export type WindowsCaptureSourceLike = {
  display_id?: string
}

export type WindowsCaptureDisplayBounds = {
  x: number
  y: number
  width: number
  height: number
}

export type WindowsCaptureDisplayLike = {
  id: number
  bounds: WindowsCaptureDisplayBounds
}

export type ResolvedWindowsCaptureDisplay = {
  displayId: number
  bounds: WindowsCaptureDisplayBounds
}

export function resolveWindowsCaptureDisplay(
  source: WindowsCaptureSourceLike | null | undefined,
  allDisplays: WindowsCaptureDisplayLike[],
  primaryDisplay: WindowsCaptureDisplayLike,
): ResolvedWindowsCaptureDisplay {
  const requestedDisplayId = Number(source?.display_id)
  const primaryDisplayId = Number(primaryDisplay.id)
  const displayId = Number.isFinite(requestedDisplayId) && requestedDisplayId > 0
    ? requestedDisplayId
    : primaryDisplayId

  const matchedDisplay = allDisplays.find((display) => String(display.id) === String(displayId))
    ?? primaryDisplay

  return {
    displayId,
    bounds: matchedDisplay.bounds,
  }
}