import {DateRangeType, TimeUnit} from './types';

export enum PresetDateRange {
  Custom = 'custom',
  Today = 'today',
  Yesterday = 'yesterday',
  Last96Hours = 'last_96_hours',
  Last30Days = 'last_30_days',
  Last24Weeks = 'last_24_weeks',
  Last12Months = 'last_12_months',
}

export const TIME_UNIT_DISPLAY_NAMES: {[key in TimeUnit]: string} = {
  [TimeUnit.Hour]: `hours`,
  [TimeUnit.Day]: `days`,
  [TimeUnit.Week]: `weeks`,
  [TimeUnit.Month]: `months`,
  [TimeUnit.Quarter]: `quarters`,
  [TimeUnit.Year]: `years`,
};

export const DATE_RANGE_TYPE_DISPLAY_NAMES: {[key in DateRangeType]: string} = {
  [DateRangeType.Between]: `between`,
  [DateRangeType.On]: `on`,
  [DateRangeType.RelativeAfter]: `in the last`,
  [DateRangeType.RelativeBefore]: `before the last`,
  [DateRangeType.Since]: `since`,
};

export const START_OF_YESTERDAY = `$start_of_previous_day`;
export const END_OF_YESTERDAY = `$end_of_previous_day`;
export const START_OF_TODAY = `$start_of_current_day`;

export const PRESET_DATE_RANGE_DISPLAY_NAMES: {[key in PresetDateRange]: string} = {
  [PresetDateRange.Today]: `Current day`,
  [PresetDateRange.Yesterday]: `Previous day`,
  [PresetDateRange.Last96Hours]: `Last 96 hours`,
  [PresetDateRange.Last30Days]: `Last 30 days`,
  [PresetDateRange.Last24Weeks]: `Last 24 weeks`,
  [PresetDateRange.Last12Months]: `Last 12 months`,
  [PresetDateRange.Custom]: `Select a date range...`,
};

export const PRESET_DATE_RANGE_OPTIONS: Array<string> = [
  PresetDateRange.Today,
  PresetDateRange.Yesterday,
  PresetDateRange.Last96Hours,
  PresetDateRange.Last30Days,
  PresetDateRange.Last24Weeks,
  PresetDateRange.Last12Months,
  PresetDateRange.Custom,
];

export const PRESET_DATE_RANGE_TO_DATE_RANGE_PARAMS = {
  [PresetDateRange.Today]: {
    from: START_OF_TODAY,
    type: DateRangeType.Since,
  },
  [PresetDateRange.Yesterday]: {
    from: START_OF_YESTERDAY,
    to: END_OF_YESTERDAY,
    type: DateRangeType.Between,
  },
  [PresetDateRange.Last96Hours]: {
    type: DateRangeType.RelativeAfter,
    window: {
      unit: TimeUnit.Hour,
      value: 96,
    },
  },
  [PresetDateRange.Last30Days]: {
    type: DateRangeType.RelativeAfter,
    window: {
      unit: TimeUnit.Day,
      value: 30,
    },
  },
  [PresetDateRange.Last24Weeks]: {
    type: DateRangeType.RelativeAfter,
    window: {
      unit: TimeUnit.Week,
      value: 24,
    },
  },
  [PresetDateRange.Last12Months]: {
    type: DateRangeType.RelativeAfter,
    window: {
      unit: TimeUnit.Month,
      value: 12,
    },
  },
};