portainer/portainer

package motd

import (
    "net/http"
    "strings"

    portainer "github.com/portainer/portainer/api"
    "github.com/portainer/portainer/api/http/client"
    "github.com/portainer/portainer/pkg/libcrypto"
    "github.com/portainer/portainer/pkg/libhttp/response"

    "github.com/segmentio/encoding/json"
)

type motdResponse struct {
    Title         string            `json:"Title"`
    Message       string            `json:"Message"`
    ContentLayout map[string]string `json:"ContentLayout"`
    Style         string            `json:"Style"`
    Hash          []byte            `json:"Hash"`
}

type motdData struct {
    Title         string            `json:"title"`
    Message       []string          `json:"message"`
    ContentLayout map[string]string `json:"contentLayout"`
    Style         string            `json:"style"`
}

// @id MOTD
// @summary fetches the message of the day
// @description **Access policy**: restricted
// @tags motd
// @security ApiKeyAuth
// @security jwt
// @produce json
// @success 200 {object} motdResponse
// @router /motd [get]
func (handler *Handler) motd(w http.ResponseWriter, r *http.Request) {
    motd, err := client.Get(portainer.MessageOfTheDayURL, 0)
    if err != nil {
        response.JSON(w, &motdResponse{Message: ""})
        return
    }

    var data motdData
    err = json.Unmarshal(motd, &data)
    if err != nil {
        response.JSON(w, &motdResponse{Message: ""})
        return
    }

    message := strings.Join(data.Message, "\n")

    hash := libcrypto.HashFromBytes([]byte(message))
    resp := motdResponse{
        Title:         data.Title,
        Message:       message,
        Hash:          hash,
        ContentLayout: data.ContentLayout,
        Style:         data.Style,
    }

    response.JSON(w, &resp)
}