feat: add env variables support

config.example.yaml

@@ -19,8 +19,6 @@ tokensSecret: SecureSecret
 webhookSecret: GitHub
 # The website language.
 language: en
-# The website title.
-title: "The Website Title"
 # Turn on TOR Onion service (with Onion-Location header).
 tor: true
 
@@ -31,18 +29,18 @@ login:
   # Encrypted password. Use 'eagle pwd' to generate the password.
   password: invalidSecret
 
-# Webmentions configuration.
-webmentions:
-  # Webmention.io (https://webmention.io) secret for incoming webmentions.
-  secret: MySecret
-
 # Enable support for comments. They are moderated through the same view as
 # Webmentions, and stored in the same file. You need to add a form to your posts
 # to submit a comment to the '/comments' endpoint.
 comments:
   # Must be set to enable. Page to which to redirect users after commenting.
   redirect: /my-thank-you-page/
 
+# Webmentions configuration.
+webmentions:
+  # Webmention.io (https://webmention.io) secret for incoming webmentions.
+  secret: MySecret
+
 # Optional Micropub configuration. Disabled otherwise.
 micropub:
   # Which of your Hugo taxonomy is Micropub channels. Disabled if not set.

core/config.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/url"
 	"path/filepath"
+	"strings"
 
 	"github.com/spf13/viper"
 	"go.hacdias.com/indielib/micropub"
@@ -48,18 +49,22 @@ type ServerConfig struct {
 	Comments      Comments
 	Webmentions   Webmentions
 	Micropub      *Micropub
-	Plugins       map[string]map[string]interface{}
-	MeiliSearch   *MeiliSearch
 	Notifications Notifications
 	BunnyCDN      *BunnyCDN
+	MeiliSearch   *MeiliSearch
 	ImgProxy      *ImgProxy
+	Plugins       map[string]map[string]interface{}
 }
 
 func parseServerConfig() (*ServerConfig, error) {
 	v := viper.New()
 	v.SetConfigName("config")
 	v.AddConfigPath(".")
 
+	v.SetEnvPrefix("eagle")
+	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+	v.AutomaticEnv()
+
 	err := v.ReadInConfig()
 	if err != nil {
 		return nil, err
@@ -154,14 +159,14 @@ func (u *Login) validate() error {
 	return nil
 }
 
-type Webmentions struct {
-	Secret string
-}
-
 type Comments struct {
 	Redirect string
 }
 
+type Webmentions struct {
+	Secret string
+}
+
 type Micropub struct {
 	ChannelsTaxonomy   string
 	CategoriesTaxonomy string