1 files changed, 36 insertions, 0 deletions
diff --git a/.config/awesome/quarrel/native/src/lenses/calculator.rs b/.config/awesome/quarrel/native/src/lenses/calculator.rs
new file mode 100644
index 0000000..89b738e
--- /dev/null
+++ b/.config/awesome/quarrel/native/src/lenses/calculator.rs
@@ -0,0 +1,36 @@
+// use meval::eval_str;
+use cpc::{
+    eval,
+    units::Unit,
+};
+use mlua::prelude::*;
+
+use crate::lenses::entry::{
+    entries_to_lua_table,
+    Entry,
+};
+
+pub fn query<'a>(lua: &Lua, input: String) -> LuaResult<LuaTable> {
+    let result = match eval(input.trim(), true, Unit::Celsius, false) {
+        Ok(result) => {
+            format!(
+                "{}{}",
+                result.value,
+                match result.unit {
+                    Unit::NoUnit => "".to_owned(),
+                    _ => format!(" {:?}", result.unit),
+                }
+            )
+        }
+        Err(_) => return lua.create_table(),
+    };
+
+    Ok(entries_to_lua_table(
+        vec![Entry {
+            message: result,
+            exec: None,
+            provider: "Calculator".to_string(),
+        }],
+        lua,
+    ))
+}