feat: add realtime with socket.io

.eslintrc.json

@@ -35,6 +35,7 @@
         }
       }
     ],
-    "@typescript-eslint/no-namespace": "off"
+    "@typescript-eslint/no-namespace": "off",
+    "@next/next/no-img-element": "off"
   }
 }

components/Application/Messages/Message/MessageFile/MessageFile.tsx

@@ -1,5 +1,4 @@
 import { useState, useEffect } from 'react'
-import Image from 'next/image'
 import axios from 'axios'
 import prettyBytes from 'pretty-bytes'
 import { DownloadIcon } from '@heroicons/react/solid'
@@ -48,13 +47,11 @@ export const MessageFile: React.FC<MessageContentProps> = (props) => {
   if (message.mimetype.startsWith('image/')) {
     return (
       <a href={file.url} target='_blank' rel='noreferrer'>
-        <Image
+        <img
           data-cy={`message-file-image-${message.id}`}
-          className='max-w-xs max-h-xs'
+          className='sm:max-w-xs max-h-80'
           src={file.url}
           alt={message.value}
-          width={320}
-          height={320}
         />
       </a>
     )
@@ -69,7 +66,7 @@ export const MessageFile: React.FC<MessageContentProps> = (props) => {
   if (message.mimetype.startsWith('video/')) {
     return (
       <video
-        className='max-w-xs max-h-xs'
+        className='max-w-xs max-h-80'
         controls
         data-cy={`message-file-video-${message.id}`}
       >

components/Application/Messages/Messages.tsx

@@ -29,7 +29,7 @@ export const Messages: React.FC = () => {
     >
       <InfiniteScroll
         scrollableTarget='messages'
-        className='messages-list'
+        className='messages-list !overflow-x-hidden'
         dataLength={messages.length}
         next={nextPage}
         inverse

components/Application/SendMessage/SendMessage.stories.tsx

@@ -1,6 +1,8 @@
 import { Meta, Story } from '@storybook/react'
 
-import { SendMessage as Component } from './SendMessage'
+import { channelExample } from '../../../cypress/fixtures/channels/channel'
+import { guildExample } from '../../../cypress/fixtures/guilds/guild'
+import { SendMessage as Component, SendMessageProps } from './SendMessage'
 
 const Stories: Meta = {
   title: 'SendMessage',
@@ -9,7 +11,9 @@ const Stories: Meta = {
 
 export default Stories
 
-export const SendMessage: Story = (arguments_) => {
+export const SendMessage: Story<SendMessageProps> = (arguments_) => {
   return <Component {...arguments_} />
 }
-SendMessage.args = {}
+SendMessage.args = {
+  path: { channelId: channelExample.id, guildId: guildExample.id }
+}

components/Application/SendMessage/SendMessage.test.tsx

@@ -1,10 +0,0 @@
-import { render } from '@testing-library/react'
-
-import { SendMessage } from './SendMessage'
-
-describe('<SendMessage />', () => {
-  it('should render successfully', () => {
-    const { baseElement } = render(<SendMessage />)
-    expect(baseElement).toBeTruthy()
-  })
-})

components/Application/SendMessage/SendMessage.tsx

@@ -1,38 +1,126 @@
+import { useState, useRef } from 'react'
 import useTranslation from 'next-translate/useTranslation'
 import TextareaAutosize from 'react-textarea-autosize'
 
