import { MacOSScrollAccel, type ScrollAcceleration } from "@opentui/core"

import type { TuiConfig } from "@/cli/cmd/tui/config/tui"

export class CustomSpeedScroll implements ScrollAcceleration {

constructor(private speed: number) {}

tick(_now?: number): number {

return this.speed

}

reset(): void {}

}

export function getScrollAcceleration(

tuiConfig?: Pick<TuiConfig.Info, "scroll_acceleration" | "scroll_speed">,

): ScrollAcceleration {

if (tuiConfig?.scroll_acceleration?.enabled) {

return new MacOSScrollAccel()

}

if (tuiConfig?.scroll_speed !== undefined) {

return new CustomSpeedScroll(tuiConfig.scroll_speed)

}

return new CustomSpeedScroll(3)

}