com.github.lontime.extpac4j.oauth.extractors.WechatJsonExtExtractor Maven / Gradle / Ivy

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package com.github.lontime.extpac4j.oauth.extractors;

import com.fasterxml.jackson.databind.JsonNode;
import com.github.scribejava.core.extractors.OAuth2AccessTokenJsonExtractor;
import com.github.scribejava.core.model.OAuth2AccessToken;
import org.pac4j.scribe.model.WechatToken;

/**
 * WechatJsonExtExtractor.
 * @author lontime
 * @since 1.0
 */
public class WechatJsonExtExtractor extends OAuth2AccessTokenJsonExtractor {

    protected WechatJsonExtExtractor() {
    }

    private static class InstanceHolder {

        private static final WechatJsonExtExtractor INSTANCE = new WechatJsonExtExtractor();
    }

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

    @Override
    protected OAuth2AccessToken createToken(String accessToken, String tokenType, Integer expiresIn, String refreshToken, String scope,
                                            JsonNode response, String rawResponse) {
        String openid = extractRequiredParameter(response, "openid", rawResponse).asText();
        String unionid = null;
        if (response.has("unionid")) {
            unionid = extractRequiredParameter(response, "unionid", rawResponse).asText();
        }
        WechatToken token = new WechatToken(accessToken, tokenType, expiresIn, refreshToken, scope, rawResponse, openid, unionid);
        return token;
    }
}