app restructuring

src/params.rs

@@ -0,0 +1,40 @@
+use std::path::PathBuf;
+use clap::Parser;
+use anyhow::Result;
+use std::fs;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+pub struct App {
+    /// Filetypes to deduplicate (default = all)
+    #[arg(short, long)]
+    pub types: Option<String>,
+    /// Run Deduplicator on dir different from pwd
+    #[arg(long)]
+    pub dir: Option<PathBuf>,
+    /// Don't use cache for indexing files (default = true)
+    #[arg(long, short)]
+    pub nocache: bool,
+}
+
+impl App {
+    pub fn get_directory(&self) -> Result<String> {
+        let dir_string: String = self
+            .dir
+            .clone()
+            .unwrap_or(std::env::current_dir()?)
+            .as_os_str()
+            .to_str()
+            .unwrap()
+            .to_string();
+
+        let dir_pathbuf = PathBuf::from(&dir_string);
+        let dir = fs::canonicalize(&dir_pathbuf)?
+            .as_os_str()
+            .to_str()
+            .unwrap()
+            .to_string();
+
+        Ok(dir)
+    }
+}