gristlabs_grist-core/app/common/UserAPI.ts

715 lines
26 KiB
TypeScript
Raw Normal View History

import {ActionSummary} from 'app/common/ActionSummary';
import {ApplyUAResult} from 'app/common/ActiveDocAPI';
import {BaseAPI, IOptions} from 'app/common/BaseAPI';
import {BillingAPI, BillingAPIImpl} from 'app/common/BillingAPI';
import {BrowserSettings} from 'app/common/BrowserSettings';
import {BulkColValues, TableColValues, UserAction} from 'app/common/DocActions';
import {DocCreationInfo} from 'app/common/DocListAPI';
import {Features} from 'app/common/Features';
import {isClient} from 'app/common/gristUrls';
import {FullUser} from 'app/common/LoginSessionAPI';
import {OrgPrefs, UserOrgPrefs, UserPrefs} from 'app/common/Prefs';
import * as roles from 'app/common/roles';
import {addCurrentOrgToPath} from 'app/common/urlUtils';
// Nominal email address of the anonymous user.
export const ANONYMOUS_USER_EMAIL = 'anon@getgrist.com';
// Nominal email address of a user who, if you share with them, everyone gets access.
export const EVERYONE_EMAIL = 'everyone@getgrist.com';
// A special user allowed to add/remove the EVERYONE_EMAIL to/from a resource.
export const SUPPORT_EMAIL = 'support@getgrist.com';
// A special 'docId' that means to create a new document.
export const NEW_DOCUMENT_CODE = 'new';
// Properties shared by org, workspace, and doc resources.
export interface CommonProperties {
name: string;
createdAt: string; // ISO date string
updatedAt: string; // ISO date string
removedAt?: string; // ISO date string - only can appear on docs and workspaces currently
public?: boolean; // If set, resource is available to the public
}
export const commonPropertyKeys = ['createdAt', 'name', 'updatedAt'];
export interface OrganizationProperties extends CommonProperties {
domain: string|null;
// Organization includes preferences relevant to interacting with its content.
userOrgPrefs?: UserOrgPrefs; // Preferences specific to user and org
orgPrefs?: OrgPrefs; // Preferences specific to org (but not a particular user)
userPrefs?: UserPrefs; // Preferences specific to user (but not a particular org)
}
export const organizationPropertyKeys = [...commonPropertyKeys, 'domain',
'orgPrefs', 'userOrgPrefs', 'userPrefs'];
// Basic information about an organization, excluding the user's access level
export interface OrganizationWithoutAccessInfo extends OrganizationProperties {
id: number;
owner: FullUser|null;
billingAccount?: BillingAccount;
host: string|null; // if set, org's preferred domain (e.g. www.thing.com)
}
// Organization information plus the user's access level
export interface Organization extends OrganizationWithoutAccessInfo {
access: roles.Role;
}
// Basic information about a billing account associated with an org or orgs.
export interface BillingAccount {
id: number;
individual: boolean;
product: Product;
isManager: boolean;
}
// Information about the product associated with an org or orgs.
export interface Product {
name: string;
features: Features;
}
// The upload types vary based on which fetch implementation is in use. This is
// an incomplete list. For example, node streaming types are supported by node-fetch.
export type UploadType = string | Blob | Buffer;
/**
* Returns a user-friendly org name, which is either org.name, or "@User Name" for personal orgs.
*/
export function getOrgName(org: Organization): string {
return org.owner ? `@` + org.owner.name : org.name;
}
export type WorkspaceProperties = CommonProperties;
export const workspacePropertyKeys = ['createdAt', 'name', 'updatedAt'];
export interface Workspace extends WorkspaceProperties {
id: number;
docs: Document[];
org: Organization;
access: roles.Role;
owner?: FullUser; // Set when workspaces are in the "docs" pseudo-organization,
// assembled from multiple personal organizations.
// Not set when workspaces are all from the same organization.
// Set when the workspace belongs to support@getgrist.com. We expect only one such workspace
// ("Examples & Templates"), containing sample documents.
isSupportWorkspace?: boolean;
}
export interface DocumentProperties extends CommonProperties {
isPinned: boolean;
urlId: string|null;
}
export const documentPropertyKeys = [...commonPropertyKeys, 'isPinned', 'urlId'];
export interface Document extends DocumentProperties {
id: string;
workspace: Workspace;
access: roles.Role;
trunkAccess?: roles.Role|null;
}
export interface PermissionDelta {
maxInheritedRole?: roles.BasicRole|null;
users?: {
// Maps from email to group name, or null to inherit.
