package act.route;

/*-
 * #%L
 * ACT Framework
 * %%
 * Copyright (C) 2014 - 2017 ActFramework
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
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import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.when;
import static org.osgl.http.H.Method.GET;

import act.ActTestBase;
import act.app.App;
import act.handler.RequestHandler;
import act.handler.RequestHandlerResolver;
import act.handler.builtin.AlwaysBadRequest;
import act.handler.builtin.AlwaysNotFound;
import act.handler.builtin.Echo;
import act.handler.builtin.FileGetter;
import org.junit.BeforeClass;
import org.junit.Test;
import org.mockito.Matchers;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.osgl.http.H;
import org.osgl.mvc.result.BadRequest;
import org.osgl.mvc.result.NotFound;

import java.io.File;

public class RouteTableRouterBuilderTest extends RouterTestBase {

    private RouteTableRouterBuilder builder;

    @BeforeClass
    public static void classInit() {
        UrlPath.testClassInit();
    }

    @Override
    protected void provisionControllerLookup(RequestHandlerResolver controllerLookup) {
        when(controllerLookup.resolve(anyString(), any(App.class))).thenAnswer(new Answer<RequestHandler>() {
            @Override
            public RequestHandler answer(InvocationOnMock invocation) throws Throwable {
                return new NamedMockHandler((String) invocation.getArguments()[0]);
            }
        });
    }

    @Override
    protected void buildRouteMapping(Router router) {
    }

    @Test
    public void withAnyMethod () {
        addRouteMap("* /somewhere Application.foo");
        for (H.Method m: Router.supportedHttpMethods()) {
            verify("Application.foo", m, "/somewhere");
        }
    }

    @Test
    public void withDynamicPath() {
        addRouteMap("GET /service/{id}/cost Services.cost");
        verify("Services.cost", GET, "/service/abc/cost");
        Mockito.verify(ctx).urlPathParam("id", "abc");
    }

    @Test
    public void withDynamicPathAndRegex() {
        addRouteMap("GET /service/{<[0-9]{3}>id}/cost Services.cost");
        verify("Services.cost", GET, "/service/123/cost");
        Mockito.verify(ctx).urlPathParam("id", "123");
    }

    @Test(expected = BadRequest.class)
    public void dynamicPathNotMatchRegEx() {
        addRouteMap("GET /service/{<[0-9]{3}>id}/cost Services.cost");
        verify("Services.cost", GET, "/service/1234/cost");
    }

    @Test
    public void withBuiltInHandler() {
        addRouteMap("GET /public file:/public");
        RequestHandler h = router.getInvoker(GET, "/public/file1.txt", ctx);
        yes(h instanceof FileGetter);
        eq(new File("target/test-classes/public"), ActTestBase.fieldVal(h, "base"));
    }

    @Test
    public void payloadContainsBlank() {
        addRouteMap("GET /magic_words echo: Hello world!");
        RequestHandler h = router.getInvoker(GET, "/magic_words", ctx);
        yes(h instanceof Echo);
        eq("Hello world!", ((Echo)h).readContent());
    }

    private void verify(String expected, H.Method method, String url) {
        H.Request req = Mockito.mock(H.Request.class);
        Mockito.when(ctx.req()).thenReturn(req);
        Mockito.when(ctx.attribute(anyString(), Matchers.any())).thenReturn(ctx);
        Mockito.when(req.path()).thenReturn(url);
        RequestHandler handler = router.getInvoker(method, url, ctx);
        if (handler == AlwaysNotFound.INSTANCE) {
            throw NotFound.get();
        } else if (handler == AlwaysBadRequest.INSTANCE) {
            throw BadRequest.get();
        }
        handler.handle(ctx);
        controllerInvoked(expected);
    }

    private void controllerInvoked(String payload) {
        eq(payload, NamedMockHandler.getName());
    }

    private void addRouteMap(String routeMap) {
        builder = new RouteTableRouterBuilder(routeMap);
        builder.build(router);
    }

}
