Add poll functionality with voting support

.claude/settings.local.json

@@ -7,7 +7,8 @@
       "Bash(awk:*)",
       "Bash(sed:*)",
       "Bash(deno task:*)",
-      "Bash(deno test:*)"
+      "Bash(deno test:*)",
+      "Bash(gh issue view:*)"
     ],
     "deny": []
   }

CHANGES.md

@@ -9,6 +9,16 @@ To be released.
  -  BotKit now supports Node.js alongside of Deno.  The minimum required
     version of Node.js is 22.0.0.
 
+ -  BotKit now supports publishing polls.  [[#7], [#8]]
+
+     -  Added `Poll` interface.
+     -  Added `Vote` interface.
+     -  Added an overload of the `Session.publish()` method that accepts
+        `SessionPublishOptionsWithQuestion` as the second argument.
+     -  Added `SessionPublishOptionsWithQuestion` interface.
+     -  Added `Bot.onVote` event.
+     -  Added `VoteEventHandler` type.
+
  -  Added `@fedify/botkit/repository` module that provides repository
     implementations for BotKit.
 
@@ -22,7 +32,10 @@ To be released.
      -  Added `Create` class.
      -  Added `MemoryCachedRepository` class.
 
- -  Upgraded Fedify to 1.6.1.
+ -  Upgraded Fedify to 1.7.1.
+
+[#7]: https://github.com/fedify-dev/botkit/issues/7
+[#8]: https://github.com/fedify-dev/botkit/pull/8
 
 
 Version 0.2.0

deno.json

@@ -13,13 +13,14 @@
     "./events": "./src/events.ts",
     "./follow": "./src/follow.ts",
     "./message": "./src/message.ts",
+    "./poll": "./src/poll.ts",
     "./reaction": "./src/reaction.ts",
     "./repository": "./src/repository.ts",
     "./session": "./src/session.ts",
     "./text": "./src/text.ts"
   },
   "imports": {
-    "@fedify/fedify": "jsr:@fedify/fedify@^1.6.1",
+    "@fedify/fedify": "jsr:@fedify/fedify@^1.7.1",
     "@fedify/markdown-it-hashtag": "jsr:@fedify/markdown-it-hashtag@^0.3.0",
     "@fedify/markdown-it-mention": "jsr:@fedify/markdown-it-mention@^0.3.0",
     "@logtape/logtape": "jsr:@logtape/logtape@^1.0.0",
@@ -54,7 +55,11 @@
     "test": "deno test --allow-env=NODE_V8_COVERAGE,JEST_WORKER_ID --allow-net=hollo.social --parallel",
     "test:node": "pnpm install && pnpm test",
     "test-all": {
-      "dependencies": ["check", "test", "test:node"]
+      "dependencies": [
+        "check",
+        "test",
+        "test:node"
+      ]
     },
     "coverage": "deno task test --coverage --clean && deno coverage --html",
     "hooks:install": "deno run --allow-read=deno.json,.git/hooks/ --allow-write=.git/hooks/ jsr:@hongminhee/deno-task-hooks",