[email: string]: roles.NonGuestRole|null
};
}
export interface PermissionData {
maxInheritedRole?: roles.BasicRole|null;
users: UserAccessData[];
}
// A structure for modifying managers of a billing account.
export interface ManagerDelta {
users: {
// To add a manager, link their email to 'managers'.
// To remove a manager, link their email to null.
// This format is used to rhyme with the ACL PermissionDelta format.
[email: string]: 'managers'|null
};
}
// Information about a user and their access to an unspecified resource of interest.
export interface UserAccessData {
id: number;
name: string;
email: string;
picture?: string|null; // When present, a url to a public image of unspecified dimensions.
// Represents the user's direct access to the resource of interest. Lack of access to a resource
// is represented by a null value.
access: roles.Role|null;
// A user's parentAccess represent their effective inheritable access to the direct parent of the resource
// of interest. The user's effective access to the resource of interest can be determined based
// on the user's parentAccess, the maxInheritedRole setting of the resource and the user's direct
// access to the resource. Lack of access to the parent resource is represented by a null value.
// If parent has non-inheritable access, this should be null.
parentAccess?: roles.BasicRole|null;
}
export interface ActiveSessionInfo {
user: FullUser & {helpScoutSignature?: string};
org: Organization|null;
orgError?: OrgError;
}
export interface OrgError {
error: string;
status: number;
}
/**
* Options to control the source of a document being replaced. For
* example, a document could be initialized from another document
* (e.g. a fork) or from a snapshot.
*/
export interface DocReplacementOptions {
sourceDocId?: string; // docId to copy from
snapshotId?: string; // s3 VersionId
}
/**
* Information about a single document snapshot/backup.
*/
export interface DocSnapshot {
lastModified: string; // when the snapshot was made
snapshotId: string; // the id of the snapshot in the underlying store
docId: string; // an id for accessing the snapshot as a Grist document
}
/**
* A list of document snapshots.
*/
export interface DocSnapshots {
snapshots: DocSnapshot[]; // snapshots, freshest first.
}
/**
* Information about a single document state.
*/
export interface DocState {
n: number; // a sequential identifier
h: string; // a hash identifier
}
/**
* A list of document states. Most recent is first.
*/
export interface DocStates {
states: DocState[];
}
/**
* A comparison between two documents, called "left" and "right".
* The comparison is based on the action histories in the documents.
* If those histories have been truncated, the comparison may report
* two documents as being unrelated even if they do in fact have some
* shared history.
*/
export interface DocStateComparison {
left: DocState; // left / local document
right: DocState; // right / remote document
parent: DocState|null; // most recent common ancestor of left and right
// summary of the relationship between the two documents.
// same: documents have the same most recent state
// left: the left document has actions not yet in the right
// right: the right document has actions not yet in the left
// both: both documents have changes (possible divergence)
// unrelated: no common history found
summary: 'same' | 'left' | 'right' | 'both' | 'unrelated';
// optionally, details of what changed may be included.
details?: DocStateComparisonDetails;
}
/**
* Detailed comparison between document versions. For now, this
* is provided as a pair of ActionSummary objects, relative to
* the most recent common ancestor.
