Add configurable report module composition

internal/briefing/base_modules.go

@@ -1,6 +1,7 @@
 package briefing
 
 import (
+	"fmt"
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/facts"
@@ -134,19 +135,30 @@ func buildAlertDigestModule(ctx ModuleContext, _ any) (*module.Output, error) {
 	return &module.Output{ID: module.AlertDigest, StanzaName: "alert_digest", Value: *value}, nil
 }
 
-func buildAreaForecastDiscussionModule(ctx ModuleContext, _ any) (*module.Output, error) {
+func buildAreaForecastDiscussionModule(ctx ModuleContext, options any) (*module.Output, error) {
 	discussion := ctx.Collected.Discussion
 	if discussion == nil {
 		return nil, nil
 	}
-	value := AreaForecastDiscussionModule{
-		Product:     discussion.Product,
-		KeyMessages: append([]string(nil), discussion.KeyMessages...),
+	opts, ok := options.(module.AreaForecastDiscussionOptions)
+	if !ok {
+		return nil, fmt.Errorf("area forecast discussion options have type %T", options)
 	}
-	if discussion.ShortTerm != nil {
+	sections, err := areaForecastDiscussionSections(opts)
+	if err != nil {
+		return nil, err
+	}
+	value := AreaForecastDiscussionModule{}
+	if sections["product"] {
+		value.Product = discussion.Product
+	}
+	if sections["key_messages"] {
+		value.KeyMessages = append([]string(nil), discussion.KeyMessages...)
+	}
+	if sections["short_term"] && discussion.ShortTerm != nil {
 		value.ShortTerm = discussion.ShortTerm.Text
 	}
-	if discussion.LongTerm != nil {
+	if sections["long_term"] && discussion.LongTerm != nil {
 		value.LongTerm = discussion.LongTerm.Text
 	}
 	if value.Product == "" && len(value.KeyMessages) == 0 && value.ShortTerm == "" && value.LongTerm == "" {
@@ -155,6 +167,27 @@ func buildAreaForecastDiscussionModule(ctx ModuleContext, _ any) (*module.Output
 	return &module.Output{ID: module.AreaForecastDiscussion, StanzaName: "area_forecast_discussion", Value: value}, nil
 }
 
+func areaForecastDiscussionSections(options module.AreaForecastDiscussionOptions) (map[string]bool, error) {
+	if len(options.Sections) == 0 {
+		return map[string]bool{
+			"product":      true,
+			"key_messages": true,
+			"short_term":   true,
+			"long_term":    true,
+		}, nil
+	}
+	sections := map[string]bool{}
+	for _, section := range options.Sections {
+		switch section {
+		case "product", "key_messages", "short_term", "long_term":
+			sections[section] = true
+		default:
+			return nil, fmt.Errorf("area forecast discussion section %q is not supported", section)
+		}
+	}
+	return sections, nil
+}
+
 func buildWeatherStoryModule(ctx ModuleContext, _ any) (*module.Output, error) {
 	story := ctx.Collected.WeatherStory
 	if story == nil {

internal/briefing/base_modules_test.go

@@ -174,6 +174,26 @@ func TestAreaForecastDiscussionAndWeatherStoryModules(t *testing.T) {
 	}
 }
 
+func TestAreaForecastDiscussionModuleCanSelectSections(t *testing.T) {
+	registry := MustDefaultModuleRegistry()
+	ctx := testModuleContext()
+
+	output, err := registry.BuildModule(ctx, module.ConfigItem{
+		ID:      module.AreaForecastDiscussion,
+		Options: module.AreaForecastDiscussionOptions{Sections: []string{"short_term"}},
+	})
+	if err != nil {
+		t.Fatalf("BuildModule() error = %v", err)
+	}
+	afd := moduleValue[AreaForecastDiscussionModule](t, output)
+	if afd.ShortTerm != "Showers increase this afternoon." {
+		t.Fatalf("ShortTerm = %q, want selected short term section", afd.ShortTerm)
+	}
+	if afd.Product != "" || len(afd.KeyMessages) != 0 || afd.LongTerm != "" {
+		t.Fatalf("AFD = %#v, want only short_term section", afd)
+	}
+}
+
 func testModuleContext() ModuleContext {
 	generatedAt := mustParseModuleTime("2026-05-29T08:00:00-05:00")
 	definition := report.DefaultRegistry().MustLookup(report.DailyToday)