-export const SendMessage: React.FC = () => {
+import { GuildsChannelsPath } from '..'
+import { useAuthentication } from '../../../tools/authentication'
+import { EmojiPicker, EmojiPickerOnClick } from '../../Emoji'
+
+export interface SendMessageProps {
+  path: GuildsChannelsPath
+}
+
+export const SendMessage: React.FC<SendMessageProps> = (props) => {
+  const { path } = props
   const { t } = useTranslation()
+  const { authentication } = useAuthentication()
+
+  const [isVisibleEmojiPicker, setIsVisibleEmojiPicker] = useState(false)
+  const [message, setMessage] = useState('')
+  const textareaReference = useRef<HTMLTextAreaElement>(null)
+
+  const handleTextareaKeyDown: React.KeyboardEventHandler<HTMLFormElement> = (
+    event
+  ) => {
+    if (event.key === 'Enter' && !event.shiftKey) {
+      event.preventDefault()
+      event.currentTarget.dispatchEvent(
+        new Event('submit', { cancelable: true, bubbles: true })
+      )
+    }
+  }
+
+  const handleSubmit: React.FormEventHandler<HTMLFormElement> = async (
+    event
+  ) => {
+    event.preventDefault()
+    if (typeof message === 'string' && message.length > 0) {
+      await authentication.api.post(`/channels/${path.channelId}/messages`, {
+        value: message
+      })
+      setMessage('')
+    }
+  }
+
+  const handleTextareaChange: React.ChangeEventHandler<HTMLTextAreaElement> = (
+    event
+  ) => {
+    setMessage(event.target.value)
+  }
+
+  const handleFileChange: React.ChangeEventHandler<HTMLInputElement> = async (
+    event
+  ) => {
+    const files = event?.target?.files
+    if (files != null && files.length === 1) {
+      const file = files[0]
+      const formData = new FormData()
+      formData.append('file', file)
+      await authentication.api.post(
+        `/channels/${path.channelId}/messages/uploads`,
+        formData
+      )
+    }
+  }
+
+  const handleVisibleEmojiPicker = (): void => {
+    setIsVisibleEmojiPicker((isVisible) => !isVisible)
+  }
+
+  const handleEmojiPicker: EmojiPickerOnClick = (emoji) => {
+    const emojiColons = emoji.colons ?? ''
+    setMessage((oldMessage) => {
+      return oldMessage + emojiColons
+    })
+    handleVisibleEmojiPicker()
+    textareaReference.current?.focus()
+  }
 
