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import type { PageAccessLevel } from "@/shared/entitlements";
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import { deriveEditorAffordance, type EditorAffordance } from "@/client/lib/affordance/editor";
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import { deriveCanvasAffordance, type CanvasAffordance } from "@/client/lib/affordance/canvas";
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import type { PageKind } from "@/shared/types";
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interface SharePageAffordanceBase {
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  showViewOnlyBadge: boolean;
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}
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export type SharePageAffordance =
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  | (SharePageAffordanceBase & {
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      kind: "doc";
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      editor: EditorAffordance;
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    })
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  | (SharePageAffordanceBase & {
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      kind: "canvas";
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      canvas: CanvasAffordance;
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    });
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export function deriveSharePageAffordance(input: {
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  pageKind: PageKind;
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  pageAccess: PageAccessLevel;
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  workspaceId: string | undefined;
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  online: boolean;
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}): SharePageAffordance {
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  const { pageKind, pageAccess, workspaceId, online } = input;
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  if (pageKind === "canvas") {
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    const canvas = deriveCanvasAffordance({
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      surface: "shared",
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      pageAccess,
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      workspaceId,
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      online,
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    });
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    return {
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      kind: "canvas",
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      showViewOnlyBadge: !canvas.canEdit,
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      canvas,
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    };
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  }
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  const editor = deriveEditorAffordance({
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    surface: "shared",
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    pageAccess,
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    workspaceId,
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    online,
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    // Shared surface entitlements deny every AI action regardless of role, so
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    // role is informational here. Emit "none" to make the link-scoped contract
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    // explicit at the callsite.
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    workspaceRole: "none",
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  });
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  return {
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    kind: "doc",
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    showViewOnlyBadge: !editor.documentEditable,
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    editor,
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  };
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}