import type { Query as PiniaOrmQuery } from 'pinia-orm'
import type { ApiFilter, OrderBy } from '~/types/data'
import type ApiResource from '~/models/ApiResource'

/**
 * A Query to filter and sort ApiResources.
 * Pass it to the `fetchCollection` method of the EntityManager to apply these filters to both
 * API fetch and PiniaOrm query, which allow to maintain this collection reactivity.
 */
export default class Query {
  protected filters: Array<ApiFilter> = []
  protected orderBy: Array<OrderBy> = []

  /**
   * Add an ApiFilter to the query
   *
   * @param filter
   */
  public addWhere(filter: ApiFilter) {
    this.filters.push(filter)
  }

  /**
   * Add an OrderBy directive to the query
   *
   * @param field
   * @param direction
   */
  public addOrderBy(field: string, direction: 'asc' | 'desc' = 'asc') {
    const orderBy: OrderBy = { field, direction }

    this.orderBy.push(orderBy)
  }

  /**
   * Returns the URL's query in the Api Platform format.
   *
   * @see https://api-platform.com/docs/core/filters/
   */
  public getUrlQuery(): string {
    const queryParts: string[] = []

    this.filters.forEach((filter) => {
      const queryPart = filter.getApiQueryPart()
      queryParts.push(queryPart)
    })
    // console.log(queryParts)
    return queryParts.join('&')
  }

  /**
   * Apply this query to the pinia orm query and return it.
   *
   * @see https://pinia-orm.codedredd.de/guide/repository/retrieving-data
   * @param query
   */
  public applyToPiniaOrmQuery(
    query: PiniaOrmQuery<ApiResource>,
  ): PiniaOrmQuery<ApiResource> {
    this.filters.forEach((filter) => {
      query = filter.applyToPiniaOrmQuery(query)
    })
    // console.log(query)
    return query
  }
}