feat: add NIP-88 poll support

src/app/components/ComposeMenu.svelte

@@ -4,6 +4,7 @@
   import StarFallMinimalistic from "@assets/icons/star-fall-minimalistic.svg?dataurl"
   import NotesMinimalistic from "@assets/icons/notes-minimalistic.svg?dataurl"
   import CaseMinimalistic from "@assets/icons/case-minimalistic.svg?dataurl"
+  import Revote from "@assets/icons/revote.svg?dataurl"
   import Button from "@lib/components/Button.svelte"
   import Icon from "@lib/components/Icon.svelte"
   import {pushModal} from "@app/util/modal"
@@ -11,6 +12,7 @@
   import ThreadCreate from "@app/components/ThreadCreate.svelte"
   import ClassifiedCreate from "@app/components/ClassifiedCreate.svelte"
   import GoalCreate from "@app/components/GoalCreate.svelte"
+  import PollCreate from "@app/components/PollCreate.svelte"
 
   type Props = {
     url: string
@@ -28,6 +30,8 @@
 
   const createClassified = () => pushModal(ClassifiedCreate, {url, h})
 
+  const createPoll = () => pushModal(PollCreate, {url, h})
+
   let ul: Element
 
   onMount(() => {
@@ -60,4 +64,10 @@
       Create Thread
     </Button>
   </li>
+  <li>
+    <Button onclick={createPoll}>
+      <Icon size={4} icon={Revote} />
+      Poll
+    </Button>
+  </li>
 </ul>

src/app/components/NoteContent.svelte

@@ -1,10 +1,12 @@
 <script lang="ts">
   import type {ComponentProps} from "svelte"
   import {EVENT_TIME, ZAP_GOAL, THREAD, CLASSIFIED} from "@welshman/util"
+  import {Poll} from "nostr-tools/kinds"
   import NoteContentEventTime from "@app/components/NoteContentEventTime.svelte"
   import NoteContentThread from "@app/components/NoteContentThread.svelte"
   import NoteContentClassified from "@app/components/NoteContentClassified.svelte"
   import NoteContentGoal from "@app/components/NoteContentGoal.svelte"
+  import NoteContentPoll from "@app/components/NoteContentPoll.svelte"
   import Content from "@app/components/Content.svelte"
 
   const props: ComponentProps<typeof Content> = $props()
@@ -19,6 +21,8 @@
     <NoteContentClassified {...props} />
   {:else if props.event.kind === ZAP_GOAL}
     <NoteContentGoal {...props} />
+  {:else if props.event.kind === Poll}
+    <NoteContentPoll {...props} />
   {:else}
     <Content {...props} />
   {/if}

src/app/components/NoteContentMinimal.svelte

@@ -1,10 +1,12 @@
 <script lang="ts">
   import type {ComponentProps} from "svelte"
   import {EVENT_TIME, ZAP_GOAL, THREAD, CLASSIFIED} from "@welshman/util"
+  import {Poll} from "nostr-tools/kinds"
   import NoteContentMinimalEventTime from "@app/components/NoteContentMinimalEventTime.svelte"
   import NoteContentMinimalThread from "@app/components/NoteContentMinimalThread.svelte"
   import NoteContentMinimalClassified from "@app/components/NoteContentMinimalClassified.svelte"
   import NoteContentMinimalGoal from "@app/components/NoteContentMinimalGoal.svelte"
+  import NoteContentMinimalPoll from "@app/components/NoteContentMinimalPoll.svelte"
   import ContentMinimal from "@app/components/ContentMinimal.svelte"
 
   const props: ComponentProps<typeof ContentMinimal> = $props()
@@ -19,6 +21,8 @@
     <NoteContentMinimalClassified {...props} />
   {:else if props.event.kind === ZAP_GOAL}
     <NoteContentMinimalGoal {...props} />
+  {:else if props.event.kind === Poll}
+    <NoteContentMinimalPoll {...props} />
   {:else}
     <ContentMinimal {...props} />
   {/if}

src/app/components/NoteContentMinimalPoll.svelte

@@ -0,0 +1,22 @@
+<script lang="ts">
+  import type {ComponentProps} from "svelte"
+  import {derived} from "svelte/store"
+  import {PollResponse} from "nostr-tools/kinds"
+  import {repository} from "@welshman/app"
+  import {deriveArray, deriveEventsById} from "@welshman/store"
+  import ContentMinimal from "@app/components/ContentMinimal.svelte"
+  import {getPollResults} from "@app/util/polls"
+
+  const props: ComponentProps<typeof ContentMinimal> = $props()
+
+  const responses = deriveArray(
+    deriveEventsById({repository, filters: [{kinds: [PollResponse], "#e": [props.event.id]}]}),
+  )
+
+  const results = derived(responses, $responses => getPollResults(props.event, $responses))
+</script>
+
+<div class="flex flex-col gap-1">
+  <span class="text-sm">{props.event.content || "Poll"}</span>
+  <span class="text-xs opacity-50">{$results.voters} voter{$results.voters === 1 ? "" : "s"}</span>
+</div>

