goreleaser: complete build ids

completers/goreleaser_completer/cmd/build.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"github.com/carapace-sh/carapace"
+	"github.com/carapace-sh/carapace-bin/pkg/actions/tools/goreleaser"
 	"github.com/spf13/cobra"
 )
 
@@ -39,6 +40,9 @@ func init() {
 	// TODO build ids
 	carapace.Gen(buildCmd).FlagCompletion(carapace.ActionMap{
 		"config": carapace.ActionFiles(),
+		"id": carapace.ActionCallback(func(c carapace.Context) carapace.Action {
+			return goreleaser.ActionBuilds(buildCmd.Flag("config").Value.String())
+		}),
 		"output": carapace.ActionFiles(),
 		"skip":   carapace.ActionValues("before", "post-hooks", "pre-hooks", "validate").UniqueList(","),
 	})

pkg/actions/tools/goreleaser/build.go

@@ -0,0 +1,45 @@
+package goreleaser
+
+import (
+	"os"
+
+	"github.com/carapace-sh/carapace"
+	"gopkg.in/yaml.v3"
+)
+
+type goreleaserConfig struct {
+	Builds []struct {
+		Id string
+	}
+}
+
+// ActionBuilds completes build ids.
+//
+//	default
+//	termux
+func ActionBuilds(path string) carapace.Action {
+	return carapace.ActionCallback(func(c carapace.Context) carapace.Action {
+		if path == "" {
+			path = ".goreleaser.yaml"
+			if _, err := os.Stat(path); err != nil && os.IsNotExist(err) {
+				path = ".goreleaser.yml"
+			}
+		}
+
+		content, err := os.ReadFile(path)
+		if err != nil {
+			return carapace.ActionMessage(err.Error())
+		}
+
+		var config goreleaserConfig
+		if err := yaml.Unmarshal(content, &config); err != nil {
+			return carapace.ActionMessage(err.Error())
+		}
+
+		vals := make([]string, 0)
+		for _, build := range config.Builds {
+			vals = append(vals, build.Id)
+		}
+		return carapace.ActionValues(vals...)
+	}).Tag("builds")
+}