#!/usr/bin/env php
<?php
/**
 * Generate territory matrices from data files
 *
 *   Copyright (C) 2014-2022 Ryan Specialty Group, LLC.
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
?>
<?xml version="1.0"?>
<lv:package
  xmlns:lv="http://www.lovullo.com/rater"
  xmlns:c="http://www.lovullo.com/calc"

<?php

include 'lib/zipre.php';

function parse_tdesc( $line )
{
    if ( !( preg_match( '/^([0-9A-Z]+) (.+)$/', $line, $match ) ) )
    {
        throw new Exception( 'Invalid territory descriptor' );
    }

    return array( $match[ 1 ], $match[ 2 ] );
}

function gen_yields( $id, $name )
{
    return sprintf( 'is%sTerr%s', ucfirst( $name ), $id );
}

function gen_classification( $id, $name, $desc, $prev_yields, $queue, $or )
{
    $yields = gen_yields( $id, $name );

    $prev_value = '';
    foreach ( $prev_yields as $prev )
    {
        if ( !$prev )
        {
            continue;
        }

        $prev_value .= '  <lv:match on="' . $prev . '" value="FALSE" />' . "\n";
    }

    return sprintf(
        '<lv:classify as="%s-terr%s" desc="%s" yields="%s">' .
            "\n%s" .
            "  %s\n" .
            "\n</lv:classify>\n",
        $name,
        gen_identifier( $id ),
        $desc,
        $yields,
        $prev_value,
        gen_any_block( $queue, $or )
    );
}


function gen_any_block( $queue, $or )
{
    $any = gen_zip_re( $queue ) .
        gen_on_class( $or );

    return ( $any )
        ? '<lv:any>' . $any . '</lv:any>'
        : '';
}


function gen_zip_re( $data )
{
    if ( count( $data ) === 0 )
    {
        return '';
    }

    return sprintf(
        '<lv:match on="zip" pattern="%s" />',
        gen_re_quick( $data )
    );
}

function gen_on_class( $data )
{
    if ( count( $data ) === 0 )
    {
        return '';
    }

    $cur = array_shift( $data );

    return sprintf(
        '<lv:match on="%s" value="TRUE" />%s',
        $cur,
        gen_on_class( $data )
    );
}

function gen_identifier( $id )
{
    return is_numeric( $id )
        ? $id
        : '-' . strtolower( $id );
}

function gen_identifier_value( $id )
{
    // for non-numeric identifiers, return ascii value
    // of character to represent our value
    return is_numeric( $id )
        ? $id
        : ord( $id );
}

$file = $argv[ 1 ];
$fdat = explode( '.', basename( $file ) );
$name = $fdat[ 0 ];

$cur   = '';
$queue = array();
$or    = array();

$fh = fopen( $file, 'r' );

echo 'name="rates/territories/', $name, '" ', "\n",
  'desc="', ucfirst( $name ), ' territory classifications">' . "\n\n";

echo "<!--\n",
    "  WARNING: This file was generated by {$argv[0]}; do not modify!\n",
    "-->\n\n";

$ids             = array();
$params          = array();
$imports         = array();
$prev_yields     = '';
$prev_yields_all = array();
$classes         = '';

$param_type = 'terrType' . ucfirst( $name );

while ( true )
{
    // read the line within the loop so that we do not terminate until after we
    // treat eof as an empty line
    $line = str_replace( array( "\n", "\r" ), '', fgets( $fh ) );

    if ( !$cur )
    {
        if ( substr( $line, 0, 12 ) === '@import-pkg ' )
        {
            $imports[] = substr( $line, 12 );
            continue;
        }

        // we expect this line to be a territory descriptor
        try
        {
            list ( $id, $desc ) = parse_tdesc( $line );
        }
        catch ( Exception $e )
        {
            fwrite( STDERR, 'Invalid territory descriptor: ' . $line );
            exit( 1 );
        }

