package de.superx.bin;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;

import org.pentaho.di.core.KettleEnvironment;
import org.pentaho.di.core.exception.KettleException;

import de.memtext.util.GetOpts;
import de.memtext.util.StringUtils;
import de.superx.bin.fm.EtlStarter;
import de.superx.common.DBServletException;
import de.superx.common.SuperX_el;
import de.superx.common.SxResultRow;
import de.superx.common.SxResultSet;
import de.superx.servlet.ServletUtils;
import de.superx.servlet.SuperXManager;
import de.superx.servlet.SxPools;

public class KettleExecutor {
    private String mandantenID;

    private SxJob sxJob;

    private boolean isPostgres = true;

    private StringBuffer resultMessages = new StringBuffer("");

    private Map<String, String> jobParams = new HashMap<String, String>();

    public KettleExecutor(String mandantenID) {
        this.mandantenID = mandantenID;
        isPostgres = SxPools.get(mandantenID).getDatabaseAbbr().equals(("PG"));
    }

    public void setParams(Map<String, String> jobParams) {
        this.jobParams = jobParams;
    }

    public StringBuffer perform() throws IOException, SQLException, DBServletException {
        try {
            initSxJob();
            EtlStarter es = new EtlStarter(this.mandantenID);
            if (!isModusVorschau()) {
                check_sql("vor");
            }
            resultMessages.append(es.kettleCallEmbedded(mandantenID, sxJob.getFilepath(), jobParams, isPostgres));
            if (isModusVorschau()) {
                //Vor Ergebnis Vorschau einfügen
                resultMessages.insert(0, getPreviewInfo());
            } else {
                check_sql("nach");
            }


        } catch (Exception e) {
            throw new IOException(e);
        }
        return resultMessages;
    }

    private boolean isModusVorschau() {
        return jobParams.containsKey("Modus") && jobParams.get("Modus") != null && jobParams.get("Modus").equals("3");
    }

    private StringBuilder getPreviewInfo() throws IOException {
        StringBuilder result = new StringBuilder();
        File loadjoblog = new File(new File(sxJob.getFilepath().replaceAll("file:", "")).getParentFile().getPath() + File.separator + "ladejob.log");
        if (loadjoblog.exists()) {
            String rawpreview = StringUtils.readFile(loadjoblog);
            StringTokenizer st = new StringTokenizer(rawpreview, "\n");
            result.append("Vorschau\n");
            String currentHeader = "";
            while (st.hasMoreTokens()) {
                String line = st.nextToken();
                if (line.indexOf("|") > -1) {
                    String firstpart = line.substring(0, line.indexOf("|"));
                    if (!firstpart.equals(currentHeader)) {
                        result.append(firstpart + "\n");
                        currentHeader = firstpart;
                        result.append("-->" + line.substring(line.indexOf("|") + 1) + "\n");
                    } else {
                        result.append("-->" + StringUtils.replace(line, firstpart + "|", "") + "\n");
                    }
                }
            }

        }
        return result;
    }

    private void check_sql(String pos) throws SQLException, DBServletException {
        if (sxJob.check_sql != null) {
            SuperX_el el = ServletUtils.execute_el("check_sql " + pos + " Durchführung von Ladejob " + sxJob.getCaption(), sxJob.check_sql, false, mandantenID);
            SxResultSet rs = el.getResultSet();
            for (Iterator it = rs.iterator(); it.hasNext();) {
                SxResultRow row = (SxResultRow) it.next();
                Object erg = row.get(0);
                if (erg != null) {
                    resultMessages.append("Prüfselektion " + pos + " Durchführung von Ladejob " + sxJob.getCaption());
                    resultMessages.append("\n" + erg.toString() + "\n");
                }
            }
        }

