From 2ec4fc0cea18df083402d0bcdbdaf1dc061c8287 Mon Sep 17 00:00:00 2001
From: EnumDev <enumdev@enumerated.dev>
Date: Sun, 8 Jun 2025 11:33:48 +0300
Subject: [PATCH] implement input history

---
 src/input_bar.go |  1 +
 src/window.go    | 38 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/src/input_bar.go b/src/input_bar.go
index 31a4e39..ae5c795 100644
--- a/src/input_bar.go
+++ b/src/input_bar.go
@@ -11,6 +11,7 @@ type TyperInputRequest struct {
 	inputChannel chan string
 }
 
+var inputHistory = make([]string, 0)
 var currentInputRequest *TyperInputRequest
 
 func RequestInput(window *Window, text string, defaultInput string) chan string {
diff --git a/src/window.go b/src/window.go
index 5f2c545..34b2359 100644
--- a/src/window.go
+++ b/src/window.go
@@ -175,23 +175,54 @@ func (window *Window) input(ev *tcell.EventKey) {
 		if window.CursorMode == CursorModeBuffer {
 			x, y := window.GetCursorPos2D()
 			window.SetCursorPos2D(x, y-1)
-		} else if ActiveDropdown != nil {
+		} else if window.CursorMode == CursorModeDropdown {
 			dropdown := ActiveDropdown
 			dropdown.Selected--
 			if dropdown.Selected < 0 {
 				dropdown.Selected = 0
 			}
+		} else if window.CursorMode == CursorModeInputBar {
+			if len(inputHistory) == 0 {
+				return
+			}
+
+			current := slices.Index(inputHistory, currentInputRequest.input)
+			if current < 0 {
+				current = len(inputHistory) - 1
+			} else if current != 0 {
+				current--
+			}
+
+			currentInputRequest.input = inputHistory[current]
+			currentInputRequest.cursorPos = len(inputHistory[current])
 		}
 	} else if ev.Key() == tcell.KeyDown {
 		if window.CursorMode == CursorModeBuffer {
 			x, y := window.GetCursorPos2D()
 			window.SetCursorPos2D(x, y+1)
-		} else if ActiveDropdown != nil {
+		} else if window.CursorMode == CursorModeDropdown {
 			dropdown := ActiveDropdown
 			dropdown.Selected++
 			if dropdown.Selected >= len(dropdown.Options) {
 				dropdown.Selected = len(dropdown.Options) - 1
 			}
+		} else if window.CursorMode == CursorModeInputBar {
+			if len(inputHistory) == 0 {
+				return
+			}
+
+			current := slices.Index(inputHistory, currentInputRequest.input)
+			if current < 0 {
+				return
+			} else if current == len(inputHistory)-1 {
+				currentInputRequest.input = ""
+				return
+			} else {
+				current++
+			}
+
+			currentInputRequest.input = inputHistory[current]
+			currentInputRequest.cursorPos = len(inputHistory[current])
 		}
 	} else if ev.Key() == tcell.KeyEscape {
 		if window.CursorMode == CursorModeInputBar {
@@ -268,6 +299,9 @@ func (window *Window) input(ev *tcell.EventKey) {
 			window.textArea.CursorPos++
 			window.textArea.CurrentBuffer.Contents = str
 		} else if window.CursorMode == CursorModeInputBar {
+			if currentInputRequest.input == "" && slices.Index(inputHistory, currentInputRequest.input) == -1 {
+				inputHistory = append(inputHistory, currentInputRequest.input)
+			}
 			currentInputRequest.inputChannel <- currentInputRequest.input
 			currentInputRequest = nil
 			window.CursorMode = CursorModeBuffer