feat: add youtube support

Closes #13 

Based on #21

Changes compared with the original PR:

- Used `got` instead of `request`.
- Resolve YouTube usernames, no need to be prefixed with `/user`.


In addition, I setup `domain: false` it's oriented for getting a generic url domain avatar and in this case you are using it for getting specific channel avatar based on url.

I feel I can refactor `domain` into a more generic field called `url` for adding this behavior.

now.json

@@ -1,5 +1,8 @@
 {
   "name": "unavatar",
   "public": true,
-  "alias": "unavatar.now.sh"
+  "alias": "unavatar.now.sh",
+  "env": {
+    "YOUTUBE_API_KEY": "@youtube_api_key"
+  }
 }

package.json

@@ -9,6 +9,16 @@
     "name": "Kiko Beats",
     "url": "https://kikobeats.com"
   },
+  "contributors": [
+    {
+      "name": "Travis CI",
+      "email": "travis@travis-ci.org"
+    },
+    {
+      "name": "Angel M De Miguel",
+      "email": "angel@bitnami.com"
+    }
+  ],
   "repository": {
     "type": "git",
     "url": "git+https://github.com/Kikobeats/unavatar.git"
@@ -18,10 +28,12 @@
   },
   "keywords": [],
   "dependencies": {
-    "aigle": "~1.12.0-alpha.6",
+    "aigle": "~1.12.0-alpha.10",
+    "beauty-error": "~1.0.1",
     "cheerio": "~1.0.0-rc.2",
     "compression": "~1.7.2",
     "cors": "~2.8.4",
+    "debug": "~4.1.0",
     "express": "~4.16.3",
     "got": "~9.3.0",
     "helmet": "~3.14.0",
@@ -33,6 +45,7 @@
     "lodash": "~4.17.10",
     "memoize-one": "~4.0.2",
     "morgan": "~1.9.0",
+    "p-any": "~1.1.0",
     "p-timeout": "~2.0.1",
     "url-regex": "~4.1.1"
   },
@@ -119,9 +132,5 @@
     "scripts": {
       "prechangelog": "git-authors-cli"
     }
-  },
-  "contributors": [
-    "Travis CI <travis@travis-ci.org>",
-    "Angel M De Miguel <angel@bitnami.com>"
-  ]
+  }
 }

src/avatar-url.js

@@ -1,6 +1,8 @@
 'use strict'
 
 const isAbsoluteUrl = require('is-absolute-url')
+const beautyError = require('beauty-error')
+const debug = require('debug')('unavatar')
 const memoizeOne = require('memoize-one')
 const isUrlHttp = require('is-url-http')
 const { get, isNil } = require('lodash')
@@ -62,7 +64,7 @@ module.exports = (fn = getAvatarUrl) => async (req, res) => {
   try {
     url = await pTimeout(fn(username, fallbackUrl), avatarTimeout)
   } catch (err) {
-    console.log('err', err)
+    debug(beautyError(err))
     url = fallbackUrl
   }
 

src/constant.js

@@ -10,5 +10,6 @@ module.exports = {
   cacheTTL: process.env.CACHE_TTL || TWENTY_FOUR_HOURS,
   logLevel: process.env.LOGLEVEL || isProduction ? 'combined' : 'dev',
   avatarSize: process.env.AVATAR_SIZE || 400,
-  avatarTimeout: process.env.AVATAR_TIMEOUT || 3000
+  avatarTimeout: process.env.AVATAR_TIMEOUT || 3000,
+  youtubeApiKey: process.env.YOUTUBE_API_KEY
 }

src/providers/index.js

@@ -8,6 +8,7 @@ const providers = {
   clearbit: require('./clearbit'),
   github: require('./github'),
   facebook: require('./facebook'),
+  youtube: require('./youtube'),
   // gravatar returns a default avatar, so use it as fallback
   gravatar: require('./gravatar')
 }

src/providers/youtube.js

@@ -0,0 +1,50 @@
+'use strict'
+
+const { isNil, chain, get } = require('lodash')
+const pAny = require('p-any')
+const url = require('url')
+const got = require('got')
+
+const { youtubeApiKey } = require('../constant')
+const { URLSearchParams } = url
+
+const getUrl = async (username, { slugProp }) => {
+  const parts = url.parse(username).pathname.split('/')
+  const slug = chain(parts)
+    .filter(p => p !== '')
+    .last()
+    .value()
+
+  const query = new URLSearchParams([
+    ['part', 'id,snippet'],
+    [slugProp, slug],
+    ['key', youtubeApiKey]
+  ]).toString()
+
+  const { body } = await got(
+    'https://content.googleapis.com/youtube/v3/channels',
+    {
+      json: true,
+      query
+    }
+  )
+
+  const avatarUrl = get(body, 'items[0].snippet.thumbnails.medium.url')
+  if (isNil(avatarUrl)) {
+    throw new Error(`YouTube avatar not detected for '${slugProp}'`)
+  }
+  return avatarUrl
+}
+
+module.exports = async username => {
+  return pAny([
+    getUrl(username, { slugProp: 'forUsername' }),
+    getUrl(username, { slugProp: 'id' })
+  ])
+}
+
+module.exports.supported = {
+  email: false,
+  username: true,
+  domain: false
+}

static/index.html

@@ -81,6 +81,9 @@ <h3>Instagram</h3>
     <h3>Twitter</h3>
     <p><code>&lt;img src="https://unavatar.now.sh/twitter/:username" /&gt;</code></p>
     <p>i.e <a target="_blank" href="https://unavatar.now.sh/twitter/kikobeats">https://unavatar.now.sh/twitter/kikobeats</a></p>
+    <h3>YouTube</h3>
+    <p><code>&lt;img src="https://unavatar.now.sh/youtube/:username" /&gt;</code></p>
+    <p>i.e <a target="_blank" href="https://unavatar.now.sh/youtube/caseyneistat">https://unavatar.now.sh/youtube/caseyneistat</a></p>
     <h3>Other domain</h3>
     <p><code>&lt;img src="https://unavatar.now.sh/domain/:domain" /&gt;</code></p>
     <p>i.e <a target="_blank" href="https://unavatar.now.sh/domain/reddit.com">https://unavatar.now.sh/domain/reddit.com</a></p>