import { EntityState, EntityAdapter, createEntityAdapter } from '@ngrx/entity';
import { BomItem } from './bom-item.model';
import { BomItemActions, BomItemActionTypes } from './bom-item.actions';

export interface State extends EntityState<BomItem> {
  // additional entities state properties
}

export const adapter: EntityAdapter<BomItem> = createEntityAdapter<BomItem>();

export const initialState: State = adapter.getInitialState({
  // additional entity state properties
});

export function reducer(state = initialState, action: BomItemActions): State {
  switch (action.type) {
    case BomItemActionTypes.AddBomItem: {
      return adapter.addOne(action.payload.bom, state);
    }

    case BomItemActionTypes.UpsertBomItem: {
      return adapter.upsertOne(action.payload.bom, state);
    }

    case BomItemActionTypes.AddBomItems: {
      return adapter.addMany(action.payload.boms, state);
    }

    case BomItemActionTypes.UpsertBomItems: {
      return adapter.upsertMany(action.payload.boms, state);
    }

    case BomItemActionTypes.UpdateBomItem: {
      return adapter.updateOne(action.payload.bom, state);
    }

    case BomItemActionTypes.UpdateBomItems: {
      return adapter.updateMany(action.payload.boms, state);
    }

    case BomItemActionTypes.DeleteBomItem: {
      return adapter.removeOne(action.payload.id, state);
    }

    case BomItemActionTypes.DeleteBomItems: {
      return adapter.removeMany(action.payload.ids, state);
    }

    case BomItemActionTypes.LoadBomItems: {
      return adapter.setAll(action.payload.boms, state);
    }

    case BomItemActionTypes.ClearBomItems: {
      return adapter.removeAll(state);
    }

    default: {
      return state;
    }
  }
}

export const {
  selectIds,
  selectEntities,
  selectAll,
  selectTotal
} = adapter.getSelectors();