package com.sjz.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * 配置工具类
 *
 * @author sjz
 */
public class ConfigUtil {

    private static final Properties properties = new Properties();

    static {
        try (InputStream is = ConfigUtil.class.getClassLoader().getResourceAsStream("application.properties")) {
            if (is != null) {
                properties.load(is);
            }
        } catch (IOException e) {
            throw new RuntimeException("Failed to load application.properties", e);
        }
    }

    /**
     * 获取配置值
     */
    public static String getProperty(String key) {
        return properties.getProperty(key);
    }

    /**
     * 获取配置值，如果不存在则返回默认值
     */
    public static String getProperty(String key, String defaultValue) {
        return properties.getProperty(key, defaultValue);
    }

    /**
     * 获取整数配置值
     */
    public static int getIntProperty(String key, int defaultValue) {
        String value = getProperty(key);
        if (value == null) {
            return defaultValue;
        }
        try {
            return Integer.parseInt(value);
        } catch (NumberFormatException e) {
            return defaultValue;
        }
    }

    /**
     * 获取布尔配置值
     */
    public static boolean getBooleanProperty(String key, boolean defaultValue) {
        String value = getProperty(key);
        if (value == null) {
            return defaultValue;
        }
        return Boolean.parseBoolean(value);
    }

    /**
     * 获取长整数配置值
     */
    public static long getLongProperty(String key, long defaultValue) {
        String value = getProperty(key);
        if (value == null) {
            return defaultValue;
        }
        try {
            return Long.parseLong(value);
        } catch (NumberFormatException e) {
            return defaultValue;
        }
    }

    /**
     * 检查必要的配置是否存在
     */
    public static void validateRequiredProperties(String... requiredKeys) {
        for (String key : requiredKeys) {
            String value = getProperty(key);
            if (value == null || value.trim().isEmpty()) {
                throw new RuntimeException("Required property '" + key + "' is missing or empty");
            }
        }
    }

    /**
     * 获取Tushare Token
     */
    public static String getTushareToken() {
        String token = getProperty("tushare.token");
        if (token == null || token.equals("your_tushare_token_here")) {
            throw new RuntimeException("Tushare token is not configured properly");
        }
        return token;
    }

    /**
     * 获取数据库URL
     */
    public static String getDatabaseUrl() {
        return getProperty("db.url");
    }

    /**
     * 获取数据库用户名
     */
    public static String getDatabaseUsername() {
        return getProperty("db.username");
    }

    /**
     * 获取数据库密码
     */
    public static String getDatabasePassword() {
        String password = getProperty("db.password");
        if (password == null || password.equals("your_password_here")) {
            throw new RuntimeException("Database password is not configured properly");
        }
        return password;
    }
}