com.github.scribejava.apis.StackExchangeApi Maven / Gradle / Ivy

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package com.github.scribejava.apis;

import com.github.scribejava.core.builder.api.DefaultApi20;
import com.github.scribejava.core.extractors.OAuth2AccessTokenExtractor;
import com.github.scribejava.core.extractors.TokenExtractor;
import com.github.scribejava.core.model.OAuth2AccessToken;
import com.github.scribejava.core.oauth2.bearersignature.BearerSignature;
import com.github.scribejava.core.oauth2.bearersignature.BearerSignatureURIQueryParameter;

/**
 * Stack Exchange authentication via OAuth 2.0  (stackoverflow.com,
 * askubuntu.com, etc.).
 */
public class StackExchangeApi extends DefaultApi20 {

    protected StackExchangeApi() {
    }

    private static class InstanceHolder {
        private static final StackExchangeApi INSTANCE = new StackExchangeApi();
    }

    public static StackExchangeApi instance() {
        return InstanceHolder.INSTANCE;
    }

    @Override
    public String getAccessTokenEndpoint() {
        return "https://stackexchange.com/oauth/access_token";
    }

    @Override
    protected String getAuthorizationBaseUrl() {
        return "https://stackexchange.com/oauth";
    }

    @Override
    public TokenExtractor getAccessTokenExtractor() {
        return OAuth2AccessTokenExtractor.instance();
    }

    @Override
    public BearerSignature getBearerSignature() {
        return BearerSignatureURIQueryParameter.instance();
    }
}