feat/provider: read .scwrc

scaleway/provider.go

@@ -1,10 +1,13 @@
 package scaleway
 
 import (
+	"encoding/json"
+	"os"
 	"sync"
 
 	"github.com/hashicorp/terraform/helper/schema"
 	"github.com/hashicorp/terraform/terraform"
+	homedir "github.com/mitchellh/go-homedir"
 )
 
 var mu = sync.Mutex{}
@@ -68,6 +71,23 @@ func Provider() terraform.ResourceProvider {
 	}
 }
 
+type scalewayConfig struct {
+	Organization string `json:"organization"`
+	Token        string `json:"token"`
+	Version      string `json:"version"`
+}
+
+func readScalewayConfig(path string) (string, string, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return "", "", err
+	}
+
+	var data scalewayConfig
+	err = json.NewDecoder(f).Decode(&data)
+	return data.Token, data.Organization, err
+}
+
 func providerConfigure(d *schema.ResourceData) (interface{}, error) {
 	apiKey := ""
 	if v, ok := d.Get("token").(string); ok {
@@ -78,8 +98,20 @@ func providerConfigure(d *schema.ResourceData) (interface{}, error) {
 		}
 	}
 
+	organization := d.Get("organization").(string)
+
+	if apiKey == "" {
+		if path, err := homedir.Expand(d.Get(".scwrc").(string)); err == nil {
+			scwAPIKey, scwOrganization, err := readScalewayConfig(path)
+			if err == nil {
+				apiKey = scwAPIKey
+				organization = scwOrganization
+			}
+		}
+	}
+
 	config := Config{
-		Organization: d.Get("organization").(string),
+		Organization: organization,
 		APIKey:       apiKey,
 		Region:       d.Get("region").(string),
 	}