wongjiahau/ttap-web

const find = require("lodash.find");
const some = require("lodash.some");
const sortBy = require("lodash.sortby");
const uniq = require("lodash.uniq");
import { RawSlot } from "../model/rawSlot";
import { Subject } from "../model/subject";
import { IsParsable, IsReasonable } from "./parseRawSlotToSlot";

interface IKeyValue<T1, T2> {
  key: T1;
  value: T2;
}
export function ParseRawSlotToSubject(slots: RawSlot[]): Subject[] {
  const result = Array<Subject>();
  const dic = new Array<IKeyValue<string, RawSlot[]>>();
  slots
    .filter((x) => IsReasonable(x) && IsParsable(x))
    .forEach((s) => {
      if (!some(dic, { key: s.SubjectCode })) {
        dic.push({
          key: s.SubjectCode,
          value: new Array<RawSlot>(),
        });
      }
      find(dic, { key: s.SubjectCode }).value.push(s);
    });

  dic.forEach((item) => {
    const slot = item.value[0];
    const allSlotOfThisSubject = item.value;
    const slotIds = Array<number>();
    const slotNumbers = Array<string>();
    allSlotOfThisSubject.forEach((s) => {
      slotIds.push(s.Uid);
      slotNumbers.push(s.Number);
    });
    result.push(
      new Subject(
        slot.SubjectName,
        slot.SubjectCode,
        slotIds,
        uniq(slotNumbers)
      )
    );
  });
  return sortBy(result, [(o: Subject) => o.Name]);
}