Fix: stop making http request per each keypress

2 files changed, 51 insertions, 16 deletions

diff --git a/helpfuncs.go b/helpfuncs.go
index 55df7c1..d8c28af 100644
--- a/helpfuncs.go
+++ b/helpfuncs.go
@@ -12,6 +12,7 @@ import (
 	"path/filepath"
 	"slices"
 	"strings"
+	"time"
 	"unicode"
 
 	"math/rand/v2"
@@ -19,6 +20,46 @@ import (
 	"github.com/rivo/tview"
 )
 
+// Cached model color - updated by background goroutine
+var cachedModelColor string = "orange"
+
+// startModelColorUpdater starts a background goroutine that periodically updates
+// the cached model color. Only runs HTTP requests for local llama.cpp APIs.
+func startModelColorUpdater() {
+	go func() {
+		ticker := time.NewTicker(5 * time.Second)
+		defer ticker.Stop()
+
+		// Initial check
+		updateCachedModelColor()
+
+		for range ticker.C {
+			updateCachedModelColor()
+		}
+	}()
+}
+
+// updateCachedModelColor updates the global cachedModelColor variable
+func updateCachedModelColor() {
+	if !isLocalLlamacpp() {
+		cachedModelColor = "orange"
+		return
+	}
+
+	// Check if model is loaded
+	loaded, err := isModelLoaded(chatBody.Model)
+	if err != nil {
+		// On error, assume not loaded (red)
+		cachedModelColor = "red"
+		return
+	}
+	if loaded {
+		cachedModelColor = "green"
+	} else {
+		cachedModelColor = "red"
+	}
+}
+
 func isASCII(s string) bool {
 	for i := 0; i < len(s); i++ {
 		if s[i] > unicode.MaxASCII {
@@ -132,8 +173,8 @@ func colorText() {
 }
 
 func updateStatusLine() {
-	statusLineWidget.SetText(makeStatusLine())
-	helpView.SetText(fmt.Sprintf(helpText, makeStatusLine()))
+	status := makeStatusLine()
+	statusLineWidget.SetText(status)
 }
 
 func initSysCards() ([]string, error) {
@@ -275,22 +316,11 @@ func isLocalLlamacpp() bool {
 	return host == "localhost" || host == "127.0.0.1" || host == "::1"
 }
 
-// getModelColor returns the color tag for the model name based on its load status.
+// getModelColor returns the cached color tag for the model name.
+// The cached value is updated by a background goroutine every 5 seconds.
 // For non-local models, returns orange. For local llama.cpp models, returns green if loaded, red if not.
 func getModelColor() string {
-	if !isLocalLlamacpp() {
-		return "orange"
-	}
-	// Check if model is loaded
-	loaded, err := isModelLoaded(chatBody.Model)
-	if err != nil {
-		// On error, assume not loaded (red)
-		return "red"
-	}
-	if loaded {
-		return "green"
-	}
-	return "red"
+	return cachedModelColor
 }
 
 func makeStatusLine() string {
diff --git a/tui.go b/tui.go
index 2c4fe67..b45f3e8 100644
--- a/tui.go
+++ b/tui.go
@@ -177,6 +177,9 @@ Press <Enter> or 'x' to return
 )
 
 func init() {
+	// Start background goroutine to update model color cache
+	startModelColorUpdater()
+
 	tview.Styles = colorschemes["default"]
 	app = tview.NewApplication()
 	pages = tview.NewPages()
@@ -749,6 +752,8 @@ func init() {
 		}
 		if event.Key() == tcell.KeyF12 {
 			// help window cheatsheet
+			// Update help text with current status before showing
+			helpView.SetText(fmt.Sprintf(helpText, makeStatusLine()))
 			pages.AddPage(helpPage, helpView, true, true)
 			return nil
 		}