feat: Moments: your personal photo journal, now available in Labs (#2079)

packages/mobile/src/MobileWebAppContainer.tsx

@@ -253,6 +253,9 @@ const MobileWebAppContents = ({ destroyAndReload }: { destroyAndReload: () => vo
     return true
   }
 
+  const requireInlineMediaPlaybackForMomentsFeature = true
+  const requireMediaUserInteractionForMomentsFeature = false
+
   return (
     <WebView
       ref={webViewRef}
@@ -274,6 +277,8 @@ const MobileWebAppContents = ({ destroyAndReload }: { destroyAndReload: () => vo
       injectedJavaScriptBeforeContentLoaded={injectedJS}
       bounces={false}
       keyboardDisplayRequiresUserAction={false}
+      allowsInlineMediaPlayback={requireInlineMediaPlaybackForMomentsFeature}
+      mediaPlaybackRequiresUserAction={requireMediaUserInteractionForMomentsFeature}
       scalesPageToFit={true}
       /**
        * This disables the global window scroll but keeps scroll within div elements like lists and textareas.

packages/models/src/Domain/Syncable/UserPrefs/PrefKey.ts

@@ -39,6 +39,7 @@ export enum PrefKey {
   UpdateSavingStatusIndicator = 'updateSavingStatusIndicator',
   DarkMode = 'darkMode',
   DefaultEditorIdentifier = 'defaultEditorIdentifier',
+  MomentsDefaultTagUuid = 'momentsDefaultTagUuid',
 }
 
 export enum NewNoteTitleFormat {
@@ -103,4 +104,5 @@ export type PrefValue = {
   [PrefKey.UpdateSavingStatusIndicator]: boolean
   [PrefKey.DarkMode]: boolean
   [PrefKey.DefaultEditorIdentifier]: EditorIdentifier
+  [PrefKey.MomentsDefaultTagUuid]: string | undefined
 }

packages/services/src/Domain/Storage/StorageKeys.ts

@@ -40,6 +40,7 @@ export enum StorageKey {
   CodeVerifier = 'code_verifier',
   LaunchPriorityUuids = 'launch_priority_uuids',
   LastReadChangelogVersion = 'last_read_changelog_version',
+  MomentsEnabled = 'moments_enabled',
 }
 
 export enum NonwrappedStorageKey {

packages/web/src/javascripts/Application/Application.ts

@@ -24,7 +24,7 @@ import {
 } from '@standardnotes/snjs'
 import { makeObservable, observable } from 'mobx'
 import { PanelResizedData } from '@/Types/PanelResizedData'
-import { isDesktopApplication } from '@/Utils'
+import { isAndroid, isDesktopApplication, isIOS } from '@/Utils'
 import { DesktopManager } from './Device/DesktopManager'
 import {
   ArchiveManager,
@@ -45,6 +45,7 @@ import { WebServices } from './WebServices'
 import { FeatureName } from '@/Controllers/FeatureName'
 import { ItemGroupController } from '@/Components/NoteView/Controller/ItemGroupController'
 import { VisibilityObserver } from './VisibilityObserver'
+import { MomentsService } from '@/Controllers/Moments/MomentsService'
 
 export type WebEventObserver = (event: WebAppEvent, data?: unknown) => void
 
@@ -98,6 +99,11 @@ export class WebApplication extends SNApplication implements WebApplicationInter
       : undefined
     this.webServices.viewControllerManager = new ViewControllerManager(this, deviceInterface)
     this.webServices.changelogService = new ChangelogService(this.environment, this.storage)
+    this.webServices.momentsService = new MomentsService(
+      this,
+      this.webServices.viewControllerManager.filesController,
+      internalEventBus,
+    )
 
     if (this.isNativeMobileWeb()) {
       this.mobileWebReceiver = new MobileWebReceiver(this)
@@ -196,10 +202,22 @@ export class WebApplication extends SNApplication implements WebApplicationInter
     return this.webServices.viewControllerManager.paneController
   }
 
+  public get linkingController() {
+    return this.webServices.viewControllerManager.linkingController
+  }
+
   public get changelogService() {
     return this.webServices.changelogService
   }
 
