Improve filename parsing for spammy suffixes

src/parse.rs

@@ -40,8 +40,9 @@ pub fn parse_filename(path: &Path) -> FileHints {
 
     let year = extract_year(&stem);
     let cleaned = strip_bracketed(&stem);
+    let cleaned_for_tokens = strip_dash_suffix(&cleaned);
     let alt_titles = extract_alt_titles(&cleaned, year);
-    let tokens = tokenize(&cleaned, year);
+    let tokens = strip_noise_tokens(tokenize(&cleaned_for_tokens, year));
 
     let title = if tokens.is_empty() {
         let mut fallback = cleaned.clone();
@@ -79,6 +80,32 @@ fn strip_bracketed(raw: &str) -> String {
     without_round.to_string()
 }
 
+fn strip_dash_suffix(raw: &str) -> String {
+    let Some((left, right)) = raw.split_once(" - ") else {
+        return raw.to_string();
+    };
+    if should_strip_dash_suffix(right) {
+        left.trim().to_string()
+    } else {
+        raw.to_string()
+    }
+}
+
+fn should_strip_dash_suffix(right: &str) -> bool {
+    let trimmed = right.trim();
+    if trimmed.is_empty() {
+        return false;
+    }
+    let lower = trimmed.to_ascii_lowercase();
+    if lower.contains("http://") || lower.contains("https://") || lower.contains("www.") {
+        return true;
+    }
+    if trimmed.contains('.') && !trimmed.contains(' ') {
+        return true;
+    }
+    false
+}
+
 fn extract_alt_titles(raw: &str, year: Option<i32>) -> Vec<String> {
     let mut alt_titles = Vec::new();
     if let Some((left, right)) = raw.split_once(" - ") {
@@ -122,6 +149,37 @@ fn tokenize(raw: &str, year: Option<i32>) -> Vec<String> {
     tokens
 }
 
+fn strip_noise_tokens(mut tokens: Vec<String>) -> Vec<String> {
+    if tokens.is_empty() {
+        return tokens;
+    }
+
+    if let Some(first) = tokens.first() {
+        let lower = first.to_ascii_lowercase();
+        if matches!(lower.as_str(), "watch" | "download") {
+            tokens.remove(0);
+        }
+    }
+
+    if tokens.len() >= 2 {
+        let last = tokens[tokens.len() - 1].to_ascii_lowercase();
+        let prev = tokens[tokens.len() - 2].to_ascii_lowercase();
+        if prev == "for" && last == "free" {
+            tokens.pop();
+            tokens.pop();
+        }
+    }
+
+    if let Some(last) = tokens.last() {
+        let lower = last.to_ascii_lowercase();
+        if matches!(lower.as_str(), "online" | "free" | "download") {
+            tokens.pop();
+        }
+    }
+
+    tokens
+}
+
 #[cfg(test)]
 mod tests {
     use super::parse_filename;
@@ -177,4 +235,12 @@ mod tests {
         );
         assert_eq!(hints.year, Some(2022));
     }
+
+    #[test]
+    fn strips_watch_for_free_domain_suffix() {
+        let path = Path::new("Watch VideoName 2025 HD for free - website.tld.mp4");
+        let hints = parse_filename(path);
+        assert_eq!(hints.title.as_deref(), Some("VideoName"));
+        assert_eq!(hints.year, Some(2025));
+    }
 }