export const WORKSPACE_PANEL_WIDTH_STORAGE_KEY =
  "libtv:workspacePanelDrawer:width";

export const WORKSPACE_PANEL_MIN_WIDTH = 240;
export const WORKSPACE_PANEL_MAX_WIDTH = 380;
export const WORKSPACE_PANEL_VIEWPORT_GUTTER = 48;

export function clampWorkspacePanelWidth(
  requestedWidth: number,
  viewportWidth: number,
) {
  const availableWidth = Math.min(
    WORKSPACE_PANEL_MAX_WIDTH,
    Math.max(0, viewportWidth - WORKSPACE_PANEL_VIEWPORT_GUTTER),
  );
  const minimumWidth = Math.min(WORKSPACE_PANEL_MIN_WIDTH, availableWidth);
  const roundedWidth = Number.isFinite(requestedWidth)
    ? Math.round(requestedWidth)
    : minimumWidth;

  return Math.max(minimumWidth, Math.min(availableWidth, roundedWidth));
}

export function getInitialWorkspacePanelWidth(
  viewportWidth: number,
  persistedWidth?: string | number | null,
) {
  const parsedWidth = Number(persistedWidth ?? "");
  if (Number.isFinite(parsedWidth) && parsedWidth > 0) {
    return clampWorkspacePanelWidth(parsedWidth, viewportWidth);
  }

  return clampWorkspacePanelWidth(viewportWidth > 1520 ? 280 : 240, viewportWidth);
}