584 lines
52 KiB
TypeScript
584 lines
52 KiB
TypeScript
/**
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* 旧版画布树的状态与操作协调Hook。documents按boardId保存已加载快照，views把嵌套子画布投影为当前ReactFlow场景。
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* 每个board有独立CanvasSync writer，本地历史和服务端结构事务共用两个栈，成员迁移另用串行内存队列。
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* 该实现保留旧快照协议与本地草稿恢复，不等同于新版engine的统一提交根、持久ledger和恢复状态机。
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* 调用方应按根/工作区身份重挂载；refs提供异步操作读取的最新状态，React state负责发布界面变化。
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*/
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"use client";
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import { useCallback, useEffect, useMemo, useRef, useState } from "react";
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import type { EdgeChange, NodeChange } from "@xyflow/react";
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import { api as requestAPI, ApiError } from "@/lib/api";
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import { canvasReducer, decodeCanvas, type CanvasAction, type CanvasDocument, type CanvasHistory, type CanvasNode } from "@/lib/canvas";
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import { CanvasSync, canvasFingerprint, canvasPayload, canvasPath, decodeSnapshot, readLocalRecovery, type CanvasSnapshot, type CanvasRequest } from "@/lib/canvas-sync";
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import { CANVAS_ACCEPT, type EdgeData } from "@/lib/canvas-v2";
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import { subgraphMovePath, subgraphMoveParticipants } from "@/lib/canvas-subgraphs";
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import { mergeCanvasDocuments, projectCanvasTree, transformEdgeData, referenceAfterMoves } from "@/lib/canvas-tree";
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/** 命令返回的快照额外携带board_id，用于把多画布结果安装回各自writer。 */
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type OwnedSnapshot = CanvasSnapshot & { board_id: string };
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/** 兼容多个旧命令端点的结果包络，可能返回父/子/多快照、事务身份、归档列表和版本；各使用路径再解码快照。 */
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export type CanvasCommandResult = { transaction_id?: string; parent?: OwnedSnapshot; child?: OwnedSnapshot; snapshots?: OwnedSnapshot[]; children?: OwnedSnapshot[]; canvas_version?: number; applied_versions?: Record<string, number>; archived_board_ids?: string[]; undo_receipt?: { expires_at: string }; [key: string]: unknown };
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/** 本地历史保存操作前整份画布，可附关联画布；pendingMove标记尚未上传图片的跨画布移动，便于后来按服务端归属撤销。 */
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type LocalHistory = { boardId: string; before: CanvasDocument; related?: Map<string, CanvasDocument>; pendingMove?: { id: string; source: string; target: string } };
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/** 服务端结构事务历史保存可重放的路径/负载、事务ID和参与画布；撤销请求服务端undo，重做重新执行原命令。 */
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type TransactionHistory = { boardId: string; path: string; payload: Record<string, unknown>; id: string; participants: string[] };
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/** 两种历史条目共用undo/redo栈，通过是否有id字段区分；不是每次pointermove都直接创建条目。 */
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type Entry = LocalHistory | TransactionHistory;
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/** 成员归属迁移的FIFO任务；run在准备后捕获固定body/key供不确定失败重试，refresh表示确定冲突后需刷新基线。 */
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type MemberJob = { source: string; target: string; ids: string[]; parent: string; frame: string; participants: string[]; error?: string; refresh?: boolean; run?: () => Promise<void>; resolve: () => void };
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/** 只为一次reducer运算建立临时空历史，借其past是否变化判断该动作是否应进入本Hook自己的历史栈。 */
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const history = (document: CanvasDocument): CanvasHistory => ({ past: [], present: document, future: [] });
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/** initial建立根画布，snapshot决定是否连接服务端writer；paused阻止保存/独占事务等准入，migration额外限制旧写入。
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* parentBoardId用于补读祖先快照；导出、跨分区移动和事务可能按需加载更多画布。 */
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export function useCanvasTree(root: string, workspace: string, initial: CanvasDocument, snapshot?: CanvasSnapshot, paused = false, parentBoardId?: string, migration?: {accountId:string;isCurrentIdentity():boolean}) {
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// 有迁移上下文时先关旧编辑入口，等迁移协调组件取得共享租约再开放；flush只有迁移准备阶段临时启用。
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const migrationGate=useRef(!!migration);
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const migrationFlush=useRef(false);
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const [migrationHeld,setMigrationState]=useState(!!migration);
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/** 同步检查门闩和账号身份，事件处理无需等待React的migrationHeld重新渲染。 */
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const migrationBlocked=()=>migrationGate.current||!!migration&&!migration.isCurrentIdentity();
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/** 同时更新同步门闩与界面状态；只更新state会留下同一事件轮次中的旧写入窗口。 */
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function setMigrationHeld(value:boolean){migrationGate.current=value;setMigrationState(value);}
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/** 旧接口请求护栏：await前后检查账号，写请求受迁移门闩限制；迁移排空时只放行canvas PATCH。
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* X-Expected-Account要求代理校验目标账号，避免切号后旧请求误用新会话。 */
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const api:CanvasRequest=async <T,>(path:string,options?:RequestInit)=>{
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if(migration&&!migration.isCurrentIdentity())throw new Error('identity_changed');
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if(migrationBlocked()&&options?.method&&options.method!=='GET'&&!(migrationFlush.current&&options.method==='PATCH'&&path.endsWith('/canvas')))throw new Error('canvas_busy');
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const headers=new Headers(options?.headers);if(migration)headers.set('X-Expected-Account',migration.accountId);
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const value=await requestAPI<T>(path,{...options,headers:Object.fromEntries(headers)});
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if(migration&&!migration.isCurrentIdentity())throw new Error('identity_changed');return value;
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};
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// documents是已加载board的模型表，current立即跟随发布供异步回调读取；status/error是旧writer汇总显示值。
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const [documents, setDocuments] = useState(new Map([[root, initial]]));
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const current = useRef(documents); current.current = documents;
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const [status, setStatus] = useState("saved");
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const [error, setError] = useState("");
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const [busy, setBusy] = useState(false);
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const [memberJobs, setMemberJobs] = useState<MemberJob[]>([]);
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// capability缓存查询Promise；members是实际内存队列，memberJobs只是供React显示的数组副本。
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const memberCapability = useRef<Promise<boolean> | null>(null);
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const members = useRef<MemberJob[]>([]), memberRunning = useRef(false), dragging = useRef(false);
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/** 仅挂载期间发布队列副本；任务对象仍共享引用，修改error等字段后需显式通知。 */
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const showMembers = () => { if (mounted.current) setMemberJobs([...members.current]); };
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/** 拖动期间延后自动保存，结束时发布新Map触发防抖重新评估；不在这里执行成员归属变化。 */
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function setDragging(value: boolean) { dragging.current = value; if (!value) publish(new Map(current.current)); }
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/** 成员任务涉及的节点暂不能再被普通动作改动；队列非空时也保护子图入口几何及结构，避免请求基准漂移。 */
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function protectedNodes(boardId: string) {
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const ids = new Set(members.current.flatMap((job) => [job.source, job.target].includes(boardId) ? job.ids : []));
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if (members.current.length) for (const node of current.current.get(boardId)?.nodes || []) if (node.data.subgraph) ids.add(node.id);
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return ids;
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}
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const [pendingCommand, setPendingCommand] = useState(false);
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// 不确定命令失败时保留同一execute闭包，pendingCommand驱动UI；locked只管当前独占异步操作。
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const retryOperation = useRef<(() => Promise<CanvasCommandResult>) | null>(null);
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const locked = useRef(false), mounted = useRef(true), pause = useRef(paused); pause.current = paused;
