feat: RFC commands

.env.example

@@ -1,4 +1,5 @@
 BOT_TOKEN=
 CLIENT_ID=
 OWNERS_IDS=
-COMMAND_PREFIX=!
+COMMAND_PREFIX=!
+GITHUB_TOKEN=

data/rfcs/.gitignore

@@ -0,0 +1 @@
+rfcs.json

package.json

@@ -32,6 +32,7 @@
     "eslint-plugin-prettier": "^3.1.0",
     "eslint-plugin-vue": "^5.2.3",
     "esm": "^3.2.25",
+    "github-api": "^3.3.0",
     "fuse.js": "^3.4.6",
     "hjson": "^3.1.2",
     "prettier": "^1.18.2"

src/client.js

@@ -61,6 +61,10 @@ client.registry.registerGroups([
     id: 'jobs',
     name: 'Jobs',
   },
+  {
+    id: 'rfcs',
+    name: 'RFCs',
+  },
 ])
 
 if (NODE_ENV === 'development') {

src/commands/rfcs/reload.js

@@ -0,0 +1,51 @@
+import { Command } from 'discord.js-commando'
+import { RichEmbed } from 'discord.js'
+import { reloadCache } from '../../services/rfcs'
+import { EMPTY_MESSAGE, ROLES } from '../../utils/constants'
+import { cleanupErrorResponse, cleanupInvocation } from '../../utils/messages'
+
+const ALLOWED_ROLES = [ROLES.MODERATORS, ROLES.CORE_TEAM, ROLES.BOT_DEVELOPERS]
+
+module.exports = class RFCsCommand extends Command {
+  constructor(client) {
+    super(client, {
+      name: 'reload-rfcs',
+      group: 'rfcs',
+      guildOnly: true,
+      memberName: 'reload',
+      description: 'Reload the RFCs from the Github API and recache them.',
+    })
+  }
+
+  hasPermission(msg) {
+    if (msg.member.roles.some(role => ALLOWED_ROLES.includes(role.id))) {
+      return true
+    }
+
+    return false
+  }
+
+  async run(msg) {
+    const embed = new RichEmbed('Reload RFCs')
+
+    try {
+      await reloadCache()
+      embed
+        .setDescription(
+          '✅ Fetched RFC PRs from Github and re-cached them to disc.'
+        )
+        .setColor('GREEN')
+    } catch (error) {
+      console.error(error)
+      embed
+        .setDescription(
+          '❎ An error occured while fetching and recaching the RFC PRs.'
+        )
+        .setColor('RED')
+    } finally {
+      const reply = await msg.channel.send(EMPTY_MESSAGE, { embed })
+      cleanupInvocation(msg)
+      cleanupErrorResponse(reply)
+    }
+  }
+}

