4 files changed, 160 insertions, 5 deletions
diff --git a/src/state/models/badges-view.ts b/src/state/models/badges-view.ts
new file mode 100644
index 000000000..644ec7d9e
--- /dev/null
+++ b/src/state/models/badges-view.ts
@@ -0,0 +1,49 @@
+import {makeAutoObservable} from 'mobx'
+import {RootStoreModel} from './root-store'
+
+// TODO / DEBUG
+// this is a temporary fake for the model until the view actually gets implemented in the bsky api
+// -prf
+
+export class BadgesViewModel {
+  // state
+  isLoading = false
+  isRefreshing = false
+  hasLoaded = false
+  error = ''
+
+  constructor(public rootStore: RootStoreModel) {
+    makeAutoObservable(
+      this,
+      {
+        rootStore: false,
+      },
+      {autoBind: true},
+    )
+  }
+
+  get hasContent() {
+    return false
+  }
+
+  get hasError() {
+    return this.error !== ''
+  }
+
+  get isEmpty() {
+    return this.hasLoaded && !this.hasContent
+  }
+
+  // public api
+  // =
+
+  async setup() {
+    this.hasLoaded = true
+  }
+
+  async refresh() {}
+
+  async loadMore() {}
+
+  async update() {}
+}
diff --git a/src/state/models/feed-view.ts b/src/state/models/feed-view.ts
index e9405773c..9ba96764b 100644
--- a/src/state/models/feed-view.ts
+++ b/src/state/models/feed-view.ts
@@ -95,6 +95,7 @@ export class FeedViewModel implements bsky.FeedView.Response {
   isLoading = false
   isRefreshing = false
   hasLoaded = false
+  hasReachedEnd = false
   error = ''
   params: bsky.FeedView.Params
   _loadPromise: Promise<void> | undefined
@@ -244,7 +245,13 @@ export class FeedViewModel implements bsky.FeedView.Response {
         'blueskyweb.xyz:FeedView',
         params,
       )) as bsky.FeedView.Response
-      this._appendAll(res)
+      if (res.feed.length === 0) {
+        runInAction(() => {
+          this.hasReachedEnd = true
+        })
+      } else {
+        this._appendAll(res)
+      }
       this._xIdle()
     } catch (e: any) {
       this._xIdle(`Failed to load feed: ${e.toString()}`)
@@ -281,6 +288,7 @@ export class FeedViewModel implements bsky.FeedView.Response {
 
   private _replaceAll(res: bsky.FeedView.Response) {
     this.feed.length = 0
+    this.hasReachedEnd = false
     this._appendAll(res)
   }
 
diff --git a/src/state/models/profile-ui.ts b/src/state/models/profile-ui.ts
new file mode 100644
index 000000000..98a087aeb
--- /dev/null
+++ b/src/state/models/profile-ui.ts
@@ -0,0 +1,98 @@
+import {makeAutoObservable} from 'mobx'
+import {RootStoreModel} from './root-store'
+import {ProfileViewModel} from './profile-view'
+import {FeedViewModel} from './feed-view'
+import {BadgesViewModel} from './badges-view'
+
+export const SECTION_IDS = {
+  POSTS: 0,
+  BADGES: 1,
+}
+
+export interface ProfileUiParams {
+  user: string
+}
+
+export class ProfileUiModel {
+  // constants
+  static SELECTOR_ITEMS = ['Posts', 'Badges']
+
+  // data
+  profile: ProfileViewModel
+  feed: FeedViewModel
+  badges: BadgesViewModel
+
+  // ui state
+  selectedViewIndex = 0
+
+  constructor(
+    public rootStore: RootStoreModel,
+    public params: ProfileUiParams,
+  ) {
+    makeAutoObservable(
+      this,
+      {
+        rootStore: false,
+        params: false,
+      },
+      {autoBind: true},
+    )
+    this.profile = new ProfileViewModel(rootStore, {user: params.user})
+    this.feed = new FeedViewModel(rootStore, {author: params.user, limit: 10})
+    this.badges = new BadgesViewModel(rootStore)
+  }
+
+  get currentView(): FeedViewModel | BadgesViewModel {
+    if (this.selectedViewIndex === SECTION_IDS.POSTS) {
+      return this.feed
+    }
+    if (this.selectedViewIndex === SECTION_IDS.BADGES) {
+      return this.badges
+    }
+    throw new Error(`Invalid selector value: ${this.selectedViewIndex}`)
+  }
+
+  get isInitialLoading() {
+    const view = this.currentView
+    return view.isLoading && !view.isRefreshing && !view.hasContent
+  }
+
+  get isRefreshing() {
+    return this.profile.isRefreshing || this.currentView.isRefreshing
+  }
+
+  // public api
+  // =
+
+  setSelectedViewIndex(index: number) {
+    this.selectedViewIndex = index
+  }
+
+  async setup() {
+    await Promise.all([
+      this.profile
+        .setup()
+        .catch(err => console.error('Failed to fetch profile', err)),
+      this.feed
+        .setup()
+        .catch(err => console.error('Failed to fetch feed', err)),
+      this.badges
+        .setup()
+        .catch(err => console.error('Failed to fetch badges', err)),
+    ])
+  }
+
+  async update() {
+    await this.currentView.update()
+  }
+
+  async refresh() {
+    await Promise.all([this.profile.refresh(), this.currentView.refresh()])
+  }
+
+  async loadMore() {
+    if (!this.currentView.isLoading && !this.currentView.hasError) {
+      await this.currentView.loadMore()
+    }
+  }
+}
diff --git a/src/state/models/profile-view.ts b/src/state/models/profile-view.ts
index b245335f1..89c8a75d0 100644
--- a/src/state/models/profile-view.ts
+++ b/src/state/models/profile-view.ts
@@ -65,7 +65,7 @@ export class ProfileViewModel implements bsky.ProfileView.Response {
   }
 
   async refresh() {
-    await this._load()
+    await this._load(true)
   }
 
   async toggleFollowing() {
@@ -108,8 +108,8 @@ export class ProfileViewModel implements bsky.ProfileView.Response {
   // loader functions
   // =
 
-  private async _load() {
-    this._xLoading()
+  private async _load(isRefreshing = false) {
+    this._xLoading(isRefreshing)
     await new Promise(r => setTimeout(r, 250)) // DEBUG
     try {
       const res = (await this.rootStore.api.mainPds.view(
@@ -119,7 +119,7 @@ export class ProfileViewModel implements bsky.ProfileView.Response {
       this._replaceAll(res)
       this._xIdle()
     } catch (e: any) {
-      this._xIdle(`Failed to load feed: ${e.toString()}`)
+      this._xIdle(e.toString())
     }
   }