feat: add plugin-url for URL handling and open in browser functionality

crates/plugins/plugin-url/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "plugin-url"
+version = "0.1.0"
+edition = "2024"
+
+[[bin]]
+name = "k-launcher-plugin-url"
+path = "src/main.rs"
+
+[dependencies]
+serde = { workspace = true }
+serde_json = { workspace = true }

crates/plugins/plugin-url/src/main.rs

@@ -0,0 +1,130 @@
+use std::io::{self, BufRead, Write};
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Deserialize)]
+struct Query {
+    query: String,
+}
+
+#[derive(Serialize)]
+struct Action {
+    r#type: &'static str,
+    cmd: String,
+}
+
+#[derive(Serialize)]
+struct Result {
+    id: &'static str,
+    title: &'static str,
+    description: String,
+    score: u32,
+    action: Action,
+}
+
+fn is_url(query: &str) -> bool {
+    query.starts_with("http://") || query.starts_with("https://") || query.starts_with("www.")
+}
+
+fn normalize(query: &str) -> String {
+    if query.starts_with("www.") {
+        format!("https://{query}")
+    } else {
+        query.to_string()
+    }
+}
+
+fn search(query: &str) -> Vec<Result> {
+    if !is_url(query) {
+        return vec![];
+    }
+    let url = normalize(query);
+    vec![Result {
+        id: "url-open",
+        title: "Open in Browser",
+        description: url.clone(),
+        score: 95,
+        action: Action {
+            r#type: "SpawnProcess",
+            cmd: format!("xdg-open {url}"),
+        },
+    }]
+}
+
+fn main() -> io::Result<()> {
+    let stdin = io::stdin();
+    let stdout = io::stdout();
+    let mut out = stdout.lock();
+
+    for line in stdin.lock().lines() {
+        let line = line?;
+        let q: Query = match serde_json::from_str(&line) {
+            Ok(q) => q,
+            Err(_) => continue,
+        };
+        let results = search(&q.query);
+        writeln!(out, "{}", serde_json::to_string(&results).unwrap())?;
+        out.flush()?;
+    }
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn is_url_https() {
+        assert!(is_url("https://example.com"));
+    }
+
+    #[test]
+    fn is_url_http() {
+        assert!(is_url("http://example.com"));
+    }
+
+    #[test]
+    fn is_url_www() {
+        assert!(is_url("www.foo.com"));
+    }
+
+    #[test]
+    fn is_url_plain() {
+        assert!(!is_url("firefox"));
+    }
+
+    #[test]
+    fn is_url_empty() {
+        assert!(!is_url(""));
+    }
+
+    #[test]
+    fn normalize_www() {
+        assert_eq!(normalize("www.foo.com"), "https://www.foo.com");
+    }
+
+    #[test]
+    fn normalize_https() {
+        assert_eq!(normalize("https://example.com"), "https://example.com");
+    }
+
+    #[test]
+    fn search_returns_result() {
+        let results = search("https://example.com");
+        assert_eq!(results.len(), 1);
+        assert_eq!(results[0].action.cmd, "xdg-open https://example.com");
+    }
+
+    #[test]
+    fn search_returns_empty() {
+        assert!(search("firefox").is_empty());
+    }
+
+    #[test]
+    fn result_serializes() {
+        let results = search("https://example.com");
+        let json = serde_json::to_string(&results).unwrap();
+        assert!(json.contains("SpawnProcess"));
+        assert!(json.contains("xdg-open"));
+    }
+}