Add basic configuration object to set global channel and per repo

configuration/config.go

@@ -0,0 +1,32 @@
+package configuration
+
+import (
+	"fmt"
+	"gopkg.in/yaml.v2"
+)
+
+// Configuration holds the general configuration for the executable
+type Configuration struct {
+	DefaultChannel string            `yaml:"default_channel"`
+	Repositories   map[string]string `yaml:"repositories"`
+}
+
+var config Configuration
+
+// Load loads the configuration and sets it globally if loading succeeded
+func Load(in []byte) error {
+	c := Configuration{}
+	err := yaml.Unmarshal(in, &c)
+	if err != nil {
+		return fmt.Errorf("failed to parse configuration: %s", err)
+	}
+
+	config = c
+
+	return nil
+}
+
+// GetConfiguration returns the current configuration
+func GetConfiguration() Configuration {
+	return config
+}

configuration/config_test.go

@@ -0,0 +1,27 @@
+package configuration_test
+
+import (
+	"github.com/stretchr/testify/assert"
+	"gitlab.com/yakshaving.art/propaganda/configuration"
+	"io/ioutil"
+	"testing"
+)
+
+func TestLoadingValidConfiguration(t *testing.T) {
+	a := assert.New(t)
+
+	b, err := ioutil.ReadFile("fixtures/valid.yml")
+	a.NoError(err)
+
+	a.NoError(configuration.Load(b))
+
+	a.EqualValues(
+		configuration.Configuration{
+			DefaultChannel: "#propaganda",
+			Repositories: map[string]string{
+				"pcarranza/test-webhooks": "#private_channel",
+			},
+		},
+		configuration.GetConfiguration(),
+	)
+}

configuration/fixtures/valid.yml

@@ -0,0 +1,4 @@
+---
+default_channel: "#propaganda"
+repositories:
+  pcarranza/test-webhooks: "#private_channel"