85 lines
2.1 KiB
TypeScript
85 lines
2.1 KiB
TypeScript
import type { PageRef } from '../pdf/pdfTypes';
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export interface WorkspaceCommandState {
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pages: PageRef[];
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selectedPageIds: string[];
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lastSelectedVisualIndex: number | null;
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}
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export interface WorkspaceCommandPayload {
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before: WorkspaceCommandState;
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after: WorkspaceCommandState;
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details?: Record<string, unknown>;
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}
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export interface WorkspaceCommandRecord {
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id: string;
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type: string;
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label: string;
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timestamp: string;
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payload: WorkspaceCommandPayload;
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}
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export interface WorkspaceCommand extends WorkspaceCommandRecord {
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do: (state: WorkspaceCommandState) => WorkspaceCommandState;
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undo: (state: WorkspaceCommandState) => WorkspaceCommandState;
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}
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export function cloneCommandState(
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state: WorkspaceCommandState
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): WorkspaceCommandState {
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return {
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pages: state.pages.map((page) => ({ ...page })),
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selectedPageIds: [...state.selectedPageIds],
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lastSelectedVisualIndex: state.lastSelectedVisualIndex,
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};
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}
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export function createSnapshotCommand(params: {
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id: string;
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type: string;
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label: string;
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timestamp?: string;
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before: WorkspaceCommandState;
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after: WorkspaceCommandState;
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details?: Record<string, unknown>;
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}): WorkspaceCommand {
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return reviveWorkspaceCommand({
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id: params.id,
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type: params.type,
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label: params.label,
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timestamp: params.timestamp ?? new Date().toISOString(),
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payload: {
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before: cloneCommandState(params.before),
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after: cloneCommandState(params.after),
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details: params.details,
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},
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});
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}
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export function reviveWorkspaceCommand(
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record: WorkspaceCommandRecord
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): WorkspaceCommand {
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return {
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...record,
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do: () => cloneCommandState(record.payload.after),
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undo: () => cloneCommandState(record.payload.before),
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};
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}
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export function toWorkspaceCommandRecord(
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command: WorkspaceCommand
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): WorkspaceCommandRecord {
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return {
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id: command.id,
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type: command.type,
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label: command.label,
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timestamp: command.timestamp,
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payload: {
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before: cloneCommandState(command.payload.before),
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after: cloneCommandState(command.payload.after),
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details: command.payload.details,
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},
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};
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}
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