/*
 * Copyright (c) 2004-2014, Willem Cazander
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *   following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
 *   the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package	org.x4o.sax3;

import java.io.IOException;
import java.io.Writer;
import java.util.Calendar;

import org.x4o.sax3.io.ContentCloseable;
import org.x4o.sax3.io.SAX3PropertyConfig;
import org.x4o.sax3.io.SAX3XMLConstants;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;

/**
 * ContentWriterHtml writes HTML events as SAX events to XML.
 * 
 * @author Willem Cazander
 * @version 1.0 Apr 30, 2013
 */
public class SAX3WriterHtml extends SAX3WriterEnum<SAX3WriterHtml.Tag,SAX3WriterXml> {
	
	public SAX3WriterHtml(Writer out, String encoding) {
		super(new SAX3WriterXml(out, encoding), "", SAX3XMLConstants.NULL_NS_URI);
	}
	
	public SAX3PropertyConfig getPropertyConfig() {
		return getContentWriterWrapped().getPropertyConfig();
	}
	
	public void printDocType(DocType doc) throws IOException {
		try {
			getContentWriterWrapped().startDTD(doc.getName(), doc.getPublicId(), doc.getSystemId());
		} catch (SAXException e) {
			throw new IOException(e);
		}
	}
	
	public void printHtmlStart(String language) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		if (language != null) {
			atts.addAttribute("", "lang", "", "", language);
		}
		printTagStart(Tag.html, atts);
	}
	
	public void printHtmlEnd() throws IOException {
		printTagEnd(Tag.html);
	}
	
	public void printHeadMetaDate() throws IOException {
		Calendar cal = Calendar.getInstance();
		printHeadMeta("date", cal.get(Calendar.YEAR) + "-" + (cal.get(Calendar.MONTH)+1) + "-" + cal.get(Calendar.DAY_OF_MONTH));
	}
	
	public void printHeadTitle(String title) throws IOException {
		printTagCharacters(Tag.title, title);
	}

	public void printHeadMetaContentType() throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "http-equiv", "", "", "Content-Type");
		atts.addAttribute("", "content", "", "", "text/html");
		atts.addAttribute("", "charset", "", "", getPropertyConfig().getPropertyString(SAX3WriterXml.OUTPUT_ENCODING));
		printTagStartEnd(Tag.meta, atts);
	}
	
	public void printHeadMeta(String name, String content) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "name", "", "", name);
		atts.addAttribute("", "content", "", "", content);
		printTagStartEnd(Tag.meta, atts);
	}
	
	public void printHeadLinkCss(String cssUrl) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "rel", "", "", "stylesheet");
		atts.addAttribute("", "type", "", "", "text/css");
		atts.addAttribute("", "title", "", "", "Style");
		atts.addAttribute("", "href", "", "", cssUrl);
		printTagStartEnd(Tag.link, atts);
	}
	
	public void printScriptSrc(String jsUrl) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "type", "", "", "text/javascript");
		atts.addAttribute("", "src", "", "", jsUrl);
		printTagStart(Tag.script, atts);
		printCharacters(" "); // NOTE: space needed to keep browsers happy
		printTagEnd(Tag.script);
	}
	
	public void printScriptInline(String script) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "type", "", "", "text/javascript");
		printTagStart(Tag.script, atts);
		printComment(script);
		printTagEnd(Tag.script);
	}
	
	public void printScriptNoDiv() throws IOException {
		printScriptNoDiv(null);
	}
	
	public void printScriptNoDiv(String text) throws IOException {
		if (text == null) {
			text = "JavaScript is disabled on your browser.";
		}
		printTagStart(Tag.noscript);
			printTagStart(Tag.div);printCharacters(text);printTagEnd(Tag.div);
		printTagEnd(Tag.noscript);
	}
	
	public void printHrefNamed(String name) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "name", "", "", name);
		printTagStart(Tag.a, atts);
		printComment(" ");
		printTagEnd(Tag.a);
	}
	
	public void printHrefTarget(String href, String target, String text) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "href", "", "", href);
		atts.addAttribute("", "target", "", "", target);
		printTagStart(Tag.a, atts);
		printCharacters(text);
		printTagEnd(Tag.a);
	}
	
	public void printHref(String href, String text) throws IOException {
		printHref(href, text, text);
	}
	
	public void printHref(String href, String text, String title) throws IOException {
		printHref(href, text, title, null);
	}
	
	public void printHref(String href, String text, String title, String spanClass) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		atts.addAttribute("", "href", "", "", href);
		if (title != null) {
			atts.addAttribute("", "title", "", "", title);
		}
		printTagStart(Tag.a,atts);
		if (spanClass != null) {
			atts = new AttributesImpl();
			if (spanClass.length() > 0) {
				atts.addAttribute("", "class", "", "", spanClass);
			}
			printTagStart(Tag.span,atts);
		}
		printCharacters(text);
		if (spanClass != null) {
			printTagEnd(Tag.span);
		}
		printTagEnd(Tag.a);
	}
	
	public void printTagCharacters(Tag tag, String text, String tagClass) throws IOException {
		printTagCharacters(tag, text, tagClass, null);
	}
	
	public void printTagCharacters(Tag tag, String text, String tagClass, String tagId) throws IOException {
		printTagStart(tag, tagClass, tagId, null);
		if (text == null) {
			text = " ";
		}
		printCharacters(text);
		printTagEnd(tag);
	}
	
