src/main/java/com/juick/server/api/SystemActivity.java


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package com.juick.server.api;

import com.juick.Message;
import com.juick.User;

import java.util.Collections;
import java.util.List;

public class SystemActivity {
    public static SystemActivity like(User from, Message message, List<User> subscribers) {
        var like = new SystemActivity();
        like.setType(ActivityType.like);
        like.setFrom(from);
        like.setMessage(message);
        like.setTo(subscribers);
        return like;
    }

    public static SystemActivity message(User from, Message message, List<User> subscribers) {
        var msg = new SystemActivity();
        msg.setType(ActivityType.message);
        msg.setFrom(from);
        msg.setMessage(message);
        msg.setTo(subscribers);
        return msg;
    }

    public static SystemActivity read(User from, Message message) {
        var read = new SystemActivity();
        read.setType(ActivityType.message);
        read.setFrom(from);
        read.setTo(Collections.emptyList());
        var msg = new Message();
        msg.setMid(message.getMid());
        msg.setUser(from);
        msg.setService(true);
        msg.setUnread(false);
        read.setMessage(msg);
        return read;
    }

    public static SystemActivity follow(User from, List<User> to) {
        var follow = new SystemActivity();
        follow.setFrom(from);
        follow.setTo(to);
        return follow;
    }

    public enum ActivityType {
        message,
        like,
        follow
    }

    private ActivityType type;
    private User from;
    private List<User> to;
    private Message message;

    public ActivityType getType() {
        return type;
    }

    public void setType(ActivityType type) {
        this.type = type;
    }

    public User getFrom() {
        return from;
    }

    public void setFrom(User from) {
        this.from = from;
    }

    public List<User> getTo() {
        return to;
    }

    public void setTo(List<User> to) {
        this.to = to;
    }

    public Message getMessage() {
        return message;
    }

    public void setMessage(Message message) {
        this.message = message;
    }
}