Apply auto vertical progress bar for BOTTOM position only

In case "auto vertical position" is not "OFF" but the main position is not "BOTTOM", the auto mode still should be considered to be "OFF"

src/modules/reader/utils/ReaderSettings.utils.tsx

@@ -10,6 +10,8 @@ import { ForwardRefExoticComponent, MemoExoticComponent, RefAttributes } from 'r
 import {
     IReaderSettings,
     IReaderSettingsWithDefaultFlag,
+    ProgressBarPosition,
+    ProgressBarPositionAutoVertical,
     ReaderPagerProps,
     ReaderPageScaleMode,
     ReadingMode,
@@ -56,3 +58,22 @@ export const getPagerForReadingMode = (
             throw new Error(`Unexpected "ReadingMode" (${readingMode})`);
     }
 };
+
+export const getProgressBarPosition = (
+    progressBarPosition: ProgressBarPosition,
+    progressBarPositionAutoVertical: ProgressBarPositionAutoVertical,
+    topOffset: number = 0,
+    bottomOffset: number = 0,
+): ProgressBarPosition => {
+    const isAutoVerticalEnabled =
+        progressBarPositionAutoVertical !== ProgressBarPositionAutoVertical.OFF &&
+        progressBarPosition === ProgressBarPosition.BOTTOM;
+    const isVerticalSpaceLarger = window.innerHeight - topOffset - bottomOffset > window.innerWidth;
+
+    const shouldUseVerticalPosition = isAutoVerticalEnabled && isVerticalSpaceLarger;
+    if (shouldUseVerticalPosition) {
+        return progressBarPositionAutoVertical as unknown as ProgressBarPosition;
+    }
+
+    return progressBarPosition;
+};