4 files changed, 70 insertions, 0 deletions
diff --git a/routers/api/v1/api.go b/routers/api/v1/api.go
index 1244676508..5aa8ad44e5 100644
--- a/routers/api/v1/api.go
+++ b/routers/api/v1/api.go
@@ -1327,6 +1327,7 @@ func Routes() *web.Router {
 				m.Get("/issue_config", context.ReferencesGitRepo(), repo.GetIssueConfig)
 				m.Get("/issue_config/validate", context.ReferencesGitRepo(), repo.ValidateIssueConfig)
 				m.Get("/languages", reqRepoReader(unit.TypeCode), repo.GetLanguages)
+				m.Get("/licenses", reqRepoReader(unit.TypeCode), repo.GetLicenses)
 				m.Get("/activities/feeds", repo.ListRepoActivityFeeds)
 				m.Get("/new_pin_allowed", repo.AreNewIssuePinsAllowed)
 				m.Group("/avatar", func() {
diff --git a/routers/api/v1/repo/license.go b/routers/api/v1/repo/license.go
new file mode 100644
index 0000000000..8a6bdfd42f
--- /dev/null
+++ b/routers/api/v1/repo/license.go
@@ -0,0 +1,51 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"net/http"
+
+	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/services/context"
+)
+
+// GetLicenses returns licenses
+func GetLicenses(ctx *context.APIContext) {
+	// swagger:operation GET /repos/{owner}/{repo}/licenses repository repoGetLicenses
+	// ---
+	// summary: Get repo licenses
+	// produces:
+	//   - application/json
+	// parameters:
+	// - name: owner
+	//   in: path
+	//   description: owner of the repo
+	//   type: string
+	//   required: true
+	// - name: repo
+	//   in: path
+	//   description: name of the repo
+	//   type: string
+	//   required: true
+	// responses:
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "200":
+	//     "$ref": "#/responses/LicensesList"
+
+	licenses, err := repo_model.GetRepoLicenses(ctx, ctx.Repo.Repository)
+	if err != nil {
+		log.Error("GetRepoLicenses failed: %v", err)
+		ctx.InternalServerError(err)
+		return
+	}
+
+	resp := make([]string, len(licenses))
+	for i := range licenses {
+		resp[i] = licenses[i].License
+	}
+
+	ctx.JSON(http.StatusOK, resp)
+}
diff --git a/routers/api/v1/repo/repo.go b/routers/api/v1/repo/repo.go
index 1bcec8fcf7..6c1a94ee16 100644
--- a/routers/api/v1/repo/repo.go
+++ b/routers/api/v1/repo/repo.go
@@ -731,6 +731,7 @@ func updateBasicProperties(ctx *context.APIContext, opts api.EditRepoOption) err
 	}
 
 	// Default branch only updated if changed and exist or the repository is empty
+	updateRepoLicense := false
 	if opts.DefaultBranch != nil && repo.DefaultBranch != *opts.DefaultBranch && (repo.IsEmpty || ctx.Repo.GitRepo.IsBranchExist(*opts.DefaultBranch)) {
 		if !repo.IsEmpty {
 			if err := gitrepo.SetDefaultBranch(ctx, ctx.Repo.Repository, *opts.DefaultBranch); err != nil {
@@ -739,6 +740,7 @@ func updateBasicProperties(ctx *context.APIContext, opts api.EditRepoOption) err
 					return err
 				}
 			}
+			updateRepoLicense = true
 		}
 		repo.DefaultBranch = *opts.DefaultBranch
 	}
@@ -748,6 +750,15 @@ func updateBasicProperties(ctx *context.APIContext, opts api.EditRepoOption) err
 		return err
 	}
 
+	if updateRepoLicense {
+		if err := repo_service.AddRepoToLicenseUpdaterQueue(&repo_service.LicenseUpdaterOptions{
+			RepoID: ctx.Repo.Repository.ID,
+		}); err != nil {
+			ctx.Error(http.StatusInternalServerError, "AddRepoToLicenseUpdaterQueue", err)
+			return err
+		}
+	}
+
 	log.Trace("Repository basic settings updated: %s/%s", owner.Name, repo.Name)
 	return nil
 }
diff --git a/routers/api/v1/swagger/repo.go b/routers/api/v1/swagger/repo.go
index 345835f9a5..b9d2a0217c 100644
--- a/routers/api/v1/swagger/repo.go
+++ b/routers/api/v1/swagger/repo.go
@@ -359,6 +359,13 @@ type swaggerLanguageStatistics struct {
 	Body map[string]int64 `json:"body"`
 }
 
+// LicensesList
+// swagger:response LicensesList
+type swaggerLicensesList struct {
+	// in: body
+	Body []string `json:"body"`
+}
+
 // CombinedStatus
 // swagger:response CombinedStatus
 type swaggerCombinedStatus struct {