characteristics.go

/*
 * Copyright 2019 InfAI (CC SES)
 *
 * 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 api

import (
	"encoding/json"
	"github.com/SENERGY-Platform/device-repository/lib/config"
	"github.com/SENERGY-Platform/models/go/models"
	"github.com/julienschmidt/httprouter"
	"log"
	"net/http"
	"strconv"
)

func init() {
	endpoints = append(endpoints, Characteristics)
}

func Characteristics(config config.Config, control Controller, router *httprouter.Router) {
	resource := "/characteristics"

	router.GET(resource, func(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
		leafsOnly, err := strconv.ParseBool(request.URL.Query().Get("leafsOnly"))
		if err != nil {
			http.Error(writer, err.Error(), http.StatusInternalServerError)
			return
		}

		if leafsOnly {
			result, err, errCode := control.GetLeafCharacteristics()
			if err != nil {
				http.Error(writer, err.Error(), errCode)
				return
			}
			writer.Header().Set("Content-Type", "application/json; charset=utf-8")
			err = json.NewEncoder(writer).Encode(result)
			if err != nil {
				log.Println("ERROR: unable to encode response", err)
			}
		}

		return
	})

	router.GET(resource+"/:id", func(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
		id := params.ByName("id")
		result, err, errCode := control.GetCharacteristic(id)
		if err != nil {
			http.Error(writer, err.Error(), errCode)
			return
		}
		writer.Header().Set("Content-Type", "application/json; charset=utf-8")
		err = json.NewEncoder(writer).Encode(result)
		if err != nil {
			log.Println("ERROR: unable to encode response", err)
		}
		return
	})

	router.PUT(resource, func(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
		dryRun, err := strconv.ParseBool(request.URL.Query().Get("dry-run"))
		if err != nil {
			http.Error(writer, err.Error(), http.StatusBadRequest)
			return
		}
		if !dryRun {
			http.Error(writer, "only with query-parameter 'dry-run=true' allowed", http.StatusNotImplemented)
			return
		}
		characteristic := models.Characteristic{}
		err = json.NewDecoder(request.Body).Decode(&characteristic)
		if err != nil {
			http.Error(writer, err.Error(), http.StatusBadRequest)
			return
		}
		err, code := control.ValidateCharacteristics(characteristic)
		if err != nil {
			http.Error(writer, err.Error(), code)
			return
		}
		writer.WriteHeader(http.StatusOK)
	})

	router.DELETE(resource+"/:id", func(writer http.ResponseWriter, request *http.Request, params httprouter.Params) {
		dryRun, err := strconv.ParseBool(request.URL.Query().Get("dry-run"))
		if err != nil {
			http.Error(writer, err.Error(), http.StatusBadRequest)
			return
		}
		if !dryRun {
			http.Error(writer, "only with query-parameter 'dry-run=true' allowed", http.StatusNotImplemented)
			return
		}
		id := params.ByName("id")
		err, code := control.ValidateCharacteristicDelete(id)
		if err != nil {
			http.Error(writer, err.Error(), code)
			return
		}
		writer.WriteHeader(http.StatusOK)
	})
}