Mainflux.mainflux/pkg/sdk/go/channels.go

// Copyright (c) Mainflux
// SPDX-License-Identifier: Apache-2.0

package sdk

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

	"github.com/mainflux/mainflux/pkg/errors"
)

const channelsEndpoint = "channels"

func (sdk mfSDK) CreateChannel(c Channel, token string) (string, errors.SDKError) {
	data, err := json.Marshal(c)
	if err != nil {
		return "", errors.NewSDKError(err)
	}
	url := fmt.Sprintf("%s/%s", sdk.thingsURL, channelsEndpoint)

	headers, _, sdkerr := sdk.processRequest(http.MethodPost, url, token, string(CTJSON), data, http.StatusCreated)
	if sdkerr != nil {
		return "", sdkerr
	}

	id := strings.TrimPrefix(headers.Get("Location"), fmt.Sprintf("/%s/", channelsEndpoint))
	return id, nil
}

func (sdk mfSDK) CreateChannels(chs []Channel, token string) ([]Channel, errors.SDKError) {
	data, err := json.Marshal(chs)
	if err != nil {
		return []Channel{}, errors.NewSDKError(err)
	}

	url := fmt.Sprintf("%s/%s/%s", sdk.thingsURL, channelsEndpoint, "bulk")

	_, body, sdkerr := sdk.processRequest(http.MethodPost, url, token, string(CTJSON), data, http.StatusCreated)
	if sdkerr != nil {
		return []Channel{}, sdkerr
	}

	var ccr createChannelsRes
	if err := json.Unmarshal(body, &ccr); err != nil {
		return []Channel{}, errors.NewSDKError(err)
	}

	return ccr.Channels, nil
}

func (sdk mfSDK) Channels(pm PageMetadata, token string) (ChannelsPage, errors.SDKError) {
	var url string
	var err error

	if url, err = sdk.withQueryParams(sdk.thingsURL, channelsEndpoint, pm); err != nil {
		return ChannelsPage{}, errors.NewSDKError(err)
	}

	_, body, sdkerr := sdk.processRequest(http.MethodGet, url, token, string(CTJSON), nil, http.StatusOK)
	if sdkerr != nil {
		return ChannelsPage{}, sdkerr
	}

	var cp ChannelsPage
	if err = json.Unmarshal(body, &cp); err != nil {
		return ChannelsPage{}, errors.NewSDKError(err)
	}

	return cp, nil
}

func (sdk mfSDK) ChannelsByThing(thingID string, pm PageMetadata, token string) (ChannelsPage, errors.SDKError) {
	url, err := sdk.withQueryParams(fmt.Sprintf("%s/things/%s", sdk.thingsURL, thingID), channelsEndpoint, pm)
	if err != nil {
		return ChannelsPage{}, errors.NewSDKError(err)
	}
	_, body, sdkerr := sdk.processRequest(http.MethodGet, url, token, string(CTJSON), nil, http.StatusOK)
	if sdkerr != nil {
		return ChannelsPage{}, sdkerr
	}

	var cp ChannelsPage
	if err := json.Unmarshal(body, &cp); err != nil {
		return ChannelsPage{}, errors.NewSDKError(err)
	}

	return cp, nil
}

func (sdk mfSDK) Channel(id, token string) (Channel, errors.SDKError) {
	url := fmt.Sprintf("%s/%s/%s", sdk.thingsURL, channelsEndpoint, id)

	_, body, err := sdk.processRequest(http.MethodGet, url, token, string(CTJSON), nil, http.StatusOK)
	if err != nil {
		return Channel{}, err
	}

	var c Channel
	if err := json.Unmarshal(body, &c); err != nil {
		return Channel{}, errors.NewSDKError(err)
	}

	return c, nil
}

func (sdk mfSDK) UpdateChannel(c Channel, token string) errors.SDKError {
	data, err := json.Marshal(c)
	if err != nil {
		return errors.NewSDKError(err)
	}

	url := fmt.Sprintf("%s/%s/%s", sdk.thingsURL, channelsEndpoint, c.ID)

	_, _, sdkerr := sdk.processRequest(http.MethodPut, url, token, string(CTJSON), data, http.StatusOK)
	return sdkerr
}

func (sdk mfSDK) DeleteChannel(id, token string) errors.SDKError {
	url := fmt.Sprintf("%s/%s/%s", sdk.thingsURL, channelsEndpoint, id)

	_, _, err := sdk.processRequest(http.MethodDelete, url, token, string(CTJSON), nil, http.StatusNoContent)
	return err
}