import {
  HttpException,
  HttpStatus,
  Injectable,
  NotFoundException,
} from "@nestjs/common";
import { Types } from "mongoose";
import { PlateDbService } from "src/plates/entites/db-service/plate.db.service";
import { AddPlateDto } from "src/profile/dto/user/AddPlateDto";
import { PlateNormalizerService } from "src/utils/plate-normalizer/plate-normalizer.service";

@Injectable()
export class PlatesService {
  constructor(
    private readonly plateDbService: PlateDbService,
    private readonly plateNormalizer: PlateNormalizerService,
  ) {}

  async addPlate(currentUser, body: AddPlateDto) {
    const { plate, nationalCodeOfInsurer } = body;

    const normalizedAlphabet = this.plateNormalizer.normalizePlateText(String(plate.centerAlphabet || ""));
    const duplicate = await this.plateDbService.findOne({
      userId: currentUser,
      leftDigits: plate.leftDigits,
      centerAlphabet: normalizedAlphabet,
      centerDigits: plate.centerDigits,
      ir: plate.ir,
      nationalCodeOfInsurer,
    });

    if (duplicate)
      throw new HttpException("duplicate plate", HttpStatus.CONFLICT);

    const newPlateData = await this.plateDbService.create({
      ...plate,
      centerAlphabet: normalizedAlphabet,
      userId: currentUser,
      nationalCodeOfInsurer: body.nationalCodeOfInsurer,
    });

    return {
      message: "Plate successfully added",
      plate: newPlateData,
    };
  }

  private async checkUniquePlate(plate): Promise<boolean> {
    const {
      userId,
      leftDigits,
      centerAlphabet,
      centerDigits,
      ir,
      nationalCodeOfInsurer,
    } = plate;

    const found = await this.plateDbService.findOne({
      leftDigits,
      centerAlphabet,
      centerDigits,
      userId,
      nationalCodeOfInsurer,
      ir,
    });

    return !found;
  }

  async deletePlate(id: Types.ObjectId) {
    const deleted = await this.plateDbService.findAndRemove(id);
    if (!deleted) throw new NotFoundException("Plate not found");
    return { message: "Plate deleted successfully" };
  }
}