Add API to support link package to repository and unlink it (#33481)

Fix #21062

---------

Co-authored-by: Zettat123 <zettat123@gmail.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/services/packages/package_update.go b/services/packages/package_update.go
new file mode 100644
index 0000000000..8d851fac53
--- /dev/null
+++ b/services/packages/package_update.go
@@ -0,0 +1,78 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package packages
+
+import (
+	"context"
+	"fmt"
+
+	org_model "code.gitea.io/gitea/models/organization"
+	packages_model "code.gitea.io/gitea/models/packages"
+	access_model "code.gitea.io/gitea/models/perm/access"
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/models/unit"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/util"
+)
+
+func LinkToRepository(ctx context.Context, pkg *packages_model.Package, repo *repo_model.Repository, doer *user_model.User) error {
+	if pkg.OwnerID != repo.OwnerID {
+		return util.ErrPermissionDenied
+	}
+	if pkg.RepoID > 0 {
+		return util.ErrInvalidArgument
+	}
+
+	perms, err := access_model.GetUserRepoPermission(ctx, repo, doer)
+	if err != nil {
+		return fmt.Errorf("error getting permissions for user %d on repository %d: %w", doer.ID, repo.ID, err)
+	}
+	if !perms.CanWrite(unit.TypePackages) {
+		return util.ErrPermissionDenied
+	}
+
+	if err := packages_model.SetRepositoryLink(ctx, pkg.ID, repo.ID); err != nil {
+		return fmt.Errorf("error while linking package '%v' to repo '%v' : %w", pkg.Name, repo.FullName(), err)
+	}
+	return nil
+}
+
+func UnlinkFromRepository(ctx context.Context, pkg *packages_model.Package, doer *user_model.User) error {
+	if pkg.RepoID == 0 {
+		return util.ErrInvalidArgument
+	}
+
+	repo, err := repo_model.GetRepositoryByID(ctx, pkg.RepoID)
+	if err != nil {
+		return fmt.Errorf("error getting repository %d: %w", pkg.RepoID, err)
+	}
+
+	perms, err := access_model.GetUserRepoPermission(ctx, repo, doer)
+	if err != nil {
+		return fmt.Errorf("error getting permissions for user %d on repository %d: %w", doer.ID, repo.ID, err)
+	}
+	if !perms.CanWrite(unit.TypePackages) {
+		return util.ErrPermissionDenied
+	}
+
+	user, err := user_model.GetUserByID(ctx, pkg.OwnerID)
+	if err != nil {
+		return err
+	}
+	if !doer.IsAdmin {
+		if !user.IsOrganization() {
+			if doer.ID != pkg.OwnerID {
+				return fmt.Errorf("no permission to unlink package '%v' from its repository, or packages are disabled", pkg.Name)
+			}
+		} else {
+			isOrgAdmin, err := org_model.OrgFromUser(user).IsOrgAdmin(ctx, doer.ID)
+			if err != nil {
+				return err
+			} else if !isOrgAdmin {
+				return fmt.Errorf("no permission to unlink package '%v' from its repository, or packages are disabled", pkg.Name)
+			}
+		}
+	}
+	return packages_model.UnlinkRepository(ctx, pkg.ID)
+}