/*
 * [PrepareCanadianTax.java]
 *
 * Summary: prepare Canadian Tax resources, tax rates over time for GST/PST.
 *
 * Copyright: (c) 2011-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2011-03-24 initial version
 */
package com.mindprod.canadiantax;

import com.mindprod.common18.BigDate;
import com.mindprod.common18.Build;
import com.mindprod.csv.CSVReader;

import java.io.BufferedReader;
import java.io.EOFException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Pattern;

import static java.lang.System.*;

/**
 * prepare Canadian Tax resources, tax rates over time for GST/PST.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2011-03-24 initial version.
 * @since 2011-03-24
 */
final class PrepareCanadianTax
    {
    /**
     * used to split two parts of HST field.
     */
    private static final Pattern SPLIT_ON_PLUS = Pattern.compile( "\\+" );

    public static void main( String[] args ) throws IOException
        {
        final CSVReader r = new CSVReader( new BufferedReader( new FileReader(
                Build.MINDPROD_SOURCE + "/canadiantax/cantaxhistory.csv" ) ) );
        try
            {
            while ( true )
                {
                // date,    pr, GST, HST,  PST, tax on tax, authority
                final BigDate date = new BigDate( r.getYYYYMMDD() );
                final String prov = r.get().intern();
                double gst = r.getDouble();
                final String hstPair = r.get();
                double pst = r.getDouble();
                boolean taxOnTax = r.getBoolean();
                final double hst;
                if ( hstPair.equals( "0" ) )
                    {
                    hst = 0;
                    }
                else
                    {
                    // hst is  encoded as   5+7
                    final String[] pieces = SPLIT_ON_PLUS.split( hstPair );
                    if ( pieces.length != 2 )
                        {
                        throw new IllegalArgumentException( "malformed hst gst+pst at line " + r.lineCount() );
                        }
                    gst = Double.parseDouble( pieces[ 0 ] );
                    pst = Double.parseDouble( pieces[ 1 ] );
                    hst = gst + pst;
                    }
                // don't include province internally.
                Province province = Province.valueOf( prov );
                out.println( province.name() + " " + date + " g:" + gst + " h:" + hst + " p:" + pst + " taxontax:" +
                             taxOnTax );
                province.add( new ProvincialTaxFact( date, gst, hst, pst, taxOnTax ) );
                r.skipToNextLine();
                }
            }
        catch ( EOFException e )
            {
            r.close();
            Province.exportTaxResource();
            }
        }
    }