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// writer持每画布ACK基线与保存队列，loading去重子画布读取；二者都不是documents的替代存储。
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const writers = useRef(new Map<string, CanvasSync>());
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const loading = useRef(new Set<string>());
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const [retryLoad, setRetryLoad] = useState(0);
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const [recoveries, setRecoveries] = useState(new Map<string, CanvasDocument>());
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const pendingRecovery = useRef(recoveries); pendingRecovery.current = recoveries;
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/** 以当前服务端快照筛选有内容差异的本地恢复候选，按board记录，等待用户决定；不证明可安全覆盖模型。 */
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function inspectRecovery(boardId: string, value: CanvasSnapshot) {
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const local = readLocalRecovery(localStorage, `endoleap_canvas_v1:${workspace}:${boardId}`, value);
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if (local) { const next = new Map(pendingRecovery.current).set(boardId, local); pendingRecovery.current = next; setRecoveries(next); }
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}
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/** 可编辑时按选择替换本地文档或采用现状，移除恢复候选和草稿记录；远端写入仍走后续writer。 */
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function resolveRecovery(boardId: string, restore: boolean) {
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if(migrationBlocked())return;
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const draft = pendingRecovery.current.get(boardId);
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if (restore && draft) update(boardId, { type: "replace", document: draft });
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const next = new Map(pendingRecovery.current); next.delete(boardId); pendingRecovery.current = next; setRecoveries(next);
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localStorage.removeItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`);
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}
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// 两个ref数组作为历史栈，boardAliases记录重做子图创建后新旧boardID对应；tick用于仅栈变化时通知UI。
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const undo = useRef<Entry[]>([]), redo = useRef<Entry[]>([]);
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const boardAliases = useRef(new Map<string, string>());
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const [, tick] = useState(0);
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// 根据根与documents派生投影索引，nodeRefs/edgeRefs把场景ID映射回所属board、本地ID和坐标变换。
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const views = useMemo(() => projectCanvasTree(root, documents), [root, documents]);
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const view = useRef(views); view.current = views;
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/** 先更新同步ref，再在挂载期间发布React state；等待中的操作可立即读取新Map。 */
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function publish(next: Map<string, CanvasDocument>) { current.current = next; if (mounted.current) setDocuments(next); }
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/** 将服务端快照作为writer基线：已有writer采用新ACK，否则在真实快照模式建立writer；这里只安装，不发保存。 */
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function install(boardId: string, value: CanvasSnapshot) {
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const writer = writers.current.get(boardId);
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if (writer) writer.adopt(value);
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else if (snapshot) writers.current.set(boardId, new CanvasSync(api, canvasPath(workspace, boardId), value, (state) => {
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if (!mounted.current) return;
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setStatus(state.status); if (state.error) setError(state.error);
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}));
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}
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// Initialization never writes a snapshot to the server.
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if (snapshot && !writers.current.has(root)) install(root, snapshot);
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useEffect(() => { mounted.current = true; return () => { mounted.current = false; }; }, []);
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/** 普通单画布动作入口：检查门闩，经reducer计算新文档，保留成员迁移保护字段，再按需要记历史并发布。 */
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const update = (boardId: string, action: CanvasAction) => {
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if (migrationBlocked() || locked.current || retryOperation.current) return;
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const before = current.current.get(boardId); if (!before) return;
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const result = canvasReducer(history(before), action);
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const protectedIDs = protectedNodes(boardId);
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// 迁移中的普通节点只允许选中变化；未作为移动目标的子图入口保留原几何、subgraph/ports/presentation。
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// reducer删掉的受保护节点也补回，避免异步成员请求到来时对象已被本地删除。
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if (protectedIDs.size) result.present = { ...result.present, nodes: result.present.nodes.map((node) => {
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const prior = before.nodes.find((item) => item.id === node.id);
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if (!prior || !protectedIDs.has(node.id)) return node;
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const moving = members.current.some((job) => [job.source, job.target].includes(boardId) && job.ids.includes(node.id));
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return prior.data.subgraph && !moving ? { ...node, position: prior.position, width: prior.width, height: prior.height, data: { ...node.data, subgraph: prior.data.subgraph, ports: prior.data.ports, presentation: prior.data.presentation } } : { ...prior, selected: node.selected };
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}).concat(before.nodes.filter((node) => protectedIDs.has(node.id) && !result.present.nodes.some((item) => item.id === node.id))) };
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// reducer产生历史才入undo，普通更新路径最多留40项并清redo；其它事务/刷新路径不一定使用同一截断逻辑。
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if (result.past.length) { undo.current.push({ boardId, before }); undo.current = undo.current.slice(-40); redo.current = []; }
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publish(new Map(current.current).set(boardId, result.present));
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};
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/** 默认对根发动作，也允许调用方显式指定已加载board。 */
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const dispatch = (action: CanvasAction, boardId = root) => update(boardId, action);
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/** 从投影节点ID解析实际owner，再用原始节点ID构造动作，避免把场景复合ID写回快照。 */
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const nodeAction = (id: string, action: (id: string) => CanvasAction) => { const ref = view.current.nodeRefs.get(id); if (ref) update(ref.boardId, action(ref.id)); };
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/** 按owner分组ReactFlow节点变化；忽略add/replace，将场景位置和尺寸还原为所属board局部坐标。 */
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const nodesChanged = (changes: NodeChange<CanvasNode>[]) => {
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if (migrationBlocked() || locked.current || retryOperation.current) return;
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const groups = new Map<string, NodeChange<CanvasNode>[]>();
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// 同批父分区也在移动时先计算调整后的原点，避免对子节点重复施加父位移；尺寸再除投影scale。
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const moves = new Map(changes.flatMap((change) => change.type === "position" && change.position ? [[change.id, change.position] as const] : []));
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for (const change of changes) {
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if (change.type === "add" || change.type === "replace") continue;
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const ref = view.current.nodeRefs.get(change.id); if (!ref) continue;
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const adjusted = referenceAfterMoves(root, current.current, view.current.boards, ref.boardId, moves);
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const next = { ...change, id: ref.id };
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if (next.type === "position" && next.position) next.position = { x: (next.position.x - adjusted.origin.x) / ref.scale, y: (next.position.y - adjusted.origin.y) / ref.scale };
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// ResizeObserver只更新测量信息；非显式resizing不得把测量宽高当模型尺寸写回。
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if (next.type === "dimensions") {
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// ResizeObserver measurements are editor state. Only an explicit resize
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// gesture may write node dimensions back to the owning snapshot.
