1 files changed, 95 insertions, 0 deletions
diff --git a/services/issue/label.go b/services/issue/label.go
new file mode 100644
index 0000000..6b8070d
--- /dev/null
+++ b/services/issue/label.go
@@ -0,0 +1,95 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package issue
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+	access_model "code.gitea.io/gitea/models/perm/access"
+	user_model "code.gitea.io/gitea/models/user"
+	notify_service "code.gitea.io/gitea/services/notify"
+)
+
+// ClearLabels clears all of an issue's labels
+func ClearLabels(ctx context.Context, issue *issues_model.Issue, doer *user_model.User) error {
+	if err := issues_model.ClearIssueLabels(ctx, issue, doer); err != nil {
+		return err
+	}
+
+	notify_service.IssueClearLabels(ctx, doer, issue)
+
+	return nil
+}
+
+// AddLabel adds a new label to the issue.
+func AddLabel(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, label *issues_model.Label) error {
+	if err := issues_model.NewIssueLabel(ctx, issue, label, doer); err != nil {
+		return err
+	}
+
+	notify_service.IssueChangeLabels(ctx, doer, issue, []*issues_model.Label{label}, nil)
+	return nil
+}
+
+// AddLabels adds a list of new labels to the issue.
+func AddLabels(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, labels []*issues_model.Label) error {
+	if err := issues_model.NewIssueLabels(ctx, issue, labels, doer); err != nil {
+		return err
+	}
+
+	notify_service.IssueChangeLabels(ctx, doer, issue, labels, nil)
+	return nil
+}
+
+// RemoveLabel removes a label from issue by given ID.
+func RemoveLabel(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, label *issues_model.Label) error {
+	dbCtx, committer, err := db.TxContext(ctx)
+	if err != nil {
+		return err
+	}
+	defer committer.Close()
+
+	if err := issue.LoadRepo(dbCtx); err != nil {
+		return err
+	}
+
+	perm, err := access_model.GetUserRepoPermission(dbCtx, issue.Repo, doer)
+	if err != nil {
+		return err
+	}
+	if !perm.CanWriteIssuesOrPulls(issue.IsPull) {
+		if label.OrgID > 0 {
+			return issues_model.ErrOrgLabelNotExist{}
+		}
+		return issues_model.ErrRepoLabelNotExist{}
+	}
+
+	if err := issues_model.DeleteIssueLabel(dbCtx, issue, label, doer); err != nil {
+		return err
+	}
+
+	if err := committer.Commit(); err != nil {
+		return err
+	}
+
+	notify_service.IssueChangeLabels(ctx, doer, issue, nil, []*issues_model.Label{label})
+	return nil
+}
+
+// ReplaceLabels removes all current labels and add new labels to the issue.
+func ReplaceLabels(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, labels []*issues_model.Label) error {
+	old, err := issues_model.GetLabelsByIssueID(ctx, issue.ID)
+	if err != nil {
+		return err
+	}
+
+	if err := issues_model.ReplaceIssueLabels(ctx, issue, labels, doer); err != nil {
+		return err
+	}
+
+	notify_service.IssueChangeLabels(ctx, doer, issue, labels, old)
+	return nil
+}