show manual cron run's last time (#27544)

- Currently in the cron tasks, the 'Previous Time' only displays the
previous time of when the cron library executes the function, but not
any of the manual executions of the task.
- Store the last run's time in memory in the Task struct and use that,
when that time is later than time that the cron library has executed
this task.
- This ensures that if an instance admin manually starts a task, there's
feedback that this task is/has been run, because the task might be run
that quick, that the status icon already has been changed to an
checkmark,
- Tasks that are executed at startup now reflect this as well, as the
time of the execution of that task on startup is now being shown as
'Previous Time'.
- Added integration tests for the API part, which is easier to test
because querying the HTML table of cron tasks is non-trivial.
- Resolves https://codeberg.org/forgejo/forgejo/issues/949

(cherry picked from commit fd34fdac1408ece6b7d9fe6a76501ed9a45d06fa)

---------

Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: silverwind <me@silverwind.io>

2 files changed, 15 insertions, 0 deletions

diff --git a/services/cron/cron.go b/services/cron/cron.go
index e3f31d08f0..63db75ab3b 100644
--- a/services/cron/cron.go
+++ b/services/cron/cron.go
@@ -106,6 +106,12 @@ func ListTasks() TaskTable {
 			next = e.NextRun()
 			prev = e.PreviousRun()
 		}
+
+		// If the manual run is after the cron run, use that instead.
+		if prev.Before(task.LastRun) {
+			prev = task.LastRun
+		}
+
 		task.lock.Lock()
 		tTable = append(tTable, &TaskTableRow{
 			Name:        task.Name,
diff --git a/services/cron/tasks.go b/services/cron/tasks.go
index ea1925c26c..d2c3d1d812 100644
--- a/services/cron/tasks.go
+++ b/services/cron/tasks.go
@@ -9,6 +9,7 @@ import (
 	"reflect"
 	"strings"
 	"sync"
+	"time"
 
 	"code.gitea.io/gitea/models/db"
 	system_model "code.gitea.io/gitea/models/system"
@@ -37,6 +38,8 @@ type Task struct {
 	LastMessage string
 	LastDoer    string
 	ExecTimes   int64
+	// This stores the time of the last manual run of this task.
+	LastRun time.Time
 }
 
 // DoRunAtStart returns if this task should run at the start
@@ -88,6 +91,12 @@ func (t *Task) RunWithUser(doer *user_model.User, config Config) {
 		}
 	}()
 	graceful.GetManager().RunWithShutdownContext(func(baseCtx context.Context) {
+		// Store the time of this run, before the function is executed, so it
+		// matches the behavior of what the cron library does.
+		t.lock.Lock()
+		t.LastRun = time.Now()
+		t.lock.Unlock()
+
 		pm := process.GetManager()
 		doerName := ""
 		if doer != nil && doer.ID != -1 {