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package com.sap.mobile.services.client;

import com.sap.cloud.security.client.HttpClientFactory;
import com.sap.cloud.security.config.ClientCertificate;
import com.sap.cloud.security.config.ClientCredentials;
import com.sap.cloud.security.config.ClientIdentity;
import com.sap.cloud.security.xsuaa.client.DefaultOAuth2TokenService;
import com.sap.cloud.security.xsuaa.client.XsuaaDefaultEndpoints;
import com.sap.cloud.security.xsuaa.tokenflows.ClientCredentialsTokenFlow;
import com.sap.cloud.security.xsuaa.tokenflows.XsuaaTokenFlows;

public class XsuaaTokenFlowFactory {

	private static final String CREDENTIAL_TYPE_X509 = "x509";

	public ClientCredentialsTokenFlow createClientCredentialsTokenFlow(final MobileServicesBinding binding) {

		final ClientIdentity clientIdentity;
		if (CREDENTIAL_TYPE_X509.equals(binding.getClientConfiguration().getCredentialType())) {
			clientIdentity = new ClientCertificate(binding.getClientConfiguration().getCertificate(),
					binding.getClientConfiguration().getPrivateKey(), binding.getClientConfiguration().getClientId());
		} else {
			clientIdentity = new ClientCredentials(binding.getClientConfiguration().getClientId(),
					binding.getClientConfiguration().getClientSecret());
		}
		return createTokenFlows(clientIdentity, binding.getClientConfiguration().getUrl(),
				binding.getClientConfiguration().getCertUrl()).clientCredentialsTokenFlow();
	}

	XsuaaTokenFlows createTokenFlows(final ClientIdentity clientIdentity, final String oauthEndpointUrlBase,
			final String certUri) {
		return new XsuaaTokenFlows(
				new DefaultOAuth2TokenService(HttpClientFactory.create(clientIdentity)),
				new XsuaaDefaultEndpoints(oauthEndpointUrlBase, certUri),
				clientIdentity);
	}
}