/**

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

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 * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

 *

 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

 * Other names may be trademarks of their respective owners.

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 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

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 *

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package org.netbeans.html.json.impl;

import java.io.IOException;

import java.io.InputStream;

import java.lang.reflect.InvocationTargetException;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import net.java.html.BrwsrCtx;

import net.java.html.json.ComputedProperty;

import net.java.html.json.Model;

import net.java.html.json.Models;

import net.java.html.json.Property;

import org.netbeans.html.context.spi.Contexts;

import org.netbeans.html.json.spi.FunctionBinding;

import org.netbeans.html.json.spi.JSONCall;

import org.netbeans.html.json.spi.PropertyBinding;

import org.netbeans.html.json.spi.Technology;

import org.netbeans.html.json.spi.Transfer;

import static org.testng.Assert.*;

import org.testng.annotations.BeforeMethod;

import org.testng.annotations.Test;

/**

 *

 * @author Jaroslav Tulach

 */

public class DeepChangeTest {

    private MapTechnology t;

    private BrwsrCtx c;

    @BeforeMethod public void initTechnology() {

        t = new MapTechnology();

        c = Contexts.newBuilder().register(Technology.class, t, 1).

            register(Transfer.class, t, 1).build();

    }

    @Model(className = "MyX", properties = {

        @Property(name = "one", type = MyY.class),

        @Property(name = "all", type = MyY.class, array = true)

    })

    static class X {

        @ComputedProperty @Transitive(deep = true) 

        static String oneName(MyY one) {

            return one.getValue();

        }

        @ComputedProperty

        static String sndName(MyY one) {

            return one.getValue().toUpperCase();

        }

        @ComputedProperty @Transitive(deep = false) 

        static String noName(MyY one) {

            return one.getValue().toUpperCase();

        }

        @ComputedProperty @Transitive(deep = true) 

        static String thrdName(MyY one) {

            return "X" + one.getCount();

        }

        @ComputedProperty

        static String allNames(List<MyY> all) {

            StringBuilder sb = new StringBuilder();

            for (MyY y : all) {

                sb.append(y.getValue());

            }

            return sb.toString();

        }

        @ComputedProperty @Transitive(deep = true)

        static String firstFromNames(List<MyY> all) {

            for (MyY y : all) {

                if (y != null && y.getValue() != null) {

                    return y.getValue();

                }

            }

            return null;

        }

    }

    @Model(className = "MyY", properties = {

        @Property(name = "value", type = String.class),

        @Property(name = "count", type = int.class)

    })

    static class Y {

    }

    @Model(className = "MyOverall", properties = {

        @Property(name = "x", type = MyX.class)

    })

    static class Overall {

        @ComputedProperty @Transitive(deep = true) 

        static String valueAccross(MyX x) {

            return x.getFirstFromNames();

        }

    }

    @Test public void isTransitiveChangeNotifiedProperly() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("oneName");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Ahoj");

        p.getOne().setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 1, "One change so far");

    }

    @Test public void isTransitiveChangeInArrayNotifiedProperly() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("allNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "HiHello");

        p.getAll().get(0).setValue("Nazdar");

        assertEquals(o.get(), "NazdarHello");

        assertEquals(o.changes, 1, "One change so far");

    }

    @Test public void addingIntoArray() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("allNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "HiHello");

        MyY y = new MyY("Cus", 1);

        p.getAll().add(y);

        assertEquals(o.changes, 1, "One change so far");

        assertEquals(o.get(), "HiHelloCus");

        y.setValue("Nazdar");

        assertEquals(o.changes, 2, "2nd change so far");

        assertEquals(o.get(), "HiHelloNazdar");

        y.setValue("Zdravim");

        assertEquals(o.changes, 3, "3rd change so far");

        assertEquals(o.get(), "HiHelloZdravim");

    }

    @Test public void firstChangeInArrayNotifiedProperly() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("firstFromNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Hi");

        p.getAll().get(0).setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 1, "One change so far");

    }

    @Test public void firstChangeInArrayToNull() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("firstFromNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Hi");

        p.getAll().get(0).setValue(null);

        assertEquals(o.get(), "Hello");

        assertEquals(o.changes, 1, "One change so far");

        p.getAll().get(0).setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 2, "2nd change so far");

    }

    @Test public void firstChangeInArrayNotifiedTransitively() throws Exception {

        MyOverall p = Models.bind(

            new MyOverall(new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999))

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("valueAccross");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Hi");

        p.getX().getAll().get(0).setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 1, "One change so far");

    }

    @Test public void secondChangeInArrayIgnored() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("firstFromNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Hi");

        p.getAll().get(1).setValue("Nazdar");

        assertEquals(o.get(), "Hi");

        assertEquals(o.changes, 0, "No change so far");

    }

    @Test public void changeInArraySizeNeedsToBeRecomputed() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("firstFromNames");

        assertNotNull(v, "Value should be in the map");

        assertEquals(v.getClass(), One.class, "It is instance of One");

