import { Injectable } from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import { LogService } from '../log/log.service';
import { ObatService } from '../obat/obat.service';
import { RekammedisService } from '../rekammedis/rekammedis.service';
import { TindakanDokterService } from '../tindakandokter/tindakandokter.service';
import { sha256 } from '@api/common/crypto/hash';

@Injectable()
export class AuditService {
  constructor(
    // private readonly prisma: PrismaService,
    private readonly logService: LogService,
    private readonly obatService: ObatService,
    private readonly rekamMedisService: RekammedisService,
    private readonly tindakanDokterService: TindakanDokterService,
  ) {}

  async getAuditTrails(pageSize: number, bookmark: string) {
    if (!pageSize || pageSize <= 0) {
      pageSize = 10;
    }
    if (!bookmark) {
      bookmark = '';
    }
    const logs = await this.logService.getLogsWithPagination(
      pageSize,
      bookmark,
    );
    console.log('Fetched logs:', logs);
    const flattenLogs = logs.logs.map((log: { value: any }) => {
      return {
        ...log.value,
        bookmark: logs.bookmark,
      };
    });

    const formattedLogs = await Promise.all(
      flattenLogs.map(async (log: any) => {
        let relatedData = null;
        let payloadData = null;
        let payloadHash = null;
        const id = log.id.split('_')[1];

        if (log.event === 'obat_created' || log.event === 'obat_updated') {
          relatedData = await this.obatService.getObatById(parseInt(id));
          payloadData = {
            id: relatedData?.id_visit,
            obat: relatedData?.obat,
            jumlah_obat: relatedData?.jumlah_obat,
            aturan_pakai: relatedData?.aturan_pakai,
          };
          payloadHash = sha256(JSON.stringify(payloadData));
        } else if (
          log.event === 'rekam_medis_created' ||
          log.event === 'rekam_medis_updated'
        ) {
          relatedData = await this.rekamMedisService.getRekamMedisById(id);
          payloadData = {
            dokter_id: 123,
            visit_id: relatedData?.id_visit,
            anamnese: relatedData?.anamnese,
            jenis_kasus: relatedData?.jenis_kasus,
            tindak_lanjut: relatedData?.tindak_lanjut,
          };
          payloadHash = sha256(JSON.stringify(payloadData));
        } else if (
          log.event === 'tindakan_dokter_created' ||
          log.event === 'tindakan_dokter_updated'
        ) {
          relatedData = await this.tindakanDokterService.getTindakanDokterById(
            parseInt(id),
          );
          payloadData = {
            id_visit: relatedData?.id_visit,
            tindakan: relatedData?.tindakan,
            kategori_tindakan: relatedData?.kategori_tindakan,
            kelompok_tindakan: relatedData?.kelompok_tindakan,
          };
          payloadHash = sha256(JSON.stringify(payloadData));
        }

        return {
          ...log,
          isTampered: payloadHash === log.payload,
        };
      }),
    );

    return formattedLogs;
  }
}