feat: Add converting mirror repos to normal to the API (#8932)

- Add `POST /repos/{owner}/{repo}/convert` to the API to allow mirror repositories to be converted to normal repositories.
- Resolves forgejo/forgejo#7733

Co-authored-by: Charles Martinot <charles.martinot@protonmail.com>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8932
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: mactynow <mactynow@noreply.codeberg.org>
Co-committed-by: mactynow <mactynow@noreply.codeberg.org>

routers/api/v1/repo/repo.go

@@ -672,6 +672,47 @@ func Edit(ctx *context.APIContext) {
 	ctx.JSON(http.StatusOK, convert.ToRepo(ctx, repo, ctx.Repo.Permission))
 }
 
+// Convert converts a mirror to a normal repo
+func Convert(ctx *context.APIContext) {
+	// swagger:operation POST /repos/{owner}/{repo}/convert repository repoConvert
+	// ---
+	// summary: Convert a mirror repo to a normal repo.
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: owner
+	//   in: path
+	//   description: owner of the repo to convert
+	//   type: string
+	//   required: true
+	// - name: repo
+	//   in: path
+	//   description: name of the repo to convert
+	//   type: string
+	//   required: true
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/Repository"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+
+	if err := convertMirrorToNormalRepo(ctx); err != nil {
+		return
+	}
+
+	repo, err := repo_model.GetRepositoryByID(ctx, ctx.Repo.Repository.ID)
+	if err != nil {
+		ctx.InternalServerError(err)
+		return
+	}
+
+	ctx.JSON(http.StatusOK, convert.ToRepo(ctx, repo, ctx.Repo.Permission))
+}
+
 // updateBasicProperties updates the basic properties of a repo: Name, Description, Website and Visibility
 func updateBasicProperties(ctx *context.APIContext, opts api.EditRepoOption) error {
 	owner := ctx.Repo.Owner
@@ -1140,6 +1181,25 @@ func updateMirror(ctx *context.APIContext, opts api.EditRepoOption) error {
 	return nil
 }
 
+// convertMirrorToNormalRepository converts a mirror to a normal repo
+func convertMirrorToNormalRepo(ctx *context.APIContext) error {
+	repo := ctx.Repo.Repository
+
+	if !repo.IsMirror {
+		err := errors.New("Repository is not a mirror")
+		ctx.Error(http.StatusUnprocessableEntity, "ConvertMirror", err)
+		return nil
+	}
+
+	if err := repo_service.ConvertMirrorToNormalRepo(ctx, repo); err != nil {
+		log.Error("Failed to Disable Mirror: %s", err)
+		ctx.Error(http.StatusUnprocessableEntity, "ConvertMirror", err)
+		return err
+	}
+
+	return nil
+}
+
 // Delete one repository
 func Delete(ctx *context.APIContext) {
 	// swagger:operation DELETE /repos/{owner}/{repo} repository repoDelete