   return (
-    <div className='p-6 pb-4'>
-      <div className='w-full h-full py-1 flex rounded-lg bg-gray-200 dark:bg-gray-800 text-gray-600 dark:text-gray-200'>
-        <form className='w-full h-full flex items-center'>
-          <TextareaAutosize
-            className='w-full scrollbar-firefox-support p-2 px-6 my-2 bg-transparent outline-none font-paragraph tracking-wide resize-none'
-            placeholder={t('application:write-a-message')}
-            wrap='soft'
-            maxRows={6}
-          />
-        </form>
-        <div className='h-full flex items-center justify-around pr-6'>
-          <button className='w-full h-full flex items-center justify-center p-1 text-2xl transition hover:-translate-y-1'>
-            🙂
-          </button>
-          <button className='relative w-full h-full flex items-center justify-center p-1 text-green-800 dark:text-green-400 transition hover:-translate-y-1'>
-            <input
-              type='file'
-              className='absolute w-full h-full opacity-0 cursor-pointer'
+    <>
+      {isVisibleEmojiPicker && <EmojiPicker onClick={handleEmojiPicker} />}
+      <div className='p-6 pb-4'>
+        <div className='w-full h-full py-1 flex rounded-lg bg-gray-200 dark:bg-gray-800 text-gray-600 dark:text-gray-200'>
+          <form
+            className='w-full h-full flex items-center'
+            onSubmit={handleSubmit}
+            onKeyDown={handleTextareaKeyDown}
+          >
+            <TextareaAutosize
+              className='w-full scrollbar-firefox-support p-2 px-6 my-2 bg-transparent outline-none font-paragraph tracking-wide resize-none'
+              placeholder={t('application:write-a-message')}
+              wrap='soft'
+              maxRows={6}
+              name='message'
+              onChange={handleTextareaChange}
+              value={message}
+              ref={textareaReference}
+              autoFocus
             />
-            <svg width='25' height='25' viewBox='0 0 22 22'>
-              <path
-                d='M11 0C4.925 0 0 4.925 0 11C0 17.075 4.925 22 11 22C17.075 22 22 17.075 22 11C22 4.925 17.075 0 11 0ZM12 15C12 15.2652 11.8946 15.5196 11.7071 15.7071C11.5196 15.8946 11.2652 16 11 16C10.7348 16 10.4804 15.8946 10.2929 15.7071C10.1054 15.5196 10 15.2652 10 15V12H7C6.73478 12 6.48043 11.8946 6.29289 11.7071C6.10536 11.5196 6 11.2652 6 11C6 10.7348 6.10536 10.4804 6.29289 10.2929C6.48043 10.1054 6.73478 10 7 10H10V7C10 6.73478 10.1054 6.48043 10.2929 6.29289C10.4804 6.10536 10.7348 6 11 6C11.2652 6 11.5196 6.10536 11.7071 6.29289C11.8946 6.48043 12 6.73478 12 7V10H15C15.2652 10 15.5196 10.1054 15.7071 10.2929C15.8946 10.4804 16 10.7348 16 11C16 11.2652 15.8946 11.5196 15.7071 11.7071C15.5196 11.8946 15.2652 12 15 12H12V15Z'
-                fill='currentColor'
+          </form>
+          <div className='h-full flex items-center justify-around pr-6'>
+            <button
+              className='w-full h-full flex items-center justify-center p-1 text-2xl transition hover:-translate-y-1'
+              onClick={handleVisibleEmojiPicker}
+            >
+              🙂
+            </button>
+            <button className='cursor-pointer relative w-full h-full flex items-center justify-center p-1 text-green-800 dark:text-green-400 transition hover:-translate-y-1'>
+              <input
+                type='file'
+                className='absolute w-full h-full opacity-0 cursor-pointer'
+                onChange={handleFileChange}
               />
-            </svg>
-          </button>
+              <svg width='25' height='25' viewBox='0 0 22 22'>
+                <path
+                  d='M11 0C4.925 0 0 4.925 0 11C0 17.075 4.925 22 11 22C17.075 22 22 17.075 22 11C22 4.925 17.075 0 11 0ZM12 15C12 15.2652 11.8946 15.5196 11.7071 15.7071C11.5196 15.8946 11.2652 16 11 16C10.7348 16 10.4804 15.8946 10.2929 15.7071C10.1054 15.5196 10 15.2652 10 15V12H7C6.73478 12 6.48043 11.8946 6.29289 11.7071C6.10536 11.5196 6 11.2652 6 11C6 10.7348 6.10536 10.4804 6.29289 10.2929C6.48043 10.1054 6.73478 10 7 10H10V7C10 6.73478 10.1054 6.48043 10.2929 6.29289C10.4804 6.10536 10.7348 6 11 6C11.2652 6 11.5196 6.10536 11.7071 6.29289C11.8946 6.48043 12 6.73478 12 7V10H15C15.2652 10 15.5196 10.1054 15.7071 10.2929C15.8946 10.4804 16 10.7348 16 11C16 11.2652 15.8946 11.5196 15.7071 11.7071C15.5196 11.8946 15.2652 12 15 12H12V15Z'
+                  fill='currentColor'
+                />
+              </svg>
+            </button>
+          </div>
         </div>
       </div>
-    </div>
+    </>
   )
 }

contexts/Messages.tsx

@@ -4,6 +4,7 @@ import { NextPage, usePagination } from 'hooks/usePagination'
 import { useAuthentication } from 'tools/authentication'
 import { MessageWithMember } from 'models/Message'
 import { GuildsChannelsPath } from 'components/Application'
+import { handleSocketData, SocketData } from 'tools/handleSocketData'
 
 export interface Messages {
   messages: MessageWithMember[]
@@ -20,20 +21,44 @@ export interface MessagesProviderProps {
 
 export const MessagesProvider: React.FC<MessagesProviderProps> = (props) => {
   const { path, children } = props
-
   const { authentication } = useAuthentication()
 
   const {
     items: messages,
     hasMore,
     nextPage,
-    resetPagination
+    resetPagination,
+    setItems
   } = usePagination<MessageWithMember>({
     api: authentication.api,
     url: `/channels/${path.channelId}/messages`,
     inverse: true
   })
 
