package com.aidex.web.controller.common;

import com.aidex.common.config.AiDexConfig;
import com.aidex.common.constant.CacheConstants;
import com.aidex.common.constant.Constants;
import com.aidex.common.core.domain.AjaxResult;
import com.aidex.common.core.redis.RedisCache;
import com.aidex.common.utils.sign.Base64;
import com.aidex.common.utils.uuid.IdUtils;
import com.aidex.framework.cache.ConfigUtils;
import com.google.code.kaptcha.Producer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 * 
 * @author ruoyi
 */
@RestController
public class CaptchaController
{
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;

    @Autowired
    private RedisCache redisCache;

    @Autowired(required = false)
    private AiDexConfig aidexConfig;

    /**
     * 生成验证码
     */
    @GetMapping("/captchaImage")
    public AjaxResult getCode(HttpServletResponse response) throws IOException
    {
        AjaxResult ajax = AjaxResult.success();
        boolean captchaOnOff = ConfigUtils.getConfigBooleanValueByKey("sys.captcha.onOff",true);
        ajax.put("captchaOnOff", captchaOnOff);
        if (!captchaOnOff)
        {
            return ajax;
        }
        try {
            // 保存验证码信息
            String uuid = IdUtils.simpleUUID();
            String verifyKey = CacheConstants.CAPTCHA_CODE_KEY + uuid;

            String capStr = null, code = null;
            BufferedImage image = null;

            // 生成验证码
            String captchaType = aidexConfig.getCaptchaType();
            // 生成验证码
            if ("math".equals(captchaType))
            {
                String capText = captchaProducerMath.createText();
                capStr = capText.substring(0, capText.lastIndexOf('@'));
                code = capText.substring(capText.lastIndexOf('@') + 1);
                image = captchaProducerMath.createImage(capStr);
            }
            else if ("char".equals(captchaType))
            {
                capStr = code = captchaProducer.createText();
                image = captchaProducer.createImage(capStr);
            }

            redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
            // 转换流信息写出
            FastByteArrayOutputStream os = new FastByteArrayOutputStream();
            try
            {
                ImageIO.write(image, "jpg", os);
            }
            catch (IOException e)
            {
                e.printStackTrace();
                return AjaxResult.error(e.getMessage());
            }

            ajax = AjaxResult.success();
            ajax.put("uuid", uuid);
            ajax.put("img", Base64.encode(os.toByteArray()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ajax;
    }
}
