feat(line): add adapter-line

adapters/line/package.json

@@ -0,0 +1,33 @@
+{
+  "name": "@satorijs/adapter-line",
+  "description": "Line Adapter for Satorijs",
+  "version": "1.0.0",
+  "main": "lib/index.js",
+  "typings": "lib/index.d.ts",
+  "files": [
+    "lib"
+  ],
+  "author": "LittleC <[email protected]>",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/satorijs/satori.git",
+    "directory": "adapters/line"
+  },
+  "bugs": {
+    "url": "https://github.com/satorijs/satori/issues"
+  },
+  "homepage": "https://koishi.chat/plugins/adapter/line.html",
+  "keywords": [
+    "bot",
+    "line",
+    "adapter",
+    "chatbot",
+    "satori"
+  ],
+  "peerDependencies": {
+    "@satorijs/satori": "^2.4.0"
+  },
+  "dependencies": {},
+  "devDependencies": {}
+}

adapters/line/src/bot.ts

@@ -0,0 +1,108 @@
+import { Bot, Context, Quester, Schema, Universal } from '@satorijs/satori'
+import { HttpServer } from './http'
+import { Internal } from './types'
+import { LineMessageEncoder } from './message'
+
+export class LineBot extends Bot<LineBot.Config> {
+  static MessageEncoder = LineMessageEncoder
+  public http: Quester
+  public contentHttp: Quester
+  public internal: Internal
+  constructor(ctx: Context, config: LineBot.Config) {
+    super(ctx, config)
+    ctx.plugin(HttpServer, this)
+    this.http = ctx.http.extend({
+      ...config.api,
+      headers: {
+        Authorization: `Bearer ${config.token}`,
+      },
+    })
+    this.contentHttp = ctx.http.extend({
+      ...config.content,
+      headers: {
+        Authorization: `Bearer ${config.token}`,
+      },
+    })
+    this.internal = new Internal(this.http)
+  }
+
+  // https://developers.line.biz/en/reference/messaging-api/#get-profile
+  async getSelf(): Promise<Universal.User> {
+    const { userId, displayName, pictureUrl } = await this.internal.getBotInfo()
+    return {
+      userId,
+      nickname: displayName,
+      avatar: pictureUrl,
+    }
+  }
+
+  async getFriendList(): Promise<Universal.User[]> {
+    let userIds: string[] = []
+    let start: string
+    do {
+      const res = await this.internal.getFollowers(start, 1000)
+      userIds = userIds.concat(res.userIds)
+      start = res.next
+    } while (start)
+
+    return userIds.map(v => ({ userId: v }))
+  }
+
+  async getGuild(guildId: string): Promise<Universal.Guild> {
+    const res = await this.internal.getGroupSummary(guildId)
+    return {
+      guildId: res.groupId,
+      guildName: res.groupName,
+    }
+  }
+
+  async getGuildMemberList(guildId: string): Promise<Universal.GuildMember[]> {
+    let userIds: string[] = []
+    let start: string
+    do {
+      const res = await this.internal.getGroupMembersIds(guildId, start)
+      userIds = userIds.concat(res.memberIds)
+      start = res.next
+    } while (start)
+
+    return userIds.map(v => ({ userId: v }))
+  }
+
+  async getGuildMember(guildId: string, userId: string): Promise<Universal.GuildMember> {
+    const res = await this.internal.getGroupMemberProfile(guildId, userId)
+    return ({
+      userId: res.userId,
+      nickname: res.displayName,
+      avatar: res.pictureUrl,
+    })
+  }
+}
+
+export namespace LineBot {
+  export interface Config extends Bot.Config {
+    privateKey: string
+    secret: string
+    kid?: string
+    channelId: string
+    token: string
+    api: Quester.Config
+    content: Quester.Config
+  }
+  export const Config: Schema<Config> = Schema.intersect([
+    Schema.object({
+      api: Quester.createConfig('https://api.line.me/'),
+    }),
+    Schema.object({
+      content: Quester.createConfig('https://api-data.line.me/'),
+    }),
+    Schema.object({
+      privateKey: Schema.string().role('secret'),
+      secret: Schema.string().role('secret'),
+      kid: Schema.string(),
+      channelId: Schema.string(),
+      token: Schema.string().required(),
+    }),
+  ] as const)
+}
+
+LineBot.prototype.platform = 'line'