        One o = (One)v;

        assertEquals(o.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Hi");

        p.getAll().remove(1);

        assertEquals(o.get(), "Hi");

        assertEquals(o.changes, 1, "This required a change");

    }

    @Test public void doublePropertyChangeNotified() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("oneName");

        assertNotNull(v, "Value should be in the map");

        Object v2 = m.get("sndName");

        assertNotNull(v2, "Value2 should be in the map");

        One o = (One)v;

        One o2 = (One)v2;

        assertEquals(o.changes, 0, "No changes so far");

        assertEquals(o2.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Ahoj");

        assertEquals(o2.get(), "AHOJ");

        p.getOne().setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 1, "One change so far");

        assertEquals(o2.changes, 1, "One change so far");

        assertEquals(o2.get(), "NAZDAR");

    }

    @Test public void onlyAffectedPropertyChangeNotified() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("oneName");

        assertNotNull(v, "Value should be in the map");

        Object v2 = m.get("thrdName");

        assertNotNull(v2, "Value2 should be in the map");

        One o = (One)v;

        One o2 = (One)v2;

        assertEquals(o.changes, 0, "No changes so far");

        assertEquals(o2.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Ahoj");

        assertEquals(o2.get(), "X0");

        p.getOne().setCount(10);

        assertEquals(o.get(), "Ahoj");

        assertEquals(o.changes, 0, "Still no change");

        assertEquals(o2.changes, 1, "One change so far");

        assertEquals(o2.get(), "X10");

    }

    @Test public void onlyDeepPropsAreNotified() throws Exception {

        MyX p = Models.bind(

            new MyX(new MyY("Ahoj", 0), new MyY("Hi", 333), new MyY("Hello", 999)

        ), c).applyBindings();

        Map m = (Map)Models.toRaw(p);

        Object v = m.get("oneName");

        assertNotNull(v, "Value should be in the map");

        Object v2 = m.get("noName");

        assertNotNull(v2, "Value2 should be in the map");

        One o = (One)v;

        One o2 = (One)v2;

        assertEquals(o.changes, 0, "No changes so far");

        assertEquals(o2.changes, 0, "No changes so far");

        assertTrue(o.pb.isReadOnly(), "Derived property");

        assertEquals(o.get(), "Ahoj");

        assertEquals(o2.get(), "AHOJ");

        p.getOne().setValue("Nazdar");

        assertEquals(o.get(), "Nazdar");

        assertEquals(o.changes, 1, "One change so far");

        assertEquals(o2.changes, 0, "This change is not noticed");

        assertEquals(o2.get(), "NAZDAR", "but property value changes when computed");

    }

    static final class One {

        int changes;

        final PropertyBinding pb;

        final FunctionBinding fb;

        One(Object m, PropertyBinding pb) throws NoSuchMethodException {

            this.pb = pb;

            this.fb = null;

        }

        One(Object m, FunctionBinding fb) throws NoSuchMethodException {

            this.pb = null;

            this.fb = fb;

        }

        Object get() throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {

            return pb.getValue();

        }

        void set(Object v) throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {

            pb.setValue(v);

        }

    }

    static final class MapTechnology

            implements Technology<Map<String, One>>, Transfer {

        @Override

        public Map<String, One> wrapModel(Object model) {

            return new HashMap<String, One>();

        }

        @Override

        public void valueHasMutated(Map<String, One> data, String propertyName) {

            One p = data.get(propertyName);

            if (p != null) {

                p.changes++;

            }

        }

        @Override

        public void bind(PropertyBinding b, Object model, Map<String, One> data) {

            try {

                One o = new One(model, b);

                data.put(b.getPropertyName(), o);

            } catch (NoSuchMethodException ex) {

                throw new IllegalStateException(ex);

            }

        }

        @Override

        public void expose(FunctionBinding fb, Object model, Map<String, One> data) {

            try {

                data.put(fb.getFunctionName(), new One(model, fb));

            } catch (NoSuchMethodException ex) {

                throw new IllegalStateException(ex);

            }

        }

        @Override

        public void applyBindings(Map<String, One> data) {

        }

        @Override

        public Object wrapArray(Object[] arr) {

            return arr;

        }

        @Override

        public void extract(Object obj, String[] props, Object[] values) {

            Map<?, ?> map = obj instanceof Map ? (Map<?, ?>) obj : null;

            for (int i = 0; i < Math.min(props.length, values.length); i++) {

                if (map == null) {

                    values[i] = null;

                } else {

                    values[i] = map.get(props[i]);

                    if (values[i] instanceof One) {

                        values[i] = ((One) values[i]).pb.getValue();

                    }

                }

            }

        }

        @Override

        public void loadJSON(JSONCall call) {

            call.notifyError(new UnsupportedOperationException());

        }

        @Override

        public <M> M toModel(Class<M> modelClass, Object data) {

            return modelClass.cast(data);

        }

        @Override

        public Object toJSON(InputStream is) throws IOException {

            throw new IOException();

        }

        @Override

        public void runSafe(Runnable r) {

            throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.

        }

    }

}