package handlers

import (
	"net/http"
	"otaupdate/services"

	"github.com/fiskerinc/cloud-services/pkg/cache"
	"github.com/fiskerinc/cloud-services/pkg/common"
	"github.com/fiskerinc/cloud-services/pkg/utils"
	"github.com/fiskerinc/cloud-services/pkg/validator"
	"github.com/fiskerinc/cloud-services/pkg/loggerdataresp"
)

// HandleVehicleState godoc
// @Summary Get state of car
// @Description Returns the state of the car derived from CAN bus messages.
// @Accept  json
// @Produce  json
// @Param Authorization header string false "Bearer <ID token>"
// @Param Api-Key header string false "<API token>"
// @Param vin query string false "Car vin"
// @Success 200 {object} JSONCarStateMessage
// @Failure 400 {object} common.JSONError "Bad request"
// @Failure 401 {object} common.JSONError "Unauthorized"
// @Failure 503 {object} common.JSONError "Service unavailable"
// @Router /carstate [get]
func HandleVehicleState(w http.ResponseWriter, r *http.Request) {
	vin := r.URL.Query().Get("vin")
	if vin == "" {
		loggerdataresp.BadDataErrorResp(w, ErrMissingVIN, http.StatusBadRequest)
		return
	}
	ok := validator.ValidateVINSimple(vin)
	if !ok {
		loggerdataresp.BadDataErrorResp(w, ErrInvalidVIN, http.StatusBadRequest)
		return
	}

	clientPool := services.RedisClientPool()
	parser := cache.NewVehicleState(clientPool)
	state, err := parser.Get(vin)
	if loggerdataresp.BadDataErrorResp(w, err, http.StatusBadRequest) {
		return
	}

	utils.RespJSON(w, http.StatusOK, &JSONCarStateMessage{
		Data: state,
	})
}

type JSONCarStateMessage struct {
	Data common.CarState `json:"data"`
}