src/commands/rfcs/rfc.js

@@ -0,0 +1,209 @@
+import { Command } from 'discord.js-commando'
+import { RichEmbed } from 'discord.js'
+import {
+  findRFCs,
+  filterRFCsBy,
+  RFCDoesNotExistError,
+} from '../../services/rfcs'
+import {
+  EMPTY_MESSAGE,
+  DISCORD_EMBED_DESCRIPTION_LIMIT,
+} from '../../utils/constants'
+import { cleanupErrorResponse, cleanupInvocation } from '../../utils/messages'
+import { inlineCode, addEllipsis } from '../../utils/string'
+import {
+  respondWithPaginatedEmbed,
+  DEFAULT_EMBED_COLOUR,
+} from '../../utils/embed'
+
+module.exports = class RFCsCommand extends Command {
+  constructor(client) {
+    super(client, {
+      args: [
+        {
+          key: 'query',
+          type: 'optional-kv-pair',
+          prompt: 'an RFC number, title, body, author or label to search for?',
+          validate(val) {
+            if (Array.isArray(val)) {
+              return ['id', 'title', 'body', 'author', 'label'].includes(val[0])
+            }
+
+            return true
+          },
+        },
+      ],
+      name: 'rfc',
+      examples: [
+        inlineCode('!rfcs'),
+        inlineCode('!rfc #23'),
+        inlineCode('!rfc initial placeholder'),
+        inlineCode('!rfc empty node'),
+        inlineCode('!rfc yyx'),
+        inlineCode('!rfc core'),
+        inlineCode('!rfc id:29'),
+        inlineCode('!rfc title:initial placeholder'),
+        inlineCode('!rfc body:empty node'),
+        inlineCode('!rfc author:yyx'),
+        inlineCode('!rfc label:core'),
+        inlineCode('!rfc label:breaking change,router'),
+        inlineCode('!rfc label:3.x | core'),
+      ],
+      group: 'rfcs',
+      guildOnly: false,
+      memberName: 'rfc',
+      description: 'Search for and view a Vue RFC.',
+      argsPromptLimit: 1,
+    })
+  }
+
+  hasPermission() {
+    return true
+  }
+
+  async run(msg, args) {
+    let { query } = args
+    let success = false
+    let [filter, value] = query
+
+    let embed
+
+    try {
+      let rfcs
+
+      if (filter === 'empty') {
+        rfcs = await findRFCs(value)
+      } else {
+        rfcs = await filterRFCsBy(filter, value)
+      }
+
+      if (rfcs.length === 0) {
+        throw new RFCDoesNotExistError()
+      } else if (rfcs.length === 1) {
+        embed = this.buildResponseEmbed(msg, rfcs[0])
+      } else {
+        return respondWithPaginatedEmbed(
+          msg,
+          this.buildDisambiguationEmbed(msg, rfcs, filter, value),
+          rfcs.map(rfc => this.buildResponseEmbed(msg, rfc, filter, value))
+        )
+      }
+      success = true // For finally block.
+    } catch (error) {
+      if (error instanceof RFCDoesNotExistError) {
+        embed = this.buildErrorEmbed(
+          msg,
+          "Sorry, I couldn't find any matches for your query on the RFC repo.",
+          query
+        )
+      } else {
+        console.error(error)
+        embed = this.buildErrorEmbed(
+          msg,
+          'Sorry, an unspecified error occured!',
+          query
+        )
+      }
+    } finally {
+      const reply = await msg.channel.send(EMPTY_MESSAGE, embed)
+      cleanupInvocation(msg)
+
+      if (!success) {
+        cleanupErrorResponse(reply)
+      }
+    }
+  }
+
+  buildErrorEmbed(msg, error, query = []) {
+    let [filter, value] = query
+    let lookup = filter === 'empty' ? value : `${filter}:${value}`
+
+    return new RichEmbed()
+      .setTitle(`RFC Lookup - ${inlineCode(lookup)}`)
+      .setDescription(error)
+      .setAuthor(
+        (msg.member ? msg.member.displayName : msg.author.username) +
+          ' requested:',
+        msg.author.avatarURL
+      )
+      .setColor('RED')
+  }
+
+  buildResponseEmbed(msg, rfc) {
+    const embed = new RichEmbed()
+      .setTitle(`RFC #${rfc.number} - ${rfc.title}`)
+      .setURL(rfc.html_url)
+      .setThumbnail('attachment://vue.png')
+      .attachFile({
+        attachment: 'assets/images/icons/vue.png',
+        name: 'vue.png',
+      })
+      .addField('Author', rfc.user.login, true)
+      .addField('Status', rfc.state, true)
+
+    embed.setDescription(
+      addEllipsis(
+        rfc.body.replace(/(?<=```)[ ]*(?=\w+)/g, ''),
+        DISCORD_EMBED_DESCRIPTION_LIMIT
+      )
+    )
+
+    let footerSections = []
+
+    if (rfc.created_at) {
+      footerSections.push(
+        'Created: ' + new Date(rfc.created_at).toLocaleDateString()
+      )
+    }
+
+    if (rfc.updated_at) {
+      footerSections.push(
+        'Updated: ' + new Date(rfc.updated_at).toLocaleDateString()
+      )
+    }
+
+    if (footerSections.length) {
+      embed.setFooter(footerSections.join(' | '))
+    }
+
+    if (rfc.labels.length) {
+      embed.addField(
+        'Labels',
+        rfc.labels.map(label => label.name).join(', '),
+        true
+      )
+    }
+
+    let labelsWithColours = rfc.labels.filter(label =>
+      ['core', 'vuex', 'router'].includes(label.name)
+    )
+
+    if (labelsWithColours.length) {
+      embed.setColor(`#${labelsWithColours[0].color}`)
+    } else {
+      embed.setColor(DEFAULT_EMBED_COLOUR)
+    }
+
+    return embed
+  }
+
+  buildDisambiguationEmbed(msg, rfcs, filter, value) {
+    let query = filter === 'empty' ? value : `${filter}:${value}`
+
+    return new RichEmbed()
+      .setTitle(`RFC Request - ${inlineCode(query)}`)
+      .setDescription(
+        `Sorry, I couldn't find an exact match for your query on the RFC repo.`
+      )
+      .setThumbnail('attachment://vue.png')
+      .attachFile({
+        attachment: 'assets/images/icons/vue.png',
+        name: 'vue.png',
+      })
+      .addField(
+        'Perhaps you meant one of these:',
+        rfcs.map(rfc => inlineCode('#' + rfc.number)).join(', ')
+      )
+      .setColor('BLUE')
+  }
+}