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package org.openl.rules.webstudio.service;

import java.util.Objects;

import org.springframework.core.env.PropertyResolver;

import org.openl.rules.security.standalone.dao.UserSettingDao;
import org.openl.rules.security.standalone.persistence.UserSetting;
import org.openl.util.StringUtils;

public class UserSettingManagementService {

    private final UserSettingDao userSettingDao;

    /**
     * Needed to retrieve default values
     */
    private final PropertyResolver propertyResolver;

    public UserSettingManagementService(UserSettingDao userSettingDao, PropertyResolver propertyResolver) {
        this.userSettingDao = userSettingDao;
        this.propertyResolver = propertyResolver;
    }

    public String getStringProperty(String login, String key) {
        UserSetting setting = userSettingDao.getProperty(login, key);
        if (setting == null) {
            // A value for specified user not found. Return default value.
            return propertyResolver.getProperty(key);
        }

        return setting.getSettingValue();
    }

    public boolean getBooleanProperty(String login, String key) {
        String value = getStringProperty(login, key);
        if (value == null) {
            throw new IllegalArgumentException(
                    "Cannot cast null to Boolean. The default value for the \" + key + \" property might be missing.");
        }

        return Boolean.parseBoolean(value);
    }

    public int getIntegerProperty(String login, String key) {
        String value = getStringProperty(login, key);
        if (value == null) {
            throw new IllegalArgumentException(
                    "Cannot cast null to int. Probably default value for property " + key + " is absent.");
        }

        return Integer.parseInt(value);
    }

    public void setProperty(String login, String key, String value) {
        String defVal = propertyResolver.getProperty(key);
        if (StringUtils.isBlank(defVal) && StringUtils.isBlank(value) || Objects.equals(defVal, value)) {
            userSettingDao.removeProperty(login, key);
        } else {
            userSettingDao.setProperty(login, key, value);
        }
    }

    public void setProperty(String login, String key, boolean value) {
        setProperty(login, key, Boolean.toString(value));
    }

    public void setProperty(String login, String key, int value) {
        setProperty(login, key, Integer.toString(value));
    }
}