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if (!next.resizing) next.setAttributes = false;
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if (next.dimensions) next.dimensions = { width: next.dimensions.width / ref.scale, height: next.dimensions.height / ref.scale };
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}
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groups.set(ref.boardId, [...(groups.get(ref.boardId) || []), next]);
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}
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for (const [boardId, changes] of groups) update(boardId, { type: "nodes", changes });
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};
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/** 按edgeRefs分组选择/删除等变化，忽略add/replace；最终update仍统一检查写入准入。 */
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const edgesChanged = (changes: EdgeChange[]) => {
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const groups = new Map<string, EdgeChange[]>();
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for (const change of changes) {
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if (change.type === "add" || change.type === "replace") continue;
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const ref = view.current.edgeRefs.get(change.id); if (ref) groups.set(ref.boardId, [...(groups.get(ref.boardId) || []), { ...change, id: ref.id }]);
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}
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for (const [boardId, changes] of groups) update(boardId, { type: "edges", changes });
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};
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/** 曲线路径从场景坐标反变换回owner局部空间，再派发edge-data；transient交reducer决定历史语义。 */
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const patchEdge = (id: string, data: EdgeData, transient = false) => {
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const ref = view.current.edgeRefs.get(id); if (ref) update(ref.boardId, { type: "edge-data", id: ref.id, data: transformEdgeData(data, ref, true)!, transient });
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};
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/** 遍历已加载文档，只有目标owner/localID被选中，其余节点取消选择；不直接操作投影数组。 */
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const select = (id: string) => {
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for (const [boardId, document] of current.current) update(boardId, { type: "nodes", changes: document.nodes.map((node) => ({ type: "select", id: node.id, selected: view.current.nodeRefs.get(id)?.boardId === boardId && view.current.nodeRefs.get(id)?.id === node.id })) });
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};
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/** 读取并解码一个board的旧v2快照，可传取消信号；api层仍检查迁移账号身份。 */
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const read = async (boardId: string, signal?: AbortSignal) => decodeSnapshot(await api<CanvasSnapshot>(canvasPath(workspace, boardId), { headers: { Accept: CANVAS_ACCEPT }, signal }));
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/** 查询服务端是否支持成员迁移同时提交坐标；演示为false，成功结果复用，失败清缓存供按需重试。 */
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function supportsMemberPositions(): Promise<boolean> {
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if (!snapshot) return Promise.resolve(false);
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if (!memberCapability.current) {
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const capability: Promise<boolean> = api<{ subgraphs?: { member_positions?: boolean } }>(canvasPath(workspace, root) + "/capabilities", { headers: { Accept: CANVAS_ACCEPT } })
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.then((value) => value.subgraphs?.member_positions === true)
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.catch((error) => { if (memberCapability.current === capability) memberCapability.current = null; throw error; });
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memberCapability.current = capability;
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}
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return memberCapability.current;
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}
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// 能力预取失败不视作确定不支持，真正成员操作仍可重新请求。
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useEffect(() => {
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void supportsMemberPositions().catch(() => { /* A failed prefetch is retried on demand, never cached as unsupported. */ });
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}, [root, workspace, !!snapshot]);
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/** 按需加载真实快照或演示本地草稿，装writer并检查恢复候选；recursive递归加载子图，祖先集合防环且限制深度。 */
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async function ensure(boardId: string, recursive = false, ancestors = new Set<string>()): Promise<void> {
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if (ancestors.has(boardId) || ancestors.size > 8) throw new Error("subgraph_cycle");
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let document = current.current.get(boardId);
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if (!document) {
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const value = snapshot ? await read(boardId) : (() => { const raw = localStorage.getItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`); return { version: 1, document: raw ? decodeCanvas(JSON.stringify(JSON.parse(raw).document)) : { schema_version: 2 as const, nodes: [], edges: [], viewport: { x: 0, y: 0, zoom: 1 } } }; })();
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install(boardId, value); if (snapshot) inspectRecovery(boardId, value); document = value.document; publish(new Map(current.current).set(boardId, document));
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}
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if (recursive) { const next = new Set(ancestors); next.add(boardId); for (const node of document.nodes) if (node.data.subgraph) await ensure(node.data.subgraph.boardId, true, next); }
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}
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/** 独占期间完整加载根下可达子图，然后收集导出Map；不会把已加载但不可达的祖先或其它分支混入导出。 */
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async function exportDocuments() {
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return exclusive(async () => {
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await ensure(root, true);
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const reachable = new Map<string, CanvasDocument>();
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/** 可达集合兼作去重；ensure已验证递归关系，此处只遍历当前已加载文档。 */
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const collect = (id: string) => { const document = current.current.get(id)!; reachable.set(id, document); for (const node of document.nodes) if (node.data.subgraph && !reachable.has(node.data.subgraph.boardId)) collect(node.data.subgraph.boardId); };
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collect(root); return reachable;
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});
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}
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// 打开子画布时向上读取元数据与快照，补齐祖先关系；alive阻止离页后的采用，不在本effect中abort请求。
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useEffect(() => {
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if (!snapshot || !parentBoardId) return;
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let alive = true;
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void (async () => {
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let id: string | undefined = parentBoardId; const seen = new Set<string>([root]);
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||
while (id && alive) {
|
||
if (seen.has(id) || seen.size > 8) throw new Error("subgraph_cycle"); seen.add(id);
|
||
const [metadata, value]: [{ parent_board_id?: string }, CanvasSnapshot] = await Promise.all([api<{ parent_board_id?: string }>(`workspaces/${workspace}/materials/${id}`), read(id)]);
|
||
if (!alive) return;
|
||
if (!current.current.has(id)) { install(id, value); publish(new Map(current.current).set(id, value.document)); }
|
||
id = metadata.parent_board_id;
|
||
}
|
||
})().catch((error) => { if (alive) setError(error.message); });
|
||
return () => { alive = false; };
|
||
// Root identity is stable until this editor unmounts.
