import { Injectable } from '@nestjs/common'

import { ConfigRepository } from '../../../repositories'
import { Omie } from '../../../typings/global'

@Injectable()
export class OmieConfigService {
  private prefix = 'omie'
  private config: Omie

  constructor(private readonly configRepository: ConfigRepository) {}

  private convertType(value: string, type: string): any {
    switch (type) {
      case 'boolean':
        return value === 'true'
      case 'number':
        return +value
      default:
        return value
    }
  }

  private async loadOmieConfig(): Promise<void> {
    const omieConfig: Omie = {
      enable: false,
      enable_cancel: false,
      endpoint: 'https://api.omie.com.br/api/v1/',
      app_key: '',
      app_secret: '',
      checking_account_code: 0,
      category_code: '',
      parc_checking_account_code: 0,
      parc_category_code: '',
    }
    const config = await this.configRepository.getByPrefix(this.prefix)

    config.forEach(
      element =>
        (omieConfig[element.key.replace(`${this.prefix}_`, '')] = this.convertType(
          element.value,
          typeof omieConfig[element.key.replace(`${this.prefix}_`, '')],
        )),
    )

    this.config = omieConfig
  }

  async getConfig(): Promise<Omie> {
    if (!this.config) {
      await this.loadOmieConfig()
    }

    return this.config
  }
}