package com.juick.command;

import com.juick.Tag;
import com.juick.User;
import com.juick.server.protocol.ProtocolListener;
import com.juick.service.SubscriptionService;
import com.juick.service.TagService;
import lombok.Getter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.regex.Pattern;

/**
 * @author ma1uta
 */
@Component
@Getter
public class SubscribeTag extends MultiArgsCommand {

    private static final Pattern PATTERN = Pattern.compile("^([su])\\s+\\*(\\S+)$", Pattern.CASE_INSENSITIVE);

    private final TagService tagService;
    private final SubscriptionService subscriptionService;

    @Autowired
    public SubscribeTag(TagService tagService, SubscriptionService subscriptionService) {
        this.tagService = tagService;
        this.subscriptionService = subscriptionService;
    }

    @Override
    public Pattern pattern() {
        return PATTERN;
    }

    @Override
    public String help() {
        return "S *tag - subscribe to tag\nU *tag - unsubscribe from tag";
    }

    @Override
    protected String execute(User sender, ProtocolListener protocolListener, String... arguments) {
        boolean subscribe = arguments[0].equalsIgnoreCase("s");
        Tag tag = getTagService().getTag(arguments[1], true);
        if (subscribe) {
            if (getSubscriptionService().subscribeTag(sender, tag)) {
                return "Subscribed";
            }
        } else {
            if (getSubscriptionService().unSubscribeTag(sender, tag)) {
                return "Unsubscribed from " + tag.getName();
            }
            return "You was not subscribed to " + tag.getName();
        }
        return "Error";
    }
}