From 8efde6386516ff3370558100ccc31995011432b7 Mon Sep 17 00:00:00 2001
From: Felix Wiedmann <privat@felixwiedmann.de>
Date: Mon, 17 Jun 2019 22:30:17 +0200
Subject: [PATCH] fix(internal/releaser): add helper method to lookup for
 provider accesToken in environment variabels

---
 internal/releaser/github/github.go | 10 ++++++++--
 internal/releaser/util/util.go     | 15 +++++++++++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/internal/releaser/github/github.go b/internal/releaser/github/github.go
index 66a7043..a8de1b6 100644
--- a/internal/releaser/github/github.go
+++ b/internal/releaser/github/github.go
@@ -29,16 +29,22 @@ type Client struct {
 
 // New initialize a new GitHubRelease
 func New(c *config.GitHubProvider) (*Client, error) {
+	var err error
+
+	if c.AccessToken, err = util.GetAccessToken(GITHUB); err != nil {
+		return &Client{}, err
+	}
 	ctx := context.Background()
 	httpClient := util.CreateBearerHTTPClient(ctx, c.AccessToken)
 
 	var client *github.Client
-	var err error
 	baseURL := "https://github.com"
 	if c.CustomURL == "" {
 		client = github.NewClient(httpClient)
 	} else {
-		client, err = github.NewEnterpriseClient(c.CustomURL, c.CustomURL+"/api/v3/", httpClient)
+		if client, err = github.NewEnterpriseClient(c.CustomURL, c.CustomURL+"/api/v3/", httpClient); err != nil {
+			return &Client{}, err
+		}
 		baseURL = c.CustomURL
 	}
 	return &Client{
diff --git a/internal/releaser/util/util.go b/internal/releaser/util/util.go
index 6479ace..50d42fb 100644
--- a/internal/releaser/util/util.go
+++ b/internal/releaser/util/util.go
@@ -2,7 +2,10 @@ package util
 
 import (
 	"context"
+	"fmt"
 	"net/http"
+	"os"
+	"strings"
 
 	"golang.org/x/oauth2"
 )
@@ -17,3 +20,15 @@ func CreateBearerHTTPClient(ctx context.Context, token string) *http.Client {
 
 	return client
 }
+
+// GetAccessToken lookup for the providers accesstoken
+func GetAccessToken(providerName string) (string, error) {
+	var token string
+	var exists bool
+	envName := fmt.Sprintf("%s_ACCESS_TOKEN", strings.ToUpper(providerName))
+
+	if token, exists = os.LookupEnv(envName); !exists {
+		return "", fmt.Errorf("Could not find %s in the enviroment variables. Please check if it is set", envName)
+	}
+	return token, nil
+}