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import {makeAutoObservable} from 'mobx'
import {AppBskyFeedGetSavedFeeds as GetSavedFeeds} from '@atproto/api'
import {RootStoreModel} from '../../root-store'
import {bundleAsync} from 'lib/async/bundle'
import {cleanError} from 'lib/strings/errors'
import {AlgoItemModel} from './algo-item'
import {hasProp, isObj} from 'lib/type-guards'
const PAGE_SIZE = 30
export class SavedFeedsModel {
// state
isLoading = false
isRefreshing = false
hasLoaded = false
error = ''
hasMore = true
loadMoreCursor?: string
// data
feeds: AlgoItemModel[] = []
pinned: AlgoItemModel[] = []
constructor(public rootStore: RootStoreModel) {
makeAutoObservable(
this,
{
rootStore: false,
},
{autoBind: true},
)
}
serialize() {
return {
pinned: this.pinned.map(f => f.serialize()),
}
}
hydrate(v: unknown) {
if (isObj(v)) {
if (hasProp(v, 'pinned')) {
const pinnedSerialized = (v as any).pinned as string[]
const pinnedDeserialized = pinnedSerialized.map(
(s: string) => new AlgoItemModel(this.rootStore, JSON.parse(s)),
)
this.pinned = pinnedDeserialized
}
}
}
get hasContent() {
return this.feeds.length > 0
}
get hasError() {
return this.error !== ''
}
get isEmpty() {
return this.hasLoaded && !this.hasContent
}
get numOfFeeds() {
return this.feeds.length
}
get listOfFeedNames() {
return this.feeds.map(
f => f.data.displayName ?? f.data.creator.displayName + "'s feed",
)
}
get listOfPinnedFeedNames() {
return this.pinned.map(
f => f.data.displayName ?? f.data.creator.displayName + "'s feed",
)
}
get savedFeedsWithoutPinned() {
return this.feeds.filter(
f => !this.pinned.find(p => p.data.uri === f.data.uri),
)
}
togglePinnedFeed(feed: AlgoItemModel) {
if (!this.isPinned(feed)) {
this.pinned.push(feed)
} else {
this.removePinnedFeed(feed.data.uri)
}
}
removePinnedFeed(uri: string) {
this.pinned = this.pinned.filter(f => f.data.uri !== uri)
}
reorderPinnedFeeds(temp: AlgoItemModel[]) {
this.pinned = temp
}
isPinned(feed: AlgoItemModel) {
return this.pinned.find(f => f.data.uri === feed.data.uri) ? true : false
}
// public api
// =
async refresh() {
return this.loadMore(true)
}
clear() {
this.isLoading = false
this.isRefreshing = false
this.hasLoaded = false
this.error = ''
this.hasMore = true
this.loadMoreCursor = undefined
this.feeds = []
}
loadMore = bundleAsync(async (replace: boolean = false) => {
if (!replace && !this.hasMore) {
return
}
this._xLoading(replace)
try {
const res = await this.rootStore.agent.app.bsky.feed.getSavedFeeds({
limit: PAGE_SIZE,
cursor: replace ? undefined : this.loadMoreCursor,
})
if (replace) {
this._replaceAll(res)
} else {
this._appendAll(res)
}
this._xIdle()
} catch (e: any) {
this._xIdle(e)
}
})
removeFeed(uri: string) {
this.feeds = this.feeds.filter(f => f.data.uri !== uri)
}
addFeed(algoItem: AlgoItemModel) {
this.feeds.push(new AlgoItemModel(this.rootStore, algoItem.data))
}
async save(algoItem: AlgoItemModel) {
try {
await this.rootStore.agent.app.bsky.feed.saveFeed({
feed: algoItem.getUri,
})
algoItem.toggleSaved = true
this.addFeed(algoItem)
} catch (e: any) {
this.rootStore.log.error('Failed to save feed', e)
}
}
async unsave(algoItem: AlgoItemModel) {
const uri = algoItem.getUri
try {
await this.rootStore.agent.app.bsky.feed.unsaveFeed({
feed: uri,
})
algoItem.toggleSaved = false
this.removeFeed(uri)
this.removePinnedFeed(uri)
} catch (e: any) {
this.rootStore.log.error('Failed to unsanve feed', e)
}
}
// state transitions
// =
_xLoading(isRefreshing = false) {
this.isLoading = true
this.isRefreshing = isRefreshing
this.error = ''
}
_xIdle(err?: any) {
this.isLoading = false
this.isRefreshing = false
this.hasLoaded = true
this.error = cleanError(err)
if (err) {
this.rootStore.log.error('Failed to fetch user followers', err)
}
}
// helper functions
// =
_replaceAll(res: GetSavedFeeds.Response) {
this.feeds = []
this._appendAll(res)
}
_appendAll(res: GetSavedFeeds.Response) {
this.loadMoreCursor = res.data.cursor
this.hasMore = !!this.loadMoreCursor
for (const f of res.data.feeds) {
this.feeds.push(new AlgoItemModel(this.rootStore, f))
}
}
}
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