+  public get momentsService() {
+    return this.webServices.momentsService
+  }
+
+  public get featuresController() {
+    return this.getViewControllerManager().featuresController
+  }
+
   public get desktopDevice(): DesktopDeviceInterface | undefined {
     if (isDesktopDevice(this.deviceInterface)) {
       return this.deviceInterface
@@ -212,6 +230,10 @@ export class WebApplication extends SNApplication implements WebApplicationInter
     return this.isNativeMobileWeb() && this.platform === Platform.Ios
   }
 
+  get isMobileDevice() {
+    return this.isNativeMobileWeb() || isIOS() || isAndroid()
+  }
+
   get hideOutboundSubscriptionLinks() {
     return this.isNativeIOS()
   }

packages/web/src/javascripts/Application/WebServices.ts

@@ -7,6 +7,7 @@ import {
   KeyboardService,
   ThemeManager,
 } from '@standardnotes/ui-services'
+import { MomentsService } from '@/Controllers/Moments/MomentsService'
 
 export type WebServices = {
   viewControllerManager: ViewControllerManager
@@ -16,4 +17,5 @@ export type WebServices = {
   themeService: ThemeManager
   keyboardService: KeyboardService
   changelogService: ChangelogServiceInterface
+  momentsService: MomentsService
 }

packages/web/src/javascripts/Components/Button/Button.tsx

@@ -1,6 +1,6 @@
 import { Ref, forwardRef, ReactNode, ComponentPropsWithoutRef } from 'react'
 
-type ButtonStyle = 'default' | 'contrast' | 'neutral' | 'info' | 'warning' | 'danger' | 'success'
+export type ButtonStyle = 'default' | 'contrast' | 'neutral' | 'info' | 'warning' | 'danger' | 'success'
 
 const getColorsForNormalVariant = (style: ButtonStyle) => {
   switch (style) {
@@ -21,7 +21,7 @@ const getColorsForNormalVariant = (style: ButtonStyle) => {
   }
 }
 
-const getColorsForPrimaryVariant = (style: ButtonStyle) => {
+export const getColorsForPrimaryVariant = (style: ButtonStyle) => {
   switch (style) {
     case 'default':
       return 'bg-default text-foreground'

packages/web/src/javascripts/Components/ContentListView/Header/DisplayOptionsMenu.tsx

@@ -365,8 +365,8 @@ const DisplayOptionsMenu: FunctionComponent<DisplayOptionsMenuProps> = ({
             <div className="flex flex-col pr-5">
               <div className="flex flex-row items-center">
                 <div className="text-base font-semibold uppercase text-text lg:text-xs">Daily Notebook</div>
-                <div className="ml-2 rounded bg-success px-1.5 py-[1px] text-[10px] font-bold text-success-contrast">
+                <div className="ml-2 rounded bg-warning px-1.5 py-[1px] text-[10px] font-bold text-warning-contrast">
-                  Experimental
+                  Labs
                 </div>
               </div>
               <div className="mt-1">Capture new notes daily with a calendar-based layout</div>

packages/web/src/javascripts/Components/ItemSelectionDropdown/ItemSelectionDropdown.tsx

