binancej/src/main/java/com/sigmaflare/binancej/Helpers.java

package com.sigmaflare.binancej;


import com.codepoetics.ambivalence.LeftProjection;
import com.codepoetics.ambivalence.RightProjection;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;

import java.util.function.Function;

public final class Helpers {
    private Helpers() {
    }

    /**
     * Checks to insure the status code is ok.
     *
     * @param statusCode The status code
     * @return True of the status code is acceptable (200-399), and false otherwise
     */
    public static boolean statusCodeIsOk(int statusCode) {
        return statusCode >= 200 && statusCode < 400;
    }


    /**
     * Builds a configured HttpGet
     *
     * @param url    The full URL to GET to
     * @param apiKey The API key
     * @return A configured HttpGet object
     */
    public static HttpGet getBuilder(String url, String apiKey) {
        HttpGet httpGet = new HttpGet(url);
        httpGet.setHeader("X-MBX-APIKEY", apiKey);
        return httpGet;
    }

    /**
     * Builds a configured HttpPost
     *
     * @param url    The full URL to POST to
     * @param apiKey The API key
     * @return A configured HttpPost object
     */
    public static HttpPost postBuilder(String url, String apiKey) {
        HttpPost httpPost = new HttpPost(url);
        httpPost.setHeader("X-MBX-APIKEY", apiKey);
        return httpPost;
    }

    /**
     * Builds a fully configured ObjectMapper
     *
     * @return A fully configured ObjectMapper
     */
    public static ObjectMapper objectMapperBuilder() {
        return new ObjectMapper().findAndRegisterModules();
    }

    /**
     * Safely extracts the value from a LeftProjection of an Either
     *
     * @param val The LeftProjection to perform the extraction on
     * @param <L> The Left type
     * @param <R> The Right type
     * @return The unwrapped L type object
     */
    @SuppressWarnings("unchecked")
    public static <L, R> L extractEitherValueSafely(LeftProjection<L, R> val) {
        return (L) val.join(Function.identity(), Function.identity());
    }

    /**
     * Safely extracts the value from a RightProjection of an Either
     *
     * @param val The RightProjection to perform the extraction on
     * @param <L> The Left type
     * @param <R> The Right type
     * @return The unwrapped R type object
     */
    @SuppressWarnings("unchecked")
    public static <L, R> R extractEitherValueSafely(RightProjection<L, R> val) {
        return (R) val.join(Function.identity(), Function.identity());
    }
}