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package com.sun.jersey.server.impl.model.parameter;

import com.sun.jersey.api.ParamException;
import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.model.Parameter;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.server.impl.inject.AbstractHttpContextInjectable;
import com.sun.jersey.server.impl.model.parameter.multivalued.ExtractorContainerException;
import com.sun.jersey.server.impl.model.parameter.multivalued.MultivaluedParameterExtractor;
import com.sun.jersey.server.impl.model.parameter.multivalued.MultivaluedParameterExtractorProvider;
import com.sun.jersey.spi.inject.Injectable;
import javax.ws.rs.CookieParam;
import javax.ws.rs.core.Cookie;


/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public final class CookieParamInjectableProvider extends BaseParamInjectableProvider<CookieParam> {
    
    private static final class CookieParamInjectable extends AbstractHttpContextInjectable<Object> {
        private final MultivaluedParameterExtractor extractor;
        
        CookieParamInjectable(MultivaluedParameterExtractor extractor) {
            this.extractor = extractor;
        }
        
        public Object getValue(HttpContext context) {
            try {
                return extractor.extract(context.getRequest().getCookieNameValueMap());
            } catch (ExtractorContainerException e) {
                throw new ParamException.CookieParamException(e.getCause(),
                        extractor.getName(), extractor.getDefaultStringValue());
            }
        }
    }
    
    private static final class CookieTypeParamInjectable extends AbstractHttpContextInjectable<Cookie> {
        private final String name;
        
        CookieTypeParamInjectable(String name) {
            this.name = name;
        }

        public Cookie getValue(HttpContext context) {
            return context.getRequest().getCookies().get(name);
        }
    }
    
    public CookieParamInjectableProvider(MultivaluedParameterExtractorProvider w) {
        super(w);
    }

    public Injectable getInjectable(ComponentContext ic, CookieParam a, Parameter c) {
        String parameterName = c.getSourceName();
        if (parameterName == null || parameterName.length() == 0) {
            // Invalid cookie parameter name
            return null;
        }
        
        if (c.getParameterClass() == Cookie.class) {
            return new CookieTypeParamInjectable(parameterName);
        } else {
            MultivaluedParameterExtractor e = get(c);

            if (e == null)
                return null;
            return new CookieParamInjectable(e);
        }
    }
}