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package org.apache.tuscany.sca.binding.comet.runtime.javascript;

import org.apache.tuscany.sca.assembly.ComponentService;
import org.apache.tuscany.sca.interfacedef.Operation;

public class JavascriptGenerator {

    public static final String JS_NAMESPACE = "SCA";
    private static final String COMPONENT_CONTEXT = "this.CometComponentContext";
    private static final String TUSCANY_COMET = "SCA.TuscanyComet";

    public static StringBuffer javascript = new StringBuffer();

    public static void generateServiceProxy(ComponentService service) {
        javascript.append(COMPONENT_CONTEXT + "." + service.getName() + " = new Object();\n");
    }

    public static void generateMethodProxy(ComponentService service, Operation operation) {
        javascript.append(COMPONENT_CONTEXT + "." + service.getName() + "." + operation.getName() + " = function(");
        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
            javascript.append("p" + i + ", ");
        }
        javascript.append("callbackMethod) {\n");
        javascript.append("  var params = [];\n");
        for (int i = 0; i < operation.getInputType().getLogical().size(); i++) {
            javascript.append("  params.push(p" + i + ");\n");
        }
        javascript.append("  " + TUSCANY_COMET
            + ".callAsync('"
            + service.getName()
            + "/"
            + operation.getName()
            + "', $.toJSON(params), callbackMethod);\n");
        javascript.append("}\n");
    }

}