docs/concepts/events.md

@@ -444,3 +444,81 @@ bot.onUnreact = async (session, reaction) => {
   }
 };
 ~~~~
+
+
+Vote
+----
+
+*This API is available since BotKit 0.3.0.*
+
+The `~Bot.onVote` event handler is called when someone votes on a poll created
+by your bot.  It receives a `Vote` object, which represents the vote activity,
+as the second argument.
+
+The following is an example of a vote event handler that sends a direct message
+when someone votes on your bot's poll:
+
+~~~~ typescript twoslash
+import { type Bot, text } from "@fedify/botkit";
+const bot = {} as unknown as Bot<void>;
+// ---cut-before---
+bot.onVote = async (session, vote) => {
+  await session.publish(
+    text`Thanks for voting "${vote.option}" on my poll, ${vote.actor}!`,
+    { visibility: "direct" },
+  );
+};
+~~~~
+
+The `Vote` object contains the following properties:
+
+`~Vote.actor`
+:   The actor who voted.
+
+`~Vote.option`
+:   The option that was voted for (as a string).
+
+`~Vote.poll`
+:   Information about the poll including whether it allows `~Poll.multiple`
+    choices, all available `~Poll.options`, and the `~Poll.endTime`.
+
+`~Vote.message`
+:   The poll message that was voted on.
+
+Note that for multiple choice polls, each option selection creates a separate
+`Vote` object, even if the same user selects multiple options.
+
+> [!TIP]
+> You can check if a poll allows multiple selections by accessing the
+> `vote.poll.multiple` property:
+>
+> ~~~~ typescript twoslash
+> import { type Bot, text } from "@fedify/botkit";
+> const bot = {} as unknown as Bot<void>;
+> // ---cut-before---
+> bot.onVote = async (session, vote) => {
+>   if (vote.poll.multiple) {
+>     await vote.message.reply(
+>       text`${vote.actor} selected "${vote.option}" in the multiple choice poll!`
+>     );
+>   } else {
+>     await vote.message.reply(
+>       text`${vote.actor} voted for "${vote.option}"!`
+>     );
+>   }
+> };
+> ~~~~
+
+> [!NOTE]
+> The `~Bot.onVote` event handler is only called for votes on polls created by
+> your bot. Votes on polls created by others will not trigger this event.
+
+> [!NOTE]
+> The bot author cannot vote on their own polls—such votes  are automatically
+> ignored and will not trigger the `~Bot.onVote` event handler.
+
+> [!NOTE]
+> On a poll with multiple options, each selection creates a separate `Vote`
+> object, even if the same user selects multiple options. This means that if
+> a user selects multiple options in a multiple-choice poll, the `~Bot.onVote`
+> event handler will be called multiple times, once for each selected option.

docs/concepts/message.md

@@ -257,6 +257,70 @@ bot.onMention = async (session, message) => {
 > while others like Mastodon might implement quotes differently or not support
 > them at all.
 
+### Polls
+
+*This API is available since BotKit 0.3.0.*
+
+You can attach a poll to a message by providing
+the `~SessionPublishOptionsWithQuestion.poll` option along with
+the message class `Question`.  The poll option allows users to vote on
+different choices.  For example:
+
+~~~~ typescript twoslash
+import { type Session, Question, text } from "@fedify/botkit";
+import { Temporal } from "@js-temporal/polyfill";
+const session = {} as unknown as Session<void>;
+// ---cut-before---
+await session.publish(text`What's your favorite color?`, {
+  class: Question,
+  poll: {
+    multiple: false,  // Single choice poll
+    options: ["Red", "Blue", "Green"],
+    endTime: Temporal.Now.instant().add({ hours: 24 }),
+  },
+});
+~~~~
+
+For multiple choice polls, set `~Poll.multiple` to `true`:
+
+~~~~ typescript twoslash
+import { type Session, Question, text } from "@fedify/botkit";
+import { Temporal } from "@js-temporal/polyfill";
+const session = {} as unknown as Session<void>;
+// ---cut-before---
+await session.publish(text`Which programming languages do you know?`, {
+  class: Question,
+  poll: {
+    multiple: true,  // Multiple choice poll
+    options: ["JavaScript", "TypeScript", "Python", "Rust"],
+    endTime: Temporal.Now.instant().add({ hours: 24 * 7 }),
+  },
+});
+~~~~
+
+The poll configuration includes:
+
+`~Poll.multiple`
+:   Whether the poll allows multiple selections (`true` for multiple
+    choice, `false` for single choice).
+
+`~Poll.options`
+:   An array of strings representing the poll options. Each option
+    must be unique and non-empty.
+
+`~Poll.endTime`
+:   A [`Temporal.Instant`] representing when the poll closes.
+
+> [!NOTE]
+> Polls are represented as ActivityPub `Question` objects. Not all ActivityPub
+> implementations support polls, and the behavior may vary between different
+> platforms.
+
+> [!TIP]
+> When someone votes on your bot's poll, the `~Bot.onVote` event handler will
+> be called. See the [*Vote* section](./events.md#vote) in the *Events* concept
+> document for more information.
+
 
 Extracting information from a message
 -------------------------------------

docs/examples.md

@@ -25,6 +25,59 @@ BotKit.  The bot performs the following actions:
 :::
 
 
+One-time passcode authentication bot
+------------------------------------
+
+This example demonstrates how to implement an emoji-based one-time passcode
+authentication system using BotKit's poll functionality.  The bot provides
+a simple two-factor authentication mechanism through the fediverse.
+
+The authentication flow works as follows:
+
+1. *Initial setup*: The user visits the web interface and enters their fediverse
+   handle (e.g., `@username@server.com`).
+
+2. *Challenge generation*: The system generates a random set of emojis and sends
+   a direct message containing a poll with all available emoji options to
+  the user's fediverse account.
+
+3. *Web interface display*: The correct emoji sequence is displayed on the
+   web page.
+
+4. *User response*: The user votes for the matching emojis in the poll they
+   received via direct message.
+
+5. *Verification*: The system verifies that the user selected exactly
+   the same emojis shown on the web page.
+
+6. *Authentication result*: If the emoji selection matches, authentication is
+   successful.
+
+Key features:
+
+ -  Uses BotKit's [poll functionality](./concepts/message.md#polls) for secure
+    voting
+ -  Implements a 15-minute expiration for both the challenge and authentication
+    attempts
+ -  Provides a clean web interface using [Hono] framework and [Pico CSS]
+ -  Stores temporary data using [Deno KV] for session management
+ -  Supports both direct message delivery and real-time vote tracking
+
+This example showcases how to combine ActivityPub's social features with web
+authentication, demonstrating BotKit's capability to bridge fediverse
+interactions with traditional web applications.
+
+::: code-group
+
+<<< @/../examples/otp.tsx [otp.tsx]
+
+:::
+
+[Hono]: https://hono.dev/
+[Pico CSS]: https://picocss.com/
+[Deno KV]: https://deno.com/kv
+
+
 FediChatBot
 -----------
 

docs/package.json

@@ -4,6 +4,7 @@
     "@fedify/fedify": "catalog:",
     "@fedify/postgres": "^0.3.0",
     "@fedify/redis": "^0.4.0",
+    "@js-temporal/polyfill": "^0.5.1",
     "@shikijs/vitepress-twoslash": "^3.7.0",
     "@types/deno": "^2.3.0",
     "@types/node": "^24.0.3",