Support for private Git repos

lib/git.js

@@ -1,6 +1,7 @@
 // Native
 import path from 'path'
 import url from 'url'
+import childProcess from 'child_process'
 
 // Packages
 import fs from 'fs-promise'
@@ -8,8 +9,67 @@ import download from 'download'
 import tmp from 'tmp-promise'
 import isURL from 'is-url'
 
+const cloneRepo = (parts, tmpDir) => new Promise((resolve, reject) => {
+  let host
+
+  switch (parts.type) {
+    case 'GitLab':
+      host = `gitlab.com`
+      break
+    case 'Bitbucket':
+      host = `bitbucket.org`
+      break
+    default:
+      host = `github.com`
+  }
+
+  const url = `https://${host}/${parts.main}`
+  const ref = parts.ref || (parts.type === 'Bitbucket' ? 'default' : 'master')
+  const cmd = `git clone ${url} --single-branch ${ref}`
+
+  childProcess.exec(cmd, {cwd: tmpDir.path}, (err, stdout) => {
+    if (err) {
+      reject(err)
+    }
+
+    resolve(stdout)
+  })
+})
+
+const renameRepoDir = async (pathParts, tmpDir) => {
+  const tmpContents = await fs.readdir(tmpDir.path)
+
+  const oldTemp = path.join(tmpDir.path, tmpContents[0])
+  const newTemp = path.join(tmpDir.path, pathParts.main.replace('/', '-'))
+
+  await fs.rename(oldTemp, newTemp)
+  tmpDir.path = newTemp
+
+  return tmpDir
+}
+
 const downloadRepo = async repoPath => {
   const pathParts = gitPathParts(repoPath)
+
+  const tmpDir = await tmp.dir({
+    // We'll remove it manually once deployment is done
+    keep: true,
+    // Recursively remove directory when calling respective method
+    unsafeCleanup: true
+  })
+
+  let gitInstalled = true
+
+  try {
+    await cloneRepo(pathParts, tmpDir)
+  } catch (err) {
+    gitInstalled = false
+  }
+
+  if (gitInstalled) {
+    return await renameRepoDir(pathParts, tmpDir)
+  }
+
   let url
 
   switch (pathParts.type) {
@@ -24,13 +84,6 @@ const downloadRepo = async repoPath => {
       url = `https://api.github.com/repos/${pathParts.main}/tarball/${pathParts.ref}`
   }
 
-  const tmpDir = await tmp.dir({
-    // We'll remove it manually once deployment is done
-    keep: true,
-    // Recursively remove directory when calling respective method
-    unsafeCleanup: true
-  })
-
   try {
     await download(url, tmpDir.path, {
       extract: true
@@ -40,15 +93,7 @@ const downloadRepo = async repoPath => {
     return false
   }
 
-  const tmpContents = await fs.readdir(tmpDir.path)
-
-  const oldTemp = path.join(tmpDir.path, tmpContents[0])
-  const newTemp = path.join(tmpDir.path, pathParts.main.replace('/', '-'))
-
-  await fs.rename(oldTemp, newTemp)
-  tmpDir.path = newTemp
-
-  return tmpDir
+  return await renameRepoDir(pathParts, tmpDir)
 }
 
 const capitalizePlatform = name => {