[refactoring] Move engine history code to history file

Author: g3force

internal/app/controller/engine.go

@@ -10,8 +10,6 @@ import (
 	"time"
 )
 
-const maxHistorySize = 10
-
 type Engine struct {
 	State        *State
 	UiProtocol   []UiProtocolEntry
@@ -81,27 +79,6 @@ func (e *Engine) AddGameEvent(gameEvent GameEvent) {
 	e.LogGameEvent(gameEvent)
 }
 
-// UndoLastAction restores the last state from internal history
-func (e *Engine) UndoLastAction() {
-	lastIndex := len(e.History) - 2
-	if lastIndex >= 0 {
-		*e.State = e.History[lastIndex].State.DeepCopy()
-		e.UiProtocol = append(e.History[lastIndex].UiProtocol[:0:0],
-			e.History[lastIndex].UiProtocol...)
-		e.History = e.History[0:lastIndex]
-	}
-}
-
-func (e *Engine) appendHistory() {
-	var entry HistoryEntry
-	entry.State = e.State.DeepCopy()
-	entry.UiProtocol = append(e.UiProtocol[:0:0], e.UiProtocol...)
-	e.History = append(e.History, entry)
-	if len(e.History) > maxHistorySize {
-		e.History = e.History[1:]
-	}
-}
-
 func (e *Engine) Continue() {
 	substitutionIntend := e.State.BotSubstitutionIntend()
 	if substitutionIntend != TeamUnknown {

internal/app/controller/history.go renamed to internal/app/controller/engineHistory.go

@@ -8,6 +8,7 @@ import (
 	"os"
 )
 
+const maxHistorySize = 10
 const historyFileName = "history.json"
 
 type HistoryPreserver struct {
@@ -79,3 +80,25 @@ func (r *HistoryPreserver) Save(history History) {
 		log.Print("Could not sync history file", err)
 	}
 }
+
+// UndoLastAction restores the last state from internal history
+func (e *Engine) UndoLastAction() {
+	lastIndex := len(e.History) - 2
+	if lastIndex >= 0 {
+		*e.State = e.History[lastIndex].State.DeepCopy()
+		e.UiProtocol = append(e.History[lastIndex].UiProtocol[:0:0],
+			e.History[lastIndex].UiProtocol...)
+		e.History = e.History[0:lastIndex]
+	}
+}
+
+// appendHistory appends the current state to the history
+func (e *Engine) appendHistory() {
+	var entry HistoryEntry
+	entry.State = e.State.DeepCopy()
+	entry.UiProtocol = append(e.UiProtocol[:0:0], e.UiProtocol...)
+	e.History = append(e.History, entry)
+	if len(e.History) > maxHistorySize {
+		e.History = e.History[1:]
+	}
+}