+  useEffect(() => {
+    authentication.socket.on(
+      'messages',
+      (data: SocketData<MessageWithMember>) => {
+        if (data.item.channelId === path.channelId) {
+          const messagesDiv = window.document.getElementById(
+            'messages'
+          ) as HTMLDivElement
+          const isAtBottom =
+            messagesDiv.scrollHeight - messagesDiv.scrollTop <=
+            messagesDiv.clientHeight
+          handleSocketData({ data, setItems })
+          if (data.action === 'create' && isAtBottom) {
+            messagesDiv.scrollTo(0, messagesDiv.scrollHeight)
+          }
+        }
+      }
+    )
+
+    return () => {
+      authentication.socket.off('messages')
+    }
+  }, [authentication.socket, setItems, path])
+
   useEffect(() => {
     resetPagination()
     nextPage(undefined, () => {

hooks/useForm/getErrorTranslationKey.test.ts

@@ -9,7 +9,7 @@ const errorObject: ErrorObject = {
   schemaPath: '/path'
 }
 
-describe('Authentication/getErrorTranslationKey', () => {
+describe('hooks/useForm/getErrorTranslationKey', () => {
   it('returns `errors:invalid` with unknown keyword', async () => {
     expect(
       getErrorTranslationKey({

hooks/usePagination.ts

@@ -15,11 +15,14 @@ export interface UsePaginationOptions {
   inverse?: boolean
 }
 
+export type SetItems<T> = React.Dispatch<React.SetStateAction<T[]>>
+
 export interface UsePaginationResult<T> {
   items: T[]
   nextPage: NextPage
   resetPagination: () => void
   hasMore: boolean
+  setItems: SetItems<T>
 }
 
 export const usePagination = <T extends { id: number }>(
@@ -81,5 +84,5 @@ export const usePagination = <T extends { id: number }>(
     setItems([])
   }, [])
 
-  return { items, hasMore, nextPage, resetPagination }
+  return { items, hasMore, nextPage, resetPagination, setItems }
 }

package.json

@@ -18,7 +18,7 @@
     "generate": "plop",
     "lint:commit": "commitlint",
     "lint:editorconfig": "editorconfig-checker",
-    "lint:markdown": "markdownlint '**/*.md' --dot --ignore 'node_modules'",
+    "lint:markdown": "markdownlint '**/*.md' --dot --ignore-path '.gitignore'",
     "lint:typescript": "eslint '**/*.{js,ts,jsx,tsx}'",
     "lint:prettier": "prettier '.' --check",
     "lint:staged": "lint-staged",
@@ -43,9 +43,9 @@
     "ajv-formats": "2.1.1",
     "axios": "0.24.0",
     "classnames": "2.3.1",
-    "date-and-time": "2.0.1",
+    "date-and-time": "2.1.0",
     "emoji-mart": "3.0.1",
-    "katex": "0.15.1",
+    "katex": "0.15.2",
     "next": "12.0.7",
     "next-pwa": "5.4.4",
     "next-themes": "0.0.15",
@@ -71,16 +71,16 @@
     "universal-cookie": "4.0.4"
   },
   "devDependencies": {
-    "@commitlint/cli": "16.0.1",
+    "@commitlint/cli": "16.0.2",
     "@commitlint/config-conventional": "16.0.0",
     "@lhci/cli": "0.8.2",
     "@saithodev/semantic-release-backmerge": "2.1.0",
-    "@storybook/addon-essentials": "6.4.9",
-    "@storybook/addon-links": "6.4.9",
+    "@storybook/addon-essentials": "6.4.12",
+    "@storybook/addon-links": "6.4.12",
     "@storybook/addon-postcss": "2.0.0",
-    "@storybook/builder-webpack5": "6.4.9",
-    "@storybook/manager-webpack5": "6.4.9",
-    "@storybook/react": "6.4.9",
+    "@storybook/builder-webpack5": "6.4.12",
+    "@storybook/manager-webpack5": "6.4.12",
+    "@storybook/react": "6.4.12",
     "@testing-library/jest-dom": "5.16.1",
     "@testing-library/react": "12.1.2",
     "@types/date-and-time": "0.13.0",
@@ -93,8 +93,8 @@
     "@types/react-responsive": "8.0.5",
     "@types/unist": "2.0.6",
     "@typescript-eslint/eslint-plugin": "4.33.0",
-    "autoprefixer": "10.4.1",
-    "cypress": "9.2.0",
+    "autoprefixer": "10.4.2",
+    "cypress": "9.2.1",
     "editorconfig-checker": "4.0.2",
     "eslint": "7.32.0",
     "eslint-config-next": "12.0.7",
@@ -106,10 +106,10 @@
     "eslint-plugin-promise": "5.1.1",
     "eslint-plugin-storybook": "0.5.5",
     "eslint-plugin-unicorn": "40.0.0",
-    "husky": "7.0.4",
     "html-w3c-validator": "1.0.0",
+    "husky": "7.0.4",
     "jest": "27.4.7",
-    "lint-staged": "12.1.5",
+    "lint-staged": "12.1.7",
     "markdownlint-cli": "0.30.0",
     "mockttp": "2.5.0",
     "next-secure-headers": "2.2.0",
@@ -120,9 +120,9 @@
     "serve": "13.0.2",
     "start-server-and-test": "1.14.0",
     "storybook-tailwind-dark-mode": "1.0.11",
-    "tailwindcss": "3.0.11",
+    "tailwindcss": "3.0.13",
     "typescript": "4.4.4",
     "vercel": "23.1.2",
-    "webpack": "5.65.0"
+    "webpack": "5.66.0"
   }
 }

