From 372e49199b58281bf1c7f75dfa2835189bc61383 Mon Sep 17 00:00:00 2001
From: Grail Finder <wohilas@gmail.com>
Date: Tue, 17 Feb 2026 13:15:09 +0300
Subject: Feat: collapse/expand thinking blocks with alt+t

---
 bot.go  | 10 +++++++++-
 main.go |  1 +
 tui.go  | 15 +++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/bot.go b/bot.go
index 0ac94f7..61d33fa 100644
--- a/bot.go
+++ b/bot.go
@@ -1087,7 +1087,15 @@ func chatToTextSlice(messages []models.RoleMsg, showSys bool) []string {
 
 func chatToText(messages []models.RoleMsg, showSys bool) string {
 	s := chatToTextSlice(messages, showSys)
-	return strings.Join(s, "\n")
+	text := strings.Join(s, "\n")
+
+	// Collapse thinking blocks if enabled
+	if thinkingCollapsed {
+		placeholder := "[yellow::i][thinking... (press Alt+T to expand)][-:-:-]"
+		text = thinkRE.ReplaceAllString(text, placeholder)
+	}
+
+	return text
 }
 
 func removeThinking(chatBody *models.ChatBody) {
diff --git a/main.go b/main.go
index 45f0d4b..8dc4752 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ var (
 	injectRole          = true
 	selectedIndex       = int(-1)
 	shellMode           = false
+	thinkingCollapsed   = false
 	indexLineCompletion = "F12 to show keys help | llm turn: [%s:-:b]%v[-:-:-] (F6) | chat: [orange:-:b]%s[-:-:-] (F1) | toolUseAdviced: [%s:-:b]%v[-:-:-] (ctrl+k) | model: [orange:-:b]%s[-:-:-] (ctrl+l) | skip LLM resp: [%s:-:b]%v[-:-:-] (F10)\nAPI: [orange:-:b]%s[-:-:-] (ctrl+v) | recording: [%s:-:b]%v[-:-:-] (ctrl+r) | writing as: [orange:-:b]%s[-:-:-] (ctrl+q) | bot will write as [orange:-:b]%s[-:-:-] (ctrl+x) | role injection (alt+7) [%s:-:b]%v[-:-:-]"
 	focusSwitcher       = map[tview.Primitive]tview.Primitive{}
 )
diff --git a/tui.go b/tui.go
index 31f4091..2883511 100644
--- a/tui.go
+++ b/tui.go
@@ -96,6 +96,7 @@ var (
 [yellow]Alt+7[white]: toggle role injection (inject role in messages)
 [yellow]Alt+8[white]: show char img or last picked img
 [yellow]Alt+9[white]: warm up (load) selected llama.cpp model
+[yellow]Alt+t[white]: toggle thinking blocks visibility (collapse/expand <think> blocks)
 
 === scrolling chat window (some keys similar to vim) ===
 [yellow]arrows up/down and j/k[white]: scroll up and down
@@ -831,6 +832,20 @@ func init() {
 			injectRole = !injectRole
 			updateStatusLine()
 		}
+		// Handle Alt+T to toggle thinking block visibility
+		if event.Key() == tcell.KeyRune && event.Rune() == 't' && event.Modifiers()&tcell.ModAlt != 0 {
+			thinkingCollapsed = !thinkingCollapsed
+			textView.SetText(chatToText(chatBody.Messages, cfg.ShowSys))
+			colorText()
+			status := "expanded"
+			if thinkingCollapsed {
+				status = "collapsed"
+			}
+			if err := notifyUser("thinking", fmt.Sprintf("Thinking blocks %s", status)); err != nil {
+				logger.Error("failed to send notification", "error", err)
+			}
+			return nil
+		}
 		if event.Key() == tcell.KeyF1 {
 			// chatList, err := loadHistoryChats()
 			chatList, err := store.GetChatByChar(cfg.AssistantRole)
-- 
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