From 2d70d8994ef9caec7f5364621a5785a910b8977d Mon Sep 17 00:00:00 2001
From: Dan Jones <danjones@goodevilgenius.org>
Date: Fri, 25 Oct 2024 15:52:26 -0500
Subject: [PATCH] =?UTF-8?q?=F0=9F=9A=A7=20Add=20cool-down=20command?=
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---
 Taskfile.yml          | 14 +++++++++++++
 chill/chill.go        | 47 +++++++++++++++++++++++++++++++++++++++++++
 cmd/cool-down/main.go | 16 +++++++++++++++
 3 files changed, 77 insertions(+)
 create mode 100644 chill/chill.go
 create mode 100644 cmd/cool-down/main.go

diff --git a/Taskfile.yml b/Taskfile.yml
index e1e9ec8..77b972d 100644
--- a/Taskfile.yml
+++ b/Taskfile.yml
@@ -25,12 +25,26 @@ tasks:
       - task: cmd-build
         vars:
           CMD: convids
+  build-cool-down:
+    desc: Builds the cool-down command
+    source:
+      - cmd/cool-down/**/*.go
+      - chill/*.go
+      - cli/err/*.go
+      - cli/spin/*.go
+    generates:
+      - build/cool-down
+    cmds:
+      - task: cmd-build
+        vars:
+          CMD: cool-down
   build-all:
     desc: Builds all available commands
     sources:
       - "**/*.go"
     generates:
       - build/convids
+      - build/cool-down
     cmds:
       - task: cmd-build
         vars:
diff --git a/chill/chill.go b/chill/chill.go
new file mode 100644
index 0000000..adb7109
--- /dev/null
+++ b/chill/chill.go
@@ -0,0 +1,47 @@
+package chill
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"os"
+	"strconv"
+	"time"
+)
+
+var TempFile string = "/sys/class/thermal/thermal_zone2/temp"
+var MaxTemp int = 72500
+var Sleep = time.Second * 10
+var ErrChilledOut = errors.New("temperature dropped below threshold")
+
+func Chill(baseCtx context.Context) context.Context {
+	ctx, cancel := context.WithCancelCause(baseCtx)
+
+	go func() {
+		var by []byte
+		var err error
+		current := MaxTemp + 1
+
+		for current >= MaxTemp {
+			by, err = os.ReadFile(TempFile)
+			if err != nil {
+				cancel(err)
+				return
+			}
+
+			by = bytes.TrimSpace(by)
+			current, err = strconv.Atoi(string(by))
+			if err != nil {
+				cancel(err)
+				return
+			}
+			if current < MaxTemp {
+				break
+			}
+			time.Sleep(Sleep)
+		}
+		cancel(ErrChilledOut)
+	}()
+
+	return ctx
+}
diff --git a/cmd/cool-down/main.go b/cmd/cool-down/main.go
new file mode 100644
index 0000000..18487b1
--- /dev/null
+++ b/cmd/cool-down/main.go
@@ -0,0 +1,16 @@
+package main
+
+import (
+	"context"
+
+	"codeberg.org/danjones000/utils/chill"
+	e "codeberg.org/danjones000/utils/cli/err"
+	"codeberg.org/danjones000/utils/cli/spin"
+)
+
+func main() {
+	ctx := chill.Chill(context.Background())
+	s := spin.Spin(ctx, "Waiting for CPU to cool...")
+	err := s.Wait()
+	e.HandleErr(err)
+}