wongjiahau/ttap-web

import { RawSlot } from "../../model/rawSlot";
import { BinaryPartition } from "../../permutator/partitionize";
import { IMasterState, MasterStateAction } from "../reducers/masterState";

export class ToggleLockSlot extends MasterStateAction {
  public constructor(
    private operation: "lock" | "unlock",
    private slot: RawSlot
  ) {
    super();
  }

  public TypeName(): string {
    return "lock slot : " + JSON.stringify(this.slot, null, 2);
  }

  protected GenerateNewState(state: IMasterState): IMasterState {
    const { UidsOfLockedSlot } = state.TimetableListState;
    switch (this.operation) {
      case "lock":
        UidsOfLockedSlot.push(this.slot.Uid);
        break;
      case "unlock":
        const index = UidsOfLockedSlot.indexOf(this.slot.Uid);
        if (index > -1) {
          UidsOfLockedSlot.splice(index, 1);
        } else {
          throw new Error("No locked slots have the uid of " + this.slot.Uid);
        }
        break;
    }
    return {
      ...state,
      TimetableListState: {
        ...state.TimetableListState,
        UidsOfLockedSlot,
      },
    };
  }
}