src/app/components/NoteContentPoll.svelte

@@ -0,0 +1,53 @@
+<script lang="ts">
+  import type {ComponentProps} from "svelte"
+  import {derived} from "svelte/store"
+  import {formatTimestampRelative} from "@welshman/lib"
+  import {PollResponse} from "nostr-tools/kinds"
+  import {repository} from "@welshman/app"
+  import {deriveArray, deriveEventsById} from "@welshman/store"
+  import Content from "@app/components/Content.svelte"
+  import {getPollEndsAt, getPollResults, getPollType, isPollClosed} from "@app/util/polls"
+
+  const props: ComponentProps<typeof Content> = $props()
+
+  const responses = deriveArray(
+    deriveEventsById({repository, filters: [{kinds: [PollResponse], "#e": [props.event.id]}]}),
+  )
+
+  const results = derived(responses, $responses => getPollResults(props.event, $responses))
+
+  const endsAt = getPollEndsAt(props.event)
+  const pollType = getPollType(props.event)
+  const closed = isPollClosed(props.event)
+</script>
+
+<div class="flex flex-col gap-3">
+  <div class="flex flex-wrap items-start justify-between gap-2">
+    <div class="min-w-0 flex-grow">
+      <p class="text-xl">{props.event.content || "Poll"}</p>
+      <p class="text-xs opacity-50">
+        {pollType === "multiplechoice" ? "Multiple choice" : "Single choice"}
+        {#if endsAt}
+          · Ends {formatTimestampRelative(endsAt)}
+        {/if}
+        {#if closed}
+          · Closed
+        {/if}
+      </p>
+    </div>
+    <p class="whitespace-nowrap text-xs opacity-50">{$results.voters} voter{$results.voters === 1 ? "" : "s"}</p>
+  </div>
+
+  <div class="flex flex-col gap-2">
+    {#each $results.options as option (option.id)}
+      {@const maxVotes = Math.max(...$results.options.map(item => item.votes), 1)}
+      <div class="flex flex-col gap-1">
+        <div class="flex items-center justify-between gap-2 text-sm">
+          <span class="truncate">{option.label}</span>
+          <span class="whitespace-nowrap opacity-75">{option.votes}</span>
+        </div>
+        <progress class="progress progress-primary" value={option.votes} max={maxVotes}></progress>
+      </div>
+    {/each}
+  </div>
+</div>

