/*
 * Copyright 2011 the original author or authors.
 *
 * 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.
 */
package org.gradle.api.internal.tasks.testing.report;

import org.gradle.api.Action;
import org.gradle.internal.ErroringAction;
import org.gradle.internal.html.SimpleHtmlWriter;
import org.gradle.reporting.ReportRenderer;
import org.gradle.reporting.TabbedPageRenderer;
import org.gradle.reporting.TabsRenderer;

import java.io.IOException;
import java.net.URL;
import java.util.Set;

abstract class PageRenderer<T extends CompositeTestResults> extends TabbedPageRenderer<T> {
    private static final URL STYLE_URL = PageRenderer.class.getResource("style.css");

    private T results;
    private final TabsRenderer<T> tabsRenderer = new TabsRenderer<T>();

    protected T getResults() {
        return results;
    }

    protected abstract void renderBreadcrumbs(SimpleHtmlWriter htmlWriter) throws IOException;

    protected abstract void registerTabs();

    @Override
    protected URL getStyleUrl() {
        return STYLE_URL;
    }

    protected void addTab(String title, final Action<SimpleHtmlWriter> contentRenderer) {
        tabsRenderer.add(title, new ReportRenderer<T, SimpleHtmlWriter>() {
            @Override
            public void render(T model, SimpleHtmlWriter writer) {
                contentRenderer.execute(writer);
            }
        });
    }

    protected void renderTabs(SimpleHtmlWriter htmlWriter) throws IOException {
        tabsRenderer.render(getModel(), htmlWriter);
    }

    protected void addFailuresTab() {
        if (!results.getFailures().isEmpty()) {
            addTab("Failed tests", new ErroringAction<SimpleHtmlWriter>() {
                public void doExecute(SimpleHtmlWriter element) throws IOException {
                    renderFailures(element);
                }
            });
        }
    }

    protected void renderFailures(SimpleHtmlWriter htmlWriter) throws IOException {
        renderTestResultList(htmlWriter, results.getFailures());
    }

    private void renderTestResultList(SimpleHtmlWriter htmlWriter, Set<TestResult> failures) throws IOException {
        htmlWriter.startElement("ul").attribute("class", "linkList");
        for (TestResult test : failures) {
            htmlWriter.startElement("li");
            htmlWriter.startElement("a")
                .attribute("href", asHtmlLinkEncoded(getResults().getUrlTo(test.getClassResults())))
                .characters(test.getClassResults().getReportName())
                .endElement();
            htmlWriter.characters(".");
            String link = asHtmlLinkEncoded(getResults().getUrlTo(test.getClassResults())) + "#" + test.getName();
            htmlWriter.startElement("a")
                .attribute("href", link)
                .characters(test.getDisplayName()).endElement();
            htmlWriter.endElement();
        }
        htmlWriter.endElement();
    }

    protected void addIgnoredTab() {
        if (!results.getIgnored().isEmpty()) {
            addTab("Ignored tests", new ErroringAction<SimpleHtmlWriter>() {
                public void doExecute(SimpleHtmlWriter htmlWriter) throws IOException {
                    renderIgnoredTests(htmlWriter);
                }
            });
        }
    }

    protected void renderIgnoredTests(SimpleHtmlWriter htmlWriter) throws IOException {
        renderTestResultList(htmlWriter, getResults().getIgnored());
    }

    @Override
    protected String getTitle() {
        return getModel().getTitle();
    }

    @Override
    protected String getPageTitle() {
        return "Test results - " + getModel().getTitle();
    }

    @Override
    protected ReportRenderer<T, SimpleHtmlWriter> getHeaderRenderer() {
        return new ReportRenderer<T, SimpleHtmlWriter>() {
            @Override
            public void render(T model, SimpleHtmlWriter htmlWriter) throws IOException {
                PageRenderer.this.results = model;
                renderBreadcrumbs(htmlWriter);

                // summary
                htmlWriter.startElement("div").attribute("id", "summary");
                htmlWriter.startElement("table");
                htmlWriter.startElement("tr");
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "summaryGroup");
                htmlWriter.startElement("table");
                htmlWriter.startElement("tr");
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "infoBox").attribute("id", "tests");
                htmlWriter.startElement("div").attribute("class", "counter").characters(Integer.toString(results.getTestCount())).endElement();
                htmlWriter.startElement("p").characters("tests").endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "infoBox").attribute("id", "failures");
                htmlWriter.startElement("div").attribute("class", "counter").characters(Integer.toString(results.getFailureCount())).endElement();
                htmlWriter.startElement("p").characters("failures").endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "infoBox").attribute("id", "ignored");
                htmlWriter.startElement("div").attribute("class", "counter").characters(Integer.toString(results.getIgnoredCount())).endElement();
                htmlWriter.startElement("p").characters("ignored").endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "infoBox").attribute("id", "duration");
                htmlWriter.startElement("div").attribute("class", "counter").characters(results.getFormattedDuration()).endElement();
                htmlWriter.startElement("p").characters("duration").endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.startElement("td");
                htmlWriter.startElement("div").attribute("class", "infoBox " + results.getStatusClass()).attribute("id", "successRate");
                htmlWriter.startElement("div").attribute("class", "percent").characters(results.getFormattedSuccessRate()).endElement();
                htmlWriter.startElement("p").characters("successful").endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
                htmlWriter.endElement();
            }
        };
    }

    @Override
    protected ReportRenderer<T, SimpleHtmlWriter> getContentRenderer() {
        return new ReportRenderer<T, SimpleHtmlWriter>() {
            @Override
            public void render(T model, SimpleHtmlWriter htmlWriter) throws IOException {
                PageRenderer.this.results = model;
                tabsRenderer.clear();
                registerTabs();
                renderTabs(htmlWriter);
            }
        };
    }

    protected String asHtmlLinkEncoded(String rawLink) {
        return rawLink.replace("#", "%23");
    }
}
