sinProject-Inc/sinpro-dev

type KeyEventHandlerParams = {
    alt?: boolean
    shift?: boolean
    control?: boolean
    code?: string
}

type KeyboardEventHandler = (event: KeyboardEvent) => void

export class KeyboardShortcutHandler {
    public static should_process_event(params: KeyEventHandlerParams, event: KeyboardEvent): boolean {
        const { alt = false, shift = false, control = false, code = null } = params
        const is_control_pressed = event.ctrlKey || event.metaKey

        return (
            alt === event.altKey &&
            shift === event.shiftKey &&
            control === is_control_pressed &&
            code === event.code
        )
    }

    public static remove(handler: KeyboardEventHandler): void {
        window.removeEventListener('keydown', handler)
    }

    public static add(handler: KeyboardEventHandler): void {
        KeyboardShortcutHandler.remove(handler)

        window.addEventListener('keydown', handler)
    }

    public static create(params: KeyEventHandlerParams, callback: () => void): void {
        const handler = (event: KeyboardEvent): void => {
            const should_process_event = this.should_process_event(params, event)

            if (!should_process_event) return

            event.preventDefault()
            callback()
        }

        KeyboardShortcutHandler.add(handler)
    }
}