src/app/components/PollCreate.svelte

@@ -0,0 +1,166 @@
+<script lang="ts">
+  import {randomId, removeUndefined} from "@welshman/lib"
+  import {makeEvent} from "@welshman/util"
+  import {publishThunk} from "@welshman/app"
+  import {Poll} from "nostr-tools/kinds"
+  import {isMobile, preventDefault} from "@lib/html"
+  import AltArrowLeft from "@assets/icons/alt-arrow-left.svg?dataurl"
+  import PlusCircle from "@assets/icons/add-circle.svg?dataurl"
+  import MinusCircle from "@assets/icons/minus-circle.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import Field from "@lib/components/Field.svelte"
+  import FieldInline from "@lib/components/FieldInline.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import ModalHeader from "@lib/components/ModalHeader.svelte"
+  import ModalTitle from "@lib/components/ModalTitle.svelte"
+  import ModalSubtitle from "@lib/components/ModalSubtitle.svelte"
+  import ModalFooter from "@lib/components/ModalFooter.svelte"
+  import Modal from "@lib/components/Modal.svelte"
+  import ModalBody from "@lib/components/ModalBody.svelte"
+  import {pushToast} from "@app/util/toast"
+  import {PROTECTED} from "@app/core/state"
+  import {canEnforceNip70} from "@app/core/commands"
+
+  type Props = {
+    url: string
+    h?: string
+  }
+
+  const {url, h}: Props = $props()
+
+  const shouldProtect = canEnforceNip70(url)
+
+  const back = () => history.back()
+
+  const addOption = () => {
+    options = [...options, ""]
+  }
+
+  const removeOption = (index: number) => {
+    options = options.filter((_, optionIndex) => optionIndex !== index)
+  }
+
+  const submit = async () => {
+    if (!title.trim()) {
+      return pushToast({theme: "error", message: "Please provide a title for your poll."})
+    }
+
+    const nonEmptyOptions = removeUndefined(options.map(option => option.trim() || undefined))
+
+    if (nonEmptyOptions.length < 2) {
+      return pushToast({theme: "error", message: "Please provide at least two options."})
+    }
+
+    const parsedEndsAt = endsAt ? Math.floor(new Date(endsAt).getTime() / 1000) : undefined
+
+    const tags: string[][] = [
+      ...nonEmptyOptions.map(option => ["option", randomId(), option]),
+      ["polltype", pollType],
+      ["relay", url],
+    ]
+
+    if (parsedEndsAt) {
+      tags.push(["endsAt", String(parsedEndsAt)])
+    }
+
+    if (h) {
+      tags.push(["h", h])
+    }
+
+    if (await shouldProtect) {
+      tags.push(PROTECTED)
+    }
+
+    publishThunk({
+      relays: [url],
+      event: makeEvent(Poll, {content: title.trim(), tags}),
+    })
+
+    history.back()
+  }
+
+  let title = $state("")
+  let pollType = $state<"singlechoice" | "multiplechoice">("singlechoice")
+  let endsAt = $state("")
+  let options = $state(["Yes", "No"])
+</script>
+
+<Modal tag="form" onsubmit={preventDefault(submit)}>
+  <ModalBody>
+    <ModalHeader>
+      <ModalTitle>Create a Poll</ModalTitle>
+      <ModalSubtitle>Ask the room a question with one or more answers.</ModalSubtitle>
+    </ModalHeader>
+    <div class="col-8 relative">
+      <Field>
+        {#snippet label()}
+          <p>Question*</p>
+        {/snippet}
+        {#snippet input()}
+          <label class="input input-bordered flex w-full items-center gap-2">
+            <!-- svelte-ignore a11y_autofocus -->
+            <input
+              autofocus={!isMobile}
+              bind:value={title}
+              class="grow"
+              type="text"
+              placeholder="What would you like to ask?" />
+          </label>
+        {/snippet}
+      </Field>
+
+      <Field>
+        {#snippet label()}
+          <p>Options*</p>
+        {/snippet}
+        {#snippet input()}
+          <div class="flex flex-col gap-2">
+            {#each options as option, index (index)}
+              <div class="flex items-center gap-2">
+                <label class="input input-bordered flex w-full items-center gap-2">
+                  <input bind:value={options[index]} class="grow" type="text" placeholder={`Option ${index + 1}`} />
+                </label>
+                <Button class="btn btn-ghost btn-sm" onclick={() => removeOption(index)}>
+                  <Icon icon={MinusCircle} size={4} />
+                </Button>
+              </div>
+            {/each}
+            <Button class="btn btn-ghost btn-sm self-start" onclick={addOption}>
+              <Icon icon={PlusCircle} size={4} />
+              Add option
+            </Button>
+          </div>
+        {/snippet}
+      </Field>
+
+      <div class="flex flex-col gap-2">
+        <FieldInline>
+          {#snippet label()}
+            Poll type
+          {/snippet}
+          {#snippet input()}
+            <select class="select select-bordered w-full max-w-xs" bind:value={pollType}>
+              <option value="singlechoice">Single choice</option>
+              <option value="multiplechoice">Multiple choice</option>
+            </select>
+          {/snippet}
+        </FieldInline>
+        <FieldInline>
+          {#snippet label()}
+            Ends at
+          {/snippet}
+          {#snippet input()}
+            <input bind:value={endsAt} class="input input-bordered w-full max-w-xs" type="datetime-local" />
+          {/snippet}
+        </FieldInline>
+      </div>
+    </div>
+  </ModalBody>
+  <ModalFooter>
+    <Button class="btn btn-link" onclick={back}>
+      <Icon icon={AltArrowLeft} />
+      Go back
+    </Button>
+    <Button type="submit" class="btn btn-primary">Create Poll</Button>
+  </ModalFooter>
+</Modal>

src/app/components/PollItem.svelte

@@ -0,0 +1,32 @@
+<script lang="ts">
+  import type {TrustedEvent} from "@welshman/util"
+  import {getTagValue} from "@welshman/util"
+  import Link from "@lib/components/Link.svelte"
+  import NoteContent from "@app/components/NoteContent.svelte"
+  import CommentActions from "@app/components/CommentActions.svelte"
+  import RoomLink from "@app/components/RoomLink.svelte"
+  import ProfileLink from "@app/components/ProfileLink.svelte"
+  import {makePollPath} from "@app/util/routes"
+
+  type Props = {
+    url: string
+    event: TrustedEvent
+  }
+
+  const {url, event}: Props = $props()
+
+  const h = getTagValue("h", event.tags)
+</script>
+
+<Link class="cv col-2 card2 bg-alt w-full cursor-pointer shadow-md" href={makePollPath(url, event.id)}>
+  <NoteContent {event} {url} />
+  <div class="flex w-full flex-col items-end justify-between gap-2 sm:flex-row">
+    <span class="whitespace-nowrap py-1 text-sm opacity-75">
+      Posted by <ProfileLink pubkey={event.pubkey} {url} />
+      {#if h}
+        in <RoomLink {url} {h} />
+      {/if}
+    </span>
+    <CommentActions segment="polls" showActivity {url} {event} />
+  </div>
+</Link>