pages/application/[guildId]/[channelId].tsx

@@ -47,7 +47,7 @@ const ChannelPage: NextPage<ChannelPageProps> = (props) => {
                   title={`# ${selectedChannel.name}`}
                 >
                   <Messages />
-                  <SendMessage />
+                  <SendMessage path={path} />
                 </Application>
               </MessagesProvider>
             </ChannelsProvider>

tools/authentication/AuthenticationContext.tsx

@@ -23,7 +23,9 @@ export const AuthenticationProvider: React.FC<PagePropsWithAuthentication> = (
 
   const authentication = useMemo(() => {
     return new Authentication(props.authentication.tokens)
-  }, [props.authentication.tokens])
+
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- We only want to run this memo once
+  }, [])
 
   useEffect(() => {
     setLanguage(user.settings.language).catch(() => {})

tools/handleSocketData.ts

@@ -0,0 +1,49 @@
+import { SetItems } from '../hooks/usePagination'
+
+export interface Item {
+  id: number
+  [key: string]: any
+}
+
+export interface SocketData<T extends Item = Item> {
+  action: 'create' | 'update' | 'delete'
+  item: T
+}
+
+export interface HandleSocketDataOptions<T extends Item = Item> {
+  setItems: SetItems<T>
+  data: SocketData<T>
+}
+
+export type SocketListener = (data: SocketData) => void
+
+export const handleSocketData = <T extends Item = Item>(
+  options: HandleSocketDataOptions<T>
+): void => {
+  const { data, setItems } = options
+
+  setItems((oldItems) => {
+    const newItems = [...oldItems]
+    switch (data.action) {
+      case 'create': {
+        newItems.push(data.item)
+        break
+      }
+      case 'delete': {
+        const itemIndex = newItems.findIndex((item) => item.id === data.item.id)
+        if (itemIndex !== -1) {
+          newItems.splice(itemIndex, 1)
+        }
+        break
+      }
+      case 'update': {
+        const itemIndex = newItems.findIndex((item) => item.id === data.item.id)
+        if (itemIndex !== -1) {
+          newItems[itemIndex] = data.item
+        }
+        break
+      }
+    }
+    return newItems
+  })
+}