add brew, mariadb

_common/brew.js

@@ -0,0 +1,64 @@
+'use strict';
+
+/**
+ * Gets a releases from 'brew'.
+ *
+ * @param request
+ * @param {string} formula
+ * @returns {PromiseLike<any> | Promise<any>}
+ */
+function getAllReleases(request, formula) {
+  if (!formula) {
+    return Promise.reject('missing formula for brew');
+  }
+  return request({
+    url: 'https://formulae.brew.sh/api/formula/' + formula + '.json',
+    fail: true, // https://git.coolaj86.com/coolaj86/request.js/issues/2
+    json: true
+  })
+    .then(failOnBadStatus)
+    .then(function (resp) {
+      var ver = resp.body.versions.stable;
+      var dl = (
+        resp.body.bottle.stable.files.high_sierra ||
+        resp.body.bottle.stable.files.catalina
+      ).url.replace(new RegExp(ver.replace(/\./g, '\\.'), 'g'), '{{ v }}');
+      return [
+        {
+          version: ver,
+          download: dl.replace(/{{ v }}/g, ver)
+        }
+      ].concat(
+        resp.body.versioned_formulae.map(function (f) {
+          var ver = f.replace(/.*@/, '');
+          return {
+            version: ver,
+            download: dl
+          };
+        })
+      );
+    })
+    .catch(function (err) {
+      console.error('Error fetching MariaDB versions (brew)');
+      console.error(err);
+      return [];
+    });
+}
+
+function failOnBadStatus(resp) {
+  if (resp.statusCode >= 400) {
+    var err = new Error('Non-successful status code: ' + resp.statusCode);
+    err.code = 'ESTATUS';
+    err.response = resp;
+    throw err;
+  }
+  return resp;
+}
+
+module.exports = getAllReleases;
+
+if (module === require.main) {
+  getAllReleases(require('@root/request'), 'mariadb').then(function (all) {
+    console.info(JSON.stringify(all, null, 2));
+  });
+}