/*******************************************************************************
 * ============LICENSE_START====================================================
 * * org.onap.aaf
 * * ===========================================================================
 * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
 * * ===========================================================================
 * * 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.
 * * ============LICENSE_END====================================================
 * *
 * * ECOMP is a trademark and service mark of AT&T Intellectual Property.
 * *
 ******************************************************************************/
package org.onap.aaf.xgen.html;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

import org.onap.aaf.inno.env.util.IndentPrintWriter;
import org.onap.aaf.xgen.Back;
import org.onap.aaf.xgen.Mark;


public class JSGen {
	private HTMLGen htmlGen;
	private IndentPrintWriter ipw;
	private Mark mark;

	public JSGen(Mark mark, HTMLGen hg) {
		this.mark = mark==null?new Mark():mark;
		hg.incr(this.mark, "script", "language=javascript", "type=text/javascript");
		htmlGen = hg;
		ipw = hg.getWriter();
	}

	public JSGen inline(String filename, int tabstop) throws IOException {
		BufferedReader br = new BufferedReader(new FileReader(filename));
		int indent = htmlGen.getIndent();
		try {
			boolean pretty = htmlGen.pretty;
			String line, el;
			int l, end;
			while((line=br.readLine())!=null) {
				if(pretty) {
					String[] elements = line.split("\t");
					
					for(int i=0; i<elements.length;++i) {
						el = elements[i];
						l = el.length();
						if(l==0) {// was a Tab
							ipw.print("  ");
						} else {
							el = el.trim();
							l = l-el.length();
							end = l/tabstop;
							for(int j=0;j<end;++j) {
								ipw.print("  ");
							}
							end = l%tabstop;
							for(int j=0;j<end;++j) {
								ipw.print(' ');
							}
							if(i>0) ipw.print(' ');
								ipw.print(el);
							}
					}
					ipw.println();
				} else {
					ipw.print(line.trim());
				}
			}
		} finally {
			htmlGen.setIndent(indent);
			try {
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return this;
	}
	
	public JSGen pst(String ... lines) {
		return pst(null, lines);
	}
	
	public JSGen pst(Mark jm, String ... lines) {
		if(lines.length>0) ipw.append(lines[0]);
		ipw.append('(');
		for(int i=1;i<lines.length;++i) {
			ipw.print(lines[i]);
			ipw.print(", ");
		}
		Back back;

		if(htmlGen.pretty) {
			back = new Back(");\n",false,false);
		} else {
			back = new Back(");",false,false);
		}
		int spot = htmlGen.pushBack(back);
		if(jm!=null)jm.spot(spot);
		return this;
	}
	
	public JSGen li(String ... lines) {
		int current = ipw.getIndent();
		for(int i=0;i<lines.length;++i) {
			if(i==1)ipw.inc();
			if(i>0)ipw.println();
			ipw.print(lines[i]);
		}
		ipw.setIndent(current);
		ipw.append(';');
		if(htmlGen.pretty)ipw.println();
		return this;
	}
	
	public JSGen text(String text) {
		ipw.append(text);
		if(htmlGen.pretty)ipw.println();
		return this;
	}

	public JSGen function(String name, String ... params) {
		return function(null, name, params);
	}
	
	public JSGen jqfunc(Mark mark, String name, String ... params) {
		pst(mark,"$").function(name, params);
		return this;
	}
	
	public JSGen function(Mark jm, String name, String ... params) {
		ipw.print("function ");
		ipw.print(name);
		ipw.print('(');
		for(int i=0;i<params.length;++i) {
			if(i!=0)ipw.print(", ");
			ipw.print(params[i]);
		}
		ipw.print(") {");
		if(htmlGen.pretty) {
			ipw.println();
			ipw.inc();
		}
		int spot = htmlGen.pushBack(new Back("}",true,true));
		if(jm!=null)jm.spot(spot); 
		return this;
	}
	
	public JSGen cb(String ... lines) {
		return cb(null,lines);
	}

	public JSGen cb(Mark jm, String ... lines) {
		int current = ipw.getIndent();
		for(int i=0;i<lines.length;++i) {
			if(i==1)ipw.inc();
			if(i>0)ipw.println();
			ipw.print(lines[i]);
		}
		ipw.setIndent(current);
		ipw.print('{');
		if(htmlGen.pretty) {
			ipw.println();
			ipw.inc();
		}
		int spot = htmlGen.pushBack(new Back("}",true,true));
		if(jm!=null)jm.spot(spot); 
		return this;

	}

	
	public JSGen comment(String ... lines) {
		if(htmlGen.pretty) {
			for(int i=0;i<lines.length;++i) {
				ipw.print("// ");
				ipw.println(lines[i]);
			}
		}
		return this;
	}
	
	public JSGen end(Mark mark) {
		htmlGen.end(mark);
		return this;
	}
	
	public HTMLGen done() {
		return htmlGen.end(mark);
	}
	
}