Add event.schedule context for schedule actions task (#37320)

Fix #35452

---------

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>
Co-authored-by: Giteabot <teabot@gitea.io>

services/actions/schedule_tasks.go

@@ -12,6 +12,7 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unit"
+	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/timeutil"
 	webhook_module "code.gitea.io/gitea/modules/webhook"
@@ -67,7 +68,7 @@ func startTasks(ctx context.Context) error {
 				continue
 			}
 
-			if err := CreateScheduleTask(ctx, row.Schedule); err != nil {
+			if err := CreateScheduleTask(ctx, row); err != nil {
 				log.Error("CreateScheduleTask: %v", err)
 				return err
 			}
@@ -97,9 +98,12 @@ func startTasks(ctx context.Context) error {
 	return nil
 }
 
-// CreateScheduleTask creates a scheduled task from a cron action schedule.
+// CreateScheduleTask creates a scheduled task from a cron action schedule spec.
 // It creates an action run based on the schedule, inserts it into the database, and creates commit statuses for each job.
-func CreateScheduleTask(ctx context.Context, cron *actions_model.ActionSchedule) error {
+func CreateScheduleTask(ctx context.Context, spec *actions_model.ActionScheduleSpec) error {
+	cron := spec.Schedule
+	eventPayload := withScheduleInEventPayload(cron.EventPayload, spec.Spec)
+
 	// Create a new action run based on the schedule
 	run := &actions_model.ActionRun{
 		Title:         cron.Title,
@@ -110,7 +114,7 @@ func CreateScheduleTask(ctx context.Context, cron *actions_model.ActionSchedule)
 		Ref:           cron.Ref,
 		CommitSHA:     cron.CommitSHA,
 		Event:         cron.Event,
-		EventPayload:  cron.EventPayload,
+		EventPayload:  eventPayload,
 		TriggerEvent:  string(webhook_module.HookEventSchedule),
 		ScheduleID:    cron.ID,
 		Status:        actions_model.StatusWaiting,
@@ -126,3 +130,24 @@ func CreateScheduleTask(ctx context.Context, cron *actions_model.ActionSchedule)
 	// Return nil if no errors occurred
 	return nil
 }
+
+func withScheduleInEventPayload(eventPayload, schedule string) string {
+	if schedule == "" || eventPayload == "" {
+		return eventPayload
+	}
+
+	event := map[string]any{}
+	if err := json.Unmarshal([]byte(eventPayload), &event); err != nil {
+		log.Error("withScheduleInEventPayload: unmarshal: %v", err)
+		return eventPayload
+	}
+
+	event["schedule"] = schedule
+	updatedPayload, err := json.Marshal(event)
+	if err != nil {
+		log.Error("withScheduleInEventPayload: marshal: %v", err)
+		return eventPayload
+	}
+
+	return string(updatedPayload)
+}

services/actions/schedule_tasks_test.go

@@ -0,0 +1,41 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package actions
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/modules/json"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithScheduleInEventPayload(t *testing.T) {
+	t.Run("adds schedule to existing payload", func(t *testing.T) {
+		payload := `{"ref":"refs/heads/main"}`
+		updated := withScheduleInEventPayload(payload, "*/5 * * * *")
+
+		event := map[string]any{}
+		assert.NoError(t, json.Unmarshal([]byte(updated), &event))
+		assert.Equal(t, "*/5 * * * *", event["schedule"])
+		assert.Equal(t, "refs/heads/main", event["ref"])
+	})
+
+	t.Run("keeps empty payload", func(t *testing.T) {
+		updated := withScheduleInEventPayload("", "37 12 5 1 2")
+		assert.Empty(t, updated)
+	})
+
+	t.Run("keeps payload when schedule empty", func(t *testing.T) {
+		payload := `{"ref":"refs/heads/main"}`
+		updated := withScheduleInEventPayload(payload, "")
+		assert.Equal(t, payload, updated)
+	})
+
+	t.Run("keeps payload when malformed JSON", func(t *testing.T) {
+		payload := `not a json object`
+		updated := withScheduleInEventPayload(payload, "*/5 * * * *")
+		assert.Equal(t, payload, updated)
+	})
+}