@@ -0,0 +1,132 @@
+import { FOCUSABLE_BUT_NOT_TABBABLE } from '@/Constants/Constants'
+import { useCloseOnBlur } from '@/Hooks/useCloseOnBlur'
+import { doesItemMatchSearchQuery } from '@/Utils/Items/Search/doesItemMatchSearchQuery'
+import { Disclosure, DisclosurePanel } from '@reach/disclosure'
+import { classNames, ContentType, DecryptedItem, naturalSort } from '@standardnotes/snjs'
+import { observer } from 'mobx-react-lite'
+import { ChangeEventHandler, FocusEventHandler, useCallback, useEffect, useRef, useState } from 'react'
+import { useApplication } from '../ApplicationProvider'
+import LinkedItemMeta from '../LinkedItems/LinkedItemMeta'
+import Menu from '../Menu/Menu'
+
+type Props = {
+  contentTypes: ContentType[]
+  placeholder: string
+  onSelection: (item: DecryptedItem) => void
+}
+
+const ItemSelectionDropdown = ({ contentTypes, placeholder, onSelection }: Props) => {
+  const application = useApplication()
+
+  const [searchQuery, setSearchQuery] = useState('')
+  const [dropdownVisible, setDropdownVisible] = useState(false)
+
+  const [dropdownMaxHeight, setDropdownMaxHeight] = useState<number | 'auto'>('auto')
+  const containerRef = useRef<HTMLDivElement>(null)
+  const inputRef = useRef<HTMLInputElement>(null)
+  const searchResultsMenuRef = useRef<HTMLMenuElement>(null)
+  const [items, setItems] = useState<DecryptedItem[]>([])
+
+  const showDropdown = () => {
+    const { clientHeight } = document.documentElement
+    const inputRect = inputRef.current?.getBoundingClientRect()
+    if (inputRect) {
+      setDropdownMaxHeight(clientHeight - inputRect.bottom - 32 * 2)
+      setDropdownVisible(true)
+    }
+  }
+
+  const [closeOnBlur] = useCloseOnBlur(containerRef, (visible: boolean) => {
+    setDropdownVisible(visible)
+    setSearchQuery('')
+  })
+
+  const onBlur: FocusEventHandler = (event) => {
+    closeOnBlur(event)
+  }
+
+  const onSearchQueryChange: ChangeEventHandler<HTMLInputElement> = (event) => {
+    setSearchQuery(event.currentTarget.value)
+  }
+
+  const handleFocus = () => {
+    showDropdown()
+  }
+
+  useEffect(() => {
+    const searchableItems = naturalSort(application.items.getItems(contentTypes), 'title')
+    const filteredItems = searchableItems.filter((item) => {
+      return doesItemMatchSearchQuery(item, searchQuery, application)
+    })
+    setItems(filteredItems)
+  }, [searchQuery, application, contentTypes])
+
+  const onSelectItem = useCallback(
+    (item: DecryptedItem) => {
+      onSelection(item)
+      setSearchQuery('')
+      setDropdownVisible(false)
+    },
+    [onSelection],
+  )
+
+  return (
+    <div className="relative" ref={containerRef}>
+      <Disclosure open={dropdownVisible} onChange={showDropdown}>
+        <input
+          ref={inputRef}
+          className={classNames(
+            'mr-10 w-70',
+            'bg-transparent text-sm text-text focus:border-b-2 focus:border-solid focus:border-info lg:text-xs',
+            'no-border h-7 focus:shadow-none focus:outline-none',
+          )}
+          value={searchQuery}
+          onChange={onSearchQueryChange}
+          type="text"
+          placeholder={placeholder}
+          onFocus={handleFocus}
+          onBlur={onBlur}
+          autoComplete="off"
+        />
+
+        {dropdownVisible && (
+          <DisclosurePanel
+            className={classNames(
+              'mr-10 w-70',
+              'absolute z-dropdown-menu flex flex-col overflow-y-auto rounded bg-default py-2 shadow-main',
+            )}
+            style={{
+              maxHeight: dropdownMaxHeight,
+            }}
+            tabIndex={FOCUSABLE_BUT_NOT_TABBABLE}
+            onBlur={closeOnBlur}
+          >
+            <Menu
+              isOpen={dropdownVisible}
+              a11yLabel="Tag search results"
+              ref={searchResultsMenuRef}
+              shouldAutoFocus={false}
+            >
+              {items.map((item) => {
+                return (
+                  <button
+                    key={item.uuid}
+                    className={classNames(
+                      'flex w-full items-center justify-between gap-4 overflow-hidden py-2 px-3 hover:bg-contrast',
+                      'hover:text-foreground focus:bg-info-backdrop',
+                    )}
+                    onClick={() => onSelectItem(item)}
+                  >
+                    <LinkedItemMeta item={item} searchQuery={searchQuery} />
+                  </button>
+                )
+              })}
+            </Menu>
+          </DisclosurePanel>
+        )}
+      </Disclosure>
+    </div>
+  )
+}
+
+export default observer(ItemSelectionDropdown)

packages/web/src/javascripts/Components/LinkedItems/LinkedItemBubble.tsx

@@ -13,7 +13,7 @@ import { getTitleForLinkedTag } from '@/Utils/Items/Display/getTitleForLinkedTag
 
 type Props = {
   link: ItemLink
-  activateItem: (item: LinkableItem) => Promise<void>
+  activateItem?: (item: LinkableItem) => Promise<void>
   unlinkItem: LinkingController['unlinkItemFromSelectedItem']
   focusPreviousItem?: () => void
   focusNextItem?: () => void
@@ -59,7 +59,7 @@ const LinkedItemBubble = ({
   const onClick: MouseEventHandler = (event) => {
     if (wasClicked && event.target !== unlinkButtonRef.current) {
       setWasClicked(false)
-      void activateItem(link.item)
+      void activateItem?.(link.item)
     } else {
       setWasClicked(true)
     }

