package com.se.simu.utils;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.google.common.io.Resources;
import com.se.simu.domain.dto.GridDto;
import org.apache.commons.codec.binary.Base64;
import org.springframework.http.*;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.util.UriUtils;

import javax.crypto.Cipher;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.security.KeyFactory;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.List;

/**
 * 实体库请求
 */
public class EntityLibraryUtils {
    /**
     * 获取加密公钥
     *
     * @return 共钥
     */
    public static String getPublicKey() {
        JSONObject jsonObject = new JSONObject();
        String json = jsonObject.toJSONString();
        // 发送JSON格式的POST请求
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        HttpEntity<String> request = new HttpEntity<>(json, headers);
        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity<String> responseEntity = restTemplate.postForEntity("http://106.120.22.26:8024/geo-service/setting/publickey", request, String.class);
        if (responseEntity.getStatusCode().is2xxSuccessful()) {
            String body = responseEntity.getBody();
            return JSONObject.parseObject(body).getString("data");
        }
        return null;
    }

    public static String encrypt(String str, String publicKey) throws Exception {
        //Base64编码的公钥
        byte[] decoded = Base64.decodeBase64(publicKey);
        RSAPublicKey pubKey = (RSAPublicKey) KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(decoded));
        // RSA加密:RSA/ECB/NoPadding
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, pubKey);
        String outstr = Base64.encodeBase64String(cipher.doFinal(str.getBytes(StandardCharsets.UTF_8)));
        return outstr;
    }

    public static String decrypt(String str, String privateKey) throws Exception {
        if (str == null || "".equals(str)) {
            return str;
        }
        //64位解码加密后的字符串
        byte[] inputByte = Base64.decodeBase64(str.getBytes(StandardCharsets.UTF_8));
        //Base64编码的私钥
        byte[] decoded = Base64.decodeBase64(privateKey);
        RSAPrivateKey priKey = (RSAPrivateKey) KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(decoded));
        //RSA解密:RSA/ECB/NoPadding
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.DECRYPT_MODE, priKey);
        String outstn = new String(cipher.doFinal(inputByte), StandardCharsets.UTF_8);
        return outstn;
    }

    public static void main(String[] args) throws Exception {
        String publickey = getPublicKey();
        System.out.println("公钥=" + publickey);
        String en = encrypt("id in ('46235','49876')", publickey);
        System.out.println("加密字符串=" + en);
        String encode = UriUtils.encode(en, StandardCharsets.UTF_8);
        System.out.println("encode字符串=" + encode);
        String decode = UriUtils.decode(encode, StandardCharsets.UTF_8);
        System.out.println("decode字符串=" + decode);
        System.out.println("解密字符串=" + decrypt(decode, "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"));
    }

    /**
     * 管线列表
     *
     * @param dtos 四个坐标点
     * @return 框选内部管线
     */
    public static JSONArray getPointInfo(List<GridDto> dtos) {
        JSONArray paramArray = new JSONArray();
        for (GridDto dto : dtos
        ) {
            paramArray.add(ProjectionToGeographicUtil.get4548Point(dto.getLon(), dto.getLat()));
        }
        paramArray.add(ProjectionToGeographicUtil.get4548Point(dtos.get(0).getLon(), dtos.get(0).getLat()));
        JSONObject jsonObject = getModule("layerQueryParams.json");
        jsonObject.getJSONObject("geometry").getJSONArray("coordinates").add(paramArray);
        RestTemplate restTemplate = new RestTemplate();
        // 发送JSON格式的POST请求
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        String json = jsonObject.toJSONString();
        HttpEntity<String> request = new HttpEntity<>(json, headers);
        ResponseEntity<String> responseEntity = restTemplate.postForEntity("http://106.120.22.26:8024/geo-service/entitydbdata/layer/query", request, String.class);
        if (responseEntity.getStatusCode().is2xxSuccessful()) {
            String body = responseEntity.getBody();
            return JSONObject.parseObject(body).getJSONObject("data").getJSONArray("items");
        }
        return null;
    }

    /**
     * 管线列表详情
     *
     * @param param 查询参数
     * @return 参数内详情
     */
    public static JSONArray getPointDetail(String param) {
        JSONObject jsonObject = getModule("layerQueryDetailParams.json");
        jsonObject.put("where", param);
        RestTemplate restTemplate = new RestTemplate();
        // 发送JSON格式的POST请求
        StringHttpMessageConverter converter = new StringHttpMessageConverter(StandardCharsets.UTF_8);
        converter.setSupportedMediaTypes(MediaType.parseMediaTypes("text/plain;charset=UTF-8"));
        restTemplate.getMessageConverters().add(0, converter);
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        String json = jsonObject.toJSONString();
        HttpEntity<String> request = new HttpEntity<>(json, headers);
        ResponseEntity<String> responseEntity = restTemplate.exchange("http://106.120.22.26:8024/geo-service/entitydbdata/layer/query", HttpMethod.POST, request, String.class);
        if (responseEntity.getStatusCode().is2xxSuccessful()) {
            String body = responseEntity.getBody();
            return JSONObject.parseObject(body).getJSONArray("features");
        }
        return null;
    }

    /**
     * 获取请求json
     *
     * @param moduleName json名
     * @return json内容
     */
    private static JSONObject getModule(String moduleName) {
        JSONObject jsonObject = new JSONObject();
        try {
            URL resource = Resources.getResource(moduleName);
            String fileContent = Resources.toString(resource, StandardCharsets.UTF_8);
            jsonObject = JSONObject.parseObject(fileContent);
            System.out.println(fileContent);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return jsonObject;
    }
}