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import {makeAutoObservable, runInAction} from 'mobx'
import {RootStoreModel} from '../root-store'
import {bundleAsync} from 'lib/async/bundle'
import {cleanError} from 'lib/strings/errors'
import {FeedSourceModel} from '../content/feed-source'
import {track} from 'lib/analytics/analytics'
import {logger} from '#/logger'
export class SavedFeedsModel {
// state
isLoading = false
isRefreshing = false
hasLoaded = false
error = ''
// data
all: FeedSourceModel[] = []
constructor(public rootStore: RootStoreModel) {
makeAutoObservable(
this,
{
rootStore: false,
},
{autoBind: true},
)
}
get hasContent() {
return this.all.length > 0
}
get hasError() {
return this.error !== ''
}
get isEmpty() {
return this.hasLoaded && !this.hasContent
}
get pinned() {
return this.all.filter(feed => feed.isPinned)
}
get unpinned() {
return this.all.filter(feed => !feed.isPinned)
}
get pinnedFeedNames() {
return this.pinned.map(f => f.displayName)
}
// public api
// =
clear() {
this.all = []
}
/**
* Refresh the preferences then reload all feed infos
*/
refresh = bundleAsync(async () => {
this._xLoading(true)
try {
await this.rootStore.preferences.sync()
const uris = dedup(
this.rootStore.preferences.pinnedFeeds.concat(
this.rootStore.preferences.savedFeeds,
),
)
const feeds = uris.map(uri => new FeedSourceModel(this.rootStore, uri))
await Promise.all(feeds.map(f => f.setup()))
runInAction(() => {
this.all = feeds
this._updatePinSortOrder()
})
this._xIdle()
} catch (e: any) {
this._xIdle(e)
}
})
async reorderPinnedFeeds(feeds: FeedSourceModel[]) {
this._updatePinSortOrder(feeds.map(f => f.uri))
await this.rootStore.preferences.setSavedFeeds(
this.rootStore.preferences.savedFeeds,
feeds.filter(feed => feed.isPinned).map(feed => feed.uri),
)
}
async movePinnedFeed(item: FeedSourceModel, direction: 'up' | 'down') {
const pinned = this.rootStore.preferences.pinnedFeeds.slice()
const index = pinned.indexOf(item.uri)
if (index === -1) {
return
}
if (direction === 'up' && index !== 0) {
;[pinned[index], pinned[index - 1]] = [pinned[index - 1], pinned[index]]
} else if (direction === 'down' && index < pinned.length - 1) {
;[pinned[index], pinned[index + 1]] = [pinned[index + 1], pinned[index]]
}
this._updatePinSortOrder(pinned.concat(this.unpinned.map(f => f.uri)))
await this.rootStore.preferences.setSavedFeeds(
this.rootStore.preferences.savedFeeds,
pinned,
)
track('CustomFeed:Reorder', {
name: item.displayName,
uri: item.uri,
index: pinned.indexOf(item.uri),
})
}
// 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) {
logger.error('Failed to fetch user feeds', {err})
}
}
// helpers
// =
_updatePinSortOrder(order?: string[]) {
order ??= this.rootStore.preferences.pinnedFeeds.concat(
this.rootStore.preferences.savedFeeds,
)
this.all.sort((a, b) => {
return order!.indexOf(a.uri) - order!.indexOf(b.uri)
})
}
}
function dedup(strings: string[]): string[] {
return Array.from(new Set(strings))
}
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