Add container.FilterSlice function (#30339)

Many places have the following logic:
```go
func (jobs ActionJobList) GetRunIDs() []int64 {
	ids := make(container.Set[int64], len(jobs))
	for _, j := range jobs {
		if j.RunID == 0 {
			continue
		}
		ids.Add(j.RunID)
	}
	return ids.Values()
}
```

this introduces a `container.FilterMapUnique` function, which reduces
the code above to:
```go
func (jobs ActionJobList) GetRunIDs() []int64 {
	return container.FilterMapUnique(jobs, func(j *ActionRunJob) (int64, bool) {
		return j.RunID, j.RunID != 0
	})
}
```

models/actions/run_job_list.go

@@ -16,14 +16,9 @@ import (
 type ActionJobList []*ActionRunJob
 
 func (jobs ActionJobList) GetRunIDs() []int64 {
-	ids := make(container.Set[int64], len(jobs))
-	for _, j := range jobs {
-		if j.RunID == 0 {
-			continue
-		}
-		ids.Add(j.RunID)
-	}
-	return ids.Values()
+	return container.FilterSlice(jobs, func(j *ActionRunJob) (int64, bool) {
+		return j.RunID, j.RunID != 0
+	})
 }
 
 func (jobs ActionJobList) LoadRuns(ctx context.Context, withRepo bool) error {

models/actions/run_list.go

@@ -19,19 +19,15 @@ type RunList []*ActionRun
 
 // GetUserIDs returns a slice of user's id
 func (runs RunList) GetUserIDs() []int64 {
-	ids := make(container.Set[int64], len(runs))
-	for _, run := range runs {
-		ids.Add(run.TriggerUserID)
-	}
-	return ids.Values()
+	return container.FilterSlice(runs, func(run *ActionRun) (int64, bool) {
+		return run.TriggerUserID, true
+	})
 }
 
 func (runs RunList) GetRepoIDs() []int64 {
-	ids := make(container.Set[int64], len(runs))
-	for _, run := range runs {
-		ids.Add(run.RepoID)
-	}
-	return ids.Values()
+	return container.FilterSlice(runs, func(run *ActionRun) (int64, bool) {
+		return run.RepoID, true
+	})
 }
 
 func (runs RunList) LoadTriggerUser(ctx context.Context) error {

models/actions/runner_list.go

@@ -16,14 +16,9 @@ type RunnerList []*ActionRunner
 
 // GetUserIDs returns a slice of user's id
 func (runners RunnerList) GetUserIDs() []int64 {
-	ids := make(container.Set[int64], len(runners))
-	for _, runner := range runners {
-		if runner.OwnerID == 0 {
-			continue
-		}
-		ids.Add(runner.OwnerID)
-	}
-	return ids.Values()
+	return container.FilterSlice(runners, func(runner *ActionRunner) (int64, bool) {
+		return runner.OwnerID, runner.OwnerID != 0
+	})
 }
 
 func (runners RunnerList) LoadOwners(ctx context.Context) error {

models/actions/schedule_list.go

@@ -18,19 +18,15 @@ type ScheduleList []*ActionSchedule
 
 // GetUserIDs returns a slice of user's id
 func (schedules ScheduleList) GetUserIDs() []int64 {
-	ids := make(container.Set[int64], len(schedules))
-	for _, schedule := range schedules {
-		ids.Add(schedule.TriggerUserID)
-	}
-	return ids.Values()
+	return container.FilterSlice(schedules, func(schedule *ActionSchedule) (int64, bool) {
+		return schedule.TriggerUserID, true
+	})
 }
 
 func (schedules ScheduleList) GetRepoIDs() []int64 {
-	ids := make(container.Set[int64], len(schedules))
-	for _, schedule := range schedules {
-		ids.Add(schedule.RepoID)
-	}
-	return ids.Values()
+	return container.FilterSlice(schedules, func(schedule *ActionSchedule) (int64, bool) {
+		return schedule.RepoID, true
+	})
 }
 
 func (schedules ScheduleList) LoadTriggerUser(ctx context.Context) error {

models/actions/schedule_spec_list.go

@@ -16,11 +16,9 @@ import (
 type SpecList []*ActionScheduleSpec
 
 func (specs SpecList) GetScheduleIDs() []int64 {
-	ids := make(container.Set[int64], len(specs))
-	for _, spec := range specs {
-		ids.Add(spec.ScheduleID)
-	}
-	return ids.Values()
+	return container.FilterSlice(specs, func(spec *ActionScheduleSpec) (int64, bool) {
+		return spec.ScheduleID, true
+	})
 }
 
 func (specs SpecList) LoadSchedules(ctx context.Context) error {
@@ -46,11 +44,9 @@ func (specs SpecList) LoadSchedules(ctx context.Context) error {
 }
 
 func (specs SpecList) GetRepoIDs() []int64 {
-	ids := make(container.Set[int64], len(specs))
-	for _, spec := range specs {
-		ids.Add(spec.RepoID)
-	}
-	return ids.Values()
+	return container.FilterSlice(specs, func(spec *ActionScheduleSpec) (int64, bool) {
+		return spec.RepoID, true
+	})
 }
 
