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Cloudinary is a cloud service that offers a solution to a web application's entire image management pipeline. Upload images to the cloud. Automatically perform smart image resizing, cropping and conversion without installing any complex software. Integrate Facebook or Twitter profile image extraction in a snap, in any dimension and style to match your websiteâs graphics requirements. Images are seamlessly delivered through a fast CDN, and much much more. This Java library allows to easily integrate with Cloudinary in Java applications.

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package com.cloudinary.utils;

import com.cloudinary.Cloudinary;

import java.util.Arrays;
import java.util.List;

public class Analytics {
    private String sdkTokenQueryKey = "_a"; //sdkTokenQueryKey
    private String sdkQueryDelimiter = "=";
    public String algoVersion = "D";
    public String prodcut = "A";
    public String SDKCode = ""; // Java = G, Android = F
    public String SDKSemver = ""; // Calculate the SDK version .
    public String techVersion = ""; // Calculate the Java version.
    public String osType;
    public String osVersion;

    public String featureFlag = "0";

    public Analytics() {
        this("G", Cloudinary.VERSION,System.getProperty("java.version"), "Z", "0.0", "0");
    }
    public Analytics(String sdkCode, String sdkVersion, String techVersion, String osType, String osVersion, String featureFlag) {
        this.SDKCode = sdkCode;
        this.SDKSemver = sdkVersion;
        this.techVersion = techVersion;
        this.osType = osType;
        this.osVersion = osVersion;
        this.featureFlag = featureFlag;
    }

    public Analytics setSDKCode(String SDKCode) {
        this.SDKCode = SDKCode;
        return this;
    }

    public Analytics setSDKSemver(String SDKSemver) {
        this.SDKSemver = SDKSemver;
        return this;
    }

    public Analytics setTechVersion(String techVersion) {
        this.techVersion = techVersion;
        return this;
    }

    public Analytics setFeatureFlag(String flag) {
        this.featureFlag = flag;
        return this;
    }

    /**
     * Function turn analytics variables into viable query parameter.
     * @return query param with analytics values.
     */
    public String toQueryParam() {
        try {
            return sdkTokenQueryKey + sdkQueryDelimiter + getAlgorithmVersion() + prodcut + getSDKType() + getSDKVersion() + getTechVersion() + getOsType() + getOsVersion() + getSDKFeatureFlag();
        } catch (Exception e) {
            return sdkTokenQueryKey + sdkQueryDelimiter + "E";
        }
    }

    private String getTechVersion() throws Exception {
        String[] techVersionString = techVersion.split("_");
        String[] versions = techVersionString[0].split("\\.");
        return versionArrayToString(versions);
    }

    private String versionArrayToString(String[] versions) throws Exception {
        if (versions.length > 2) {
            versions = Arrays.copyOf(versions, versions.length - 1);
        }
        return getPaddedString(StringUtils.join(versions, "."));
    }

    private String versionArrayToOsString(String[] versions) throws  Exception {
        if (versions.length > 2) {
            versions = Arrays.copyOf(versions, versions.length - 1);
        }
        return getOsVersionString(StringUtils.join(versions, "."));
    }

    private String getOsType() {
        return (osType != null) ? osType : "Z"; //System.getProperty("os.name");
    }

    private String getOsVersion() throws Exception {
        return (osVersion != null) ? versionArrayToOsString(osVersion.split("\\.")) : versionArrayToString(System.getProperty("os.version").split("\\."));
    }

    private String getSDKType() {
        return SDKCode;
    }

    private String getAlgorithmVersion() {
        return algoVersion;
    }

    private String getSDKFeatureFlag() {
        return featureFlag;
    }

    private String getSDKVersion() throws Exception {
        return getPaddedString(SDKSemver);
    }

    private String getOsVersionString(String string) throws Exception {
        String[] parts = string.split("\\.");
        String result = "";
        for(int i = 0 ; i < parts.length ; i++) {
            int num = Integer.parseInt(parts[i]);
            String binaryString = Integer.toBinaryString(num);
            binaryString = StringUtils.padStart(binaryString, 6, '0');
            result = result + Base64Map.values.get(binaryString);
        }
        return result;
    }

    private String getPaddedString(String string) throws Exception {
        String paddedReversedSemver = "";
        int parts = string.split("\\.").length;
        int paddedStringLength = parts * 6;
        try {
            paddedReversedSemver = reverseVersion(string);
        } catch (Exception e) {
            throw new Exception("Error");
        }
        int num = Integer.parseInt(StringUtils.join(paddedReversedSemver.split("\\."),""));

        String paddedBinary = StringUtils.padStart(Integer.toBinaryString(num), paddedStringLength, '0');

        if (paddedBinary.length() % 6 != 0) {
            throw new Exception("Error");
        }

        String result = "";
        List resultList = StringUtils.getAllSubStringWithSize(paddedBinary,6);
        int i = 0;
        while (i < resultList.size()) {
            result = result + Base64Map.values.get(resultList.get(i));
            i++;
        }
        return result;
    }

    private String reverseVersion(String SDKSemver) throws Exception {
        if (SDKSemver.split("\\.").length < 2) {
            throw new Exception("invalid semVer, must have at least two segments");
        }
        String[] versionArray = SDKSemver.split("\\.");
        for (int i = 0 ; i < versionArray.length; i ++) {
            versionArray[i] = StringUtils.padStart(versionArray[i], 2, '0');
        }
        return StringUtils.join(StringUtils.reverseStringArray(versionArray), ".");
    }
}