adapters/line/src/http.ts

@@ -0,0 +1,34 @@
+import { Adapter, Context, Logger } from '@satorijs/satori'
+import { LineBot } from './bot'
+import crypto from 'node:crypto'
+import { WebhookRequestBody } from './types'
+import { adaptSessions } from './utils'
+
+export class HttpServer extends Adapter.Server<LineBot> {
+  logger = new Logger('line')
+  constructor(ctx: Context, bot: LineBot) {
+    super()
+  }
+
+  async start(bot: LineBot) {
+    const { userId } = await bot.internal.getBotInfo()
+    bot.selfId = userId
+    bot.online()
+    bot.ctx.router.post('/line', async (ctx) => {
+      const sign = ctx.headers['x-line-signature']?.toString()
+      const hash = crypto.createHmac('SHA256', bot.config.secret).update(ctx.request.rawBody || '').digest('base64')
+      if (hash !== sign) {
+        return ctx.status = 403
+      }
+      const parsed = ctx.request.body as WebhookRequestBody
+      this.logger.debug(require('util').inspect(parsed, false, null, true))
+      for (const event of parsed.events) {
+        const sessions = await adaptSessions(bot, event)
+        if (sessions.length) sessions.forEach(bot.dispatch.bind(bot))
+        this.logger.debug(require('util').inspect(sessions, false, null, true))
+      }
+      ctx.status = 200
+      ctx.body = 'ok'
+    })
+  }
+}

adapters/line/src/index.ts

@@ -0,0 +1,9 @@
+import { LineBot } from './bot'
+
+export * from './bot'
+export * from './utils'
+export * from './types'
+export * from './http'
+export * from './message'
+
+export default LineBot

adapters/line/src/message.ts

@@ -0,0 +1,107 @@
+import { h, MessageEncoder } from '@satorijs/satori'
+import { LineBot } from './bot'
+import { Message, Sender, TextMessage } from './types'
+
+export const escape = (val: string) =>
+  val
+    .replace(/(?<!\u200b)[\*_~`]/g, '\u200B$&')
+
+export const unescape = (val: string) =>
+  val
+    .replace(/\u200b([\*_~`])/g, '$1')
+
+export class LineMessageEncoder extends MessageEncoder<LineBot> {
+  buffer = ''
+  blocks: Message[] = []
+  block: Message = null
+  sender: Sender = {}
+  emojis: TextMessage['emojis'] = []
+  async flush(): Promise<void> {
+    await this.insertBlock()
+    // https://developers.line.biz/en/reference/messaging-api/#send-push-message
+    for (let i = 0; i < this.blocks.length; i += 5) {
+      await this.bot.http.post('/v2/bot/message/push', {
+        to: this.channelId,
+        messages: this.blocks.slice(i, i + 5),
+      }, {
+        headers: {
+          Authorization: `Bearer ${this.bot.config.token}`,
+        },
+      })
+    }
+  }
+
+  async insertBlock() {
+    if (this.buffer.length) {
+      this.blocks.push({
+        ...{
+          type: 'text',
+          text: escape(this.buffer),
+          sender: { ...this.sender },
+        },
+        ...this.emojis.length ? { emojis: this.emojis } : {},
+      })
+      this.buffer = ''
+      this.emojis = []
+    }
+  }
+
+  async visit(element: h) {
+    const { type, attrs, children } = element
+
+    if (type === 'text') {
+      this.buffer += attrs.content
+    } else if (type === 'image' && attrs.url) {
+      await this.insertBlock()
+      this.blocks.push({
+        type: 'image',
+        originalContentUrl: attrs.url,
+        previewImageUrl: attrs.url,
+      })
+    } else if (type === 'video' && attrs.url) {
+      await this.insertBlock()
+      this.blocks.push({
+        type: 'video',
+        originalContentUrl: attrs.url,
+        previewImageUrl: attrs.url,
+      })
+    } else if (type === 'audio' && attrs.url) {
+      await this.insertBlock()
+      this.blocks.push({
+        type: 'audio',
+        originalContentUrl: attrs.url,
+        duration: 1145,
+      })
+    } else if (type === 'face' && attrs.id) {
+      if (attrs.id.startsWith('s')) {
+        // https://developers.line.biz/en/reference/messaging-api/#sticker-message
+        await this.insertBlock()
+        this.blocks.push({
+          type: 'sticker',
+          packageId: attrs.id.split(':')[1],
+          stickerId: attrs.id.split(':')[2],
+        })
+      } else {
+        // https://developers.line.biz/en/reference/messaging-api/#text-message
+        this.emojis.push({
+          index: this.buffer.length,
+          productId: attrs.id.split(':')[1],
+          emojiId: attrs.id.split(':')[2],
+        })
+        this.buffer += '$'
+      }
+    } else if (type === 'author') {
+      this.sender.name = attrs.nickname
+      this.sender.iconUrl = attrs.avatar
+    } else if (type === 'message') {
+      // let childAuthor = h.select(children, 'author')
+      const sender = { ...this.sender }
+      await this.insertBlock()
+      await this.render(children)
+      await this.insertBlock()
+      if (this.sender.iconUrl || this.sender.name) {
+        this.sender = { ...sender }
+      }
+    }
+  }
+}