        $ids[] = $id;
        $cur   = $id;
    }
    elseif ( ( $line === '' ) || feof( $fh ) )
    {
        // generate param for typedef
        $params[ $id ] = $desc;

        // if there's nothing in the queue, then treat this as an 'ROS' (this
        // should appear as the *last* territory, or it will not function as
        // expected)
        if ( count( $queue ) === 0 )
        {
            $prev = $prev_yields_all;
        }
        else
        {
            $prev = array( $prev_yields );
        }

        // generate the classification
        $classes .= gen_classification( $id, $name, $desc, $prev, $queue, $or );

        // this accomplishes two things: (1) avoids regexes if there's a
        // previous match and (2) ensures that we cannot possibly match multiple
        // territories
        $prev_yields       = gen_yields( $id, $name );
        $prev_yields_all[] = $prev_yields;

        $cur   = '';
        $queue = array();
        $or    = array();

        if ( feof( $fh ) )
        {
            break;
        }
    }
    elseif ( $line[0] === '=' )
    {
        // =foo means match on classification @yields "foo"
        $or[] = substr( $line, 1 );
    }
    else
    {
        $queue[] = $line;
    }
}

$param_name = 'territory_' . $name;
?>

<?php /* XXX: This is hard-coded! */ ?>
<lv:import package="/rater/core/tdat" />

<?php foreach ( $imports as $pkg ) { ?>
  <lv:import package="<?php echo $pkg; ?>" />
<?php } ?>

<lv:extern name="zip" type="param" dtype="integer" dim="1"
           missing="this territory package requires an available `zip' parameter; please
                    import a package that provides it" />

<lv:param name="<?php echo $param_name; ?>" type="<?php echo $param_type; ?>" default="0" set="vector" desc="Territory Override" />

<lv:typedef name="<?php echo $param_type; ?>" desc="<?php echo ucfirst( $name ); ?> Territories">
  <lv:enum type="integer">
    <?php $item_prefix = 'TERR_' . strtoupper( $name ) . '_'; ?>
    <lv:item name="<?php echo $item_prefix; ?>_NONE" value="0" desc="No Override" />
    <?php foreach ( $params as $id => $desc ) { ?>
      <?php $item_name = $item_prefix . $id; ?>
      <lv:item name="<?php echo $item_name; ?>" value="<?php echo gen_identifier_value( $id ); ?>" desc="<?php echo $desc; ?>" />
    <?php } ?>
  </lv:enum>
</lv:typedef>

<?php echo $classes; ?>

<lv:section title="Territory Determination">
  <?php foreach ( $ids as $id ) { ?>
    <?php $yields = sprintf( '%sTerr%s', $name, $id ); ?>
    <?php $class  = sprintf( '%s-terr%s', $name, gen_identifier( $id ) ); ?>
    <lv:apply-template name="_terr-code_" class="<?php echo $class; ?>" code="<?php echo gen_identifier_value( $id ); ?>" generates="<?php echo $yields; ?>" />
  <?php } ?>

  <lv:rate yields="_<?php echo $name; ?>TerrCode">
    <c:sum of="zip" index="k" generates="<?php echo $name; ?>TerrCode" desc="Territory code">
      <c:cases>
        <c:case>
          <c:when name="<?php echo $param_name; ?>" index="k">
            <c:gt>
              <c:const value="0" type="integer" desc="Use territory override if set" />
            </c:gt>
          </c:when>

          <c:value-of name="<?php echo $param_name; ?>" index="k" />
        </c:case>

        <c:otherwise>
          <c:sum label="Determine applicable territory code">
            <?php foreach ( $ids as $id ) { ?>
              <c:value-of name="<?php echo $name; ?>Terr<?php echo $id; ?>" index="k" />
            <?php } ?>
          </c:sum>
        </c:otherwise>
      </c:cases>
    </c:sum>
  </lv:rate>
</lv:section>
</lv:package>