From 62049f094ac0b270aa4464127a6a3ebb405b6c0c Mon Sep 17 00:00:00 2001
From: Fabian Kirchner <kirchner@posteo.de>
Date: Tue, 13 Aug 2024 12:54:27 +0200
Subject: feat: add thermal info

---
 app/Main.hs   |  3 ++-
 app/Sensor.hs | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/app/Main.hs b/app/Main.hs
index aadae2d..216b3ce 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -193,7 +193,8 @@ createWindow args = do
               [pure (lit (if args.icons then "\xf1638  " else "io ")), lit <$> io],
               [pure (lit (if args.icons then "\xf0200  " else "net ")), lit <$> net],
               [pure (lit " "), lit <$> Sensor.snd],
-              [pure (lit "  "), lit <$> bat],
+              [pure (lit " "), lit <$> thermal],
+              [pure (lit " "), lit <$> bat],
               [pure (lit " "), lit <$> weatherForecast],
               [pure (lit " "), lit <$> date, pure (lit ", "), lit <$> time],
               []
diff --git a/app/Sensor.hs b/app/Sensor.hs
index 612b2bc..b6cfba5 100644
--- a/app/Sensor.hs
+++ b/app/Sensor.hs
@@ -26,6 +26,7 @@ module Sensor
     Sensor.snd,
     disk,
     date,
+    thermal,
     time,
     wmName,
     weatherForecast,
@@ -116,6 +117,25 @@ diagram n sf = S.feedbackS [] $ proc ((), xs) -> do
   x <- sf -< ()
   returnA -< (P.diagram n (reverse (x : xs)), take (2 * (n - 1) + 1) (x : xs))
 
+data Thermal = Thermal deriving (Show)
+
+instance (S.MonadSensor m) => S.Aggregate m Thermal Int where
+  aggregate _ = forever do S.yield =<< parse <* sleep
+    where
+      parse = liftIO do
+        is <- listDirectory "/sys/class/thermal"
+        maximum <$> mapM (parse1 . ("/sys/class/thermal" </>)) is
+      parse1 fp = do
+        (choice 0 [readFile (fp </> "temp") (pure . read . strip)])
+
+thermal :: (S.MonadSensor m) => S.Sensor m () String
+thermal = do
+  temp <- S.sensor Thermal
+  pure (printf "%.1f" (value temp))
+  where
+    value :: Int -> Float
+    value temp = fromIntegral temp / 1000.0
+
 data IoStat = IoStat deriving (Show)
 
 instance (S.MonadSensor m) => S.Aggregate m IoStat Int where
-- 
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