import { Request, Response } from "express"
import { handleError, Log } from "./http"
import { resources } from "./resources"
import { buildArray, Filter, format, fromRequest, getParameters, initializeConfig, jsonResult, SearchConfig, SearchResult } from "./search"

export class SearchController<T, S extends Filter> {
  config?: SearchConfig
  csv?: boolean
  excluding?: string
  array?: string[]
  constructor(
    protected log: Log,
    public find: (s: S, limit: number, page?: number | string, fields?: string[]) => Promise<SearchResult<T>>,
    config?: SearchConfig | boolean,
    public dates?: string[],
    public numbers?: string[],
  ) {
    this.search = this.search.bind(this)
    if (config) {
      if (typeof config === "boolean") {
        this.csv = config
      } else {
        this.config = initializeConfig(config)
        if (this.config) {
          this.csv = this.config.csv
          this.excluding = this.config.excluding
        }
      }
    }
  }
  search(req: Request, res: Response) {
    const s = fromRequest<S>(req, buildArray(this.array, resources.fields, this.excluding))
    const l = getParameters(s)
    const s2 = format(s, this.dates, this.numbers)
    this.find(s2, l.limit, l.pageOrNextPageToken, l.fields)
      .then((result) => jsonResult(res, result, this.csv, l.fields, this.config))
      .catch((err) => handleError(err, res))
  }
}