package gov.nist.hitsp.validation;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import net.ihe.gazelle.tools.comparator.DocumentValidator;
import net.ihe.gazelle.tools.comparator.FileReadWrite;
import net.ihe.gazelle.validation.Error;
import net.ihe.gazelle.validation.Notification;

public class NistBasicValidation implements DocumentValidator {
	
	private static String pathres = "/home/aboufahj/Documents/ihic/tools-res/nistres/";
	
	public static void main(String[] args) {
		new NistBasicValidation().validateDocument(
				"/home/aboufahj/workspaceTopcased/cdabasic-validator-jar/src/test/resources/samples/ActSpec_rmim001_1_OK_1.xml");
	}

	public List<Notification> validateDocument(String filepath) {
		File fil = new File(filepath);
		File resFile = new File(pathres + fil.getName().split("\\.")[0] + ".txt");
		String res = validate(filepath, resFile);
		List<Notification> listNot = transformResultIntoListNotif(res);
		System.out.println(fil.getName());
		System.out.println(res);
		
		return listNot;
	}
	
	private List<Notification> transformResultIntoListNotif(String res) {
		List<Notification> listNot = new ArrayList<Notification>();
		String regex = "Severity:(.*?)\nSpecification:(.*?)\nMessage:(.*?)\nContext:(.*?)\nTest:(.*?)\n";
		Pattern pat = Pattern.compile(regex, Pattern.DOTALL|Pattern.MULTILINE);
		Matcher mat = pat.matcher(res);
		while (mat.find()){
			if (mat.group(1).contains("error")){
				Notification not = new Error();
				not.setDescription(mat.group(3));
				not.setLocation(mat.group(4));
				listNot.add(not);
			}
		}
		return listNot;
	}

	private String validate(String filepath, File resFile){
		if (resFile.exists()) {
			try{
				return FileReadWrite.readDoc(resFile.getAbsolutePath());
			}
			catch(Exception e){
				e.printStackTrace();
				return "";
			}
		}
		
		StringBuffer result = new StringBuffer();
		String validatorpath =  "java -jar /home/aboufahj/Documents/ihic/tools/cdaValidateClient-nist/hitspValidationWSClient.jar -validate "
				+ " -specification cdar2 -wsUrl http://cda-validation.nist.gov:11080/ws/services/ValidationWebService?wsdl " 
				+ "-document ";
		try {
			Process p = Runtime.getRuntime().exec(validatorpath + " " + filepath);
			BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getInputStream()));
			String s = new String();
			while((s = stdError.readLine()) != null){
				result.append(s + "\n");
			}
		} catch (IOException e) {
			result = new StringBuffer();
			result.append("A problem occurred when validating : " + e.getMessage());
			e.printStackTrace();
		}
		String maChaine = result.toString();
		try{
			FileOutputStream fos = new FileOutputStream(resFile);
			fos.write(maChaine.getBytes());
			fos.close();
		}
		catch(Exception e){
			e.printStackTrace();
		}
		return maChaine;
	}

}