import { Injectable } from '@nestjs/common';
import { InjectModel } from '@nestjs/sequelize';
import { BlacklistReport } from './models/blacklistReport.model';
import { BlacklistItem } from './types/blacklistItem';
import { BlacklistItemList } from './types/blacklistItemList';
import { BlacklistReportDto } from './dto/blacklistReport';
import { BadRequestException } from '@nestjs/common';

@Injectable()
export class BlacklistService {
  constructor(
    @InjectModel(BlacklistReport)
    private blacklistReportModel: typeof BlacklistReport,
  ) {}

  getHealthCheck(): string {
    return 'OK';
  }

  async getAllRecords(): Promise<BlacklistItemList> {
    const allRecords = await this.blacklistReportModel.findAll({ raw: true });
    return this.groupRecordsByLink(allRecords);
  }

  async getRecordsByLink(link: string): Promise<BlacklistItemList> {
    const allRecords: BlacklistReport[] =
      await this.blacklistReportModel.findAll({
        raw: true,
        where: { steam_link: link },
      });
    return this.groupRecordsByLink(allRecords);
  }

  groupRecordsByLink(records: BlacklistReport[]): BlacklistItemList {
    const result: BlacklistItemList = {};
    for (const record of records) {
      if (result[record.steam_link]) {
        const item: BlacklistItem = result[record.steam_link];
        if (record.steam_nickname !== null) {
          item.nicknames.push(record.steam_nickname);
        }
        item.comments.push(record.comment);
        item.toxic += Number(record.toxic);
        item.cheater += Number(record.cheater);
        item.afk += Number(record.afk);
        item.useless += Number(record.useless);
        item.griefer += Number(record.griefer);
        result[record.steam_link] = item;
      } else {
        const item: BlacklistItem = {
          link: record.steam_link,
          nicknames: [],
          comments: [],
          toxic: Number(record.toxic),
          cheater: Number(record.cheater),
          afk: Number(record.afk),
          useless: Number(record.useless),
          griefer: Number(record.griefer),
        };
        if (record.steam_nickname !== null) {
          item.nicknames.push(record.steam_nickname);
        }
        item.comments.push(record.comment);
        result[record.steam_link] = item;
      }
    }
    return result;
  }

  async createBlacklistRecord(
    blackListReportDto: BlacklistReportDto,
  ): Promise<BlacklistReport> {
    const report = BlacklistReport.build(blackListReportDto);
    return await report.save();
  }

  async updateBlacklistRecord(
    blackListReportDto: BlacklistReportDto,
  ): Promise<BlacklistReport> {
    const record = await this.blacklistReportModel.findOne({
      where: { id: blackListReportDto.id },
      raw: false,
    });

    if (!record) {
      throw new BadRequestException('Record not found', {
        cause: new Error(),
        description: `Report with id ${blackListReportDto.id} does not exist in the blacklist`,
      });
    }

    // Update fields with validation to ensure types are correct
    record.steam_link = blackListReportDto.steam_link;
    record.comment = blackListReportDto.comment;
    record.toxic = blackListReportDto.toxic;
    record.cheater = blackListReportDto.cheater;
    record.afk = blackListReportDto.afk;
    record.useless = blackListReportDto.useless;
    record.griefer = blackListReportDto.griefer;

    return await record.save();
  }

  async deleteBlacklistRecord(id: number): Promise<boolean> {
    try {
      const item = await this.blacklistReportModel.findByPk(id);

      if (!item) {
        return false;
      }

      await item.destroy();
      return true;
    } catch (error) {
      return false;
    }
  }
}