import UnzonedRange from '../models/UnzonedRange'
import DateProfileGenerator from '../DateProfileGenerator'


export default class BasicViewDateProfileGenerator extends DateProfileGenerator {

  // Computes the date range that will be rendered.
  buildRenderRange(currentUnzonedRange, currentRangeUnit, isRangeAllDay) {
    let renderUnzonedRange = super.buildRenderRange(currentUnzonedRange, currentRangeUnit, isRangeAllDay) // an UnzonedRange
    let start = this.msToUtcMoment(renderUnzonedRange.startMs, isRangeAllDay)
    let end = this.msToUtcMoment(renderUnzonedRange.endMs, isRangeAllDay)

    // year and month views should be aligned with weeks. this is already done for week
    if (/^(year|month)$/.test(currentRangeUnit)) {
      start.startOf('week')

      // make end-of-week if not already
      if (end.weekday()) {
        end.add(1, 'week').startOf('week') // exclusively move backwards
      }
    }

    return new UnzonedRange(start, end)
  }

}