src/app/components/PollVotes.svelte

@@ -0,0 +1,126 @@
+<script lang="ts">
+  import type {TrustedEvent} from "@welshman/util"
+  import {pubkey, repository} from "@welshman/app"
+  import {deriveArray, deriveEventsById} from "@welshman/store"
+  import {PollResponse} from "nostr-tools/kinds"
+  import {formatTimestampRelative} from "@welshman/lib"
+  import Button from "@lib/components/Button.svelte"
+  import {pushToast} from "@app/util/toast"
+  import {publishPollResponse} from "@app/core/commands"
+  import {
+    getPollEndsAt,
+    getPollOptions,
+    getPollResponseSelections,
+    getPollResults,
+    getPollType,
+    isPollClosed,
+  } from "@app/util/polls"
+
+  type Props = {
+    url: string
+    event: TrustedEvent
+  }
+
+  const {url, event}: Props = $props()
+
+  const responses = deriveArray(
+    deriveEventsById({repository, filters: [{kinds: [PollResponse], "#e": [event.id]}]}),
+  )
+
+  const pollType = getPollType(event)
+  const options = getPollOptions(event)
+  const closed = isPollClosed(event)
+  const endsAt = getPollEndsAt(event)
+
+  const results = $derived.by(() => getPollResults(event, $responses))
+  const ownResponse = $derived.by(() =>
+    $responses
+      .filter(response => response.pubkey === $pubkey)
+      .sort((left, right) => right.created_at - left.created_at)[0],
+  )
+
+  const submit = async () => {
+    if (closed) {
+      return pushToast({theme: "error", message: "This poll is closed."})
+    }
+
+    const selection = pollType === "singlechoice" ? [selectedIds[0]].filter(Boolean) : selectedIds
+
+    if (selection.length === 0) {
+      return pushToast({theme: "error", message: "Please select at least one option."})
+    }
+
+    publishPollResponse({relays: [url], event, selectedIds: selection})
+  }
+
+  const setSingleChoice = (id: string) => {
+    selectedIds = [id]
+  }
+
+  const toggleMultipleChoice = (id: string) => {
+    selectedIds = selectedIds.includes(id)
+      ? selectedIds.filter(selectedId => selectedId !== id)
+      : [...selectedIds, id]
+  }
+
+  let selectedIds = $state<string[]>([])
+
+  $effect(() => {
+    if (ownResponse) {
+      selectedIds = getPollResponseSelections(ownResponse, pollType)
+    }
+  })
+</script>
+
+<div class="flex flex-col gap-3 rounded-box bg-base-200 p-4">
+  <div class="flex flex-wrap items-center justify-between gap-2">
+    <div class="text-sm opacity-75">
+      {pollType === "multiplechoice" ? "Multiple choice" : "Single choice"}
+      {#if endsAt}
+        · Ends {formatTimestampRelative(endsAt)}
+      {/if}
+      {#if closed}
+        · Closed
+      {/if}
+    </div>
+    <div class="text-sm opacity-75">{results.voters} vote{results.voters === 1 ? "" : "s"}</div>
+  </div>
+
+  <div class="flex flex-col gap-2">
+    {#each options as option (option.id)}
+      {@const maxVotes = Math.max(...results.options.map(result => result.votes), 1)}
+      {@const current = results.options.find(result => result.id === option.id)}
+      <div class="flex flex-col gap-2 rounded-box bg-base-100 p-3">
+        <div class="flex items-center justify-between gap-2">
+          <label class="flex min-w-0 flex-grow items-center gap-2">
+            {#if !closed}
+              {#if pollType === "singlechoice"}
+                <input
+                  name={event.id}
+                  type="radio"
+                  class="radio radio-primary radio-sm"
+                  checked={selectedIds[0] === option.id}
+                  onchange={() => setSingleChoice(option.id)} />
+              {:else}
+                <input
+                  type="checkbox"
+                  class="checkbox checkbox-primary checkbox-sm"
+                  checked={selectedIds.includes(option.id)}
+                  onchange={() => toggleMultipleChoice(option.id)} />
+              {/if}
+            {/if}
+            <span class="truncate">{option.label}</span>
+          </label>
+          <span class="whitespace-nowrap text-xs opacity-75">{current?.votes || 0} vote{(current?.votes || 0) === 1 ? "" : "s"}</span>
+        </div>
+        <progress class="progress progress-primary" value={current?.votes || 0} max={maxVotes}></progress>
+      </div>
+    {/each}
+  </div>
+
+  {#if !closed}
+    <div class="flex justify-end">
+      <Button class="btn btn-primary btn-sm" onclick={submit}>Cast vote</Button>
+    </div>
+  {/if}
+</div>

