import * as _ from 'lodash'
import { Context } from '@nuxt/types/app'
import { AnyJson, DataProviderArgs, EnumChoice, EnumChoices, Provider } from '~/types/interfaces'
import BaseProvider from '~/services/dataProvider/provider/baseProvider'
import { QUERY_TYPE } from '~/types/enums'

class EnumProvider extends BaseProvider implements Provider {
  constructor (ctx: Context, args: DataProviderArgs) {
    super(ctx, args)
  }

  async invoke (data: AnyJson): Promise<any> {
    const enums:EnumChoices = []
    _.each(data.items, (item, key) => {
      const entry:EnumChoice = {
        value: key,
        label: this.ctx.app.i18n.t(item) as string
      }
      enums.push(entry)
    })
    return this.sortEnum(enums)
  }

  private sortEnum (enums:EnumChoices) {
    return enums.sort((a, b) => {
      if (a.label > b.label) { return 1 }
      if (a.label < b.label) { return -1 }
      return 0
    })
  }

  static support (args:DataProviderArgs): boolean {
    return args.type === QUERY_TYPE.ENUM
  }
}

export default EnumProvider