fix: move mastodon server to yaml

internal/pipe/mastodon/mastodon.go

@@ -14,11 +14,13 @@ const defaultMessageTemplate = `{{ .ProjectName }} {{ .Tag }} is out! Check it o
 
 type Pipe struct{}
 
-func (Pipe) String() string                 { return "mastodon" }
-func (Pipe) Skip(ctx *context.Context) bool { return !ctx.Config.Announce.Mastodon.Enabled }
+func (Pipe) String() string { return "mastodon" }
+
+func (Pipe) Skip(ctx *context.Context) bool {
+	return !ctx.Config.Announce.Mastodon.Enabled || ctx.Config.Announce.Mastodon.Server == ""
+}
 
 type Config struct {
-	Server       string `env:"MASTODON_SERVER,notEmpty"`
 	ClientID     string `env:"MASTODON_CLIENT_ID,notEmpty"`
 	ClientSecret string `env:"MASTODON_CLIENT_SECRET,notEmpty"`
 	AccessToken  string `env:"MASTODON_ACCESS_TOKEN,notEmpty"`
@@ -43,7 +45,7 @@ func (Pipe) Announce(ctx *context.Context) error {
 	}
 
 	client := mastodon.NewClient(&mastodon.Config{
-		Server:       cfg.Server,
+		Server:       ctx.Config.Announce.Mastodon.Server,
 		ClientID:     cfg.ClientID,
 		ClientSecret: cfg.ClientSecret,
 		AccessToken:  cfg.AccessToken,

internal/pipe/mastodon/mastodon_test.go

@@ -36,22 +36,33 @@ func TestAnnounceMissingEnv(t *testing.T) {
 		},
 	})
 	require.NoError(t, Pipe{}.Default(ctx))
-	require.EqualError(t, Pipe{}.Announce(ctx), `announce: failed to announce to mastodon: env: environment variable "MASTODON_SERVER" should not be empty; environment variable "MASTODON_CLIENT_ID" should not be empty; environment variable "MASTODON_CLIENT_SECRET" should not be empty; environment variable "MASTODON_ACCESS_TOKEN" should not be empty`)
+	require.EqualError(t, Pipe{}.Announce(ctx), `announce: failed to announce to mastodon: env: environment variable "MASTODON_CLIENT_ID" should not be empty; environment variable "MASTODON_CLIENT_SECRET" should not be empty; environment variable "MASTODON_ACCESS_TOKEN" should not be empty`)
 }
 
 func TestSkip(t *testing.T) {
 	t.Run("skip", func(t *testing.T) {
 		require.True(t, Pipe{}.Skip(context.New(config.Project{})))
 	})
 
+	t.Run("skip empty server", func(t *testing.T) {
+		require.True(t, Pipe{}.Skip(context.New(config.Project{
+			Announce: config.Announce{
+				Mastodon: config.Mastodon{
+					Enabled: true,
+					Server:  "", // empty
+				},
+			},
+		})))
+	})
+
 	t.Run("dont skip", func(t *testing.T) {
-		ctx := context.New(config.Project{
+		require.False(t, Pipe{}.Skip(context.New(config.Project{
 			Announce: config.Announce{
 				Mastodon: config.Mastodon{
 					Enabled: true,
+					Server:  "https://mastodon.social",
 				},
 			},
-		})
-		require.False(t, Pipe{}.Skip(ctx))
+		})))
 	})
 }

pkg/config/config.go

@@ -986,6 +986,7 @@ type Twitter struct {
 type Mastodon struct {
 	Enabled         bool   `yaml:"enabled,omitempty" json:"enabled,omitempty"`
 	MessageTemplate string `yaml:"message_template,omitempty" json:"message_template,omitempty"`
+	Server          string `yaml:"server" json:"server"`
 }
 
 type Reddit struct {

www/docs/customization/announce/mastodon.md

@@ -1,9 +1,10 @@
 # Mastodon
 
+> Since: v1.13.0
+
 For it to work, you'll need to create a new Mastodon app `https://social.yourdomain.tld/settings/applications/new`, and set
 some environment variables on your pipeline:
 
-- `MASTODON_SERVER`
 - `MASTODON_CLIENT_ID`
 - `MASTODON_CLIENT_SECRET`
 - `MASTODON_ACCESS_TOKEN`
@@ -21,6 +22,10 @@ announce:
     # Message template to use while publishing.
     # Defaults to `{{ .ProjectName }} {{ .Tag }} is out! Check it out at {{ .ReleaseURL }}`
     message_template: 'Awesome project {{.Tag}} is out!'
+
+    # Mastodon server URL.
+    # Defaults to empty.
+    server: https://mastodon.social
 ```
 
 !!! tip