|
||
// eslint-disable-next-line react-hooks/exhaustive-deps
|
||
}, [parentBoardId, root, workspace]);
|
||
// 场景可见且未折叠的子图按需异步读取，loading去重；回包时重新确认仍被当前文档引用。
|
||
useEffect(() => {
|
||
for (const [boardId, document] of documents) for (const node of document.nodes) {
|
||
if (!view.current.boards.has(boardId)) continue;
|
||
const child = node.data.subgraph?.boardId;
|
||
if (!child || node.data.presentation?.collapsed || documents.has(child) || loading.current.has(child)) continue;
|
||
loading.current.add(child);
|
||
read(child).then((value) => {
|
||
if (!mounted.current || current.current.has(child) || ![...current.current.values()].some((doc) => doc.nodes.some((node) => node.data.subgraph?.boardId === child))) return;
|
||
install(child, value); inspectRecovery(child, value); publish(new Map(current.current).set(child, value.document));
|
||
}).catch((error) => { if (mounted.current) setError(error.message); }).finally(() => loading.current.delete(child));
|
||
}
|
||
// Values and writers are scoped to this mounted root/workspace.
|
||
// eslint-disable-next-line react-hooks/exhaustive-deps
|
||
}, [documents, retryLoad]);
|
||
// 文档变化防抖：250ms本地备份、800ms远端保存。恢复待决画布跳过，防止覆盖用户尚未选择的草稿。
|
||
// 远端另等独占锁、命令重试、成员任务和拖动结束；本地备份不需要等这些普通操作全部结束。
|
||
useEffect(() => {
|
||
if (paused || migrationBlocked()) return;
|
||
const backup = setTimeout(() => {
|
||
if(migrationBlocked())return;
|
||
for (const [boardId, document] of current.current) try {
|
||
if (pendingRecovery.current.has(boardId)) continue;
|
||
const writer = writers.current.get(boardId);
|
||
localStorage.setItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`, JSON.stringify({ document: canvasPayload(document), baseVersion: writer?.version || 1, dirty: writer ? writer.needsSave(document) : false }));
|
||
} catch { setError("local_backup_failed"); }
|
||
}, 250);
|
||
const save = setTimeout(() => {
|
||
if (migrationBlocked() || locked.current || retryOperation.current || pause.current || members.current.length || dragging.current) return;
|
||
for (const [boardId, document] of current.current) if (!pendingRecovery.current.has(boardId)) void writers.current.get(boardId)?.enqueue(document);
|
||
}, 800);
|
||
return () => { clearTimeout(backup); clearTimeout(save); };
|
||
}, [documents, paused, workspace, memberJobs, migrationHeld]);
|
||
// pagehide/卸载尽量做本地同步备份，不等待远端flush；暂停/迁移仍禁止写，存储满时保留已有记录。
|
||
useEffect(() => {
|
||
/** 遍历最新内存文档，备份规范化payload与ACK版本/dirty；页面离开时错误不再触发界面更新。 */
|
||
const backup = () => {
|
||
if (pause.current || migrationBlocked()) return;
|
||
for (const [boardId, document] of current.current) {
|
||
if (pendingRecovery.current.has(boardId)) continue;
|
||
try { const writer = writers.current.get(boardId); localStorage.setItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`, JSON.stringify({ document: canvasPayload(document), baseVersion: writer?.version || 1, dirty: writer ? writer.needsSave(document) : false })); } catch { /* Existing draft is retained if storage is full. */ }
|
||
}
|
||
};
|
||
window.addEventListener("pagehide", backup);
|
||
return () => { window.removeEventListener("pagehide", backup); backup(); };
|
||
}, [workspace]);
|
||
/** 串行排空各writer，任一恢复待决或writer错误就失败；deferMemberPositions保留待移动节点原ACK坐标。
|
||
* 支持原子坐标的成员接口会在归属事务里提交新位置，避免先把新位置单独写入旧owner。 */
|
||
async function flush(deferMemberPositions = false) {
|
||
for (const [boardId, document] of current.current) {
|
||
if (pendingRecovery.current.has(boardId)) throw new Error("draft_recovery_required");
|
||
const writer = writers.current.get(boardId); if (!writer) continue;
|
||
const deferred = deferMemberPositions ? new Set(members.current.filter((job) => job.source === boardId).flatMap((job) => job.ids)) : new Set<string>();
|
||
const saving = deferred.size ? { ...document, nodes: document.nodes.map((node) => deferred.has(node.id) ? { ...node, position: writer.document.nodes.find((item) => item.id === node.id)?.position || node.position } : node) } : document;
|
||
await writer.enqueue(saving); await writer.settled(); if (writer.error) throw new Error(writer.error);
|
||
}
|
||
}
|
||
/** 迁移前必须已关门，无事务/成员/拖动/加载，且恢复已处理；加载整棵迁移树并核查上传占位。
|
||
* 先备份本页，再临时放行PATCH排空旧writer；所有writer确认无待保存内容后把备份标为clean。 */
|
||
async function prepareMigration(projectRoot:string){
|
||
if(!migrationGate.current)throw new Error('migration_gate_required');
|
||
if(locked.current||retryOperation.current||members.current.length||dragging.current||loading.current.size)throw new Error('canvas_busy');
|
||
if(pause.current||pendingRecovery.current.size)throw new Error('draft_recovery_required');
|
||
await Promise.all([...writers.current.values()].map(writer=>writer.settled()));
|
||
await ensure(projectRoot,true);
|
||
if(!mounted.current||migration&&!migration.isCurrentIdentity())throw new Error('identity_changed');
|
||
if(pendingRecovery.current.size)throw new Error('draft_recovery_required');
|
||
if([...current.current.values()].some(document=>document.nodes.some(node=>node.pendingUpload)))throw new Error('migration_pending_uploads');
|
||
for(const[boardId,document]of current.current){
|
||
const writer=writers.current.get(boardId);
|
||
const local=readLocalRecovery(localStorage,`endoleap_canvas_v1:${workspace}:${boardId}`,writer?{version:writer.version,document:writer.document}:undefined);
|
||
// 本地另有不同恢复内容时转为用户选择，不能用当前内存直接覆盖它后迁移。
|
||
if(local&&canvasFingerprint(local,false)!==canvasFingerprint(document,false)){
|
||
const next=new Map(pendingRecovery.current).set(boardId,local);pendingRecovery.current=next;setRecoveries(next);throw new Error('draft_recovery_required');
|
||
}
|
||
// Preserve the current view even if it closes while PATCH is in flight.