src/app/components/SpaceMenu.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import {derived} from "svelte/store"
   import {displayRelayUrl, EVENT_TIME, ZAP_GOAL, THREAD, CLASSIFIED} from "@welshman/util"
+  import {Poll} from "nostr-tools/kinds"
   import {deriveRelay, createSearch, pubkey} from "@welshman/app"
   import {fly} from "@lib/transition"
   import Magnifier from "@assets/icons/magnifier.svg?dataurl"
@@ -17,6 +18,7 @@
   import NotesMinimalistic from "@assets/icons/notes-minimalistic.svg?dataurl"
   import CalendarMinimalistic from "@assets/icons/calendar-minimalistic.svg?dataurl"
   import CaseMinimalistic from "@assets/icons/case-minimalistic.svg?dataurl"
+  import Revote from "@assets/icons/revote.svg?dataurl"
   import AddCircle from "@assets/icons/add-circle.svg?dataurl"
   import ChatRound from "@assets/icons/chat-round.svg?dataurl"
   import Bell from "@assets/icons/bell.svg?dataurl"
@@ -69,6 +71,7 @@
   const threadsPath = makeSpacePath(url, "threads")
   const classifiedsPath = makeSpacePath(url, "classifieds")
   const calendarPath = makeSpacePath(url, "calendar")
+  const pollsPath = makeSpacePath(url, "polls")
   const userRooms = deriveUserRooms(url)
   const otherRooms = deriveOtherRooms(url)
   const otherVoiceRooms = deriveOtherVoiceRooms(url)
@@ -257,6 +260,11 @@
           <Icon icon={CalendarMinimalistic} /> Calendar
         </SecondaryNavItem>
       {/if}
+      {#if $spaceKinds.has(Poll)}
+        <SecondaryNavItem href={pollsPath}>
+          <Icon icon={Revote} /> Polls
+        </SecondaryNavItem>
+      {/if}
       {#if hasNip29($relay)}
         {#if $userRooms.length > 0}
           <div class="h-2 flex-shrink-0"></div>

src/app/core/commands.ts

@@ -18,6 +18,7 @@ import {
 import {Nip01Signer} from "@welshman/signer"
 import type {UploadTask} from "@welshman/editor"
 import type {TrustedEvent, EventContent, Profile, PublishedRoomMeta} from "@welshman/util"
+import {PollResponse} from "nostr-tools/kinds"
 import {
   DELETE,
   REPORT,
@@ -351,6 +352,22 @@ export const publishReaction = ({relays, ...params}: ReactionParams & {relays: s
   publishThunk({event: makeReaction({url: relays[0], ...params}), relays})
 }
 
+// Polls
+
+export type PollResponseParams = {
+  event: TrustedEvent
+  selectedIds: string[]
+}
+
+export const makePollResponse = ({event, selectedIds}: PollResponseParams) =>
+  makeEvent(PollResponse, {
+    content: "",
+    tags: [["e", event.id], ...selectedIds.map(selectedId => ["response", selectedId])],
+  })
+
+export const publishPollResponse = ({relays, ...params}: PollResponseParams & {relays: string[]}) =>
+  publishThunk({event: makePollResponse(params), relays})
+
 // Comments
 
 export type CommentParams = {

src/app/core/state.ts

@@ -3,6 +3,7 @@ import {context as pomadeContext} from "@pomade/core"
 import {Capacitor} from "@capacitor/core"
 import {derived, readable, writable} from "svelte/store"
 import * as nip19 from "nostr-tools/nip19"
+import {Poll} from "nostr-tools/kinds"
 import {
   on,
   gt,
@@ -325,7 +326,7 @@ if (ENABLE_ZAPS) {
   REACTION_KINDS.push(ZAP_RESPONSE)
 }
 
-export const CONTENT_KINDS = [ZAP_GOAL, EVENT_TIME, THREAD, CLASSIFIED]
+export const CONTENT_KINDS = [ZAP_GOAL, EVENT_TIME, THREAD, CLASSIFIED, Poll]
 
 export const MESSAGE_KINDS = [...CONTENT_KINDS, MESSAGE]
 

