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import { createContext, use } from "react";
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import { hasWorkspaceIdentity, type WorkspaceRouteState } from "@/client/lib/workspace-route-model";
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import {
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  useWorkspaceHead,
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  useWorkspacePages as useReplicaPages,
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  useWorkspaceMembers as useReplicaMembers,
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  useWorkspaceRole as useReplicaRole,
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} from "@/client/stores/workspace-replica";
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import type { Page, Workspace, WorkspaceMember, WorkspaceRole } from "@/shared/types";
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export interface WorkspaceViewContext {
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  route: WorkspaceRouteState;
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  canonicalSlug: string | undefined;
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}
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export const WorkspaceViewCtx = createContext<WorkspaceViewContext | null>(null);
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export function useWorkspaceView(): WorkspaceViewContext {
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  const ctx = use(WorkspaceViewCtx);
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  if (!ctx) throw new Error("useWorkspaceView must be used inside WorkspaceViewProvider");
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  return ctx;
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}
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export function useMaybeWorkspaceView(): WorkspaceViewContext | null {
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  return use(WorkspaceViewCtx);
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}
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export function useWorkspaceRouteState(): WorkspaceRouteState {
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  return useWorkspaceView().route;
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}
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export function useWorkspacePages(): Page[] {
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  const { route } = useWorkspaceView();
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  const workspaceId = hasWorkspaceIdentity(route) ? route.workspaceId : null;
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  return useReplicaPages(workspaceId);
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}
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export function useWorkspaceMembers(): WorkspaceMember[] {
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  const { route } = useWorkspaceView();
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  const workspaceId = hasWorkspaceIdentity(route) ? route.workspaceId : null;
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  return useReplicaMembers(workspaceId);
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}
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/** Caller's role in the current workspace (read from the replica — null when
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 *  no membership exists or the current view is shared-surface). */
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export function useWorkspaceRole(): WorkspaceRole | null {
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  const { route } = useWorkspaceView();
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  const workspaceId = hasWorkspaceIdentity(route) ? route.workspaceId : null;
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  return useReplicaRole(workspaceId);
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}
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/** Live workspace identity, read from the authoritative replica store. */
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export function useCurrentWorkspace(): Workspace | null {
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  const { route } = useWorkspaceView();
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  const workspaceId = hasWorkspaceIdentity(route) ? route.workspaceId : null;
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  return useWorkspaceHead(workspaceId);
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}