import {
  Injectable,
  BadRequestException,
  UnauthorizedException,
  NotAcceptableException,
} from '@nestjs/common';
import { userSelectValidator } from '@/src/auth/select/dtoValidator';
import { RedisHandlers } from '@/src/utils/auth/redis_handlers';
import {
  EmployeeTokenSchema,
  OccupantTokenSchema,
  TokenDictInterface,
  UserType,
} from '@/src/types/auth/token';
import { PrismaService } from '@/src/prisma.service';

@Injectable()
export class SelectService {
  constructor(
    private readonly redis: RedisHandlers,
    private readonly prisma: PrismaService,
  ) {}
  async run(dto: userSelectValidator, req: Request) {
    const accessObject = await this.redis.getLoginFromRedis(req);
    if (!accessObject) {
      throw new UnauthorizedException(
        'Authorization failed. Please login to continue',
      );
    }
    const accessToken = accessObject.key.split(':')[1];
    const existingSelectToken = await this.redis.callExistingSelectToken(
      accessObject.value.users.uu_id,
      dto.uuid,
    );
    if (existingSelectToken) {
      return {
        message: 'Select successful',
        token: existingSelectToken,
      };
    }
    const userType = accessObject.value.users.user_type;
    if (userType === 'employee') {
      const employee = await this.prisma.employees.findFirstOrThrow({
        where: { uu_id: dto.uuid },
        omit: {
          id: true,
        },
      });
      const staff = await this.prisma.staff.findFirstOrThrow({
        where: { id: employee.staff_id },
        omit: {
          id: true,
        },
      });
      const duties = await this.prisma.duties.findFirstOrThrow({
        where: { id: staff.duties_id },
        omit: {
          id: true,
        },
      });
      const department = await this.prisma.departments.findFirstOrThrow({
        where: { id: duties.department_id },
        omit: {
          id: true,
        },
      });
      const duty = await this.prisma.duty.findFirstOrThrow({
        where: { id: duties.duties_id },
        omit: {
          id: true,
        },
      });
      const company = await this.prisma.companies.findFirstOrThrow({
        where: { id: duties.company_id },
        omit: {
          id: true,
        },
      });

      const employeeToken = EmployeeTokenSchema.parse({
        company: company,
        department: department,
        duty: duty,
        employee: employee,
        staff: staff,
        menu: null,
        pages: null,
        selection: await this.prisma.employees.findFirstOrThrow({
          where: { uu_id: dto.uuid },
          select: {
            uu_id: true,
            staff: {
              select: {
                uu_id: true,
                staff_code: true,
                function_retriever: true,
                duties: {
                  select: {
                    uu_id: true,
                    departments: {
                      select: {
                        uu_id: true,
                        department_code: true,
                        department_name: true,
                        companies: {
                          select: {
                            uu_id: true,
                            formal_name: true,
                            public_name: true,
                            addresses: {
                              select: {
                                comment_address: true,
                              },
                            },
                          },
                        },
                      },
                    },
                  },
                },
              },
            },
          },
        }),
        functionsRetriever: staff.function_retriever,
        kind: UserType.employee,
      });

      const tokenSelect = await this.redis.setSelectToRedis(
        accessToken,
        employeeToken,
        accessObject.value.users.uu_id,
        dto.uuid,
      );

      return {
        message: 'Select successful',
        token: tokenSelect,
      };
    } else if (userType === 'occupant') {
      const livingSpace = await this.prisma.build_living_space.findFirstOrThrow(
        {
          where: { uu_id: dto.uuid },
          omit: {
            id: true,
            person_id: true,
            build_parts_id: true,
            occupant_type_id: true,
            ref_id: true,
            replication_id: true,
            cryp_uu_id: true,
          },
        },
      );
      const occupantType = await this.prisma.occupant_types.findFirstOrThrow({
        where: { uu_id: livingSpace.occupant_type_uu_id },
        omit: {
          id: true,
          cryp_uu_id: true,
          ref_id: true,
          replication_id: true,
        },
      });
      const part = await this.prisma.build_parts.findFirstOrThrow({
        where: { uu_id: livingSpace.build_parts_uu_id },
        omit: {
          id: true,
          cryp_uu_id: true,
          ref_id: true,
          replication_id: true,
        },
      });
      const build = await this.prisma.build.findFirstOrThrow({
        where: { uu_id: part.build_uu_id },
        omit: {
          id: true,
          cryp_uu_id: true,
          ref_id: true,
          replication_id: true,
        },
      });
      const company = await this.prisma.companies.findFirstOrThrow({
        where: { uu_id: accessObject.value.users.related_company },
        omit: {
          id: true,
          cryp_uu_id: true,
          ref_id: true,
          replication_id: true,
        },
      });
      const occupantToken = OccupantTokenSchema.parse({
        livingSpace: livingSpace,
        occupant: occupantType,
        build: build,
        part: part,
        company: company,
        menu: null,
        pages: null,
        config: null,
        caches: null,
        selection: await this.prisma.build_living_space.findFirstOrThrow({
          where: { uu_id: dto.uuid },
          select: {
            uu_id: true,
            occupant_types: {
              select: {
                uu_id: true,
                occupant_code: true,
                occupant_type: true,
                function_retriever: true,
              },
            },
            build_parts: {
              select: {
                uu_id: true,
                part_code: true,
                part_no: true,
                part_level: true,
                human_livable: true,
                api_enum_dropdown_build_parts_part_type_idToapi_enum_dropdown: {
                  select: {
                    uu_id: true,
                    enum_class: true,
                    value: true,
                  },
                },
                build: {
                  select: {
                    uu_id: true,
                    build_name: true,
                  },
                },
              },
            },
          },
        }),
        functionsRetriever: occupantType.function_retriever,
        kind: UserType.occupant,
      });
      const tokenSelect = await this.redis.setSelectToRedis(
        accessToken,
        occupantToken,
        accessObject.value.users.uu_id,
        dto.uuid,
      );
      return {
        message: 'Select successful',
        token: tokenSelect,
      };
    } else {
      throw new NotAcceptableException('Invalid user type');
    }
  }
}