import { NotificationResponse, Resolvers } from "../generated/graphql";
import { ServerContext } from "../ServerContext";
import {
  ETANotificationScheduler,
} from "../notifications/schedulers/ETANotificationScheduler";
import { ScheduledNotification } from "../repositories/NotificationRepository";

export const MutationResolvers: Resolvers<ServerContext> = {
  Mutation: {
    scheduleNotification: async (_parent, args, context, _info) => {
      const shuttle = await context.shuttleRepository.getShuttleById(args.input.shuttleId);
      if (!shuttle) {
        return {
          message: "Shuttle ID doesn't exist",
          success: false,
        }
      }
      const stop = await context.shuttleRepository.getStopById(args.input.stopId);
      if (!stop) {
        return {
          message: "Stop ID doesn't exist",
          success: false,
        }
      }

      const notificationData: ScheduledNotification = {
        ...args.input,
        secondsThreshold: typeof args.input.secondsThreshold === 'number'
          ? args.input.secondsThreshold
          : ETANotificationScheduler.defaultSecondsThresholdForNotificationToFire,
      }

      await context.notificationRepository.scheduleNotification(notificationData);

      const response: NotificationResponse = {
        message: "Notification scheduled",
        success: true,
        data: args.input,
      }
      return response;
    },
    cancelNotification: async (_parent, args, context, _info) => {
      if (context.notificationRepository.isNotificationScheduled(args.input)) {
        await context.notificationRepository.cancelNotificationIfExists(args.input);
        return {
          success: true,
          message: "Notification cancelled",
          data: args.input,
        }
      }

      return {
        success: false,
        message: "Notification doesn't exist"
      }
    },
  },
}