|
||
localStorage.setItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`,JSON.stringify({document:canvasPayload(document),baseVersion:writer?.version||1,dirty:writer?writer.needsSave(document):false}));
|
||
}
|
||
// 只在flush的try/finally窗口放开旧PATCH，其它写命令仍被api护栏拒绝。
|
||
migrationFlush.current=true;
|
||
try{await flush();}finally{migrationFlush.current=false;}
|
||
if(!mounted.current||migration&&!migration.isCurrentIdentity())throw new Error('identity_changed');
|
||
for(const[boardId,document]of current.current){
|
||
const writer=writers.current.get(boardId);
|
||
if(writer?.error||writer?.needsSave(document))throw new Error(writer.error||'canvas_busy');
|
||
localStorage.setItem(`endoleap_canvas_v1:${workspace}:${boardId}:recovery`,JSON.stringify({document:canvasPayload(document),baseVersion:writer?.version||1,dirty:false}));
|
||
}
|
||
}
|
||
/** 旧版内存独占执行器，阻断冲突准入并发布busy；异常记error后继续抛出，finally可靠释放锁。
|
||
* 它不是跨标签页锁，也不提供操作的整批服务端回滚。 */
|
||
async function exclusive<T>(operation: () => Promise<T>) {
|
||
if (migrationBlocked() || locked.current || pause.current || members.current.length) throw new Error("canvas_busy");
|
||
locked.current = true; setBusy(true);
|
||
try { return await operation(); } catch (error) { setError(error instanceof Error ? error.message : "request_failed"); throw error; }
|
||
finally { locked.current = false; if (mounted.current) setBusy(false); }
|
||
}
|
||
/** 服务端快照更新时恢复本地选中标记，避免结构事务结果抹掉当前视图选择。 */
|
||
function keepSelection(document: CanvasDocument, local?: CanvasDocument): CanvasDocument {
|
||
return { ...document, nodes: document.nodes.map((node) => ({ ...node, selected: local?.nodes.find((item) => item.id === node.id)?.selected })), edges: document.edges.map((edge) => ({ ...edge, selected: local?.edges.find((item) => item.id === edge.id)?.selected })) };
|
||
}
|
||
/** 汇总命令返回的各类快照，按boardID去重，基于旧ACK做三方合并再安装新基线。 */
|
||
function accept(result: CanvasCommandResult) {
|
||
const next = new Map(current.current);
|
||
const values = [...new Map([...(result.parent ? [result.parent] : []), ...(result.child ? [result.child] : []), ...(result.snapshots || []), ...(result.children || [])].map((value)=>[value.board_id,value])).values()];
|
||
for (const value of values) {
|
||
const decoded=decodeSnapshot(value),local=current.current.get(value.board_id),base=writers.current.get(value.board_id)?.document;
|
||
const merged=local&&base?mergeCanvasDocuments(base,local,decoded.document):decoded.document;
|
||
install(value.board_id,decoded);next.set(value.board_id,keepSelection(merged,local));
|
||
}
|
||
// 子图归档后，将仍在内存上传的节点及相关边投到父画布，避免服务端快照中没有的占位被丢弃。
|
||
// 其余已归档文档及writer从当前表移除，不在这里删除上传任务的原文件。
|
||
for (const id of result.archived_board_ids || []) {
|
||
const local=current.current.get(id);
|
||
const owner=[...current.current].find(([,doc])=>doc.nodes.some((node)=>node.data.subgraph?.boardId===id));
|
||
if(local&&owner){
|
||
const frame=owner[1].nodes.find((node)=>node.data.subgraph?.boardId===id)!,target=next.get(owner[0])!;
|
||
const scale=frame.data.presentation?.contentScale||1,ids=new Set(local.nodes.filter((node)=>node.pendingUpload).map((node)=>node.id));
|
||
const moved=local.nodes.filter((node)=>ids.has(node.id)).map((node)=>({...node,position:{x:frame.position.x+24+node.position.x*scale,y:frame.position.y+36+node.position.y*scale},width:node.width!*scale,height:node.height!*scale}));
|
||
next.set(owner[0],{...target,nodes:[...target.nodes,...moved],edges:[...target.edges,...local.edges.filter((edge)=>ids.has(edge.source)||ids.has(edge.target)).map((edge)=>({...edge,data:transformEdgeData(edge.data,{boardId:id,id:edge.id,origin:{x:frame.position.x+24,y:frame.position.y+36},scale})}))]});
|
||
}
|
||
next.delete(id);writers.current.delete(id);
|
||
}
|
||
publish(next);
|
||
return [...new Set(values.map((value) => value.board_id))];
|
||
}
|
||
/** 结构/AI等旧命令入口：加载参与writer、flush，再冻结expected_versions、If-Match和幂等key。
|
||
* execute闭包在不确定失败后复用同一body/key/version；这些恢复信息只在内存，不保证刷新后继续。 */
|
||
async function command(boardId: string, path: string, payload: Record<string, unknown>, participants?: string[], record = true, versionBoard = boardId) {
|
||
if (retryOperation.current) throw new Error("canvas_busy");
|
||
return exclusive(async () => {
|
||
for (const id of participants || []) if (!writers.current.has(id)) {
|
||
const value = await read(id); install(id, value); publish(new Map(current.current).set(id, value.document));
|
||
}
|
||
await flush();
|
||
const body = { ...payload, ...(participants ? { expected_versions: Object.fromEntries(participants.map((id) => [id, writers.current.get(id)?.version])) } : {}) };
|
||
const key = crypto.randomUUID(), version = writers.current.get(versionBoard)?.version || 1;
|
||
/** 发送、采用回执、按需补读目标快照，并把有transaction_id的结果记入服务端事务历史。 */
|
||
const execute = async (): Promise<CanvasCommandResult> => {
|
||
try {
|
||
const result = await api<CanvasCommandResult>(canvasPath(workspace, boardId) + "/" + path, { method: "POST", headers: { Accept: CANVAS_ACCEPT, "If-Match": `"${version}"`, "Idempotency-Key": key }, body: JSON.stringify(body) });
|
||
const changed = accept(result);
|
||
// 改变子图/事务后通知侧栏刷新目录；没有快照但有版本结果时补读并保留期间的本地编辑。
|
||
if (path.startsWith("subgraphs") || path.startsWith("transactions/")) window.dispatchEvent(new window.CustomEvent("endoleap:board-directory-changed", { detail: { workspace } }));
|
||
if (!changed.length && result.canvas_version) {
|
||
const target=typeof result.board_id === "string"?result.board_id:boardId,remote=await read(target),local=current.current.get(target),base=writers.current.get(target)?.document;
|
||
const merged=base&&local?mergeCanvasDocuments(base,local,remote.document):remote.document;
|
||
install(target,remote);publish(new Map(current.current).set(target,keepSelection(merged,local)));
|
||
}
|
||
// record=false用于undo/redo等已有历史流程，避免将历史遍历再次当新操作压栈。
|
||
if (record && result.transaction_id) { undo.current.push({ boardId, path, payload, id: result.transaction_id, participants: changed }); redo.current = []; tick((v) => v + 1); }
|
||
retryOperation.current = null; setPendingCommand(false); setError("");
|
||
return result;
|
||
} catch (error) {
|
||
const code = error instanceof Error ? error.message : "request_failed";
|
||
// 网络/上游/解码等不确定失败保留execute并阻断普通编辑；确定拒绝清重试入口，错误仍交调用方处理。
|
||
if (error instanceof TypeError || error instanceof ApiError && error.status >= 500 || ["upstream_timeout", "upstream_unavailable", "request_failed", "Failed to fetch", "internal_error", "invalid_canvas_snapshot"].includes(code)) { retryOperation.current = execute; setPendingCommand(true); }
|
||
else { retryOperation.current = null; setPendingCommand(false); }
|
||
throw error;
|
||
}
|
||
};
|
||
return execute();
|
||
});
|
||
}
|
||
// Ownership changes pause autosaves, not unrelated local editing. Server
|
||
// acknowledgements merge against the persisted base, preserving intervening edits.