src/app/core/sync.ts

@@ -2,6 +2,7 @@ import {page} from "$app/stores"
 import type {Unsubscriber} from "svelte/store"
 import {derived, get} from "svelte/store"
 import {last, call, ifLet, assoc, chunk, sleep, identity, WEEK, ago} from "@welshman/lib"
+import {PollResponse} from "nostr-tools/kinds"
 import {
   getListTags,
   getRelayTagValues,
@@ -281,6 +282,7 @@ const syncSpace = (url: string, rooms: string[]) => {
         filters: [
           {kinds: MESSAGE_KINDS, since, "#h": [room]},
           makeCommentFilter(CONTENT_KINDS, {since, "#h": [room]}),
+          {kinds: [PollResponse], since},
         ],
       })
     }
@@ -303,6 +305,7 @@ const syncSpace = (url: string, rooms: string[]) => {
       {kinds: roomMemberKinds},
       {kinds: MESSAGE_KINDS, since},
       makeCommentFilter(CONTENT_KINDS, {since}),
+      {kinds: [PollResponse], since},
     ],
     onEvent: event => {
       if (event.kind === ROOM_META) {
@@ -314,7 +317,7 @@ const syncSpace = (url: string, rooms: string[]) => {
   listen({
     url,
     signal: controller.signal,
-    filters: [{kinds: REACTION_KINDS}],
+    filters: [{kinds: REACTION_KINDS}, {kinds: [PollResponse]}],
   })
 
   return () => controller.abort()

src/app/util/polls.ts

@@ -0,0 +1,80 @@
+import {now, uniq} from "@welshman/lib"
+import type {TrustedEvent} from "@welshman/util"
+import {getTagValue, getTags} from "@welshman/util"
+
+export type PollType = "singlechoice" | "multiplechoice"
+
+export type PollOption = {
+  id: string
+  label: string
+  votes: number
+}
+
+const isDefined = <T>(value: T | undefined): value is T => value !== undefined
+
+export const getPollType = (event: TrustedEvent): PollType =>
+  getTagValue("polltype", event.tags) === "multiplechoice" ? "multiplechoice" : "singlechoice"
+
+export const getPollOptions = (event: TrustedEvent) =>
+  getTags("option", event.tags)
+    .map(tag => {
+      const [, id, label = id] = tag
+
+      if (!id) return undefined
+
+      return {id, label}
+    })
+    .filter(isDefined)
+
+export const getPollEndsAt = (event: TrustedEvent) => {
+  const endsAt = getTagValue("endsAt", event.tags) || getTagValue("endsat", event.tags)
+
+  if (!endsAt) return undefined
+
+  const timestamp = parseInt(endsAt)
+
+  return Number.isNaN(timestamp) ? undefined : timestamp
+}
+
+export const isPollClosed = (event: TrustedEvent) => {
+  const endsAt = getPollEndsAt(event)
+
+  return typeof endsAt === "number" ? endsAt <= now() : false
+}
+
+export const getPollResponseSelections = (event: TrustedEvent, pollType = getPollType(event)) => {
+  const selections = getTags("response", event.tags)
+    .map(tag => tag[1])
+    .filter(isDefined)
+
+  return pollType === "singlechoice" ? selections.slice(0, 1) : uniq(selections)
+}
+
+export const getPollResults = (event: TrustedEvent, responses: TrustedEvent[]) => {
+  const options = getPollOptions(event).map(option => ({...option, votes: 0}))
+  const counts = new Map(options.map(option => [option.id, option]))
+  const latestByPubkey = new Map<string, TrustedEvent>()
+
+  for (const response of responses) {
+    const current = latestByPubkey.get(response.pubkey)
+
+    if (!current || response.created_at > current.created_at) {
+      latestByPubkey.set(response.pubkey, response)
+    }
+  }
+
+  for (const response of latestByPubkey.values()) {
+    for (const optionId of getPollResponseSelections(response, getPollType(event))) {
+      const option = counts.get(optionId)
+
+      if (option) {
+        option.votes += 1
+      }
+    }
+  }
+
+  return {
+    options,
+    voters: latestByPubkey.size,
+  }
+}

src/app/util/routes.ts

@@ -6,6 +6,7 @@ import {page} from "$app/stores"
 import {nthEq} from "@welshman/lib"
 import type {TrustedEvent} from "@welshman/util"
 import {getAddress} from "@welshman/util"
+import {Poll} from "nostr-tools/kinds"
 import {tracker, userMessagingRelayList} from "@welshman/app"
 import {identity} from "@welshman/lib"
 import {
@@ -90,6 +91,8 @@ export const makeClassifiedPath = (url: string, address?: string) =>
 export const makeCalendarPath = (url: string, address?: string) =>
   makeSpacePath(url, "calendar", address)
 
+export const makePollPath = (url: string, id?: string) => makeSpacePath(url, "polls", id)
+
 export const scrollToEvent = (id: string) => {
   const element = document.querySelector(`[data-event="${id}"]`) as any
 
@@ -146,6 +149,10 @@ export const getEventPath = (event: TrustedEvent, urls: string[]) => {
       return makeCalendarPath(url, getAddress(event))
     }
 