*/
export interface DocStateComparisonDetails {
leftChanges: ActionSummary;
rightChanges: ActionSummary;
}
export {UserProfile} from 'app/common/LoginSessionAPI';
export interface UserAPI {
getSessionActive(): Promise<ActiveSessionInfo>;
setSessionActive(email: string): Promise<void>;
getSessionAll(): Promise<{users: FullUser[], orgs: Organization[]}>;
getOrgs(merged?: boolean): Promise<Organization[]>;
getWorkspace(workspaceId: number): Promise<Workspace>;
getOrg(orgId: number|string): Promise<Organization>;
getOrgWorkspaces(orgId: number|string): Promise<Workspace[]>;
getDoc(docId: string): Promise<Document>;
newOrg(props: Partial<OrganizationProperties>): Promise<number>;
newWorkspace(props: Partial<WorkspaceProperties>, orgId: number|string): Promise<number>;
newDoc(props: Partial<DocumentProperties>, workspaceId: number): Promise<string>;
newUnsavedDoc(options?: {timezone?: string}): Promise<string>;
renameOrg(orgId: number|string, name: string): Promise<void>;
renameWorkspace(workspaceId: number, name: string): Promise<void>;
renameDoc(docId: string, name: string): Promise<void>;
updateOrg(orgId: number|string, props: Partial<OrganizationProperties>): Promise<void>;
updateDoc(docId: string, props: Partial<DocumentProperties>): Promise<void>;
deleteOrg(orgId: number|string): Promise<void>;
deleteWorkspace(workspaceId: number): Promise<void>; // delete workspace permanently
softDeleteWorkspace(workspaceId: number): Promise<void>; // soft-delete workspace
undeleteWorkspace(workspaceId: number): Promise<void>; // recover soft-deleted workspace
deleteDoc(docId: string): Promise<void>; // delete doc permanently
softDeleteDoc(docId: string): Promise<void>; // soft-delete doc
undeleteDoc(docId: string): Promise<void>; // recover soft-deleted doc
updateOrgPermissions(orgId: number|string, delta: PermissionDelta): Promise<void>;
updateWorkspacePermissions(workspaceId: number, delta: PermissionDelta): Promise<void>;
updateDocPermissions(docId: string, delta: PermissionDelta): Promise<void>;
getOrgAccess(orgId: number|string): Promise<PermissionData>;
getWorkspaceAccess(workspaceId: number): Promise<PermissionData>;
getDocAccess(docId: string): Promise<PermissionData>;
pinDoc(docId: string): Promise<void>;
unpinDoc(docId: string): Promise<void>;
moveDoc(docId: string, workspaceId: number): Promise<void>;
getUserProfile(): Promise<FullUser>;
updateUserName(name: string): Promise<void>;
getWorker(key: string): Promise<string>;
getWorkerAPI(key: string): Promise<DocWorkerAPI>;
getBillingAPI(): BillingAPI;
getDocAPI(docId: string): DocAPI;
fetchApiKey(): Promise<string>;
createApiKey(): Promise<string>;
deleteApiKey(): Promise<void>;
getTable(docId: string, tableName: string): Promise<TableColValues>;
applyUserActions(docId: string, actions: UserAction[]): Promise<ApplyUAResult>;
importUnsavedDoc(material: UploadType, options?: {
filename?: string,
timezone?: string,
onUploadProgress?: (ev: ProgressEvent) => void,
}): Promise<string>;
deleteUser(userId: number, name: string): Promise<void>;
getBaseUrl(): string; // Get the prefix for all the endpoints this object wraps.
forRemoved(): UserAPI; // Get a version of the API that works on removed resources.
}
/**
* Collect endpoints related to the content of a single document that we've been thinking
* of as the (restful) "Doc API". A few endpoints that could be here are not, for historical
* reasons, such as downloads.
*/
export interface DocAPI {
getRows(tableId: string): Promise<TableColValues>;
updateRows(tableId: string, changes: TableColValues): Promise<number[]>;
addRows(tableId: string, additions: BulkColValues): Promise<number[]>;
replace(source: DocReplacementOptions): Promise<void>;
getSnapshots(): Promise<DocSnapshots>;
forceReload(): Promise<void>;
// Compare two documents, optionally including details of the changes.
compareDoc(remoteDocId: string, options?: { detail: boolean }): Promise<DocStateComparison>;
// Compare two versions within a document, including details of the changes.
// Versions are identified by action hashes, or aliases understood by HashUtil.