|
||
/** 成员队列只跑队首；归属移动期间暂停autosave，允许不相关本地编辑，结果按捕获ACK合并。
|
||
* 只有成功才shift并resolve；失败任务留队首供重试，Promise不在失败时假装完成。 */
|
||
async function runMembers() {
|
||
if (migrationBlocked() || memberRunning.current || !members.current.length) return;
|
||
const job = members.current[0]; memberRunning.current = true; job.error = undefined; showMembers();
|
||
try {
|
||
if (!job.run) {
|
||
for (const id of job.participants) if (!writers.current.has(id)) await ensure(id);
|
||
// 412等确定冲突后的重新准备：读参与快照，先三方合并本地变化，再更新各writer基线。
|
||
if (job.refresh) {
|
||
const refreshed = await Promise.all(job.participants.map(async (id) => [id, await read(id)] as const));
|
||
const next = new Map(current.current);
|
||
for (const [id, remote] of refreshed) {
|
||
const base = writers.current.get(id)!.document, local = current.current.get(id)!;
|
||
next.set(id, mergeCanvasDocuments(base, local, remote.document));
|
||
}
|
||
for (const [id, remote] of refreshed) install(id, remote);
|
||
publish(next); job.refresh = false;
|
||
}
|
||
// 支持坐标时flush延后待移动节点位置；否则先按旧保存行为排空，再捕获参与文档作为合并基线。
|
||
const atomic = await supportsMemberPositions();
|
||
await flush(atomic === true);
|
||
const bases = new Map(job.participants.map((id) => [id, writers.current.get(id)!.document]));
|
||
const source = current.current.get(job.source)!;
|
||
const positions = Object.fromEntries(job.ids.map((id) => {
|
||
const node = source.nodes.find((node) => node.id === id); if (!node) throw new Error("invalid_reference");
|
||
return [id, node.position];
|
||
}));
|
||
// 请求内容含参与版本和可选局部坐标；创建job.run后重试不得换body或幂等key，除非确定原请求未应用。
|
||
const body = JSON.stringify({ source_board_id: job.source, target_board_id: job.target, node_ids: job.ids, ...(atomic ? { positions } : {}),
|
||
expected_versions: Object.fromEntries(job.participants.map((id) => [id, writers.current.get(id)!.version])) });
|
||
const key = crypto.randomUUID(), historyIndex = undo.current.length;
|
||
/** 一次准备生成的可重试闭包；要求回执覆盖所有参与画布，不能凭缺失快照移动本地owner。 */
|
||
job.run = async () => {
|
||
const result = await api<CanvasCommandResult>(canvasPath(workspace, job.parent) + `/subgraphs/${job.frame}/members`, {
|
||
method: "POST", headers: { Accept: CANVAS_ACCEPT, "Idempotency-Key": key }, body });
|
||
const snapshots = [...(result.parent ? [result.parent] : []), ...(result.snapshots || [])];
|
||
const values = new Map(snapshots.map((value) => [value.board_id, { ...decodeSnapshot(value), board_id: value.board_id }]));
|
||
if (!job.participants.every((id) => values.has(id))) throw new Error("invalid_canvas_snapshot");
|
||
/** 移动结果已含新坐标，合并前只把源节点暂存位置还原到基线，避免重复施加坐标变化。 */
|
||
const normalize = (id: string, local: CanvasDocument) => id !== job.source ? local : { ...local, nodes: local.nodes.map((node) => job.ids.includes(node.id) ? { ...node, position: bases.get(id)!.nodes.find((item) => item.id === node.id)!.position } : node) };
|
||
/** 参与画布基于原ACK+归一化本地内容+返回快照重放，未参与文档原样保留。 */
|
||
const rebaseLocal=(id:string,doc:CanvasDocument)=>values.has(id)?mergeCanvasDocuments(bases.get(id)!,normalize(id,doc),values.get(id)!.document):doc;
|
||
// 请求期间新增本地历史也基于新owner结果调整；开始前历史和服务端事务条目保持原语义。
|
||
const rebasedHistory = undo.current.map((entry,index)=>index<historyIndex||"id" in entry?entry:{...entry,before:rebaseLocal(entry.boardId,entry.before),...(entry.related?{related:new Map([...entry.related].map(([id,doc])=>[id,rebaseLocal(id,doc)]))}:{})});
|
||
const next = new Map(current.current);
|
||
for (const [id, value] of values) {
|
||
const base = bases.get(id)!; if (!base) throw new Error("invalid_canvas_snapshot");
|
||
let local = current.current.get(id)!;
|
||
// The server owns these nodes after the move. Ignore only their
|
||
// staged coordinates; all other local edits participate in the merge.
|
||
if (id === job.source) local = { ...local, nodes: local.nodes.map((node) => job.ids.includes(node.id) ? { ...node, position: base.nodes.find((item) => item.id === node.id)!.position } : node) };
|
||
const merged = keepSelection(mergeCanvasDocuments(base, local, value.document), local);
|
||
next.set(id, id !== job.target ? merged : { ...merged, nodes: merged.nodes.map((node) => job.ids.includes(node.id) ? { ...node, selected: current.current.get(job.source)?.nodes.find((item) => item.id === node.id)?.selected } : node) });
|
||
}
|
||
for (const [id, value] of values) install(id, value);
|
||
publish(next);
|
||
undo.current = rebasedHistory;
|
||
// 将迁移事务插回开始时的historyIndex，保留请求期间后来编辑的顺序，并清除旧redo。
|
||
if (result.transaction_id) { undo.current.splice(historyIndex, 0, { boardId: job.parent, path: `subgraphs/${job.frame}/members`, payload: { source_board_id: job.source, target_board_id: job.target, node_ids: job.ids, positions }, id: result.transaction_id, participants: [...values.keys()] }); redo.current = []; }
|
||
};
|
||
}
|
||
await job.run();
|
||
members.current.shift(); showMembers(); job.resolve();
|
||
} catch (error) {
|
||
job.error = error instanceof Error ? error.message : "request_failed";
|
||
// A definite rejection performed zero writes. A retry may prepare fresh
|
||
// versions; ambiguous transport failures must retain the exact body/key.
