package cc.mrbird.febs.common.service;

import cc.mrbird.febs.common.entity.FebsConstant;
import cc.mrbird.febs.common.entity.ImageType;
import cc.mrbird.febs.common.exception.FebsException;
import cc.mrbird.febs.common.properties.FebsProperties;
import cc.mrbird.febs.common.properties.ValidateCodeProperties;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import com.wf.captcha.GifCaptcha;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import lombok.RequiredArgsConstructor;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.*;
import java.util.stream.Collectors;

/**
 * 验证码服务
 *
 * @author MrBird
 */
@Service
@RequiredArgsConstructor
public class ValidateCodeService {

    private final RedisService redisService;
    private final FebsProperties properties;

    public void create(HttpServletRequest request, HttpServletResponse response) throws IOException {
        HttpSession session = request.getSession();
        String key = session.getId();
        ValidateCodeProperties code = properties.getCode();
        setHeader(response, code.getType());

        Captcha captcha = createCaptcha(code);
        redisService.set(FebsConstant.CODE_PREFIX  + key, StringUtils.lowerCase(captcha.text()), code.getTime());
        captcha.out(response.getOutputStream());
    }

    
    public void check(String key, String value) throws FebsException {
        Object codeInRedis = redisService.get(FebsConstant.CODE_PREFIX + key);
        if (StringUtils.isBlank(value)) {
            throw new FebsException("请输入验证码");
        }
        if (codeInRedis == null) {
            throw new FebsException("验证码已过期");
        }
        if (!StringUtils.equalsIgnoreCase(value, String.valueOf(codeInRedis))) {
            throw new FebsException("验证码不正确");
        }
    }

    private Captcha createCaptcha(ValidateCodeProperties code) {
        Captcha captcha;
        if (StringUtils.equalsIgnoreCase(code.getType(), ImageType.GIF)) {
            captcha = new GifCaptcha(code.getWidth(), code.getHeight(), code.getLength());
        } else {
            captcha = new SpecCaptcha(code.getWidth(), code.getHeight(), code.getLength());
        }
        captcha.setCharType(code.getCharType());
        return captcha;
    }

    private void setHeader(HttpServletResponse response, String type) {
        if (StringUtils.equalsIgnoreCase(type, ImageType.GIF)) {
            response.setContentType(MediaType.IMAGE_GIF_VALUE);
        } else {
            response.setContentType(MediaType.IMAGE_PNG_VALUE);
        }
        response.setHeader(HttpHeaders.PRAGMA, "No-cache");
        response.setHeader(HttpHeaders.CACHE_CONTROL, "No-cache");
        response.setDateHeader(HttpHeaders.EXPIRES, 0L);
    }


//    public static void main(String[] args) {
//        List<Integer> lists = new ArrayList<>();
////        lists.add(1);
////        lists.add(2);
////        lists.add(3);
////        lists.add(4);
//        System.out.println(lists);
//        List<Integer> collect = lists
//                .stream()
//                .filter(list -> 1 == list)
//                .collect(Collectors.toList());
//
//        System.out.println(collect);
//
//        List<Integer> collect1 = lists.stream().filter(
//                list -> {
//                    if (1 != list) {
//                        return true;
//                    }
//                    return false;
//                }
//        ).collect(Collectors.toList());
//
//        System.out.println(collect1);
//
//
//        List<Integer> list2 = new ArrayList<>();
//        Random rd = new Random();
//        for (int i = 0; i < 100; i++) {
//            list2.add(rd.nextInt(101));// 随机产生一个[0,100]的数字
//        }
//        System.out.println(list2);
//        // 流处理, 进行数据处理
//        DoubleSummaryStatistics ds = list2.stream().collect(Collectors.summarizingDouble(e -> e));
//        Map<Boolean, List<Integer>> collect2 = list2.stream().collect(Collectors.partitioningBy(e -> e >= 60));
//        Map<Boolean, List<Integer>> collect3 = list2.stream().collect(Collectors.partitioningBy(e -> e >= 80));
//        Map<Boolean, List<Integer>> collect4 = list2.stream().collect(Collectors.partitioningBy(e -> e >= 200));
//        System.out.println("平均分"+ds.getAverage());
//        System.out.println("最高分"+ds.getMax());
//        System.out.println("最低分"+ds.getMin());
//        System.out.println("总分"+ds.getSum());
//        System.out.println("人数"+ds.getCount());
//        System.out.println("大于60分"+collect2.toString());
//        System.out.println("大于80分"+collect3.get(true).toString());
//        System.out.println("大于90分"+collect4.get(true).toString());
//        JSONObject jsonObject = JSONUtil.parseObj(collect2);
//        System.out.println(jsonObject);
//
//    }
}