+    if (event.kind === Poll) {
+      return makePollPath(url, event.id)
+    }
+
     if (event.kind === MESSAGE) {
       return makeMessagePath(url, event)
     }
@@ -192,5 +199,7 @@ export const getRoomItemPath = (url: string, event: TrustedEvent) => {
       return makeGoalPath(url, event.id)
     case EVENT_TIME:
       return makeCalendarPath(url, getAddress(event))
+    case Poll:
+      return makePollPath(url, event.id)
   }
 }

src/app/util/title.ts

@@ -17,6 +17,7 @@ const staticTitles = new Map<string, string>([
   ["/spaces/[relay]/classifieds", "Classifieds"],
   ["/spaces/[relay]/calendar", "Calendar"],
   ["/spaces/[relay]/goals", "Goals"],
+  ["/spaces/[relay]/polls", "Polls"],
   ["/chat", "Messages"],
   ["/join", "Join Space"],
   ["/people", "Find People"],
@@ -35,6 +36,7 @@ const eventRoutes = new Set([
   "/spaces/[relay]/goals/[id]",
   "/spaces/[relay]/calendar/[address]",
   "/spaces/[relay]/classifieds/[address]",
+  "/spaces/[relay]/polls/[id]",
 ])
 
 type RouteParams = Record<string, string | undefined>

src/routes/spaces/[relay]/polls/+page.svelte

@@ -0,0 +1,95 @@
+<script lang="ts">
+  import {onMount} from "svelte"
+  import {readable} from "svelte/store"
+  import type {Readable} from "svelte/store"
+  import {page} from "$app/stores"
+  import {sortBy, partition, spec, pushToMapKey, max} from "@welshman/lib"
+  import type {TrustedEvent} from "@welshman/util"
+  import {COMMENT, getTagValue} from "@welshman/util"
+  import {fly} from "@lib/transition"
+  import PollIcon from "@assets/icons/revote.svg?dataurl"
+  import Add from "@assets/icons/add.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import PageContent from "@lib/components/PageContent.svelte"
+  import Spinner from "@lib/components/Spinner.svelte"
+  import SpaceBar from "@app/components/SpaceBar.svelte"
+  import PollItem from "@app/components/PollItem.svelte"
+  import PollCreate from "@app/components/PollCreate.svelte"
+  import {Poll} from "nostr-tools/kinds"
+  import {decodeRelay, makeCommentFilter} from "@app/core/state"
+  import {makeFeed} from "@app/core/requests"
+  import {pushModal} from "@app/util/modal"
+
+  const url = decodeRelay($page.params.relay!)
+
+  let loading = $state(true)
+  let element: HTMLElement | undefined = $state()
+  let events: Readable<TrustedEvent[]> = $state(readable([]))
+
+  const createPoll = () => pushModal(PollCreate, {url})
+
+  const items = $derived.by(() => {
+    const scores = new Map<string, number[]>()
+    const [polls, comments] = partition(spec({kind: Poll}), $events)
+
+    for (const comment of comments) {
+      const id = getTagValue("E", comment.tags)
+
+      if (id) {
+        pushToMapKey(scores, id, comment.created_at)
+      }
+    }
+
+    return sortBy(e => -max([...(scores.get(e.id) || []), e.created_at]), polls)
+  })
+
+  onMount(() => {
+    const feed = makeFeed({
+      url,
+      element: element!,
+      filters: [{kinds: [Poll]}, makeCommentFilter([Poll])],
+      onBackwardExhausted: () => {
+        loading = false
+      },
+    })
+
+    events = feed.events
+
+    return () => {
+      feed.cleanup()
+    }
+  })
+</script>
+
+<SpaceBar>
+  {#snippet title()}
+    <Icon icon={PollIcon} />
+    <strong>Polls</strong>
+  {/snippet}
+  {#snippet action()}
+    <Button class="btn btn-primary btn-sm" onclick={createPoll}>
+      <Icon icon={Add} />
+      Create
+    </Button>
+  {/snippet}
+</SpaceBar>
+
+<PageContent bind:element class="flex flex-col gap-2 p-2 pt-4">
+  {#each items as event (event.id)}
+    <div in:fly>
+      <PollItem {url} event={$state.snapshot(event)} />
+    </div>
+  {/each}
+  <p class="flex h-10 items-center justify-center py-20">
+    <Spinner {loading}>
+      {#if loading}
+        Looking for polls...
+      {:else if items.length === 0}
+        No polls found.
+      {:else}
+        That's all!
+      {/if}
+    </Spinner>
+  </p>
+</PageContent>

