406 lines
11 KiB
TypeScript
406 lines
11 KiB
TypeScript
import { BehaviorSubject } from "rxjs";
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import { TeamCollection } from "./TeamCollection";
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import { TeamRequest } from "./TeamRequest";
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import { apolloClient } from "~/helpers/apollo";
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import { rootCollectionsOfTeam, getCollectionChildren, getCollectionRequests } from "./utils";
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import { gql } from "graphql-tag";
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import pull from "lodash/pull";
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import remove from "lodash/remove";
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function findParentOfColl(tree: TeamCollection[], collID: string, currentParent?: TeamCollection): TeamCollection | null {
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for (const coll of tree) {
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// If the root is parent, return null
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if (coll.id === collID) return currentParent ? currentParent : null
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// Else run it in children
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if (coll.children) {
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const result = findParentOfColl(coll.children, collID, coll)
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if (result) return result
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}
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}
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return null
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}
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function findCollInTree(tree: TeamCollection[], targetID: string): TeamCollection | null {
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for (const coll of tree) {
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// If the direct child matched, then return that
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if (coll.id === targetID) return coll
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// Else run it in the children
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if (coll.children) {
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const result = findCollInTree(coll.children, targetID)
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if (result) return result
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}
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}
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// If nothing matched, return null
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return null
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}
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function findCollWithReqIDInTree(tree: TeamCollection[], reqID: string): TeamCollection | null {
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for (const coll of tree) {
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// Check in root collections (if expanded)
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if (coll.requests) {
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if (coll.requests.find(req => req.id === reqID)) return coll
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}
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// Check in children of collections
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if (coll.children) {
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const result = findCollWithReqIDInTree(coll.children, reqID)
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if (result) return result
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}
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}
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// No matches
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return null
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}
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function findReqInTree(tree: TeamCollection[], reqID: string): TeamRequest | null {
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for (const coll of tree) {
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// Check in root collections (if expanded)
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if (coll.requests) {
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const match = coll.requests.find(req => req.id === reqID)
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if (match) return match
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}
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// Check in children of collections
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if (coll.children) {
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const match = findReqInTree(coll.children, reqID)
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if (match) return match
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}
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}
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// No matches
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return null
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}
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function updateCollInTree(tree: TeamCollection[], updateColl: Partial<TeamCollection> & Pick<TeamCollection, "id">) {
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const el = findCollInTree(tree, updateColl.id)
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// If no match, stop the operation
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if (!el) return
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// Update all the specified keys
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Object.assign(el, updateColl)
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}
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function deleteCollInTree(tree: TeamCollection[], targetID: string) {
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// Get the parent owning the collection
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const parent = findParentOfColl(tree, targetID)
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// If we found a parent, update it
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if (parent && parent.children) {
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parent.children = parent.children.filter(coll => coll.id !== targetID)
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}
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// If there is no parent, it could mean:
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// 1. The collection with that ID does not exist
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// 2. The collection is in root (therefore, no parent)
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// Let's look for element, if not exist, then stop
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const el = findCollInTree(tree, targetID)
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if (!el) return
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// Collection exists, so this should be in root, hence removing element
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pull(tree, el)
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}
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/**
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* TeamCollectionAdapter provides a reactive collections list for a specific team
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*/
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export default class TeamCollectionAdapter {
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/**
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* The reactive list of collections
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*
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* A new value is emitted when there is a change
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* (Use views instead)
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*/
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collections$: BehaviorSubject<TeamCollection[]>
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private teamCollectionAdded$: ZenObservable.Subscription | null
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private teamCollectionUpdated$: ZenObservable.Subscription | null
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private teamCollectionRemoved$: ZenObservable.Subscription | null
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private teamRequestAdded$: ZenObservable.Subscription | null
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private teamRequestUpdated$: ZenObservable.Subscription | null
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private teamRequestDeleted$: ZenObservable.Subscription | null
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/**
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* @constructor
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*
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* @param {string} teamID - ID of the team to listen to
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*/
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constructor (private teamID: string | null) {
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this.collections$ = new BehaviorSubject<TeamCollection[]>([]);
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this.teamCollectionAdded$ = null;
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this.teamCollectionUpdated$ = null;
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this.teamCollectionRemoved$ = null;
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this.teamRequestAdded$ = null;
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this.teamRequestDeleted$ = null;
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this.teamRequestUpdated$ = null;
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this.initialize();
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}
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changeTeamID(newTeamID: string | null) {
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this.collections$.next([]);
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this.teamID = newTeamID;
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if (this.teamID) this.initialize();
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}
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unsubscribeSubscriptions() {
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this.teamCollectionAdded$?.unsubscribe();
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this.teamCollectionUpdated$?.unsubscribe();
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this.teamCollectionRemoved$?.unsubscribe();
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this.teamRequestAdded$?.unsubscribe();
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this.teamRequestDeleted$?.unsubscribe();
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this.teamRequestUpdated$?.unsubscribe();
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}
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private async initialize() {
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await this.loadRootCollections();
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this.registerSubscriptions();
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}
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private async loadRootCollections(): Promise<void> {
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const colls = await rootCollectionsOfTeam(apolloClient, this.teamID)
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this.collections$.next(colls);
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}
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private addCollection(collection: TeamCollection, parentCollectionID: string | null) {
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const tree = this.collections$.value
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if (!parentCollectionID) {
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tree.push(collection);
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} else {
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const parentCollection = findCollInTree(tree, parentCollectionID)
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if (!parentCollection) return
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if (parentCollection.children != null) {
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parentCollection.children.push(collection)
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} else {
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parentCollection.children = [collection]
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}
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}
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this.collections$.next(tree)
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}
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private updateCollection(collectionUpdate: Partial<TeamCollection> & Pick<TeamCollection, 'id'>) {
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const tree = this.collections$.value
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updateCollInTree(tree, collectionUpdate)
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this.collections$.next(tree)
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}
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private removeCollection(collectionID: string) {
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const tree = this.collections$.value
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deleteCollInTree(tree, collectionID)
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this.collections$.next(tree)
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}
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private addRequest(request: TeamRequest) {
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const tree = this.collections$.value
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// Check if we have the collection (if not, then not loaded?)
