         let expected = vec!["foo".to_string()];
@@ -49,10 +60,8 @@ mod tests {
     #[test]
     fn appends_to_exising_file() -> Result<()> {
         // given
-        let (dir, file_name) = create_text_file(
-            "download.txt",
-            include_bytes!("../../test/data/downloads.txt"),
-        )?;
+        let file_name = "download.txt";
+        let dir = create_text_file(file_name, include_bytes!("../../test/data/downloads.txt"))?;
 
         let link = Link {
             href: "foo".to_string(),
@@ -63,10 +72,14 @@ mod tests {
             length: None,
         };
         //when
-        add(&link, &file_name, &FileEnv::default())?;
+        add(
+            &link,
+            file_name,
+            &FileEnv::create(dir.path().to_string_lossy().to_string()),
+        )?;
 
         //then
-        let content: Vec<String> = read_text_file(&file_name)?;
+        let content: Vec<String> = read_text_file(&dir.path(), &file_name)?;
         drop(dir);
 
         let expected = vec![

src/history/find.rs

@@ -24,8 +24,8 @@ mod test {
     #[test]
     fn true_if_line_exists() -> Result<()> {
         //given
-        let (dir, file_name) =
-            create_text_file("file", include_bytes!("../../test/data/with-llamma.txt"))?;
+        let file_name = "file";
+        let dir = create_text_file(file_name, include_bytes!("../../test/data/with-llamma.txt"))?;
         let link = Link {
             href: "llamma".to_string(),
             rel: "".to_string(),
@@ -35,7 +35,11 @@ mod test {
             length: None,
         };
         //when
-        let result = find(&link, &file_name, &FileEnv::default())?;
+        let result = find(
+            &link,
+            file_name,
+            &FileEnv::create(dir.path().to_string_lossy().to_string()),
+        )?;
 
         //then
         drop(dir);
@@ -48,8 +52,11 @@ mod test {
     #[test]
     fn false_if_line_absent() -> Result<()> {
         //given
-        let (dir, file_name) =
-            create_text_file("file", include_bytes!("../../test/data/without-llamma.txt"))?;
+        let file_name = "file";
+        let dir = create_text_file(
+            file_name,
+            include_bytes!("../../test/data/without-llamma.txt"),
+        )?;
         let link = Link {
             href: "llamma".to_string(),
             rel: "".to_string(),
@@ -60,7 +67,11 @@ mod test {
         };
 
         //when
-        let result = find(&link, &file_name, &FileEnv::default())?;
+        let result = find(
+            &link,
+            file_name,
+            &FileEnv::create(dir.path().to_string_lossy().to_string()),
+        )?;
 
         //then
         drop(dir);
@@ -73,8 +84,9 @@ mod test {
     #[test]
     fn false_if_embedded_within_line() -> Result<()> {
         //given
-        let (dir, file_name) = create_text_file(
-            "file",
+        let file_name = "file";
+        let dir = create_text_file(
+            file_name,
             include_bytes!("../../test/data/with-embedded-llamma.txt"),
         )?;
         let link = Link {
@@ -87,7 +99,11 @@ mod test {
         };
 
         //when
-        let result = find(&link, &file_name, &FileEnv::default())?;
+        let result = find(
+            &link,
+            file_name,
+            &FileEnv::create(dir.path().to_string_lossy().to_string()),
+        )?;
 
         //then
         drop(dir);

src/lib.rs

@@ -58,11 +58,12 @@ mod tests {
         let (tx, rx) = mpsc::channel::<String>(); // channel to recieve notice of downloaded urls
 
         // two channels in subscriptions.txt
-        let (subs_dir, subs_file_name) =
-            create_text_file("subs", "@channel1\nignore me\n@channel2".as_bytes())?;
+        let subs_file_name = "subs";
+        let subs_dir =
+            create_text_file(subs_file_name, "@channel1\nignore me\n@channel2".as_bytes())?;
         // one item from each channel is already listed in the downloads.txt file
-        let (history_dir, history_file_name) =
-            create_text_file("history", "c1-f2\nc2-f3".as_bytes())?;
+        let history_file_name = "history";
+        let history_dir = create_text_file(history_file_name, "c1-f2\nc2-f3".as_bytes())?;
 
         let env = Env {
             network: NetworkEnv {
@@ -83,7 +84,24 @@ mod tests {
                 download_as_mp3: mock_network_download_as_mp3(tx),
             },
             file: FileEnv {
-                open: mock_file_open(vec![subs_file_name.clone(), history_file_name.clone()]),
+                open: mock_file_open(HashMap::from([
+                    (
+                        subs_file_name.to_string(),
+                        format!(
+                            "{}/{}",
+                            subs_dir.path().to_string_lossy(),
+                            subs_file_name.to_string()
+                        ),
+                    ),
+                    (
+                        history_file_name.to_string(),
+                        format!(
+                            "{}/{}",
+                            history_dir.path().to_string_lossy(),
+                            history_file_name.to_string()
+                        ),
+                    ),
+                ])),
                 append_line: mock_file_append_line(),
             },
         };

src/main.rs

@@ -18,7 +18,7 @@ fn main() -> Result<()> {
         site,
         podal::Env {
             network: NetworkEnv::default(),
-            file: FileEnv::default(),
+            file: FileEnv::create(args.directory),
         },
     )?;
 

src/test_utils.rs

@@ -2,6 +2,7 @@ use std::{
     collections::HashMap,
     fs::{read_to_string, File},
     io::Write,
+    path::Path,
     str::from_utf8,
     sync::mpsc::Sender,
 };
@@ -15,16 +16,18 @@ use crate::{
     prelude::*,
 };
 
-pub fn create_text_file(name: &str, data: &[u8]) -> Result<(TempDir, String)> {
+pub fn create_text_file(name: &str, data: &[u8]) -> Result<TempDir> {
     let data = from_utf8(data)?;
     let dir = tempdir()?;
     let filename = format!("{}", &dir.path().join(name).display());
     let file = File::create(&filename)?;
     write!(&file, "{data}")?;
-    Ok((dir, filename))
+    Ok(dir)
 }
 
-pub fn read_text_file(file_name: &str) -> Result<Vec<String>> {
+pub fn read_text_file(path: &Path, file_name: &str) -> Result<Vec<String>> {
+    let file_name = format!("{}/{}", path.to_str().unwrap(), file_name);
+    println!("test_utils::read_text_file: {}", file_name);
     Ok(read_to_string(file_name)?
         .lines()
         .map(String::from)
@@ -58,10 +61,11 @@ pub fn mock_network_fetch_as_bytes_with_rss_entries(
         }
     })
 }
-pub fn mock_file_open(real_paths: Vec<String>) -> FileOpenFn {
+pub fn mock_file_open(real_paths: HashMap<String, String>) -> FileOpenFn {
     Box::new(move |path: &str| {
-        if real_paths.contains(&path.to_string()) {
-            Ok(File::open(path)?)
+        if let Some(real_path) = real_paths.get(&path.to_string()) {
+            println!("opening {}", real_path);
+            Ok(File::open(real_path)?)
         } else {
             Err(Error::message(
                 format!("Not implemented: file_open: {}", path).as_str(),