    }


    private void initSxJob() throws SQLException, DBServletException {
        SxResultSet rs = ServletUtils.execute("Einlesen von SxJob)", "select caption,filepath,params,check_sql from sx_jobs where tid=" + jobParams.get("Job"), mandantenID);
        sxJob = new SxJob();
        for (Iterator it = rs.iterator(); it.hasNext();) {
            SxResultRow row = (SxResultRow) it.next();
            sxJob.setCaption(row.get(0).toString());
            sxJob.setFilepath("file://" + SuperXManager.getModuleDir() + File.separator + row.get(1).toString());
            sxJob.setParams((String) row.get(2));
            sxJob.setCheck_sql((String) row.get(3));
        }
    }

    public static void main(String args[]) {
        String usage = "usage: -mandantenID:default -MODULE_PFAD:/home/superx/db/module -WEB_INF_PFAD:/home/superx/webserver/tomcat/webapps/superx/WEB-INF -job_uniquename:abc -path_to_uploadfile:/home/superx (optional)";
        GetOpts.setOpts(args);
        String isdrin = GetOpts.isAllRequiredOptionsPresent("-mandantenID,-WEB_INF_PFAD,-MODULE_PFAD,-job_uniquename");
        if (isdrin != null) {

            System.err.println(usage);
            System.exit(1);
        }

        String mandantenID = GetOpts.getValue("-mandantenID");
        String job_uniquename = GetOpts.getValue("-job_uniquename");
        String webinfpfad=GetOpts.getValue("-WEB_INF_PFAD");
        	if(webinfpfad != null && !webinfpfad.equals(""))
        		SuperXManager.setWEB_INFPfad(GetOpts.getValue("-WEB_INF_PFAD"));
        SuperXManager.setModuleDir(GetOpts.getValue("-MODULE_PFAD"));
        String path_to_uploadfile = "";
        if (GetOpts.isPresent("-path_to_uploadfile")) {
            path_to_uploadfile = GetOpts.getValue("-path_to_uploadfile");
            if (!new File(path_to_uploadfile).exists()) {
                System.out.println("Fehler: Datei " + path_to_uploadfile + " nicht gefunden");
                System.exit(-1);
            }
        }
        try {
            //muss vor SxPools init ausgeführt werden, sonst kann kein kettleDatabaseMeta-Objekt erzeugt werden java.lang.RuntimeException: Database type not found!
            KettleEnvironment.init();

            SxPools.init();
            SxPools.get(mandantenID).init();
            //SxPools.get(mandantenID).initLogging(true);
            SxPools.resetAllPools();
        } catch (Exception e) {
            System.out.println("Fehler beim Datenbankverbindungsaufbau " + e);
            e.printStackTrace();
            ;

            System.exit(-1);
        }
        try {
            String jobtid = getJobTid(job_uniquename, mandantenID);
            KettleExecutor ke = new KettleExecutor(mandantenID);
            Map<String, String> jobParams = new HashMap<String, String>();
            jobParams.put("Job", jobtid);
            jobParams.put("PATH_TO_UPLOADFILE", path_to_uploadfile);
            ke.setParams(jobParams);

            ke.perform();
            System.out.println("Keine Fehler aufgefallen");
        } catch (Exception e) {

            System.out.println("Fehler bei Verarbeitung " + e);
            e.printStackTrace();
            System.exit(-1);

        }
    }

    private static String getJobTid(String job_uniquename, String mandantenID) throws SQLException, DBServletException {
        String tid = "";
        String sql = "select tid from sx_jobs where uniquename='" + job_uniquename + "'";
        SxResultSet rs = ServletUtils.execute("Suche tid für sx_job mit uniquename " + job_uniquename, sql, mandantenID);
        if (rs.size() == 0) throw new RuntimeException("Kein sx_job mit uniquename " + job_uniquename + " gefunden");
        if (rs.size() > 1) throw new RuntimeException("Mehrere sx_jobs mit uniquename " + job_uniquename + " gefunden");

        for (Iterator it = rs.iterator(); it.hasNext();) {
            SxResultRow row = (SxResultRow) it.next();
            Object erg = row.get(0);
            if (erg != null) tid = erg.toString();
        }
        return tid;
    }

    private class SxJob {
        private String filepath;

        private String params;

        private String check_sql;

        private String caption;

        public String getCaption() {
            return caption;
        }

        public void setCaption(String caption) {
            this.caption = caption;
        }

        public String getFilepath() {
            return filepath;
        }

        public void setFilepath(String filepath) {
            this.filepath = filepath;
        }

        public String getParams() {
            return params;
        }

        public void setParams(String params) {
            this.params = params;
        }

        public String getCheck_sql() {
            return check_sql;
        }

        public void setCheck_sql(String check_sql) {
            this.check_sql = check_sql;
        }



    }

}