// Currently, leftHash is expected to be an ancestor of rightHash. If rightHash
// is HEAD, the result will contain a copy of any rows added or updated.
compareVersion(leftHash: string, rightHash: string): Promise<DocStateComparison>;
}
// Operations that are supported by a doc worker.
export interface DocWorkerAPI {
readonly url: string;
importDocToWorkspace(uploadId: number, workspaceId: number, settings?: BrowserSettings): Promise<DocCreationInfo>;
upload(material: UploadType, filename?: string): Promise<number>;
downloadDoc(docId: string, template?: boolean): Promise<Response>;
copyDoc(docId: string, template?: boolean, name?: string): Promise<number>;
}
export class UserAPIImpl extends BaseAPI implements UserAPI {
constructor(private _homeUrl: string, private _options: IOptions = {}) {
super(_options);
}
public forRemoved(): UserAPI {
const extraParameters = new Map<string, string>([['showRemoved', '1']]);
return new UserAPIImpl(this._homeUrl, {...this._options, extraParameters});
}
public async getSessionActive(): Promise<ActiveSessionInfo> {
return this.requestJson(`${this._url}/api/session/access/active`, {method: 'GET'});
}
public async setSessionActive(email: string): Promise<void> {
const body = JSON.stringify({ email });
return this.requestJson(`${this._url}/api/session/access/active`, {method: 'POST', body});
}
public async getSessionAll(): Promise<{users: FullUser[], orgs: Organization[]}> {
return this.requestJson(`${this._url}/api/session/access/all`, {method: 'GET'});
}
public async getOrgs(merged: boolean = false): Promise<Organization[]> {
return this.requestJson(`${this._url}/api/orgs?merged=${merged ? 1 : 0}`, { method: 'GET' });
}
public async getWorkspace(workspaceId: number): Promise<Workspace> {
return this.requestJson(`${this._url}/api/workspaces/${workspaceId}`, { method: 'GET' });
}
public async getOrg(orgId: number|string): Promise<Organization> {
return this.requestJson(`${this._url}/api/orgs/${orgId}`, { method: 'GET' });
}
public async getOrgWorkspaces(orgId: number|string): Promise<Workspace[]> {
return this.requestJson(`${this._url}/api/orgs/${orgId}/workspaces?includeSupport=1`,
{ method: 'GET' });
}
public async getDoc(docId: string): Promise<Document> {
return this.requestJson(`${this._url}/api/docs/${docId}`, { method: 'GET' });
}
public async newOrg(props: Partial<OrganizationProperties>): Promise<number> {
return this.requestJson(`${this._url}/api/orgs`, {
method: 'POST',
body: JSON.stringify(props)
});
}
public async newWorkspace(props: Partial<WorkspaceProperties>, orgId: number|string): Promise<number> {
return this.requestJson(`${this._url}/api/orgs/${orgId}/workspaces`, {
method: 'POST',
body: JSON.stringify(props)
});
}
public async newDoc(props: Partial<DocumentProperties>, workspaceId: number): Promise<string> {
return this.requestJson(`${this._url}/api/workspaces/${workspaceId}/docs`, {
method: 'POST',
body: JSON.stringify(props)
});
}
public async newUnsavedDoc(options: {timezone?: string} = {}): Promise<string> {
return this.requestJson(`${this._url}/api/docs`, {
method: 'POST',
body: JSON.stringify(options),
});
}
public async renameOrg(orgId: number|string, name: string): Promise<void> {
await this.request(`${this._url}/api/orgs/${orgId}`, {
method: 'PATCH',
body: JSON.stringify({ name })
});
}
public async renameWorkspace(workspaceId: number, name: string): Promise<void> {
await this.request(`${this._url}/api/workspaces/${workspaceId}`, {
method: 'PATCH',
body: JSON.stringify({ name })
});
}
public async renameDoc(docId: string, name: string): Promise<void> {
return this.updateDoc(docId, {name});
}
public async updateOrg(orgId: number|string, props: Partial<OrganizationProperties>): Promise<void> {
await this.request(`${this._url}/api/orgs/${orgId}`, {
method: 'PATCH',
body: JSON.stringify(props)
});
}
public async updateDoc(docId: string, props: Partial<DocumentProperties>): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}`, {
method: 'PATCH',
body: JSON.stringify(props)
});
}
public async deleteOrg(orgId: number|string): Promise<void> {
await this.request(`${this._url}/api/orgs/${orgId}`, { method: 'DELETE' });
}
public async deleteWorkspace(workspaceId: number): Promise<void> {
await this.request(`${this._url}/api/workspaces/${workspaceId}`, { method: 'DELETE' });
}
public async softDeleteWorkspace(workspaceId: number): Promise<void> {
await this.request(`${this._url}/api/workspaces/${workspaceId}/remove`, { method: 'POST' });
}
public async undeleteWorkspace(workspaceId: number): Promise<void> {
await this.request(`${this._url}/api/workspaces/${workspaceId}/unremove`, { method: 'POST' });
}
