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package net.java.html.json;

import net.java.html.BrwsrCtx;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

import java.util.ListIterator;

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

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

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

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

import static org.testng.Assert.*;

import org.testng.annotations.BeforeMethod;

import org.testng.annotations.Test;

/**

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

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

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

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

    @Property(name = "unrelated", type = long.class),

    @Property(name = "names", type = String.class, array = true),

    @Property(name = "values", type = int.class, array = true),

    @Property(name = "people", type = Person.class, array = true),

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

})

public class ModelTest {

    private MockTechnology my;

    private Modelik model;

    private static Modelik leakedModel;

    @BeforeMethod

    public void createModel() {

        my = new MockTechnology();

        final BrwsrCtx c = Contexts.newBuilder().register(Technology.class, my, 1).build();

        model = Models.bind(new Modelik(), c);

    }

    @Test public void classGeneratedWithSetterGetter() {

        model.setValue(10);

        assertEquals(10, model.getValue(), "Value changed");

    }

    @Test public void computedMethod() {

        model.setValue(4);

        assertEquals(16, model.getPowerValue());

    }

    @Test public void equalsAndHashCode() {

        Modelik m1 = new Modelik(10, 20, 30, "changed", "firstName");

        Modelik m2 = new Modelik(10, 20, 30, "changed", "firstName");

        assertTrue(m1.equals(m2), "They are the same");

        assertEquals(m1.hashCode(), m2.hashCode(), "Hashcode is the same");

        m1.setCount(33);

        assertFalse(m1.equals(m2), "No longer the same");

        assertFalse(m1.hashCode() == m2.hashCode(), "No longe is hashcode is the same");

    }

    @Test public void arrayIsMutable() {

        assertEquals(model.getNames().size(), 0, "Is empty");

        model.getNames().add("Jarda");

        assertEquals(model.getNames().size(), 1, "One element");

    }

    @Test public void arrayChangesNotNotifiedUntilInitied() {

        model.getNames().add("Hello");

        assertTrue(my.mutated.isEmpty(), "No change now " + my.mutated);

        model.getNames().remove("Hello");

        assertTrue(my.mutated.isEmpty(), "No change still " + my.mutated);

        assertTrue(model.getNames().isEmpty(), "No empty");

    }

    @Test public void arrayChangesNotified() {

        Models.applyBindings(model);

        model.getNames().add("Hello");

        assertFalse(my.mutated.isEmpty(), "There was a change" + my.mutated);

        assertTrue(my.mutated.contains("names"), "Change in names property: " + my.mutated);

        my.mutated.clear();

        Iterator<String> it = model.getNames().iterator();

        assertEquals(it.next(), "Hello");

        it.remove();

        assertFalse(my.mutated.isEmpty(), "There was a change" + my.mutated);

        assertTrue(my.mutated.contains("names"), "Change in names property: " + my.mutated);

        my.mutated.clear();

        ListIterator<String> lit = model.getNames().listIterator();

        lit.add("Jarda");

        assertFalse(my.mutated.isEmpty(), "There was a change" + my.mutated);

        assertTrue(my.mutated.contains("names"), "Change in names property: " + my.mutated);

    }

    @Test public void autoboxedArray() {

        model.getValues().add(10);

        assertEquals(model.getValues().get(0), Integer.valueOf(10), "Really ten");

    }

    @Test public void derivedArrayProp() {

        model.applyBindings();

        model.setCount(10);

        List<String> arr = model.getRepeat();

        assertEquals(arr.size(), 10, "Ten items: " + arr);

        my.mutated.clear();

        model.setCount(5);

        arr = model.getRepeat();

        assertEquals(arr.size(), 5, "Five items: " + arr);

        assertEquals(my.mutated.size(), 2, "Two properties changed: " + my.mutated);

        assertTrue(my.mutated.contains("repeat"), "Array is in there: " + my.mutated);

        assertTrue(my.mutated.contains("count"), "Count is in there: " + my.mutated);

    }

    @Test public void derivedPropertiesAreNotified() {

        model.applyBindings();

        model.setValue(33);

        // not interested in change of this property

        my.mutated.remove("changedProperty");

        assertEquals(my.mutated.size(), 2, "Two properties changed: " + my.mutated);

        assertTrue(my.mutated.contains("powerValue"), "Power value is in there: " + my.mutated);

        assertTrue(my.mutated.contains("value"), "Simple value is in there: " + my.mutated);

        my.mutated.clear();

        model.setUnrelated(44);

