Fix to ensure unique document IDs when batch reports are generated

internal/report/definition.go

@@ -3,6 +3,7 @@ package report
 
 import (
 	"fmt"
+	"strings"
 	"time"
 
 	"gitea.maximumdirect.net/eric/weatherreporter/internal/module"
@@ -60,6 +61,7 @@ type Definition struct {
 	Morning               bool
 	Evening               bool
 	resolve               func(ResolveRequest) (timeutil.Period, error)
+	runIDDisambiguator    func(Resolved) string
 }
 
 func (d Definition) ResolvePeriod(req ResolveRequest) (timeutil.Period, error) {
@@ -112,7 +114,7 @@ type Metadata struct {
 
 func (r Resolved) Metadata() Metadata {
 	return Metadata{
-		RunID:       r.GeneratedAt.UTC().Format("20060102T150405.000000000Z") + "_" + string(r.Definition.ID),
+		RunID:       r.runID(),
 		ReportID:    r.Definition.ID,
 		PromptID:    r.Definition.PromptID,
 		GeneratedAt: r.GeneratedAt,
@@ -120,3 +122,15 @@ func (r Resolved) Metadata() Metadata {
 		ValidPeriod: r.ValidPeriod,
 	}
 }
+
+func (r Resolved) runID() string {
+	runID := r.GeneratedAt.UTC().Format("20060102T150405.000000000Z") + "_" + string(r.Definition.ID)
+	if r.Definition.runIDDisambiguator == nil {
+		return runID
+	}
+	disambiguator := strings.TrimSpace(r.Definition.runIDDisambiguator(r))
+	if disambiguator == "" {
+		return runID
+	}
+	return runID + "_" + disambiguator
+}