package handlers

import (
	"fmt"
	"io"
	"net/http"

	"github.com/fiskerinc/cloud-services/pkg/common/actionlogger"
	"github.com/fiskerinc/cloud-services/pkg/common/carupdatestatus"
	"github.com/fiskerinc/cloud-services/pkg/logger"
	uhelpers "github.com/fiskerinc/cloud-services/pkg/usecase_helpers"
	"github.com/fiskerinc/cloud-services/pkg/utils"

	"otaupdate/services"

	"github.com/fiskerinc/cloud-services/pkg/common"
	"github.com/fiskerinc/cloud-services/pkg/httphandlers"
	"github.com/fiskerinc/cloud-services/pkg/loggerdataresp"
)

// HandleCarUpdatesAdd godoc
// @Summary Add car updates
// @Description Create car updates assigning manifest package to cars, and send notifications
// @Accept  json
// @Produce  json
// @Param Authorization header string false "Bearer <ID token>"
// @Param Api-Key header string false "<API token>"
// @Param data body usecase_helpers.JSONCarUpdatesRequest true "Update manifest or package id and, car ids"
// @Success 200 {object} common.JSONDBQueryResult{data=[]common.CarUpdate} "Created car updates result"
// @Failure 400 {object} common.JSONError "Bad request"
// @Failure 401 {object} common.JSONError "Unauthorized"
// @Failure 503 {object} common.JSONError "Service unavailable"
// @Router /carupdate [post]
func HandleCarUpdatesAdd(w http.ResponseWriter, r *http.Request) {
	var req uhelpers.JSONCarUpdatesRequest
	var ups []common.CarUpdate

	err := httphandlers.ParseRequest(r, &req)
	if loggerdataresp.BadDataErrorResp(w, err, http.StatusBadRequest) {
		return
	}

	username := httphandlers.GetClientID(r)

	manifest, err := getManifest(req.UpdateManifestID)
	if loggerdataresp.BadDataErrorResp(w, err, http.StatusNotFound, loggerdataresp.PostgresNoRowsErrorCheck) {
		return
	}

	d := services.GetDB().GetCarUpdates()
	k := services.GetKafkaProducer()

	alDB := services.GetDB().GetActionLog()
	go func() {
		actionLog := actionlogger.ActionLog{
			VIN:            "",
			Action:         actionlogger.CarUpdate,
			UserIdentifier: httphandlers.GetClientID(r),
			CallLocation:   "github.com/fiskerinc/cloud-services/services/ota_update_go/handlers/car_update_add.go",
			Description:    fmt.Sprintf("UpdateManifest: %d", req.UpdateManifestID),
		}
		for _, vin := range req.VINs {
			actionLog.VIN = vin
			err = alDB.Insert(actionLog)
			if err != nil {
				logger.Err(err).Msg("failed to insert action log inside HandleCarUpdatesAdd")
			}
		}
	}()

	notifier := uhelpers.NewUpdateNotifier(d, k)

	ups, err = notifier.Send(req.VINs, manifest, username)
	if loggerdataresp.BadDataErrorResp(w, err, http.StatusServiceUnavailable) {
		return
	}

	for _, vin := range req.VINs {
		// Notify car user of in progress update through FOA API
		fs := services.GetFoaService()
		foaResp, err := fs.OtaUpdateStatus(vin, &common.CarUpdate{UpdateManifestID: req.UpdateManifestID}, &common.CarUpdateProgress{Status: carupdatestatus.Pending})
		if err != nil || (foaResp != nil && foaResp.StatusCode != http.StatusOK) {
			bodyBytes, _ := io.ReadAll(foaResp.Body)
			bodyString := string(bodyBytes)
			logger.Err(err).Msgf("notify FOA for update manifest %d pending state %s for %s failed with http status %d and message %s", req.UpdateManifestID, carupdatestatus.Pending, vin, foaResp.StatusCode, bodyString)
			err = nil
		}
	}

	utils.RespJSON(w, http.StatusOK, common.JSONDBQueryResult{
		Data: ups,
	})
}

func getManifest(manifestID int64) (common.UpdateManifest, error) {
	um := services.GetDB().GetUpdateManifests()
	manifest := common.UpdateManifest{ID: manifestID}

	err := um.Load(&manifest)

	return manifest, err
}