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lib/App/Chart/Suffix/MGEX.pm  view on Meta::CPAN

# intraday
#
# Alternately to do it with the main App::Chart::Barchart
#     $App::Chart::Barchart::intraday_pred->add ($pred);
#

barchart_customer_intraday
  ($pred,
   'http://customer1.barchart.com/cgi-bin/mri/mgexchart.htx?page=chart&code=mfo&org=com&crea=Y');

#  (lambda (symbol)
#    (let ((date-time (mgex-quote-adate-time symbol)))
#      (set-first! date-time (adate->tdate (first date-time)))))

#------------------------------------------------------------------------------
# The charts at KCBT and MGEX come from barchart.com and are the same style
# as barchart itself, ie. download a page which contains a generated
# 4-digit numbered .gif file.  The links from www.kcbt.com and www.mgex.com
# are preferred though, since the pages to get that gif file are only
# 26kbytes instead of 50k from barchart.com's native links.
#
# Z10 MEDHI gives 7 days, Z05 MED gives 1.5 or 2, Z10 HIGH gives about 10 days

sub barchart_customer_intraday {
  my ($pred, $base_url, $tdate_time_proc) = @_;

  require App::Chart::IntradayHandler;
  App::Chart::IntradayHandler->new
      (pred => $pred,
       proc => \&barchart_customer_url,
       mode => '1.5d',
       name => __('_1 1/2 Days'),
       base_url => $base_url);
  App::Chart::IntradayHandler->new
      (pred => $pred,
       proc => \&barchart_customer_url,
       mode => '7d',
       name => __nx('_{n} Day',
                    '_{n} Days',
                    7,
                    n => 7),
       base_url => $base_url);
}

my %intraday_mode_to_data = ('1.5d' => '&data=Z05', # 5 minute, linear scale
                             '7d'   => '&data=Z10&den=MEDHI');

sub barchart_customer_url {
  my ($self, $symbol, $mode) = @_;

  # my $mdate = latest_symbol_mdate ($symbol, ($tdate_time_proc->())[0]);
  # mdate_to_MYY ($mdate);

  App::Chart::Download::status
      (__x('Intraday page {symbol} {mode}',
           symbol => $symbol,
           mode   => $mode));

  my $url = $self->{'base_url'}
    . '&sly=N&sym='
      . URI::Escape::uri_escape (App::Chart::symbol_sans_suffix ($symbol))
        . $intraday_mode_to_data{$mode};
  App::Chart::Download::verbose_message ("Intraday page", $url);

  my $resp = App::Chart::Download->get ($url);
  return barchart_customer_resp_to_url ($resp, $symbol);
}
# separate func for offline testing ...
sub barchart_customer_resp_to_url {
  my ($resp, $symbol) = @_;
  my $content = $resp->decoded_content (raise_error => 1);

  # This doesn't use java_document_write() (in Finance::Quote::MGEX) and
  # HTML::LinkExtor because the width/height in the document.write() in the
  # <img> bit is computed, which java_document_write() can't handle.  The
  # src="" part of it is constant though.  There's only a single <img> to
  # pick out.
  if ($content =~ /<img src="([^"]+)"/i) {
    return $1;  # url
  }
  if ($content =~ /no chart available/i) {
    die __x("No chart available for {symbol}\n",
            symbol => $symbol);
  }
  die 'Barchart Customer: Intraday page not matched';
}

1;
__END__