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const coll = findCollInTree(tree, request.collectionID)
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if (!coll) return // Ignore add request
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// Collection is not expanded
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if (!coll.requests) return
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// Collection is expanded hence append request
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coll.requests.push(request)
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this.collections$.next(tree)
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}
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private removeRequest(requestID: string) {
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const tree = this.collections$.value
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// Find request in tree, don't attempt if no collection or no requests (expansion?)
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const coll = findCollWithReqIDInTree(tree, requestID)
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if (!coll || !coll.requests) return
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// Remove the collection
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remove(coll.requests, req => req.id === requestID)
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// Publish new tree
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this.collections$.next(tree)
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}
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private updateRequest(requestUpdate: Partial<TeamRequest> & Pick<TeamRequest, 'id'>) {
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const tree = this.collections$.value
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// Find request, if not present, don't update
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const req = findReqInTree(tree, requestUpdate.id)
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if (!req) return
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Object.assign(req, requestUpdate)
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}
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registerSubscriptions() {
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this.teamCollectionAdded$ = apolloClient.subscribe({
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query: gql`
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subscription TeamCollectionAdded($teamID: String!) {
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teamCollectionAdded(teamID: $teamID) {
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id
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title
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parent {
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id
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}
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}
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.addCollection({
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id: data.teamCollectionAdded.id,
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children: null,
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requests: null,
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title: data.teamCollectionAdded.title
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}, data.teamCollectionAdded.parent?.id)
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});
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this.teamCollectionUpdated$ = apolloClient.subscribe({
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query: gql`
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subscription TeamCollectionUpdated($teamID: String!) {
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teamCollectionUpdated(teamID: $teamID) {
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id
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title
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parent {
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id
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}
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}
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.updateCollection({
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id: data.teamCollectionUpdated.id,
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title: data.teamCollectionUpdated.title
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});
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});
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this.teamCollectionRemoved$ = apolloClient.subscribe({
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query: gql`
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subscription TeamCollectionRemoved($teamID: String!) {
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teamCollectionRemoved(teamID: $teamID)
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.removeCollection(data.teamCollectionRemoved)
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})
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this.teamRequestAdded$ = apolloClient.subscribe({
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query: gql`
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subscription TeamRequestAdded($teamID: String!) {
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teamRequestAdded(teamID: $teamID) {
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id
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collectionID
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request
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title
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}
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.addRequest({
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id: data.teamRequestAdded.id,
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collectionID: data.teamRequestAdded.collectionID,
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request: JSON.parse(data.teamRequestAdded.request),
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title: data.teamRequestAdded.title
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})
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})
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this.teamRequestUpdated$ = apolloClient.subscribe({
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query: gql`
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subscription TeamRequestUpdated($teamID: String!) {
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teamRequestUpdated(teamID: $teamID) {
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id
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collectionID
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request
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title
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}
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.updateRequest({
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id: data.teamRequestUpdated.id,
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collectionID: data.teamRequestUpdated.collectionID,
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request: data.teamRequestUpdated.request,
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title: data.teamRequestUpdated.title
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})
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})
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this.teamRequestDeleted$ = apolloClient.subscribe({
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query: gql`
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subscription TeamRequestDeleted($teamID: String!) {
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teamRequestDeleted(teamID: $teamID)
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}
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`,
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variables: {
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teamID: this.teamID
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}
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}).subscribe(({ data }) => {
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this.removeRequest(data.teamRequestDeleted)
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})
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}
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async expandCollection(collectionID: string): Promise<void> {
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// TODO: While expanding one collection, block (or queue) the expansion of the other, to avoid race conditions
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const tree = this.collections$.value;
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const collection = findCollInTree(tree, collectionID)
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if (!collection) return
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if (collection.children != null) return
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const collections: TeamCollection[] = (await getCollectionChildren(apolloClient, collectionID))
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.map<TeamCollection>(el => {
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return {
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id: el.id,
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title: `debug-${el.title}`,
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children: null,
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requests: null
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}
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})
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const requests: TeamRequest[] = (await getCollectionRequests(apolloClient, collectionID))
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.map<TeamRequest>(el => {
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return {
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id: el.id,
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collectionID: collectionID,
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title: el.title,
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request: el.request
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}
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})
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collection.children = collections
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collection.requests = requests
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this.collections$.next(tree)
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}
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}
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