|
||
// 确定拒绝可清冻结闭包重新准备；412还需刷新版本。不确定传输失败继续保留原job.run。
|
||
if (error instanceof ApiError && error.status < 500) { job.run = undefined; job.refresh = error.status === 412; }
|
||
showMembers();
|
||
} finally {
|
||
memberRunning.current = false;
|
||
if (members.current.length && !members.current[0].error) void runMembers();
|
||
}
|
||
}
|
||
/** 检查准入和重叠成员任务后入FIFO队列；返回Promise由成功出队时resolve，错误在memberJobs中供UI重试。 */
|
||
function moveMembers(parent: string, frame: string, source: string, target: string, ids: string[], participants: string[]) {
|
||
if (migrationBlocked() || locked.current || retryOperation.current || pause.current || members.current.some((job) => job.ids.some((id) => ids.includes(id)) && [job.source, job.target].includes(source))) return Promise.reject(new Error("canvas_busy"));
|
||
return new Promise<void>((resolve) => {
|
||
members.current.push({ parent, frame, source, target, ids, participants, resolve }); showMembers(); void runMembers();
|
||
});
|
||
}
|
||
/** 将上传资源/尺寸绑定到所有当前文档及本地历史，避免撤销恢复旧Blob占位。
|
||
* 无asset时保留pendingUpload；尺寸仅在纯图片仍为320×240默认值时采用，不覆盖用户已调整大小。 */
|
||
function resolveImageUpload(id: string, asset?: { url: string; id: string }, size?: {width:number;height:number}) {
|
||
if(migrationBlocked())return;
|
||
/** 只匹配pendingUpload身份，移除或保留占位标记，并按文档schema选择是否写assetId。 */
|
||
const resolve = (document: CanvasDocument): CanvasDocument => ({ ...document, nodes: document.nodes.map((node) => {
|
||
if (node.pendingUpload !== id) return node;
|
||
const fitted=node.data.kind==="plain-image"&&node.width===320&&node.height===240?size:undefined;
|
||
const {pendingUpload,...ready}=node;
|
||
return { ...ready, ...(!asset?{pendingUpload}:{}), ...(fitted?{...fitted,style:{...ready.style,...fitted}}:{}), data: { ...ready.data, ...(asset?{src:asset.url,...(document.schema_version===2?{assetId:asset.id}:{})}:{}) } };
|
||
}) });
|
||
/** 仅改本地快照历史（含related），服务端事务条目仍由服务端重放解释。 */
|
||
const rebase = (entry: Entry): Entry => "id" in entry ? entry : { ...entry, before: resolve(entry.before), ...(entry.related ? {related:new Map([...entry.related].map(([id,doc])=>[id,resolve(doc)]))} : {}) };
|
||
undo.current = undo.current.map(rebase); redo.current = redo.current.map(rebase);
|
||
publish(new Map([...current.current].map(([board,doc])=>[board,resolve(doc)])));
|
||
}
|
||
/** 未上传且无关联边的图片可先在内存跨分区移动；校验容量/ID后按两owner原点和scale换算。
|
||
* 保存双画布before及pendingMove历史，上传完成后若进入服务端，撤销可能需要真实成员事务。 */
|
||
function movePendingImage(source: string, target: string, id: string) {
|
||
if(migrationBlocked())throw new Error("canvas_busy");
|
||
const from = current.current.get(source)!, to = current.current.get(target)!;
|
||
const node = from.nodes.find((node)=>node.id===id); if (!node?.pendingUpload || to.nodes.length>=500 || to.nodes.some((item)=>item.id===id)) throw new Error("invalid_reference");
|
||
const projected=projectCanvasTree(root,current.current), a=projected.boards.get(source)!,b=projected.boards.get(target)!;
|
||
if (!a || !b || from.edges.some((edge)=>edge.source===id||edge.target===id)) throw new Error("图片上传完成后即可跨分区移动连线。");
|
||
const moved={...node,position:{x:(a.origin.x+node.position.x*a.scale-b.origin.x)/b.scale,y:(a.origin.y+node.position.y*a.scale-b.origin.y)/b.scale},width:node.width!*a.scale/b.scale,height:node.height!*a.scale/b.scale};
|
||
undo.current.push({boardId:source,before:from,related:new Map([[target,to]]),pendingMove:{id,source,target}});redo.current=[];
|
||
publish(new Map(current.current).set(source,{...from,nodes:from.nodes.filter((node)=>node.id!==id)}).set(target,{...to,nodes:[...to.nodes,moved]}));
|
||
}
|
||
/** 独占等待writer停止后读新快照并三方合并；内容指纹改变才记本地历史，再安装新ACK。 */
|
||
async function refresh(boardId: string) {
|
||
return exclusive(async () => {
|
||
const writer = writers.current.get(boardId); if (!writer) return;
|
||
await writer.settled(); const base = writer.document;
|
||
const remote = await read(boardId), local = current.current.get(boardId)!;
|
||
const merged = mergeCanvasDocuments(base, local, remote.document);
|
||
if (canvasFingerprint(merged) !== canvasFingerprint(local)) { undo.current.push({ boardId, before: local }); redo.current = []; }
|
||
install(boardId, remote); publish(new Map(current.current).set(boardId, merged));
|
||
});
|
||
}
|
||
/** 显式采用生成结果前，针对目标节点把基线text/src/assetId/ai对齐到远端，再合并其它本地编辑。
|
||
* 合并结果先排空保存，后续apply命令才能在明确版本上覆盖目标；此方法本身不发送生成结果采用请求。 */
|
||
async function prepareApply(boardId: string, nodeId: string) {
|
||
await exclusive(async () => {
|
||
const writer = writers.current.get(boardId); if (!writer) throw new Error("invalid_reference");
|
||
await writer.settled(); const remote = await read(boardId), base = structuredClone(writer.document), local = current.current.get(boardId)!;
|
||
const before = base.nodes.find((node) => node.id === nodeId), after = remote.document.nodes.find((node) => node.id === nodeId);
|
||
if (!before || !after) throw new Error("invalid_reference");
|
||
for (const key of ["text", "src", "assetId", "ai"] as const) { if (key in after.data) (before.data as Record<string, unknown>)[key] = after.data[key]; else delete before.data[key]; }
|
||
const merged = mergeCanvasDocuments(base, local, remote.document);
|
||
install(boardId, remote); publish(new Map(current.current).set(boardId, merged));
|
||
await writer.enqueue(merged); await writer.settled(); if (writer.error) throw new Error(writer.error);
|
||
setError("");
|
||
});
|
||
}
|
||
