package com.ruoyi.common.utils;

import com.ruoyi.common.exception.ServiceException;

import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.net.URLEncoder;
import java.util.*;

public class RequestParamsUtil
{
    /**
     * http
     */
    public final static String HTTP = "http://";

    /**
     * 分隔符
     */
    public final static String SEPARATOR = ":";

    /**
     * 历史遥测
     */
    public final static String HISTORY_TELEMETRY = "/ipark-device-management/device/history-telemetry/list";

    /**
     * 预览url
     */
    public final static String PREVIEW_URLS = "/ipark-video/video/service/api/cameras/previewURLs";

    /**
     * 控制
     */
    public final static String CONTROLLING = "/ipark-video/video/service/api/ptzs/controlling";

    public final static String CAMERA_SEARCH = "/ipark-video/video/resource/api/camera/search";

    /**
     * 设备信息
     */
    public final static String DEVICE_INFO = "/ipark-device-management/device-external/devices/list";

    /**
     * 设备模型
     */
    public final static String DEVICE_MODEL = "/ipark-device-management/device-external/models/{id}";

    /**
     * 设备分页列表
     */
    public final static String DEVICE_PAGE_LIST = "/ipark-device-management/device-external/devices/page";

    /**
     * 查询简明设备列表
     */
    public final static String BRIEF_DEVICE = "/ipark-device-management/device/brief-device/list";

    /**
     * 查询简明设备列表
     */
    public final static String DEVICE_TYPE = "/ipark-device-management/device/brief-device-type/list";

    /**
     * 手动抓图
     */
    public final static String MANUAL_CAPTURE = "/api/video/v1/manualCapture";

    private RequestParamsUtil() {
    }

    public static String buildParams(Object param) {
        Map<String, Object> map = new HashMap<>();
        Field[] fields = param.getClass().getDeclaredFields();
        for (Field field : fields) {
            field.setAccessible(true);
            try {
                if (field.get(param) == null) {
                    continue;
                }
                map.put(field.getName(), field.get(param));
            } catch (Exception e) {
                throw new ServiceException("构建请求参数异常...");
            }
        }
        String params;
        try {
            params = createLinkStringByGet(map);
        } catch (UnsupportedEncodingException e) {
            throw new ServiceException("构建请求参数异常...");
        }
        return params;
    }



    private static String createLinkStringByGet(Map<String, Object> params) throws UnsupportedEncodingException {
        List<String> keys = new ArrayList<>(params.keySet());
        Collections.sort(keys);
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < keys.size(); i++) {
            String key = keys.get(i);
            Object value = params.get(key);
            if (i == keys.size() - 1) {
                stringBuilder.append(key).append("=").append(URLEncoder.encode(String.valueOf(value), "utf-8"));
            } else {
                stringBuilder.append(key).append("=").append(URLEncoder.encode(String.valueOf(value), "utf-8")).append("&");
            }

        }
        return stringBuilder.toString();
    }
}