packages/web/src/javascripts/Components/Preferences/Panes/General/General.tsx

@@ -10,6 +10,7 @@ import Advanced from '@/Components/Preferences/Panes/General/Advanced/AdvancedSe
 import PreferencesPane from '../../PreferencesComponents/PreferencesPane'
 import Persistence from './Persistence'
 import SmartViews from './SmartViews/SmartViews'
+import Moments from './Moments'
 
 type Props = {
   viewControllerManager: ViewControllerManager
@@ -24,6 +25,7 @@ const General: FunctionComponent<Props> = ({ viewControllerManager, application,
     <Tools application={application} />
     <SmartViews application={application} featuresController={viewControllerManager.featuresController} />
     <LabsPane application={application} />
+    <Moments application={application} />
     <Advanced
       application={application}
       viewControllerManager={viewControllerManager}

packages/web/src/javascripts/Components/Preferences/Panes/General/Moments.tsx

@@ -0,0 +1,144 @@
+import { Pill, Subtitle, Text, Title } from '@/Components/Preferences/PreferencesComponents/Content'
+import { WebApplication } from '@/Application/Application'
+import { observer } from 'mobx-react-lite'
+import { FunctionComponent, useCallback, useEffect, useState } from 'react'
+import PreferencesGroup from '../../PreferencesComponents/PreferencesGroup'
+import PreferencesSegment from '../../PreferencesComponents/PreferencesSegment'
+import Button from '@/Components/Button/Button'
+import Switch from '@/Components/Switch/Switch'
+import { usePremiumModal } from '@/Hooks/usePremiumModal'
+import ItemSelectionDropdown from '@/Components/ItemSelectionDropdown/ItemSelectionDropdown'
+import { ContentType, DecryptedItem, PrefKey, SNTag } from '@standardnotes/snjs'
+import usePreference from '@/Hooks/usePreference'
+import LinkedItemBubble from '@/Components/LinkedItems/LinkedItemBubble'
+import { createLinkFromItem } from '@/Utils/Items/Search/createLinkFromItem'
+
+type Props = {
+  application: WebApplication
+}
+
+const Moments: FunctionComponent<Props> = ({ application }: Props) => {
+  const momentsEnabled = application.momentsService.isEnabled
+  const premiumModal = usePremiumModal()
+
+  const defaultTagId = usePreference<string>(PrefKey.MomentsDefaultTagUuid)
+  const [defaultTag, setDefaultTag] = useState<SNTag | undefined>()
+
+  useEffect(() => {
+    if (!defaultTagId) {
+      setDefaultTag(undefined)
+      return
+    }
+
+    const tag = application.items.findItem(defaultTagId) as SNTag | undefined
+    setDefaultTag(tag)
+  }, [defaultTagId, application])
+
+  const enable = useCallback(() => {
+    if (!application.featuresController.entitledToFiles) {
+      premiumModal.activate('Moments')
+      return
+    }
+    void application.momentsService.enableMoments()
+  }, [application, premiumModal])
+
+  const disable = useCallback(() => {
+    void application.momentsService.disableMoments()
+  }, [application])
+
+  const toggle = useCallback(() => {
+    if (momentsEnabled) {
+      disable()
+    } else {
+      enable()
+    }
+  }, [momentsEnabled, enable, disable])
+
+  const takePhoto = useCallback(() => {
+    if (!application.featuresController.entitledToFiles) {
+      premiumModal.activate('Moments')
+      return
+    }
+
+    void application.momentsService.takePhoto()
+  }, [application, premiumModal])
+
+  const selectTag = useCallback(
+    (tag: DecryptedItem) => {
+      void application.setPreference(PrefKey.MomentsDefaultTagUuid, tag.uuid)
+    },
+    [application],
+  )
+
+  const unselectTag = useCallback(async () => {
+    void application.setPreference(PrefKey.MomentsDefaultTagUuid, undefined)
+  }, [application])
+
+  return (
+    <PreferencesGroup>
+      <PreferencesSegment>
+        <div className="flex items-center justify-between">
+          <div className="flex items-start">
+            <Title>Moments</Title>
+            <Pill style={'warning'}>Labs</Pill>
+            <Pill style={'info'}>Professional</Pill>
+          </div>
+          <Switch onChange={toggle} checked={momentsEnabled} />
+        </div>
+
+        <Subtitle>Your personal photo journal</Subtitle>
+
+        {momentsEnabled && (
+          <div className="mb-2 flex items-center">
+            {defaultTag && (
+              <div>
+                <LinkedItemBubble
+                  className="m-1 mr-2"
+                  link={createLinkFromItem(defaultTag, 'linked')}
+                  unlinkItem={unselectTag}
+                  isBidirectional={false}
+                  inlineFlex={true}
+                />
+              </div>
+            )}
+            <ItemSelectionDropdown
+              onSelection={selectTag}
+              placeholder="Select tag to save Moments to..."
+              contentTypes={[ContentType.Tag]}
+            />
+          </div>
+        )}
+
+        <div className="flex items-center justify-between">
+          <div className="flex flex-col"></div>
+          <PreferencesSegment>
+            <Text>
+              Introducing Moments, a new feature in Standard Notes that lets you capture candid photos of yourself
+              throughout the day, right in the app. With Moments, you can create a visual record of your life, one photo
+              at a time.
+            </Text>
+
+            <Text className="mt-3">
+              Moments uses your webcam or mobile selfie-cam to take a photo of you every half hour, ensuring that you
+              have a complete record of your day. And because all photos are end-to-end encrypted and stored in your
+              private account, you can trust that your memories are safe and secure.
+            </Text>
+
+            <Text className="mt-3">
+              Whether you're working at your computer or capturing notes on the go from your mobile device, Moments is a
+              fun and easy way to document your life. Plus, with customizable photo intervals coming soon, you'll be
+              able to tailor Moments to your unique needs. Enable Moments on a per-device basis to get started.
+            </Text>
+            <div className="mt-5 flex flex-row flex-wrap gap-3">
+              <Button colorStyle="info" onClick={takePhoto}>
+                Capture Present Moment
+              </Button>
+            </div>
+          </PreferencesSegment>
+        </div>
+      </PreferencesSegment>
+    </PreferencesGroup>
+  )
+}
+
+export default observer(Moments)

