import {pito} from 'pito';
import {MoveInType} from '../enums';

export const MoveInDefine = pito
    .Uobj('type')
    .case(MoveInType.DateSelect, {date: pito.Datetime()})
    .case(MoveInType.DateDiscussion, {})
    .case(MoveInType.Immediately, {})
    .end();

export type MoveInDefine = pito.Type<typeof MoveInDefine>;

export namespace MoveIn {
  // TODO :타입 체크
  export function wrap(
      type: MoveInType,
      date: Date | null | undefined,
  ): MoveInDefine {
      switch (type) {
      case MoveInType.DateSelect:
          if (date === undefined || date === null) {
              throw new Error(`MoveInType.DateSelect not allow undef or null date`);
          }
          return {
              type: MoveInType.DateSelect,
              date: date,
          };
      case MoveInType.DateDiscussion:
          return {
              type: MoveInType.DateDiscussion,
          };
      case MoveInType.Immediately:
          return {
              type: MoveInType.Immediately,
          };
      default:
          throw new Error(`unknown move in type ${type}` );
      }
  }
  export function unwrap(def: MoveInDefine): { type: MoveInType; date?: Date } {
      switch (def.type) {
      case MoveInType.DateSelect:
          return {
              type: MoveInType.DateSelect,
              date: new Date(def.date),
          };
      default:
          return {
              type: def.type,
          };
      }
  }
  export function unwrapUndef(def: MoveInDefine | undefined): {
    type?: MoveInType;
    date?: Date;
  } {
      if (def === undefined) {
          return {};
      }
      return unwrap(def);
  }
}