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 * The Universal Permissive License (UPL), Version 1.0
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 * person obtaining a copy of this software, associated documentation and/or
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 * (a) the Software, and
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 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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package com.oracle.truffle.js.runtime.builtins;

import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.interop.UnknownIdentifierException;
import com.oracle.truffle.api.interop.UnsupportedMessageException;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.objects.JSObject;
import com.oracle.truffle.js.runtime.objects.Undefined;

public abstract class JSPrimitive extends JSNonProxy implements PrototypeSupplier {
    protected JSPrimitive() {
    }

    @TruffleBoundary
    @Override
    public final Object getHelper(DynamicObject store, Object thisObj, Object key, Node encapsulatingNode) {
        assert this == JSNumber.INSTANCE || this == JSString.INSTANCE || this == JSBoolean.INSTANCE || this == JSBigInt.INSTANCE;

        Object propertyValue = super.getHelper(store, thisObj, key, encapsulatingNode);

        if (key instanceof String && allowJavaMembersFor(thisObj)) {
            JSContext context = JSObject.getJSContext(store);
            if (context.isOptionNashornCompatibilityMode() && context.getRealm().isJavaInteropEnabled()) {
                if (propertyValue == null) {
                    return getJavaProperty(thisObj, (String) key, context);
                }
            }
        }

        return propertyValue;
    }

    private static Object getJavaProperty(Object thisObj, String name, JSContext context) {
        String thisStr = (String) thisObj;
        Object boxedString = context.getRealm().getEnv().asBoxedGuestValue(thisStr);
        try {
            return InteropLibrary.getFactory().getUncached().readMember(boxedString, name);
        } catch (UnknownIdentifierException | UnsupportedMessageException e) {
            return Undefined.instance;
        }
    }

    @TruffleBoundary
    @Override
    public Object getMethodHelper(DynamicObject store, Object thisObj, Object key, Node encapsulatingNode) {
        if (key instanceof String && allowJavaMembersFor(thisObj)) {
            JSContext context = JSObject.getJSContext(store);
            if (context.isOptionNashornCompatibilityMode() && context.getRealm().isJavaInteropEnabled()) {
                if (hasOwnProperty(store, key)) {
                    Object method = getJavaMethod(thisObj, (String) key, context);
                    if (method != null) {
                        return method;
                    }
                }
            }
        }

        return super.getMethodHelper(store, thisObj, key, encapsulatingNode);
    }

    private static Object getJavaMethod(Object thisObj, String name, JSContext context) {
        String thisStr = (String) thisObj;
        Object boxedString = context.getRealm().getEnv().asBoxedGuestValue(thisStr);
        try {
            return InteropLibrary.getFactory().getUncached().readMember(boxedString, name);
        } catch (UnknownIdentifierException | UnsupportedMessageException e) {
            return null;
        }
    }

    private static boolean allowJavaMembersFor(Object thisObj) {
        return thisObj instanceof String;
    }
}