packages/web/src/javascripts/Components/Preferences/Panes/General/Tools.tsx

@@ -7,7 +7,6 @@ import { FunctionComponent, useState } from 'react'
 import PreferencesGroup from '../../PreferencesComponents/PreferencesGroup'
 import PreferencesSegment from '../../PreferencesComponents/PreferencesSegment'
 import { PrefDefaults } from '@/Constants/PrefDefaults'
-import HorizontalSeparator from '@/Components/Shared/HorizontalSeparator'
 
 type Props = {
   application: WebApplication
@@ -28,7 +27,6 @@ const Tools: FunctionComponent<Props> = ({ application }: Props) => {
       <PreferencesSegment>
         <Title>Tools</Title>
         <div>
-          <HorizontalSeparator classes="my-4" />
           <div className="flex items-center justify-between">
             <div className="flex flex-col">
               <Subtitle>Show note saving status while editing</Subtitle>

packages/web/src/javascripts/Components/Preferences/PreferencesComponents/Content.tsx

@@ -1,3 +1,4 @@
+import { ButtonStyle, getColorsForPrimaryVariant } from '@/Components/Button/Button'
 import { classNames } from '@standardnotes/utils'
 import { FunctionComponent, MouseEventHandler, ReactNode } from 'react'
 
@@ -37,3 +38,14 @@ export const LinkButton: FunctionComponent<{
     {label}
   </a>
 )
+
+type PillProps = Props & {
+  style: ButtonStyle
+}
+
+export const Pill: FunctionComponent<PillProps> = ({ children, className, style }) => {
+  const colorClass = getColorsForPrimaryVariant(style)
+  return (
+    <div className={classNames('ml-2 rounded px-2 py-1 text-[10px] font-bold', className, colorClass)}>{children}</div>
+  )
+}

packages/web/src/javascripts/Controllers/LinkingController.tsx

@@ -240,7 +240,7 @@ export class LinkingController extends AbstractViewController {
     }
   }
 