/** 查看栈顶并检查准入，成功后才移动栈项；本地条目替换before，事务条目调用服务端undo或重做。
|
||
* 重做可能创建新子board，使用alias将后续历史引用转到新身份，避免继续操作已归档旧子图。 */
|
||
async function undoAction(isRedo = false) {
|
||
const stack = isRedo ? redo.current : undo.current, destination = isRedo ? undo.current : redo.current;
|
||
const original = stack.at(-1); if (!original || migrationBlocked() || locked.current || retryOperation.current || members.current.length) return;
|
||
/** 沿别名链解析最新boardID并防循环；只用于历史重放，不篡改任意元素ID。 */
|
||
const alias = (id: string) => { const seen = new Set<string>(); while (boardAliases.current.has(id) && !seen.has(id)) { seen.add(id); id = boardAliases.current.get(id)!; } return id; };
|
||
/** 重做本地快照时更新子图board引用，其它节点内容保留。 */
|
||
const remapDocument = (document: CanvasDocument) => ({ ...document, nodes: document.nodes.map((node) => node.data.subgraph ? { ...node, data: { ...node.data, subgraph: { boardId: alias(node.data.subgraph.boardId) } } } : node) });
|
||
const entry: Entry = isRedo ? "id" in original ? { ...original, boardId: alias(original.boardId), participants: original.participants.map(alias), payload: { ...original.payload, ...(typeof original.payload.source_board_id === "string" ? { source_board_id: alias(original.payload.source_board_id) } : {}), ...(typeof original.payload.target_board_id === "string" ? { target_board_id: alias(original.payload.target_board_id) } : {}), ...Object.fromEntries(["source", "target"].flatMap((key) => { const endpoint = original.payload[key] as { board_id?: string } | undefined; return endpoint?.board_id ? [[key, { ...endpoint, board_id: alias(endpoint.board_id) }]] : []; })) } } : { ...original, boardId: alias(original.boardId), before: remapDocument(original.before), ...(original.related?{related:new Map([...original.related].map(([id,doc])=>[alias(id),remapDocument(doc)]))}:{}) } : original;
|
||
// 待上传图片若已存在于writer基线，纯本地快照切换已不够，需按归属路径逐跳请求成员移动后再转栈。
|
||
if (!("id" in entry) && entry.pendingMove) {
|
||
const move=entry.pendingMove,desired=alias(isRedo?move.target:move.source);
|
||
const owner=[...current.current].find(([,doc])=>doc.nodes.some((node)=>node.id===move.id));
|
||
if(!owner)throw new Error("invalid_reference");
|
||
const writer=writers.current.get(owner[0]);await writer?.settled();
|
||
if(writer?.document.nodes.some((node)=>node.id===move.id)){
|
||
if(owner[0]!==desired)for(const hop of subgraphMovePath(current.current,owner[0],desired))await command(hop.parent,`subgraphs/${hop.frame}/members`,{source_board_id:hop.source,target_board_id:hop.target,node_ids:[move.id]},subgraphMoveParticipants(current.current,hop.parent,hop.source,hop.target,[move.id]),false);
|
||
stack.pop();destination.push(entry);tick((v)=>v+1);return;
|
||
}
|
||
}
|
||
// 服务端事务撤销调用transactions/{id}/undo；重做执行原命令并保存新的事务ID/参与快照身份。
|
||
if ("id" in entry) {
|
||
if (isRedo) {
|
||
const result = await command(entry.boardId, entry.path, entry.payload, entry.path === "subgraphs" ? undefined : entry.participants, false);
|
||
const snapshots = [...(result.parent ? [result.parent] : []), ...(result.child ? [result.child] : []), ...(result.snapshots || [])];
|
||
if (entry.path === "subgraphs" && result.child) {
|
||
const priorChild = entry.participants.find((id) => id !== entry.boardId); if (priorChild) boardAliases.current.set(priorChild, result.child.board_id);
|
||
}
|
||
stack.pop(); destination.push({ ...entry, id: result.transaction_id as string, participants: [...new Set(snapshots.map((value) => value.board_id))] });
|
||
} else {
|
||
await command(entry.boardId, `transactions/${entry.id}/undo`, {}, entry.participants, false);
|
||
stack.pop(); destination.push(entry);
|
||
}
|
||
// 普通本地历史用当前文档作为反向条目，连同related画布一起发布，保证下一次redo可还原。
|
||
} else {
|
||
const before = current.current.get(entry.boardId); if (!before) return;
|
||
const next=new Map(current.current).set(entry.boardId, entry.before), related=new Map<string,CanvasDocument>();
|
||
for(const [id,doc] of entry.related || []){const currentDoc=current.current.get(id);if(currentDoc)related.set(id,currentDoc);next.set(id,doc);}
|
||
publish(next); stack.pop(); destination.push({ ...entry, before, ...(entry.related?{related}:{}) });
|
||
}
|
||
tick((v) => v + 1);
|
||
}
|
||
/** 重试普通writer并触发子图读取effect；不在这里自动重发成员任务或未确认command，它们有各自入口。 */
|
||
const retry = async () => { setError(""); setRetryLoad((v) => v + 1); for (const writer of writers.current.values()) await writer.retry(); };
|
||
// 对外暴露投影、动作、恢复、事务及writer引用，旧版UI依赖此组合接口；busy合并独占、待确认命令与迁移门闩。
|
||
// transactionBusy/canUndo/canRedo反映成员队列与栈是否有项，最终undoAction仍再次检查实际准入。
|
||
return { migrationHeld,setMigrationHeld,prepareMigration,isMigrationHeld:migrationBlocked, documents, current, views, resolveImageUpload, movePendingImage, memberJobs, protectedNodes, setDragging, moveMembers, retryMembers: () => void runMembers(), transactionBusy: !!memberJobs.length, pendingCommand, retryPending: () => retryOperation.current ? exclusive(retryOperation.current) : Promise.resolve(null), prepareApply, recoveries, resolveRecovery, ensure, exportDocuments, dispatch, nodeAction, nodesChanged, edgesChanged, patchEdge, select, flush, command, refresh, read, busy: busy || pendingCommand || migrationHeld, error, status, retry, undo: () => undoAction(), redo: () => undoAction(true), canUndo: !memberJobs.length && !!undo.current.length, canRedo: !memberJobs.length && !!redo.current.length, writers, rootDocument: documents.get(root)!, setError };
|
||
}
|