public async deleteDoc(docId: string): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}`, { method: 'DELETE' });
}
public async softDeleteDoc(docId: string): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/remove`, { method: 'POST' });
}
public async undeleteDoc(docId: string): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/unremove`, { method: 'POST' });
}
public async updateOrgPermissions(orgId: number|string, delta: PermissionDelta): Promise<void> {
await this.request(`${this._url}/api/orgs/${orgId}/access`, {
method: 'PATCH',
body: JSON.stringify({ delta })
});
}
public async updateWorkspacePermissions(workspaceId: number, delta: PermissionDelta): Promise<void> {
await this.request(`${this._url}/api/workspaces/${workspaceId}/access`, {
method: 'PATCH',
body: JSON.stringify({ delta })
});
}
public async updateDocPermissions(docId: string, delta: PermissionDelta): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/access`, {
method: 'PATCH',
body: JSON.stringify({ delta })
});
}
public async getOrgAccess(orgId: number|string): Promise<PermissionData> {
return this.requestJson(`${this._url}/api/orgs/${orgId}/access`, { method: 'GET' });
}
public async getWorkspaceAccess(workspaceId: number): Promise<PermissionData> {
return this.requestJson(`${this._url}/api/workspaces/${workspaceId}/access`, { method: 'GET' });
}
public async getDocAccess(docId: string): Promise<PermissionData> {
return this.requestJson(`${this._url}/api/docs/${docId}/access`, { method: 'GET' });
}
public async pinDoc(docId: string): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/pin`, {
method: 'PATCH'
});
}
public async unpinDoc(docId: string): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/unpin`, {
method: 'PATCH'
});
}
public async moveDoc(docId: string, workspaceId: number): Promise<void> {
await this.request(`${this._url}/api/docs/${docId}/move`, {
method: 'PATCH',
body: JSON.stringify({ workspace: workspaceId })
});
}
public async getUserProfile(): Promise<FullUser> {
return this.requestJson(`${this._url}/api/profile/user`);
}
public async updateUserName(name: string): Promise<void> {
await this.request(`${this._url}/api/profile/user/name`, {
method: 'POST',
body: JSON.stringify({name})
});
}
public async getWorker(key: string): Promise<string> {
const json = await this.requestJson(`${this._url}/api/worker/${key}`, {
method: 'GET',
credentials: 'include'
});
return json.docWorkerUrl;
}
public async getWorkerAPI(key: string): Promise<DocWorkerAPI> {
const docUrl = this._urlWithOrg(await this.getWorker(key));
return new DocWorkerAPIImpl(docUrl, this._options);
}
public getBillingAPI(): BillingAPI {
return new BillingAPIImpl(this._url, this._options);
}
public getDocAPI(docId: string): DocAPI {
return new DocAPIImpl(this._url, docId, this._options);
}
public async fetchApiKey(): Promise<string> {
const resp = await this.fetch(`${this._url}/api/profile/apiKey`, {
credentials: 'include'
});
return await resp.text();
}
public async createApiKey(): Promise<string> {
const res = await this.fetch(`${this._url}/api/profile/apiKey`, {credentials: 'include', method: 'POST'});
return await res.text();
}
public async deleteApiKey(): Promise<void> {
await this.fetch(`${this._url}/api/profile/apiKey`, {credentials: 'include', method: 'DELETE'});
}
// This method is not strictly needed anymore, but is widely used by
// tests so supporting as a handy shortcut for getDocAPI(docId).getRows(tableName)
public async getTable(docId: string, tableName: string): Promise<TableColValues> {
return this.getDocAPI(docId).getRows(tableName);
}
public async applyUserActions(docId: string, actions: UserAction[]): Promise<ApplyUAResult> {
return this.requestJson(`${this._url}/api/docs/${docId}/apply`, {
method: 'POST',
body: JSON.stringify(actions)
});
}
public async importUnsavedDoc(material: UploadType, options?: {
filename?: string,
timezone?: string,
onUploadProgress?: (ev: ProgressEvent) => void,
}): Promise<string> {
options = options || {};
const formData = this.newFormData();
formData.append('upload', material as any, options.filename);
if (options.timezone) { formData.append('timezone', options.timezone); }
const resp = await this.requestAxios(`${this._url}/api/docs`, {
headers: this._options.headers,
method: 'POST',
data: formData,
onUploadProgress: options.onUploadProgress,
});
return resp.data;
}
public async deleteUser(userId: number, name: string) {
await this.request(`${this._url}/api/users/${userId}`,
{method: 'DELETE',
body: JSON.stringify({name})});
}
public getBaseUrl(): string { return this._url; }
// Recomputes the URL on every call to pick up changes in the URL when switching orgs.