-  linkItems = async (item: LinkableItem, itemToLink: LinkableItem) => {
+  linkItems = async (item: SNNote | FileItem, itemToLink: LinkableItem) => {
     if (item instanceof SNNote) {
       if (itemToLink instanceof FileItem) {
         await this.application.items.associateFileWithNote(itemToLink, item)
@@ -248,6 +248,8 @@ export class LinkingController extends AbstractViewController {
         await this.application.items.linkNoteToNote(item, itemToLink)
       } else if (itemToLink instanceof SNTag) {
         await this.addTagToItem(itemToLink, item)
+      } else {
+        throw Error('Invalid item type')
       }
     } else if (item instanceof FileItem) {
       if (itemToLink instanceof SNNote) {
@@ -256,7 +258,11 @@ export class LinkingController extends AbstractViewController {
         await this.application.items.linkFileToFile(item, itemToLink)
       } else if (itemToLink instanceof SNTag) {
         await this.addTagToItem(itemToLink, item)
+      } else {
+        throw Error('Invalid item to link')
       }
+    } else {
+      throw new Error('First item must be a note or file')
     }
 
     void this.application.sync.sync()

packages/web/src/javascripts/Controllers/Moments/CameraUtils.ts

@@ -0,0 +1,65 @@
+export async function awaitVideoReady(video: HTMLVideoElement) {
+  return new Promise((resolve) => {
+    video.addEventListener('canplaythrough', () => {
+      resolve(null)
+    })
+  })
+}
+
+export function stopCameraStream(canvas: HTMLCanvasElement, video: HTMLVideoElement, stream: MediaStream) {
+  video.pause()
+  video.parentElement?.removeChild(video)
+  canvas.parentElement?.removeChild(canvas)
+  video.remove()
+  canvas.remove()
+
+  stream.getTracks().forEach((track) => {
+    track.stop()
+  })
+}
+
+export async function takePhoto(
+  filename: string,
+  canvas: HTMLCanvasElement,
+  video: HTMLVideoElement,
+  width: number,
+  height: number,
+): Promise<File | undefined> {
+  const context = canvas.getContext('2d')
+  context?.drawImage(video, 0, 0, width, height)
+  const dataUrl = canvas.toDataURL('image/png')
+
+  const isFailedImage = dataUrl.length < 100000
+
+  if (isFailedImage) {
+    return undefined
+  }
+
+  const res: Response = await fetch(dataUrl)
+  const blob: Blob = await res.blob()
+  const file = new File([blob], filename, { type: 'image/png' })
+  return file
+}
+
+export async function preparePhotoOperation() {
+  const stream = await navigator.mediaDevices.getUserMedia({ video: true, audio: false })
+  const video = document.createElement('video')
+  video.playsInline = true
+  video.style.position = 'absolute'
+  video.style.display = 'none'
+  const canvas = document.createElement('canvas')
+  document.body.append(video)
+  video.srcObject = stream
+  await video.play()
+  await awaitVideoReady(video)
+
+  const videoTrack = stream.getVideoTracks()[0]
+  const settings = videoTrack.getSettings()
+  const width = settings.width ?? 1280
+  const height = settings.height ?? 720
+
+  canvas.width = width
+  canvas.height = height
+
+  return { canvas, video, stream, width, height }
+}

