fix: aggregate deleted team as ghost team (#7987)

- If a review was requested from a deleted team, use the ghost team for the comment aggregator.
- Resolves Codeberg/Community#1952
- Unit test added.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7987
Reviewed-by: Beowulf <beowulf@beocode.eu>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

models/issues/comment.go

@@ -652,9 +652,12 @@ func (c *Comment) LoadAssigneeUserAndTeam(ctx context.Context) error {
 
 		if c.Issue.Repo.Owner.IsOrganization() {
 			c.AssigneeTeam, err = organization.GetTeamByID(ctx, c.AssigneeTeamID)
-			if err != nil && !organization.IsErrTeamNotExist(err) {
+			if err != nil {
+				if !organization.IsErrTeamNotExist(err) {
 					return err
 				}
+				c.AssigneeTeam = organization.NewGhostTeam()
+			}
 		}
 	}
 	return nil

models/organization/team.go

@@ -292,3 +292,11 @@ func FixInconsistentOwnerTeams(ctx context.Context) (int64, error) {
 
 	return int64(len(teamIDs)), nil
 }
+
+func NewGhostTeam() *Team {
+	return &Team{
+		ID:        -1,
+		Name:      "Ghost team",
+		LowerName: "ghost team",
+	}
+}

routers/web/repo/action_aggregator_test.go

@@ -94,6 +94,14 @@ func reqReview(t int64, name string, delReq bool) *issue_model.Comment {
 	return c
 }
 
+func ghostReqReview(t, id int64) *issue_model.Comment {
+	c := testComment(t)
+	c.Type = issue_model.CommentTypeReviewRequest
+	c.AssigneeTeam = organization.NewGhostTeam()
+	c.AssigneeTeamID = id
+	return c
+}
+
 func reqReviewList(t int64, del bool, names ...string) *issue_model.Comment {
 	req := []issue_model.RequestReviewTarget{}
 	for _, name := range names {
@@ -588,6 +596,27 @@ func TestCombineReviewRequests(t *testing.T) {
 				reqReviewList(121, true, "titi", "toto-team"),
 			},
 		},
+
+		// Ghost.
+		{
+			name: "ghost reviews",
+			beforeCombined: []*issue_model.Comment{
+				reqReview(1, "titi", false),
+				ghostReqReview(2, 50),
+				ghostReqReview(3, 51),
+				ghostReqReview(4, 50),
+			},
+			afterCombined: []*issue_model.Comment{
+				{
+					PosterID:    1,
+					Type:        issue_model.CommentTypeReviewRequest,
+					CreatedUnix: timeutil.TimeStamp(1),
+					AddedRequestReview: []issue_model.RequestReviewTarget{
+						createReqReviewTarget("titi"), {Team: organization.NewGhostTeam()},
+					},
+				},
+			},
+		},
 	}
 
 	for _, kase := range kases {