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package com.oracle.truffle.js.nodes.access;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.interop.InteropLibrary;
import com.oracle.truffle.api.nodes.NodeCost;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.api.object.DynamicObject;
import com.oracle.truffle.api.object.HiddenKey;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.cast.JSToBooleanNode;
import com.oracle.truffle.js.nodes.cast.JSToPropertyKeyNode;
import com.oracle.truffle.js.nodes.function.JSFunctionCallNode;
import com.oracle.truffle.js.nodes.interop.ExportValueNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSArguments;
import com.oracle.truffle.js.runtime.JSConfig;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.builtins.JSProxy;
import com.oracle.truffle.js.runtime.interop.JSInteropUtil;
import com.oracle.truffle.js.runtime.objects.JSDynamicObject;
import com.oracle.truffle.js.runtime.objects.JSObject;
import com.oracle.truffle.js.runtime.objects.Undefined;
import com.oracle.truffle.js.runtime.util.JSClassProfile;

@NodeInfo(cost = NodeCost.NONE)
public abstract class JSProxyPropertySetNode extends JavaScriptBaseNode {

    private final boolean isStrict;

    @Child private JSFunctionCallNode call;
    @Child private JSToBooleanNode toBoolean;
    @Child protected GetMethodNode trapGet;
    @Child private JSToPropertyKeyNode toPropertyKeyNode;
    @Child private InteropLibrary interopNode;
    @Child private ExportValueNode exportValueNode;
    private final BranchProfile errorBranch = BranchProfile.create();

    protected JSProxyPropertySetNode(JSContext context, boolean isStrict) {
        this.call = JSFunctionCallNode.createCall();
        this.trapGet = GetMethodNode.create(context, null, JSProxy.SET);
        this.toBoolean = JSToBooleanNode.create();
        this.isStrict = isStrict;
    }

    public abstract boolean executeWithReceiverAndValue(Object proxy, Object receiver, Object value, Object key);

    public abstract boolean executeWithReceiverAndValueInt(Object proxy, Object receiver, int value, Object key);

    public static JSProxyPropertySetNode create(JSContext context, boolean isStrict) {
        return JSProxyPropertySetNodeGen.create(context, isStrict);
    }

    @Specialization
    protected boolean doGeneric(DynamicObject proxy, Object receiver, Object value, Object key,
                    @Cached("createBinaryProfile()") ConditionProfile hasTrap,
                    @Cached JSClassProfile targetClassProfile) {
        assert JSProxy.isJSProxy(proxy);
        assert !(key instanceof HiddenKey);
        Object propertyKey = toPropertyKey(key);
        DynamicObject handler = JSProxy.getHandlerChecked(proxy, errorBranch);
        Object target = JSProxy.getTarget(proxy);
        Object trapFun = trapGet.executeWithTarget(handler);
        if (hasTrap.profile(trapFun == Undefined.instance)) {
            if (JSDynamicObject.isJSDynamicObject(target)) {
                return JSObject.setWithReceiver((DynamicObject) target, propertyKey, value, receiver, isStrict, targetClassProfile, this);
            } else {
                truffleWrite(target, propertyKey, value);
                return true;
            }
        }
        Object trapResult = call.executeCall(JSArguments.create(handler, trapFun, target, propertyKey, value, receiver));
        boolean booleanTrapResult = toBoolean.executeBoolean(trapResult);
        if (!booleanTrapResult) {
            errorBranch.enter();
            if (isStrict) {
                throw Errors.createTypeErrorTrapReturnedFalsish(JSProxy.SET, propertyKey);
            } else {
                return false;
            }
        }
        return JSProxy.checkProxySetTrapInvariants(proxy, propertyKey, value);
    }

    private void truffleWrite(Object obj, Object key, Object value) {
        InteropLibrary interop = interopNode;
        ExportValueNode exportValue = exportValueNode;
        if (interop == null || exportValue == null) {
            CompilerDirectives.transferToInterpreterAndInvalidate();
            interopNode = interop = insert(InteropLibrary.getFactory().createDispatched(JSConfig.InteropLibraryLimit));
            exportValueNode = exportValue = insert(ExportValueNode.create());
        }
        JSInteropUtil.writeMember(obj, key, value, interop, exportValue, this);
    }

    Object toPropertyKey(Object key) {
        if (toPropertyKeyNode == null) {
            CompilerDirectives.transferToInterpreterAndInvalidate();
            toPropertyKeyNode = insert(JSToPropertyKeyNode.create());
        }
        return toPropertyKeyNode.execute(key);
    }
}