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package com.microsoft.aad.adal4j;

import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

Class for device code grant.
/**
 * Class for device code grant.
 */
public class AdalDeviceCodeAuthorizationGrant implements AdalAuthorizationGrant {
    private final static String GRANT_TYPE = "device_code";

    private final DeviceCode deviceCode;
    private final String resource;

    protected String correlationId;

    public String getCorrelationId() {
        return correlationId;
    }

    
 Create a new device code grant object from a device code and a resource.
Params:
deviceCode –  The device code.
resource –    The resource for which the device code was acquired./**
     *  Create a new device code grant object from a device code and a resource.
     *
     * @param deviceCode  The device code.
     * @param resource    The resource for which the device code was acquired.
     */
    AdalDeviceCodeAuthorizationGrant(final DeviceCode deviceCode, final String resource) {
        this.deviceCode = deviceCode;
        this.resource = resource;
        this.correlationId = deviceCode.getCorrelationId();
    }

    
Converts the device code grant to a map of HTTP paramters.
Returns:
The map with HTTP parameters./**
     * Converts the device code grant to a map of HTTP paramters.
     *
     * @return The map with HTTP parameters.
     */
    @Override
    public Map<String, List<String>> toParameters() {
        final Map<String, List<String>> outParams = new LinkedHashMap<>();
        outParams.put("resource", Collections.singletonList(resource));
        outParams.put("grant_type", Collections.singletonList(GRANT_TYPE) );
        outParams.put("code", Collections.singletonList(deviceCode.getDeviceCode()));

        return outParams;
    }
}