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package com.juick.command;

import com.juick.User;
import com.juick.formatters.PlainTextFormatter;
import com.juick.server.protocol.ProtocolListener;
import com.juick.service.MessagesService;
import com.juick.service.UserService;
import lombok.Getter;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

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

    private static final Pattern PATTERN = Pattern.compile("^@([^\\s\\n+]+)(\\+?)$", Pattern.CASE_INSENSITIVE);

    private final UserService userService;
    private final MessagesService messagesService;

    public ShowUserInfo(UserService userService, MessagesService messagesService) {
        this.userService = userService;
        this.messagesService = messagesService;
    }

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

    @Override
    public String help() {
        return "@username+ - Show user's info and last 10 messages (@username++ - second page, ..)";
    }

    @Override
    protected String execute(User sender, ProtocolListener protocolListener, String... arguments) {
        User blogUser = getUserService().getUserByName(arguments[0]);
        int page = arguments[1].length();
        if (blogUser.getUid() > 0) {
            List<Integer> mids = getMessagesService().getUserBlog(blogUser.getUid(), 0, page);
            List<com.juick.Message> messages = getMessagesService().getMessages(mids);
            return String.format("Last messages from @%s:\n%s", arguments[0],
                String.join("\n", messages.stream()
                    .map(PlainTextFormatter::formatPost).collect(Collectors.toList())));
        }
        return "User not found";
    }
}