import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
import { DataSource } from 'typeorm';

@Injectable()
export class InternalOpdMedicationMedicationDoseService {
  constructor(private readonly connection: DataSource) {}
  async findall(medicine_category_id: number) {
    const [existingRecord] = await this.connection.query(
      `SELECT * FROM medicine_dosage WHERE medicine_category_id = ?`,
      [medicine_category_id],
    );

    if (!existingRecord || existingRecord.length === 0) {
      throw new HttpException(
        {
          status: process.env.IDENTITY,
          message: process.env.EXISTING_RECORD,
        },
        HttpStatus.NOT_FOUND,
      );
    }

    try {
      const medication_dose = await this.connection.query(
        `select medicine_dosage.id, medicine_dosage.dosage from medicine_dosage where medicine_dosage.medicine_category_id = ?`,
        [medicine_category_id],
      );
      return medication_dose;
    } catch (error) {
      throw new HttpException(
        {
          statusCode: HttpStatus.INTERNAL_SERVER_ERROR,
          message: process.env.ERROR_MESSAGE,
        },
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }
}