static regular expressions; if filename contains both episode number and year, favour episode over movie; print out some help text about videos

Cargo.lock

@@ -49,6 +49,7 @@ version = "0.1.0"
 dependencies = [
  "dirs",
  "fs_extra",
+ "lazy_static",
  "mp3-metadata",
  "regex",
 ]
@@ -70,6 +71,12 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
 [[package]]
 name = "libc"
 version = "0.2.108"

Cargo.toml

@@ -8,5 +8,6 @@ edition = "2021"
 [dependencies]
 dirs         = "^4.0.0"
 fs_extra     = "^1.2.0"
+lazy_static  = "^1.4.0"
 mp3-metadata = "^0.3.3"
 regex        = "^1.6.0"

src/main.rs

@@ -2,6 +2,7 @@ use std::fs::DirEntry;
 use std::io;
 use std::path::PathBuf;
 
+use lazy_static::lazy_static;
 use regex::Regex;
 
 fn home_dir() -> PathBuf {
@@ -101,23 +102,41 @@ fn handle_mp3(file: DirEntry) {
     }
 }
 
+/// if filename contains something like `(1971)` or `[2003]` it's a movie
+fn is_movie(file: &DirEntry) -> bool {
+    lazy_static! {
+        static ref MOVIE: Regex = Regex::new(r"\(\d{4}\)|\[\d{4}]").unwrap();
+    }
+
+    MOVIE.is_match(file.file_name().to_str().unwrap())
+}
+
+/// if filename contains something like "S03E21" it's a TV programme
+fn is_tv_episode(file: &DirEntry) -> bool {
+    lazy_static! {
+        static ref TV: Regex = Regex::new(r"s\d{2}e\d{2}").unwrap();
+    }
+
+    TV.is_match(file.file_name().to_str().unwrap())
+}
+
 fn handle_video(file: DirEntry) {
     let mut destination = vec!["Videos"];
 
-    // if filename contains something like "(1971)" or "[2003]" it's a movie
+    if is_tv_episode(&file) {
-    // if filename contains something like "S03E21" it's a TV programme
+        destination.push("TV");
-
+    } else if is_movie(&file) {
-    let movie = Regex::new(r"\(\d{4}\)|\[\d{4}]").unwrap();
-    let tv    = Regex::new(r"s\d{2}e\d{2}").unwrap();
-
-    if movie.is_match(file.file_name().to_str().unwrap()) {
         // todo match decade?
         destination.push("Movies");
-    } else if tv.is_match(file.file_name().to_str().unwrap()) {
-        destination.push("TV");
     }
 
+    println!(
+        "Move to ~/{}/{}?", destination.join("/"), file.file_name().to_str().unwrap()
+    );
+
+    if yes() {
         move_file(file.path(), create_dir_if_not_exists(destination));
+    }
 }
 
 fn handle_dir(path: PathBuf) {