// (Feels inefficient, but probably doesn't matter, and it's simpler than the alternatives.)
private get _url(): string {
return this._urlWithOrg(this._homeUrl);
}
private _urlWithOrg(base: string): string {
return isClient() ? addCurrentOrgToPath(base) : base.replace(/\/$/, '');
}
}
export class DocWorkerAPIImpl extends BaseAPI implements DocWorkerAPI {
constructor(readonly url: string, private _options: IOptions = {}) {
super(_options);
}
public async importDocToWorkspace(uploadId: number, workspaceId: number, browserSettings?: BrowserSettings)
: Promise<DocCreationInfo> {
return this.requestJson(`${this.url}/api/workspaces/${workspaceId}/import`, {
method: 'POST',
body: JSON.stringify({ uploadId, browserSettings })
});
}
public async upload(material: UploadType, filename?: string): Promise<number> {
const formData = this.newFormData();
formData.append('upload', material as any, filename);
const json = await this.requestJson(`${this.url}/uploads`, {
headers: this._options.headers,
method: 'POST',
body: formData
});
return json.uploadId;
}
public async downloadDoc(docId: string, template: boolean = false): Promise<Response> {
const extra = template ? '&template=1' : '';
const result = await this.request(`${this.url}/download?doc=${docId}${extra}`, {
headers: this._options.headers,
method: 'GET',
});
if (!result.ok) { throw new Error(await result.text()); }
return result;
}
public async copyDoc(docId: string, template: boolean = false, name?: string): Promise<number> {
const url = new URL(`${this.url}/copy?doc=${docId}`);
if (template) {
url.searchParams.append('template', '1');
}
if (name) {
url.searchParams.append('name', name);
}
const json = await this.requestJson(url.href, {
headers: this._options.headers,
method: 'POST',
});
return json.uploadId;
}
}
export class DocAPIImpl extends BaseAPI implements DocAPI {
private _url: string;
constructor(url: string, readonly docId: string, options: IOptions = {}) {
super(options);
this._url = `${url}/api/docs/${docId}`;
}
public async getRows(tableId: string): Promise<TableColValues> {
return this.requestJson(`${this._url}/tables/${tableId}/data`);
}
public async updateRows(tableId: string, changes: TableColValues): Promise<number[]> {
return this.requestJson(`${this._url}/tables/${tableId}/data`, {
body: JSON.stringify(changes),
method: 'PATCH'
});
}
public async addRows(tableId: string, additions: BulkColValues): Promise<number[]> {
return this.requestJson(`${this._url}/tables/${tableId}/data`, {
body: JSON.stringify(additions),
method: 'POST'
});
}
public async replace(source: DocReplacementOptions): Promise<void> {
return this.requestJson(`${this._url}/replace`, {
body: JSON.stringify(source),
method: 'POST'
});
}
public async getSnapshots(): Promise<DocSnapshots> {
return this.requestJson(`${this._url}/snapshots`);
}
public async forceReload(): Promise<void> {
await this.request(`${this._url}/force-reload`, {
method: 'POST'
});
}
public async compareDoc(remoteDocId: string, options: {
detail?: boolean
} = {}): Promise<DocStateComparison> {
const q = options.detail ? '?detail=true' : '';
return this.requestJson(`${this._url}/compare/${remoteDocId}${q}`);
}
public async compareVersion(leftHash: string, rightHash: string): Promise<DocStateComparison> {
const url = new URL(`${this._url}/compare`);
url.searchParams.append('left', leftHash);
url.searchParams.append('right', rightHash);
return this.requestJson(url.href);
}
}