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

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.ImportStatic;
import com.oracle.truffle.api.dsl.Specialization;
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.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.runtime.Errors;
import com.oracle.truffle.js.runtime.JSArguments;
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;

@NodeInfo(cost = NodeCost.NONE)
@ImportStatic({JSProxy.class})
public abstract class JSProxyHasPropertyNode extends JavaScriptBaseNode {

    @Child protected GetMethodNode trapGetter;
    @Child private JSFunctionCallNode callNode;
    @Child private JSToBooleanNode toBooleanNode;
    @Child private JSToPropertyKeyNode toPropertyKeyNode;
    private final BranchProfile errorBranch = BranchProfile.create();

    public JSProxyHasPropertyNode(JSContext context) {
        this.callNode = JSFunctionCallNode.createCall();
        this.trapGetter = GetMethodNode.create(context, null, JSProxy.HAS);
        this.toPropertyKeyNode = JSToPropertyKeyNode.create();
        this.toBooleanNode = JSToBooleanNode.create();
    }

    public static JSProxyHasPropertyNode create(JSContext context) {
        return JSProxyHasPropertyNodeGen.create(context);
    }

    public abstract boolean executeWithTargetAndKeyBoolean(Object shared, Object key);

    @Specialization
    protected boolean doGeneric(DynamicObject proxy, Object key,
                    @Cached("createBinaryProfile()") ConditionProfile trapFunProfile) {
        assert JSProxy.isJSProxy(proxy);
        Object propertyKey = toPropertyKeyNode.execute(key);
        DynamicObject handler = JSProxy.getHandlerChecked(proxy, errorBranch);
        Object target = JSProxy.getTarget(proxy);
        Object trapFun = trapGetter.executeWithTarget(handler);
        if (trapFunProfile.profile(trapFun == Undefined.instance)) {
            if (JSDynamicObject.isJSDynamicObject(target)) {
                return JSObject.hasProperty((DynamicObject) target, propertyKey);
            } else {
                return JSInteropUtil.hasProperty(target, propertyKey);
            }
        } else {
            Object callResult = callNode.executeCall(JSArguments.create(handler, trapFun, target, propertyKey));
            boolean trapResult = toBooleanNode.executeBoolean(callResult);
            if (!trapResult) {
                errorBranch.enter();
                if (!JSProxy.checkPropertyIsSettable(target, propertyKey)) {
                    throw Errors.createTypeError("Proxy can't successfully access a non-writable, non-configurable property", this);
                }
            }
            return trapResult;
        }
    }
}