packages/web/src/javascripts/Controllers/Moments/MomentsService.ts

@@ -0,0 +1,119 @@
+import { addToast, dismissToast, ToastType } from '@standardnotes/toast'
+import { ApplicationEvent, InternalEventBus, StorageKey } from '@standardnotes/services'
+import { isDev } from '@/Utils'
+import { FileItem, PrefKey, sleep, SNTag } from '@standardnotes/snjs'
+import { FilesController } from '../FilesController'
+import { preparePhotoOperation, takePhoto, stopCameraStream } from './CameraUtils'
+import { action, makeObservable, observable } from 'mobx'
+import { AbstractViewController } from '@/Controllers/Abstract/AbstractViewController'
+import { WebApplication } from '@/Application/Application'
+import { dateToStringStyle1 } from '@/Utils/DateUtils'
+
+const EVERY_HALF_HOUR = 1000 * 60 * 30
+const EVERY_TEN_SECONDS = 1000 * 10
+const DEBUG_MODE = isDev && false
+
+const DELAY_AFTER_STARTING_CAMERA_TO_ALLOW_MOBILE_AUTOFOCUS = 2000
+
+export class MomentsService extends AbstractViewController {
+  isEnabled = false
+  private intervalReference: ReturnType<typeof setInterval> | undefined
+
+  constructor(application: WebApplication, private filesController: FilesController, eventBus: InternalEventBus) {
+    super(application, eventBus)
+
+    this.disposers.push(
+      application.addEventObserver(async () => {
+        this.isEnabled = (this.application.getValue(StorageKey.MomentsEnabled) as boolean) ?? false
+        if (this.isEnabled) {
+          void this.beginTakingPhotos()
+        }
+      }, ApplicationEvent.Launched),
+    )
+
+    makeObservable(this, {
+      isEnabled: observable,
+
+      enableMoments: action,
+      disableMoments: action,
+    })
+  }
+
+  override deinit() {
+    super.deinit()
+    ;(this.application as unknown) = undefined
+    ;(this.filesController as unknown) = undefined
+  }
+
+  public enableMoments = (): void => {
+    this.application.setValue(StorageKey.MomentsEnabled, true)
+
+    this.isEnabled = true
+
+    void this.beginTakingPhotos()
+  }
+
+  public disableMoments = (): void => {
+    this.application.setValue(StorageKey.MomentsEnabled, false)
+
+    this.isEnabled = false
+
+    clearInterval(this.intervalReference)
+  }
+
+  private beginTakingPhotos() {
+    void this.takePhoto()
+
+    this.intervalReference = setInterval(
+      () => {
+        void this.takePhoto()
+      },
+      DEBUG_MODE ? EVERY_TEN_SECONDS : EVERY_HALF_HOUR,
+    )
+  }
+
+  private getDefaultTag(): SNTag | undefined {
+    const defaultTagId = this.application.getPreference(PrefKey.MomentsDefaultTagUuid)
+
+    if (defaultTagId) {
+      return this.application.items.findItem(defaultTagId)
+    }
+  }
+
+  public async takePhoto(): Promise<FileItem[] | undefined> {
+    const toastId = addToast({
+      type: ToastType.Loading,
+      message: 'Capturing Moment...',
+    })
+
+    const { canvas, video, stream, width, height } = await preparePhotoOperation()
+
+    const filename = `Moment ${dateToStringStyle1(new Date())}.png`
+
+    if (this.application.isMobileDevice) {
+      await sleep(DELAY_AFTER_STARTING_CAMERA_TO_ALLOW_MOBILE_AUTOFOCUS)
+    }
+
+    let file = await takePhoto(filename, canvas, video, width, height)
+    if (!file) {
+      await sleep(1000)
+      file = await takePhoto(filename, canvas, video, width, height)
+      if (!file) {
+        return undefined
+      }
+    }
+
+    dismissToast(toastId)
+
+    const uploadedFile = await this.filesController.uploadNewFile(file)
+
+    const defaultTag = this.getDefaultTag()
+    if (defaultTag && uploadedFile) {
+      void this.application.linkingController.linkItems(uploadedFile[0], defaultTag)
+    }
+
+    stopCameraStream(canvas, video, stream)
+
+    return uploadedFile
+  }
+}

packages/web/src/javascripts/Hooks/usePreference.tsx

@@ -0,0 +1,19 @@
+import { useApplication } from '@/Components/ApplicationProvider'
+import { ApplicationEvent, PrefKey } from '@standardnotes/snjs'
+import { useEffect, useState } from 'react'
+
+export default function usePreference<T>(preference: PrefKey) {
+  const application = useApplication()
+
+  const [value, setValue] = useState<T>(application.getPreference(preference) as T)
+
+  useEffect(() => {
+    return application.addEventObserver(async () => {
+      const latestValue = application.getPreference(preference)
+
+      setValue(latestValue as T)
+    }, ApplicationEvent.PreferencesChanged)
+  }, [application, preference])
+
+  return value
+}

packages/web/src/javascripts/Utils/Utils.ts

@@ -177,6 +177,8 @@ export const isIOS = () =>
   (navigator.userAgent.includes('Mac') && 'ontouchend' in document && navigator.maxTouchPoints > 1) ||
   window.platform === Platform.Ios
 
+export const isAndroid = () => navigator.userAgent.toLowerCase().includes('android')
+
 // https://stackoverflow.com/a/57527009/2504429
 export const disableIosTextFieldZoom = () => {
   const addMaximumScaleToMetaViewport = () => {