Started adding error handling, fixed directories not being created if they do not exist, added config file

src/config_file/mod.rs

@@ -0,0 +1,47 @@
+use std::path::PathBuf;
+use std::error::Error;
+use std::env;
+use std::fs;
+
+use crate::copy_directory;
+
+pub struct ConfigFile {
+    pub manager_path: PathBuf,
+    pub system_path: PathBuf,
+    is_dir: bool,
+}
+
+
+impl ConfigFile {
+    pub fn new(rel_git_location: PathBuf, sys_location: PathBuf) -> Result<Self, Box<dyn Error>> {
+
+        let home_dir = PathBuf::from(env::var("HOME").expect("$HOME not set"));
+        let manager_dir = home_dir.join(".dotfiles/");
+        
+        let manager_path = manager_dir.join(rel_git_location);
+        let system_path  = sys_location;
+
+        let is_dir = fs::metadata(&manager_path)?.is_dir(); 
+
+        Ok(Self { manager_path, system_path, is_dir })
+    }
+
+    pub fn copy_config(&self, to_sys: bool) -> Result<(), Box<dyn Error>> {
+
+        let (curr, dest) = if to_sys {
+            (&self.manager_path, &self.system_path)
+        } else {
+            (&self.system_path, &self.manager_path)
+        };
+
+        if !self.is_dir {
+            println!("Copying file");
+            fs::copy(curr, dest)?;
+            Ok(())
+        } else {
+            println!("Starting Copy Dir");
+            copy_directory(curr, dest)?;
+            Ok(())
+        }
+    }
+}