1 files changed, 107 insertions, 0 deletions
diff --git a/.config/awesome/ui/fresnel/lenses/src/application.rs b/.config/awesome/ui/fresnel/lenses/src/application.rs
new file mode 100644
index 0000000..0cf6c1a
--- /dev/null
+++ b/.config/awesome/ui/fresnel/lenses/src/application.rs
@@ -0,0 +1,107 @@
+use std::{
+    fs::read_dir,
+    path::PathBuf,
+};
+
+use freedesktop_entry_parser as fd;
+use mlua::prelude::*;
+use parking_lot::Mutex;
+use rayon::prelude::*;
+use url::Url;
+
+use crate::entry::{
+    entries_to_lua_table,
+    Entry,
+};
+
+fn parse_entry<'a>(entry: fd::Entry, path: PathBuf) -> Result<Entry, ()> {
+    let section = entry.section("Desktop Entry");
+    let name = section.attr("Name").ok_or(())?.to_string();
+
+    if section.attr("Type").ok_or(())? != "Application" {
+        return Err(());
+    }
+
+    match section.attr("OnlyShowIn") {
+        Some(_) => return Err(()),
+        None => {}
+    }
+
+    match section.attr("Hidden") {
+        Some(_) => return Err(()),
+        None => {}
+    }
+
+    match section.attr("NoDisplay") {
+        Some(_) => return Err(()),
+        None => {}
+    }
+
+    let exec = section.attr("Exec").ok_or(())?.to_string();
+    let mut new_exec = exec.clone();
+    for (index, _) in exec.match_indices("%") {
+        match exec.chars().nth(index + 1).unwrap().to_ascii_lowercase() {
+            'i' => match section.attr("Icon") {
+                Some(icon) => new_exec.replace_range(index..index + 2, &format!("--icon {}", icon)),
+                None => {}
+            },
+            'c' => new_exec.replace_range(index..index + 2, &name),
+            'k' => new_exec.replace_range(index..index + 2, Url::from_file_path(&path)?.as_str()),
+
+            'f' | 'u' | 'v' | 'm' | 'd' | 'n' => new_exec.replace_range(index..index + 2, ""),
+            _ => continue,
+        }
+    }
+
+    Ok(Entry {
+        message: name,
+        exec: Some((
+            new_exec,
+            section
+                .attr("Terminal")
+                .unwrap_or("false")
+                .parse()
+                .map_err(drop)?,
+        )),
+        provider: "Application".to_string(),
+    })
+}
+
+pub fn query(lua: &Lua, input: String) -> LuaResult<LuaTable> {
+    let applications_dir = "/usr/share/applications";
+    let entries = read_dir(applications_dir)?
+        .map(|result| result.map(|e| e.path()))
+        .collect::<Result<Vec<_>, std::io::Error>>()?;
+
+    let entries = entries
+        .into_iter()
+        .filter(|e| match e.extension() {
+            Some(ext) if ext == "desktop" => true,
+            None | _ => false,
+        })
+        .collect::<Vec<_>>();
+
+    let mut parsed_entries: Mutex<Vec<Entry>> = Mutex::new(Vec::new());
+
+    entries.into_par_iter().for_each(|path| {
+        let entry = match fd::parse_entry(&path) {
+            Ok(entry) => entry,
+            Err(_) => return,
+        };
+
+        match parse_entry(entry, path) {
+            Ok(parsed_entry) => parsed_entries.lock().push(parsed_entry),
+            Err(_) => return,
+        }
+    });
+
+    Ok(entries_to_lua_table(
+        parsed_entries
+            .get_mut()
+            .iter()
+            .filter(|entry| entry.message.to_lowercase().contains(&input))
+            .map(|entry| (*entry).clone())
+            .collect(),
+        lua,
+    ))
+}