//  Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package oci

import (
	"encoding/json"
	"net/http"

	"github.com/harness/gitness/registry/app/dist_temp/errcode"
)

func (h *Handler) GetReferrers(w http.ResponseWriter, r *http.Request) {
	info, err := h.getRegistryInfo(r, false)
	if err != nil {
		handleErrors(r.Context(), []error{err}, w)
		return
	}
	defer r.Body.Close()
	errorsList := make(errcode.Errors, 0)

	index, responseHeaders, err := h.Controller.GetReferrers(r.Context(), info, r.URL.Query().Get("artifactType"))
	if err != nil {
		errorsList = append(errorsList, err)
	}
	if index != nil {
		responseHeaders.WriteHeadersToResponse(w)
		if err := json.NewEncoder(w).Encode(index); err != nil {
			errorsList = append(errorsList, errcode.ErrCodeUnknown.WithDetail(err))
		}
	}

	handleErrors(r.Context(), errorsList, w)
}