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import org.springframework.stereotype.Service;
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import org.springframework.stereotype.Service;
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import java.io.File;
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import java.io.File;
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import java.util.Base64;
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import java.util.Base64;
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import java.util.HashMap;
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import java.util.HashMap;
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import java.util.regex.Pattern;
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@Service
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@Service
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public class CaptchaService {
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public class CaptchaService {
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	@Autowired
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	@Autowired
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	RestClient restClient;
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	RestClient restClient;
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	private static final Logger LOGGER = LogManager.getLogger(CaptchaService.class);
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	private static final Logger LOGGER = LogManager.getLogger(CaptchaService.class);
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	/** The 31 classes the solver model can emit: 123456789ABCDEFGHKMNPQRSTUVWXYZ */
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	private static final Pattern CAPTCHA_CODE = Pattern.compile("^[1-9A-HK-NP-Z]{4}$");
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	/**
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	 * @return the 4-character captcha code, or null if the solver did not return
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	 *         a usable one. Callers must skip the IMEI when this is null rather
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	 *         than submitting the value to Vivo.
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	 */
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	public String getCaptchaCode(String filePath) throws Exception {
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	public String getCaptchaCode(String filePath) throws Exception {
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		byte[] fileContent = FileUtils.readFileToByteArray(new File(filePath));
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		byte[] fileContent = FileUtils.readFileToByteArray(new File(filePath));
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		String encodedString = Base64.getEncoder().encodeToString(fileContent);
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		String encodedString = Base64.getEncoder().encodeToString(fileContent);
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		System.out.println(encodedString);
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		Base64Image base64Image = new Base64Image();
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		Base64Image base64Image = new Base64Image();
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		base64Image.setImage(encodedString);
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		base64Image.setImage(encodedString);
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		return restClient.postJson("http://45.79.121.178/uploader", base64Image, new HashMap<>());
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		String response = restClient.postJson("http://45.79.121.178/uploader", base64Image, new HashMap<>());
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		// RestClient returns the body for ANY status, so an nginx 502 page or a
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		// solver error payload arrives here looking like a normal result. Anything
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		// that is not a real code is rejected instead of being sent to Vivo.
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		if (response == null || !CAPTCHA_CODE.matcher(response.trim()).matches()) {
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			LOGGER.error("Captcha solver returned an unusable response: {}",
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					response == null ? "null" : response.substring(0, Math.min(response.length(), 200)));
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			return null;
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		}
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		return response.trim();
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	}
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	}
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	class Base64Image {
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	class Base64Image {
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		private String image;
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		private String image;
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