 func (specs SpecList) LoadRepos(ctx context.Context) error {

models/actions/task_list.go

@@ -16,14 +16,9 @@ import (
 type TaskList []*ActionTask
 
 func (tasks TaskList) GetJobIDs() []int64 {
-	ids := make(container.Set[int64], len(tasks))
-	for _, t := range tasks {
-		if t.JobID == 0 {
-			continue
-		}
-		ids.Add(t.JobID)
-	}
-	return ids.Values()
+	return container.FilterSlice(tasks, func(t *ActionTask) (int64, bool) {
+		return t.JobID, t.JobID != 0
+	})
 }
 
 func (tasks TaskList) LoadJobs(ctx context.Context) error {

models/activities/action_list.go

@@ -22,11 +22,9 @@ import (
 type ActionList []*Action
 
 func (actions ActionList) getUserIDs() []int64 {
-	userIDs := make(container.Set[int64], len(actions))
-	for _, action := range actions {
-		userIDs.Add(action.ActUserID)
-	}
-	return userIDs.Values()
+	return container.FilterSlice(actions, func(action *Action) (int64, bool) {
+		return action.ActUserID, true
+	})
 }
 
 func (actions ActionList) LoadActUsers(ctx context.Context) (map[int64]*user_model.User, error) {
@@ -50,11 +48,9 @@ func (actions ActionList) LoadActUsers(ctx context.Context) (map[int64]*user_mod
 }
 
 func (actions ActionList) getRepoIDs() []int64 {
-	repoIDs := make(container.Set[int64], len(actions))
-	for _, action := range actions {
-		repoIDs.Add(action.RepoID)
-	}
-	return repoIDs.Values()
+	return container.FilterSlice(actions, func(action *Action) (int64, bool) {
+		return action.RepoID, true
+	})
 }
 
 func (actions ActionList) LoadRepositories(ctx context.Context) error {
@@ -80,18 +76,16 @@ func (actions ActionList) loadRepoOwner(ctx context.Context, userMap map[int64]*
 		userMap = make(map[int64]*user_model.User)
 	}
 
-	userSet := make(container.Set[int64], len(actions))
-	for _, action := range actions {
+	missingUserIDs := container.FilterSlice(actions, func(action *Action) (int64, bool) {
 		if action.Repo == nil {
-			continue
+			return 0, false
 		}
-		if _, ok := userMap[action.Repo.OwnerID]; !ok {
-			userSet.Add(action.Repo.OwnerID)
-		}
-	}
+		_, alreadyLoaded := userMap[action.Repo.OwnerID]
+		return action.Repo.OwnerID, !alreadyLoaded
+	})
 
 	if err := db.GetEngine(ctx).
-		In("id", userSet.Values()).
+		In("id", missingUserIDs).
 		Find(&userMap); err != nil {
 		return fmt.Errorf("find user: %w", err)
 	}

models/git/branch_list.go

@@ -17,15 +17,12 @@ import (
 type BranchList []*Branch
 
 func (branches BranchList) LoadDeletedBy(ctx context.Context) error {
-	ids := container.Set[int64]{}
-	for _, branch := range branches {
-		if !branch.IsDeleted {
-			continue
-		}
-		ids.Add(branch.DeletedByID)
-	}
+	ids := container.FilterSlice(branches, func(branch *Branch) (int64, bool) {
+		return branch.DeletedByID, branch.IsDeleted
+	})
+
 	usersMap := make(map[int64]*user_model.User, len(ids))
-	if err := db.GetEngine(ctx).In("id", ids.Values()).Find(&usersMap); err != nil {
+	if err := db.GetEngine(ctx).In("id", ids).Find(&usersMap); err != nil {
 		return err
 	}
 	for _, branch := range branches {
@@ -41,14 +38,13 @@ func (branches BranchList) LoadDeletedBy(ctx context.Context) error {
 }
 
 func (branches BranchList) LoadPusher(ctx context.Context) error {
-	ids := container.Set[int64]{}
-	for _, branch := range branches {
-		if branch.PusherID > 0 { // pusher_id maybe zero because some branches are sync by backend with no pusher
-			ids.Add(branch.PusherID)
-		}
-	}
+	ids := container.FilterSlice(branches, func(branch *Branch) (int64, bool) {
+		// pusher_id maybe zero because some branches are sync by backend with no pusher
+		return branch.PusherID, branch.PusherID > 0
+	})
+
 	usersMap := make(map[int64]*user_model.User, len(ids))
-	if err := db.GetEngine(ctx).In("id", ids.Values()).Find(&usersMap); err != nil {
+	if err := db.GetEngine(ctx).In("id", ids).Find(&usersMap); err != nil {
 		return err
 	}
 	for _, branch := range branches {

models/issues/comment.go

@@ -1272,10 +1272,9 @@ func InsertIssueComments(ctx context.Context, comments []*Comment) error {
 		return nil
 	}
 
-	issueIDs := make(container.Set[int64])
-	for _, comment := range comments {
-		issueIDs.Add(comment.IssueID)
-	}
+	issueIDs := container.FilterSlice(comments, func(comment *Comment) (int64, bool) {
+		return comment.IssueID, true
+	})
 
 	ctx, committer, err := db.TxContext(ctx)
 	if err != nil {
@@ -1298,7 +1297,7 @@ func InsertIssueComments(ctx context.Context, comments []*Comment) error {
 		}
 	}
 
-	for issueID := range issueIDs {
+	for _, issueID := range issueIDs {
 		if _, err := db.Exec(ctx, "UPDATE issue set num_comments = (SELECT count(*) FROM comment WHERE issue_id = ? AND `type`=?) WHERE id = ?",
 			issueID, CommentTypeComment, issueID); err != nil {
 			return err