refactor(paste): associate directories with the paste types

src/main.rs

@@ -1,6 +1,7 @@
 use actix_web::middleware::Logger;
 use actix_web::{App, HttpServer};
 use rustypaste::config::Config;
+use rustypaste::paste::PasteType;
 use rustypaste::server;
 use std::env;
 use std::fs;
@@ -14,7 +15,7 @@ async fn main() -> IoResult<()> {
         .expect("failed to parse config");
     let server_config = config.server.clone();
     fs::create_dir_all(&server_config.upload_path)?;
-    fs::create_dir_all(&server_config.upload_path.join("url"))?;
+    fs::create_dir_all(PasteType::Url.get_path(&server_config.upload_path))?;
     let mut http_server = HttpServer::new(move || {
         App::new()
             .data(config.clone())

src/paste.rs

@@ -3,7 +3,7 @@ use crate::header::ContentDisposition;
 use std::convert::TryFrom;
 use std::fs::{self, File};
 use std::io::{Error as IoError, ErrorKind as IoErrorKind, Result as IoResult, Write};
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::str;
 use url::Url;
 
@@ -29,6 +29,21 @@ impl<'a> TryFrom<&'a ContentDisposition> for PasteType {
     }
 }
 
+impl PasteType {
+    /// Returns the corresponding directory of the paste type.
+    pub fn get_dir(&self) -> String {
+        match self {
+            Self::File => String::new(),
+            Self::Url => String::from("url"),
+        }
+    }
+
+    /// Returns the given path with [`directory`](Self::get_dir) adjoined.
+    pub fn get_path(&self, path: &Path) -> PathBuf {
+        path.join(self.get_dir())
+    }
+}
+
 /// Representation of a single paste.
 #[derive(Debug)]
 pub struct Paste {
@@ -110,8 +125,10 @@ impl Paste {
             .paste
             .random_url
             .generate()
-            .unwrap_or_else(|| String::from("url"));
+            .unwrap_or_else(|| PasteType::Url.get_dir());
-        let path = config.server.upload_path.join("url").join(&file_name);
+        let path = PasteType::Url
+            .get_path(&config.server.upload_path)
+            .join(&file_name);
         fs::write(&path, url.to_string())?;
         Ok(file_name)
     }
@@ -182,7 +199,7 @@ mod tests {
         assert_eq!("test", fs::read_to_string(&file_name)?);
         fs::remove_file(file_name)?;
 
-        fs::create_dir_all(config.server.upload_path.join("url"))?;
+        fs::create_dir_all(PasteType::Url.get_path(&config.server.upload_path))?;
 
         config.paste.random_url.enabled = true;
         let url = String::from("https://orhun.dev/");
@@ -191,7 +208,9 @@ mod tests {
             type_: PasteType::Url,
         };
         let file_name = paste.store_url(&config)?;
-        let file_path = config.server.upload_path.join("url").join(&file_name);
+        let file_path = PasteType::Url
+            .get_path(&config.server.upload_path)
+            .join(&file_name);
         assert_eq!(url, fs::read_to_string(&file_path)?);
         fs::remove_file(file_path)?;
 
@@ -202,7 +221,7 @@ mod tests {
         };
         assert!(paste.store_url(&config).is_err());
 
-        fs::remove_dir(config.server.upload_path.join("url"))?;
+        fs::remove_dir(PasteType::Url.get_path(&config.server.upload_path))?;
 
         Ok(())
     }

src/server.rs

@@ -29,9 +29,11 @@ async fn serve(
 ) -> Result<HttpResponse, Error> {
     let mut path = config.server.upload_path.join(&*file);
     let mut paste_type = PasteType::File;
-    for (type_, alt_path) in &[(PasteType::Url, "url")] {
+    for type_ in &[PasteType::Url] {
-        if !path.exists() || path.file_name().map(|v| v.to_str()).flatten() == Some(alt_path) {
+        if !path.exists()
-            path = config.server.upload_path.join(alt_path).join(&*file);
+            || path.file_name().map(|v| v.to_str()).flatten() == Some(&type_.get_dir())
+        {
+            path = config.server.upload_path.join(type_.get_dir()).join(&*file);
             paste_type = *type_;
             break;
         }