import { downloadToCSV, downloadToPNG, type DownloadItem } from '../actions'
import type { ConfigProps } from '../loader/types'
import type { SpreadWidgetConfig, SpreadWidgetData } from './types'

/**
 * Creates download configuration for spread widgets, supporting PNG (screenshot) and CSV (min/max data) exports.
 *
 * @param props - Configuration with `refUI` reference for PNG export.
 * @returns Array of download items for use with the Download action.
 */
export function spreadDownloadConfig({
  refUI,
}: ConfigProps): DownloadItem<SpreadWidgetData>[] {
  return [
    {
      ...downloadToPNG,
      modifier: () => downloadToPNG.modifier(refUI),
    },
    {
      ...downloadToCSV,
      modifier: async (data) => {
        const rows = data.map((item) => [item.min, item.max])

        return downloadToCSV.modifier([['Min', 'Max'], ...rows])
      },
    },
  ]
}

/**
 * Returns the default configuration for spread (min/max value range) widgets.
 *
 * @returns Default spread widget config with empty series.
 */
export function spreadConfig(): SpreadWidgetConfig {
  return {
    series: [],
  }
}