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import {makeAutoObservable, runInAction} from 'mobx'
import {
AppBskyGraphGetMembers as GetMembers,
AppBskyActorRef as ActorRef,
APP_BSKY_GRAPH,
} from '@atproto/api'
import {AtUri} from '../../third-party/uri'
import {RootStoreModel} from './root-store'
export type MemberItem = GetMembers.Member & {
_reactKey: string
}
export class MembersViewModel {
// state
isLoading = false
isRefreshing = false
hasLoaded = false
error = ''
params: GetMembers.QueryParams
// data
subject: ActorRef.WithInfo = {
did: '',
handle: '',
displayName: '',
declaration: {cid: '', actorType: ''},
avatar: undefined,
}
members: MemberItem[] = []
constructor(
public rootStore: RootStoreModel,
params: GetMembers.QueryParams,
) {
makeAutoObservable(
this,
{
rootStore: false,
params: false,
},
{autoBind: true},
)
this.params = params
}
get hasContent() {
return this.members.length !== 0
}
get hasError() {
return this.error !== ''
}
get isEmpty() {
return this.hasLoaded && !this.hasContent
}
isMember(did: string) {
return this.members.find(member => member.did === did)
}
// public api
// =
async setup() {
await this._fetch()
}
async refresh() {
await this._fetch(true)
}
async loadMore() {
// TODO
}
async removeMember(did: string) {
const assertsRes = await this.rootStore.api.app.bsky.graph.getAssertions({
author: this.subject.did,
subject: did,
assertion: APP_BSKY_GRAPH.AssertMember,
})
if (assertsRes.data.assertions.length < 1) {
throw new Error('Could not find membership record')
}
for (const assert of assertsRes.data.assertions) {
await this.rootStore.api.app.bsky.graph.assertion.delete({
did: this.subject.did,
rkey: new AtUri(assert.uri).rkey,
})
}
runInAction(() => {
this.members = this.members.filter(m => m.did !== did)
})
}
// state transitions
// =
private _xLoading(isRefreshing = false) {
this.isLoading = true
this.isRefreshing = isRefreshing
this.error = ''
}
private _xIdle(err: string = '') {
this.isLoading = false
this.isRefreshing = false
this.hasLoaded = true
this.error = err
}
// loader functions
// =
private async _fetch(isRefreshing = false) {
this._xLoading(isRefreshing)
try {
const res = await this.rootStore.api.app.bsky.graph.getMembers(
this.params,
)
this._replaceAll(res)
this._xIdle()
} catch (e: any) {
this._xIdle(`Failed to load feed: ${e.toString()}`)
}
}
private _replaceAll(res: GetMembers.Response) {
this.subject.did = res.data.subject.did
this.subject.handle = res.data.subject.handle
this.subject.displayName = res.data.subject.displayName
this.subject.declaration = res.data.subject.declaration
this.subject.avatar = res.data.subject.avatar
this.members.length = 0
let counter = 0
for (const item of res.data.members) {
this._append({_reactKey: `item-${counter++}`, ...item})
}
}
private _append(item: MemberItem) {
this.members.push(item)
}
}
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