import type { Query as PiniaOrmQuery } from 'pinia-orm'
import type { Ref } from 'vue'
import type { ApiFilter } from '~/types/data'
import type ApiResource from '~/models/ApiResource'
import { TIME_STRATEGY } from '~/types/enum/data'
import AbstractFilter from '~/services/data/Filters/AbstractFilter'
import RefUtils from '~/services/utils/refUtils'
import DateUtils from '~/services/utils/dateUtils'

export default class TimeFilter extends AbstractFilter implements ApiFilter {
  field: string
  filterValue: Ref<string | null>
  mode: TIME_STRATEGY

  /**
   * @param field
   * @param value
   * @param mode The 'time' strategy (after, before, strictly_after, strictly_before).
   *             This strategy is defined API-side, but PiniaOrm needs to know how to handle this.
   *             @see https://api-platform.com/docs/core/filters/
   * @param reactiveFilter
   */
  constructor(
    field: string,
    value: Ref<string | null>,
    mode: TIME_STRATEGY,
    reactiveFilter: boolean = false,
  ) {
    super(reactiveFilter)
    this.field = field
    this.filterValue = value
    this.mode = mode
  }

  protected search(value: string, filterValue: Ref<string | null>): boolean {
    if (filterValue.value === null) {
      return false
    }

    switch (this.mode) {
      case TIME_STRATEGY.BEFORE:
        return DateUtils.isBefore(value, filterValue.value, false)
      case TIME_STRATEGY.AFTER:
        return DateUtils.isBefore(filterValue.value, value, false)
      case TIME_STRATEGY.STRICTLY_BEFORE:
        return DateUtils.isBefore(value, filterValue.value)
      case TIME_STRATEGY.STRICTLY_AFTER:
        return DateUtils.isBefore(filterValue.value, value)
      default:
        throw new Error('Unrecognized mode')
    }
  }

  public applyToPiniaOrmQuery<T extends ApiResource>(
    query: PiniaOrmQuery<T>,
  ): PiniaOrmQuery<T> {
    const filterValue = RefUtils.castToRef(
      this.filterValue,
      this.reactiveFilter,
    )

    if (!filterValue.value) {
      return query
    }

    return query.where(this.field, (value: string) =>
      this.search(value, filterValue),
    )
  }

  public getApiQueryPart(): string {
    if (!this.filterValue.value) {
      return ''
    }

    return `${this.field}[${this.mode}]=${this.filterValue.value}`
  }
}