        // not interested in change of this property

        my.mutated.remove("changedProperty");

        assertEquals(my.mutated.size(), 1, "One property changed: " + my.mutated);

        assertTrue(my.mutated.contains("unrelated"), "Its name is unrelated");

    }

    @Test public void computedPropertyCannotWriteToModel() {

        leakedModel = model;

        try {

            String res = model.getNotAllowedWrite();

            fail("We should not be allowed to write to the model: " + res);

        } catch (IllegalStateException ex) {

            // OK, we can't read

        }

    }

    @Test public void computedPropertyCannotReadToModel() {

        leakedModel = model;

        try {

            String res = model.getNotAllowedRead();

            fail("We should not be allowed to read from the model: " + res);

        } catch (IllegalStateException ex) {

            // OK, we can't read

        }

    }

    @OnReceive(url = "{protocol}://{host}?query={query}", data = Person.class, onError = "errorState")

    static void loadPeople(Modelik thiz, People p) {

        Modelik m = null;

        m.applyBindings();

        m.loadPeople("http", "apidesign.org", "query", new Person());

    }

    static void errorState(Modelik thiz, Exception ex) {

    }

    @OnReceive(url = "{protocol}://{host}?callback={back}&query={query}", jsonp = "back")

    static void loadPeopleViaJSONP(Modelik thiz, People p) {

        Modelik m = null;

        m.applyBindings();

        m.loadPeopleViaJSONP("http", "apidesign.org", "query");

    }

    @Function 

    static void doSomething() {

    }

    @ComputedProperty

    static int powerValue(int value) {

        return value * value;

    }

    @OnPropertyChange({ "powerValue", "unrelated" })

    static void aPropertyChanged(Modelik m, String name) {

        m.setChangedProperty(name);

    }

    @OnPropertyChange({ "values" })

    static void anArrayPropertyChanged(String name, Modelik m) {

        m.setChangedProperty(name);

    }

    @Test public void changeAnything() {

        model.setCount(44);

        assertNull(model.getChangedProperty(), "No observed value change");

    }

    @Test public void changeValue() {

        model.setValue(33);

        assertEquals(model.getChangedProperty(), "powerValue", "power property changed");

    }

    @Test public void changeUnrelated() {

        model.setUnrelated(333);

        assertEquals(model.getChangedProperty(), "unrelated", "unrelated changed");

    }

    @Test public void changeInArray() {

        model.getValues().add(10);

        assertNull(model.getChangedProperty(), "No change before applyBindings");

        model.applyBindings();

        model.getValues().add(10);

        assertEquals(model.getChangedProperty(), "values", "Something added into the array");

    }

    @ComputedProperty

    static String notAllowedRead() {

        return "Not allowed callback: " + leakedModel.getUnrelated();

    }

    @ComputedProperty

    static String notAllowedWrite() {

        leakedModel.setUnrelated(11);

        return "Not allowed callback!";

    }

    @ComputedProperty

    static List<String> repeat(int count) {

        return Collections.nCopies(count, "Hello");

    }

    public @Test void hasPersonPropertyAndComputedFullName() {

        List<Person> arr = model.getPeople();

        assertEquals(arr.size(), 0, "By default empty");

        Person p = null;

        if (p != null) {

            String fullNameGenerated = p.getFullName();

            assertNotNull(fullNameGenerated);

        }

    }

    private static class MockTechnology implements Technology<Object> {

        private final List<String> mutated = new ArrayList<String>();

        @Override

        public Object wrapModel(Object model) {

            return this;

        }

        @Override

        public void valueHasMutated(Object data, String propertyName) {

            mutated.add(propertyName);

        }

        @Override

        public void bind(PropertyBinding b, Object model, Object data) {

        }

        @Override

        public void expose(FunctionBinding fb, Object model, Object d) {

        }

        @Override

        public void applyBindings(Object data) {

        }

        @Override

        public Object wrapArray(Object[] arr) {

            return arr;

        }

        @Override

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

            return modelClass.cast(data);

        }

        @Override

        public void runSafe(Runnable r) {

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

        }

    }

}