Add persistent state provider (#1830)

* Add persistent state provider

* Catch write error

* Handle read errors, update error msgs

* Fix lint

* Don't provide initial state to loader

* Remove colorMode from shell state

* Idea: hook into persisted context from other files

* Migrate settings to new hook

* Rework persisted state to split individual contexts

* Tweak persisted schema and validation

---------

Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/state/models/root-store.ts

@@ -74,7 +74,6 @@ export class RootStoreModel {
       session: this.session.serialize(),
       me: this.me.serialize(),
       onboarding: this.onboarding.serialize(),
-      shell: this.shell.serialize(),
       preferences: this.preferences.serialize(),
       invitedUsers: this.invitedUsers.serialize(),
       mutedThreads: this.mutedThreads.serialize(),
@@ -99,9 +98,6 @@ export class RootStoreModel {
       if (hasProp(v, 'session')) {
         this.session.hydrate(v.session)
       }
-      if (hasProp(v, 'shell')) {
-        this.shell.hydrate(v.shell)
-      }
       if (hasProp(v, 'preferences')) {
         this.preferences.hydrate(v.preferences)
       }

src/state/models/ui/shell.ts

@@ -2,13 +2,11 @@ import {AppBskyEmbedRecord, AppBskyActorDefs, ModerationUI} from '@atproto/api'
 import {RootStoreModel} from '../root-store'
 import {makeAutoObservable, runInAction} from 'mobx'
 import {ProfileModel} from '../content/profile'
-import {isObj, hasProp} from 'lib/type-guards'
 import {Image as RNImage} from 'react-native-image-crop-picker'
 import {ImageModel} from '../media/image'
 import {ListModel} from '../content/list'
 import {GalleryModel} from '../media/gallery'
 import {StyleProp, ViewStyle} from 'react-native'
-import {isWeb} from 'platform/detection'
 
 export type ColorMode = 'system' | 'light' | 'dark'
 
@@ -265,7 +263,6 @@ export interface ComposerOpts {
 }
 
 export class ShellUiModel {
-  colorMode: ColorMode = 'system'
   isModalActive = false
   activeModals: Modal[] = []
   isLightboxActive = false
@@ -276,40 +273,13 @@ export class ShellUiModel {
 
   constructor(public rootStore: RootStoreModel) {
     makeAutoObservable(this, {
-      serialize: false,
       rootStore: false,
-      hydrate: false,
     })
 
     this.setupClock()
     this.setupLoginModals()
   }
 
-  serialize(): unknown {
-    return {
-      colorMode: this.colorMode,
-    }
-  }
-
-  hydrate(v: unknown) {
-    if (isObj(v)) {
-      if (hasProp(v, 'colorMode') && isColorMode(v.colorMode)) {
-        this.setColorMode(v.colorMode)
-      }
-    }
-  }
-
-  setColorMode(mode: ColorMode) {
-    this.colorMode = mode
-
-    if (isWeb && typeof window !== 'undefined') {
-      const html = window.document.documentElement
-      // remove any other color mode classes
-      html.className = html.className.replace(/colorMode--\w+/g, '')
-      html.classList.add(`colorMode--${mode}`)
-    }
-  }
-
   /**
    * returns true if something was closed
    * (used by the android hardware back btn)