1 files changed, 84 insertions, 0 deletions
diff --git a/src/data_collection/temperature.rs b/src/data_collection/temperature.rs
new file mode 100644
index 00000000..db490027
--- /dev/null
+++ b/src/data_collection/temperature.rs
@@ -0,0 +1,84 @@
+//! Data collection for temperature metrics.
+//!
+//! For Linux and macOS, this is handled by Heim.
+//! For Windows, this is handled by sysinfo.
+
+cfg_if::cfg_if! {
+    if #[cfg(target_os = "linux")] {
+        pub mod linux;
+        pub use self::linux::*;
+    } else if #[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "windows", target_os = "android", target_os = "ios"))] {
+        pub mod sysinfo;
+        pub use self::sysinfo::*;
+    }
+}
+
+use crate::app::filter::Filter;
+
+#[derive(Default, Debug, Clone)]
+pub struct TempHarvest {
+    pub name: String,
+    pub temperature: Option<f32>,
+}
+
+#[derive(Clone, Debug, Copy, PartialEq, Eq, Default)]
+pub enum TemperatureType {
+    #[default]
+    Celsius,
+    Kelvin,
+    Fahrenheit,
+}
+
+impl TemperatureType {
+    /// Given a temperature in Celsius, covert it if necessary for a different unit.
+    pub fn convert_temp_unit(&self, temp_celsius: f32) -> f32 {
+        fn convert_celsius_to_kelvin(celsius: f32) -> f32 {
+            celsius + 273.15
+        }
+
+        fn convert_celsius_to_fahrenheit(celsius: f32) -> f32 {
+            (celsius * (9.0 / 5.0)) + 32.0
+        }
+
+        match self {
+            TemperatureType::Celsius => temp_celsius,
+            TemperatureType::Kelvin => convert_celsius_to_kelvin(temp_celsius),
+            TemperatureType::Fahrenheit => convert_celsius_to_fahrenheit(temp_celsius),
+        }
+    }
+}
+
+pub fn is_temp_filtered(filter: &Option<Filter>, text: &str) -> bool {
+    if let Some(filter) = filter {
+        let mut ret = filter.is_list_ignored;
+        for r in &filter.list {
+            if r.is_match(text) {
+                ret = !filter.is_list_ignored;
+                break;
+            }
+        }
+        ret
+    } else {
+        true
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use crate::data_collection::temperature::TemperatureType;
+
+    #[test]
+    fn temp_conversions() {
+        const TEMP: f32 = 100.0;
+
+        assert_eq!(
+            TemperatureType::Celsius.convert_temp_unit(TEMP),
+            TEMP,
+            "celsius to celsius is the same"
+        );
+
+        assert_eq!(TemperatureType::Kelvin.convert_temp_unit(TEMP), 373.15);
+
+        assert_eq!(TemperatureType::Fahrenheit.convert_temp_unit(TEMP), 212.0);
+    }
+}