Finish up error handling

src/lib.rs

@@ -1,4 +1,6 @@
 use std::error::Error;
+use std::fmt;
+
 use clap::ArgMatches;
 
 use crate::config::config::Config;
@@ -8,7 +10,7 @@ pub mod dotfile;
 pub mod args;
 
 
-pub fn run(args: ArgMatches, config: Config) -> Result<(), Box<dyn Error>> {
+pub fn run(args: ArgMatches, config: Config) -> Result<(), ManagerError> {
 
     let copy_to_sys = args.get_flag("from-git");
 
@@ -17,7 +19,7 @@ pub fn run(args: ArgMatches, config: Config) -> Result<(), Box<dyn Error>> {
     let valid_dotfiles: Vec<_> = dotfiles.iter().filter_map(|dotfile| match dotfile {
         Ok(dotfile) => Some(dotfile),
         Err(e) => {
-            println!("Failed to read a dotfile: {}", e);
+            eprintln!("Failed to read a dotfile: {:?}", e);
             None
         },
     }).collect();
@@ -26,7 +28,7 @@ pub fn run(args: ArgMatches, config: Config) -> Result<(), Box<dyn Error>> {
 
     copy_results.for_each(|result| {
         match result.0 {
-            Err(e) => println!("Failed to copy dotfile: {}", e),
+            Err(e) => println!("Failed to copy dotfile: {:?}", e),
             _ => (),
         }
     });
@@ -35,3 +37,37 @@ pub fn run(args: ArgMatches, config: Config) -> Result<(), Box<dyn Error>> {
 
     Ok(())
 }
+
+
+#[derive(Debug)]
+pub enum ManagerError {
+    DotfileCopyError(dotfile::dotfile::DotfileError),
+    ConfigParseError(config::config::ConfigParseError),
+}
+
+impl Error for ManagerError {}
+
+impl fmt::Display for ManagerError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            ManagerError::DotfileCopyError(copy_error) => {
+                write!(f, "{}", copy_error)
+            },
+            ManagerError::ConfigParseError(parse_error) => {
+                write!(f, "{}", parse_error)
+            }
+        }
+    }
+}
+
+impl From<dotfile::dotfile::DotfileError> for ManagerError {
+    fn from(error: dotfile::dotfile::DotfileError) -> ManagerError {
+        ManagerError::DotfileCopyError(error)
+    }
+}
+
+impl From<config::config::ConfigParseError> for ManagerError {
+    fn from(error: config::config::ConfigParseError) -> ManagerError {
+        ManagerError::ConfigParseError(error)
+    }
+}

src/main.rs

@@ -1,19 +1,15 @@
 use std::path::PathBuf;
-use std::error::Error;
 
 use dotfiles_manager::args::args;
 use dotfiles_manager::config::config::Config;
 
 
-fn main() -> Result<(), Box<dyn Error>> {
+fn main() -> Result<(), dotfiles_manager::ManagerError> {
     let args = args::parse_args();
 
     let program_config = Config::parse(PathBuf::from("/home/eesim/.config/dotfiles/config"))?;
 
-    if let Err(e) = dotfiles_manager::run(args, program_config) {
-        panic!("Error: {}", e)
-    };
-
-    Ok(())
+    dotfiles_manager::run(args, program_config)
 
 }
+