phase 3

src/parsing.rs

@@ -1,5 +1,4 @@
 use std::ffi::OsString;
-use std::io;
 use std::path::{Path, PathBuf};
 use clap::{Parser, Subcommand};
 use crate::error::DrawerError;
@@ -94,6 +93,31 @@ fn resolve_key(key: Option<PathBuf>) -> KeyType {
 }
 
 impl DrawerOperation {
+    pub fn perform(&self) -> Result<(), DrawerError> {
+        self.validate()?;
+        match self.operation_type {
+            OperationType::Open => self.perform_open(),
+            OperationType::Close => self.perform_close(),
+        }
+    }
+
+    fn perform_open(&self) -> Result<(), DrawerError> {
+        todo!()
+    }
+
+    fn perform_close(&self) -> Result<(), DrawerError> {
+        let mut buf: Vec<u8> = Vec::new();
+        {
+            let mut archive = tar::Builder::new(&mut buf);
+            archive.append_dir_all(".", &self.target_path)
+                .map_err(|_| DrawerError::TarFailed)?;
+            archive.finish()
+                .map_err(|_| DrawerError::TarFailed)?;
+        }
+        std::fs::write(&self.drawer_file, &buf)
+            .map_err(|_| DrawerError::WriteFailed(self.drawer_file.clone()))
+    }
+
     pub fn validate(&self) -> Result<(), DrawerError> {
         if self.drawer_file.extension().and_then(|e| e.to_str()) != Some("drawer") {
             return Err(DrawerError::DrawerFileInvalidExtension(self.drawer_file.clone()));