src/routes/spaces/[relay]/polls/[id]/+page.svelte

@@ -0,0 +1,105 @@
+<script lang="ts">
+  import {onMount} from "svelte"
+  import {page} from "$app/stores"
+  import {sleep} from "@welshman/lib"
+  import type {MakeNonOptional} from "@welshman/lib"
+  import {COMMENT} from "@welshman/util"
+  import {repository} from "@welshman/app"
+  import {request} from "@welshman/net"
+  import {deriveEventsById, deriveEventsAsc} from "@welshman/store"
+  import SortVertical from "@assets/icons/sort-vertical.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import PageContent from "@lib/components/PageContent.svelte"
+  import Spinner from "@lib/components/Spinner.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import SpaceBar from "@app/components/SpaceBar.svelte"
+  import NoteCard from "@app/components/NoteCard.svelte"
+  import NoteContent from "@app/components/NoteContent.svelte"
+  import PollVotes from "@app/components/PollVotes.svelte"
+  import CommentActions from "@app/components/CommentActions.svelte"
+  import EventReply from "@app/components/EventReply.svelte"
+  import {deriveEvent, decodeRelay} from "@app/core/state"
+  import {Poll, PollResponse} from "nostr-tools/kinds"
+
+  const {relay, id} = $page.params as MakeNonOptional<typeof $page.params>
+  const url = decodeRelay(relay)
+  const event = deriveEvent(id, [url])
+  const filters = [{kinds: [COMMENT], "#E": [id]}]
+  const comments = deriveEventsAsc(deriveEventsById({repository, filters}))
+
+  const back = () => history.back()
+
+  const openReply = () => {
+    showReply = true
+  }
+
+  const closeReply = () => {
+    showReply = false
+  }
+
+  const expand = () => {
+    showAll = true
+  }
+
+  let showAll = $state(false)
+  let showReply = $state(false)
+
+  onMount(() => {
+    const controller = new AbortController()
+
+    request({relays: [url], filters: [{kinds: [Poll], ids: [id]}, {kinds: [PollResponse], "#e": [id]}, ...filters], signal: controller.signal})
+
+    return () => {
+      controller.abort()
+    }
+  })
+</script>
+
+<SpaceBar {back}>
+  {#snippet title()}
+    <h1 class="text-xl">{$event?.content || "Poll"}</h1>
+  {/snippet}
+</SpaceBar>
+
+<PageContent class="flex flex-col gap-3 p-2 pt-4">
+  {#if $event}
+    <div class="flex flex-col gap-3">
+      <NoteCard event={$event} {url} class="card2 bg-alt z-feature w-full">
+        <div class="col-3 ml-12 flex flex-col gap-3">
+          <NoteContent showEntire event={$event} {url} />
+          <PollVotes {url} event={$event} />
+          <CommentActions segment="polls" showActivity {url} event={$event} />
+        </div>
+      </NoteCard>
+      {#if !showAll && $comments.length > 4}
+        <div class="flex justify-center">
+          <Button class="btn btn-link" onclick={expand}>
+            <Icon icon={SortVertical} />
+            Show all {$comments.length} comments
+          </Button>
+        </div>
+      {/if}
+      {#each $comments.slice(0, showAll ? undefined : 4) as reply (reply.id)}
+        <NoteCard event={reply} {url} class="card2 bg-alt z-feature w-full">
+          <div class="col-3 ml-12">
+            <NoteContent showEntire event={reply} {url} />
+            <CommentActions segment="polls" event={reply} {url} />
+          </div>
+        </NoteCard>
+      {/each}
+    </div>
+    {#if showReply}
+      <EventReply {url} event={$event} onClose={closeReply} onSubmit={closeReply} />
+    {:else}
+      <div class="flex justify-end p-2">
+        <Button class="btn btn-primary" onclick={openReply}>Comment on this poll</Button>
+      </div>
+    {/if}
+  {:else}
+    {#await sleep(5000)}
+      <Spinner loading>Loading poll...</Spinner>
+    {:then}
+      <p>Failed to load poll.</p>
+    {/await}
+  {/if}
+</PageContent>

src/routes/spaces/[relay]/recent/+page.svelte

@@ -26,8 +26,10 @@
   import ClassifiedItem from "@app/components/ClassifiedItem.svelte"
   import GoalItem from "@app/components/GoalItem.svelte"
   import CalendarEventItem from "@app/components/CalendarEventItem.svelte"
+  import PollItem from "@app/components/PollItem.svelte"
   import RecentConversation from "@app/components/RecentConversation.svelte"
   import {decodeRelay, deriveEventsForUrl, CONTENT_KINDS} from "@app/core/state"
+  import {Poll} from "nostr-tools/kinds"
 
   const url = decodeRelay($page.params.relay!)
   const since = ago(3, MONTH)
@@ -126,6 +128,8 @@
           <GoalItem {url} {event} />
         {:else if event.kind === EVENT_TIME}
           <CalendarEventItem {url} {event} />
+        {:else if event.kind === Poll}
+          <PollItem {url} {event} />
         {:else}
           <NoteItem {url} {event} />
         {/if}