com.dulanywebsite.sharedresources.entities.Group Maven / Gradle / Ivy

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package com.dulanywebsite.sharedresources.entities;

import com.dulanywebsite.sharedresources.exceptions.InvalidEntityException;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import org.springframework.cloud.gcp.data.datastore.core.mapping.Entity;

import java.util.List;

@EqualsAndHashCode(callSuper = true)
@Data
@NoArgsConstructor
@Entity(name = "groups")
public class Group extends DuWebEntity {
    private String groupName;

    private String groupManager;

    private Integer groupSize = Integer.MAX_VALUE;

    private String password;

    private Integer spotsFilled;

    private List groupMembers;

    @Override
    public void UpdateEntity(String propertyName, Object updateValue) throws NoSuchFieldException, IllegalAccessException {
        if (propertyName.equals("groupName") || propertyName.equals("groupMembers")) {
            throw new IllegalArgumentException("This property cannot be updated: " + propertyName);
        }
        getClass().getDeclaredField(propertyName).set(this, updateValue);
    }

    @Override
    public void AddItem(String propertyName, Object addValue) {
        if (!propertyName.equals("groupMembers")) {
            throw new IllegalArgumentException("This property cannot be added to");
        }
        groupMembers.add((Long) addValue);
    }

    public void addGroupMember(Long user) {
        if (!containsUser(user)) {
            groupMembers.add(user);
            spotsFilled++;
        }
    }

    private boolean containsUser(Long user) {
        boolean isFound = false;
        for (Long groupMember : groupMembers) {
            if (groupMember.equals(user)) {
                isFound = true;
                break;
            }
        }

        return isFound;
    }

    @Override
    protected void ValidateSub() throws InvalidEntityException {
        if (groupName == null || groupManager == null) {
            throw new InvalidEntityException(this.getClass().toString() + " class has a null value that shouldn't be null");
        }
        if (groupSize < 0) {
            throw new InvalidEntityException("Group size is not valid less than 0");
        }
        if (spotsFilled < 0) {
            throw new InvalidEntityException("Spots filled less than 0");
        }
        if (groupMembers.size() > groupSize) {
            throw new InvalidEntityException("Too many group members in the group");
        }
    }
}