package service

import (
	"bitbucket.org/BlackBroker/heruvym/dal"
	"bitbucket.org/BlackBroker/heruvym/jwt_adapter"
	"encoding/json"
	"github.com/themakers/hlog"
	"net/http"
)

type Heruvym struct {
	logger hlog.Logger
	dal    *dal.DAL
}

func New(dataAccessLayer *dal.DAL, log hlog.Logger) *Heruvym {
	return &Heruvym{
		logger: log.Module("Service"),
		dal:    dataAccessLayer,
	}
}

func (h Heruvym) Register(m *http.ServeMux) *http.ServeMux  {

	m.HandleFunc("/create", h.CreateTicket)

	return m
}

type CreateTicketReq struct {
	Title   string `json:"Title"`
	Message string `json:"Message"`
}

type CreateTicketResp struct {
	Ticket string `json:"Ticket"`
}

func (h *Heruvym) CreateTicket(w http.ResponseWriter, r *http.Request) {
	defer func() {
		if err := r.Body.Close(); err != nil {
			h.logger.Emit(ErrorClose{
				Err: err,
			})
		}
	}()

	var request CreateTicketReq

	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
		http.Error(w, "Invalid json", http.StatusBadRequest)
		return
	}

	if request.Title == "" {
		http.Error(w, "No Title", http.StatusNoContent)
		return
	}

	if request.Message == "" {
		http.Error(w, "No Message", http.StatusNoContent)
		return
	}

	ctx := r.Context()

	session := jwt_adapter.Get(ctx)

	if session == nil {
		http.Error(w, "No session", http.StatusMethodNotAllowed)
		return
	}

	ticketID, err := h.dal.CreateTicket(
		ctx,
		session.User,
		session.ID,
		request.Title,
	)
	if err != nil {
		http.Error(w, "CannotCreateTicket", http.StatusInternalServerError)
		return
	}

	if err := h.dal.PutMessage(ctx,
		request.Message,
		session.User,
		session.Session,
		ticketID,
		[]string{},
	); err != nil {
		http.Error(w, "CannotCreateMessage", http.StatusInternalServerError)
		return
	}

	response, err := json.Marshal(CreateTicketResp{Ticket: ticketID})
	if err != nil {
		h.logger.Emit(ErrorMarshal{
			Err: err,
		})
		http.Error(w, "CannotMarshalMessage", http.StatusInternalServerError)
		return
	}

	if _, err := w.Write(response); err != nil {
		h.logger.Emit(ErrorMarshal{
			Err: err,
		})
		return
	}
}