live-fns: add packagist support (#75)

* feat: packagist support

Signed-off-by: Brian Faust <envoyer@pm.me>

* style: resolve eslint issues

* fix: add missing spaces

libs/index.md

@@ -139,6 +139,17 @@ Available query params:
       ['version (pre)', '/nuget/v/newtonsoft.json/pre'],
       ['version (latest)', '/nuget/v/newtonsoft.json/latest']
     ],
+    packagist: [
+      ['version (stable)', '/packagist/v/monolog/monolog'],
+      ['version (pre)', '/packagist/v/monolog/monolog/pre'],
+      ['version (latest)', '/packagist/v/monolog/monolog/latest'],
+      ['total downloads', '/packagist/dt/monolog/monolog'],
+      ['daily downloads', '/packagist/dd/monolog/monolog'],
+      ['monthly downloads', '/packagist/dm/monolog/monolog'],
+      ['favers', '/packagist/favers/monolog/monolog'],
+      ['dependents', '/packagist/dependents/monolog/monolog'],
+      ['suggesters', '/packagist/suggesters/monolog/monolog'],
+    ],
     /* CIs */
     travis: [
       ['build', '/travis/babel/babel'],

libs/live-fns/_index.js

@@ -16,6 +16,7 @@ module.exports = {
   'nuget': require('./nuget.js'),
   'opencollective': require('./opencollective.js'),
   'packagephobia': require('./packagephobia.js'),
+  'packagist': require('./packagist.js'),
   'pypi': require('./pypi.js'),
   'runkit': require('./runkit.js'),
   'travis': require('./travis.js'),

libs/live-fns/packagist.js

@@ -0,0 +1,81 @@
+const millify = require('millify')
+
+const axios = require('../axios.js')
+const semColor = require('../utils/sem-color.js')
+
+const pre = versions => versions.filter(v => v.includes('-'))
+const stable = versions => versions.filter(v => !v.includes('-'))
+const latest = versions => versions.length > 0 && versions.slice(-1)[0]
+
+module.exports = async function (topic, vendor, pkg, channel = 'stable') {
+  const endpoint = `https://packagist.org/packages/${vendor}/${pkg}.json`
+  const response = await axios.get(endpoint).then(res => res.data)
+
+  switch (topic) {
+    case 'v':
+      const versions = Object.keys(response.package.versions)
+
+      let version = ''
+
+      switch (channel) {
+        case 'latest':
+          version = latest(versions)
+          break
+        case 'pre':
+          version = latest(pre(versions))
+          break
+        default:
+          version = latest(stable(versions).reverse())
+      }
+
+      version = version || latest(versions)
+
+      return {
+        subject: 'packagist',
+        status: version || 'unknown',
+        color: semColor(version)
+      }
+    case 'dt':
+      return {
+        subject: 'downloads',
+        status: millify(response.package.downloads.total),
+        color: 'green'
+      }
+    case 'dd':
+      return {
+        subject: 'downloads',
+        status: millify(response.package.downloads.daily),
+        color: 'green'
+      }
+    case 'dm':
+      return {
+        subject: 'downloads',
+        status: millify(response.package.downloads.monthly),
+        color: 'green'
+      }
+    case 'favers':
+      return {
+        subject: 'favers',
+        status: millify(response.package.favers),
+        color: 'green'
+      }
+    case 'dependents':
+      return {
+        subject: 'dependents',
+        status: response.package.dependents,
+        color: 'green'
+      }
+    case 'suggesters':
+      return {
+        subject: 'suggesters',
+        status: response.package.suggesters,
+        color: 'green'
+      }
+    default:
+      return {
+        subject: 'packagist',
+        status: 'unknown',
+        color: 'grey'
+      }
+  }
+}