	public ContentCloseable printTag(Tag tag, String tagClass) throws IOException {
		return printTag(tag, tagClass, null, null);
	}
	
	public ContentCloseable printTag(Tag tag, Enum<?> tagClassEnum) throws IOException {
		return printTag(tag, tagClassEnum, null);
	}
	
	public ContentCloseable printTag(Tag tag, Enum<?> tagClassEnum, String tagId) throws IOException {
		return printTag(tag, tagClassEnum, tagId, null);
	}
	
	public ContentCloseable printTag(Tag tag, Enum<?> tagClassEnum, String tagId, String typeId) throws IOException {
		return printTag(tag, tagClassEnum.name(), tagId, typeId);
	}
	
	public ContentCloseable printTag(Tag tag, String tagClass, String tagId, String typeId) throws IOException {
		printTagStart(tag, tagClass, tagId, typeId);
		return () -> printTagEnd(tag);
	}
	
	public void printTagStart(Tag tag, String tagClass) throws IOException {
		printTagStart(tag, tagClass, null, null);
	}
	
	public void printTagStart(Tag tag, Enum<?> tagClassEnum) throws IOException {
		printTagStart(tag, tagClassEnum, null);
	}
	
	public void printTagStart(Tag tag, Enum<?> tagClassEnum, String tagId) throws IOException {
		printTagStart(tag, tagClassEnum, tagId, null);
	}
	
	public void printTagStart(Tag tag, Enum<?> tagClassEnum, String tagId, String typeId) throws IOException {
		printTagStart(tag, tagClassEnum.name(), tagId, typeId);
	}
	
	public void printTagStart(Tag tag, String tagClass, String tagId, String typeId) throws IOException {
		AttributesImpl atts = new AttributesImpl();
		if (tagId != null && tagId.length() > 0) {
			atts.addAttribute("", "id", "", "", tagId);
		}
		if (tagClass != null && tagClass.length() > 0) {
			atts.addAttribute("", "class", "", "", tagClass);
		}
		if (typeId != null && typeId.length() > 0) {
			atts.addAttribute("", "type", "", "", typeId);
		}
		printTagStart(tag, atts);
	}
	
	public enum Tag {
		
		/* Deprecated TAGS */
		frameset,frame,noframes,tt,font,dir,center,strike,
		big,basefont,acronym,applet,iframe,
		
		/* HTML 4 TAGS */
		html,head,title,meta,link,base,body,script,style,
		
		h1,h2,h3,h4,h5,h6,
		a,div,span,p,pre,img,hr,br,
		b,em,strong,small,noscript,
		
		ul,li,dl,dt,dd,ol,
		table,thead,tfoot,tbody,caption,th,tr,td,
		
		abbr,address,area,bdo,blockquote,
		cite,code,col,colgroup,del,dfn,i,ins,
		kbd,legend,map,menu,object,param,
		optgroup,q,s,samp,sub,u,var,
		
		form,fieldset,input,option,
		label,button,select,textarea,
		
		/* HTML 5 TAGS */
		canvas,audio,video,source,embed,track,
		datalist,keygen,output,
		article,aside,bdi,command,details,dialog,summary,
		figure,figcaption,footer,header,hgroup,mark,meter,
		nav,progress,ruby,rt,rp,section,time,wbr,
		;
	}
	
	private final static String DOCTYPE_NAME = "HTML PUBLIC";
	public enum DocType {
		/* Order from worst to better. */
		HTML_5("html","",""),
		
		HTML_4_FRAMESET(DOCTYPE_NAME,"\"-//W3C//DTD HTML 4.01 Frameset//EN\"","http://www.w3.org/TR/html4/frameset.dtd"),
		HTML_4_TRANSITIONAL(DOCTYPE_NAME,"\"-//W3C//DTD HTML 4.01 Transitional//EN\"","http://www.w3.org/TR/html4/loose.dtd"),
		HTML_4_STRICT(DOCTYPE_NAME,"\"-//W3C//DTD HTML 4.01//EN\"","http://www.w3.org/TR/html4/strict.dtd"),

		XHTML_1_FRAMESET(DOCTYPE_NAME,"\"-//W3C//DTD XHTML 1.0 Frameset//EN\"","http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd"),
		XHTML_1_TRANSITIONAL(DOCTYPE_NAME,"\"-//W3C//DTD XHTML 1.0 Transitional//EN\"","http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"),
		XHTML_1_STRICT(DOCTYPE_NAME,"\"-//W3C//DTD XHTML 1.0 Strict//EN\"","http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"),
		
		XHTML_11(DOCTYPE_NAME,"\"-//W3C//DTD XHTML 1.1//EN\"","http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"),
		;
		
		private final String name;
		private final String publicId;
		private final String systemId;
		
		private DocType(String name, String publicId, String systemId) {
			this.name = name;
			this.publicId = publicId;
			this.systemId = systemId;
		}
		
		/**
		 * @return the name
		 */
		public String getName() {
			return name;
		}
		
		/**
		 * @return the publicId
		 */
		public String getPublicId() {
			return publicId;
		}
		
		/**
		 * @return the systemId
		 */
		public String getSystemId() {
			return systemId;
		}
	}
}