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kivitendo/SL/ReportGenerator.pm @ afe6d1f6

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package SL::ReportGenerator;

use IO::Wrap;
use Text::CSV_XS;

use SL::Form;

sub new {
my $type = shift;

my $self = { };

$self->{myconfig} = shift;
$self->{form} = shift;

$self->{data} = [];
$self->{options} = {
'std_column_visibility' => 0,
'output_format' => 'HTML',
'allow_pdf_export' => 1,
'allow_csv_export' => 1,
'pdf_export' => {
'paper_size' => 'A4',
'orientation' => 'landscape',
'font_size' => '10',
'margin_top' => 1.5,
'margin_left' => 1.5,
'margin_bottom' => 1.5,
'margin_right' => 1.5,
'number' => 1,
},
'csv_export' => {
'quote_char' => '"',
'sep_char' => ';',
'escape_char' => '"',
'eol_style' => 'DOS',
'headers' => 1,
},
};
$self->{export} = {
'nextsub' => '',
'variable_list' => '',
};

$self->set_options(@_) if (@_);

return bless $self, $type;
}

sub set_columns {
my $self = shift;
my %columns = @_;

$self->{columns} = \%columns;

foreach my $column (values %{ $self->{columns} }) {
$column->{visible} = $self->{options}->{std_column_visibility} unless defined $column->{visible};
}

$self->set_column_order(sort keys %{ $self->{columns} });
}

sub set_column_order {
my $self = shift;

my $order = 0;
my %columns = map { $order++; ($_, $order) } @_;

foreach my $column (sort keys %{ $self->{columns} }) {
next if $columns{$column};

$order++;
$columns{$column} = $order;
}

$self->{column_order} = [ sort { $columns{$a} <=> $columns{$b} } keys %columns ];
}

sub set_sort_indicator {
my $self = shift;

$self->{options}->{sort_indicator_column} = shift;
$self->{options}->{sort_indicator_direction} = shift;
}

sub add_data {
my $self = shift;

while (my $arg = shift) {
if ('ARRAY' eq ref $arg) {
push @{ $self->{data} }, $arg;

} elsif ('HASH' eq ref $arg) {
push @{ $self->{data} }, [ $arg ];

} else {
$self->{form}->error('Incorrect usage -- expecting hash or array ref');
}
}
}

sub clear_data {
my $self = shift;

$self->{data} = [];
}

sub set_options {
my $self = shift;
my %options = @_;

map { $self->{options}->{$_} = $options{$_} } keys %options;
}

sub set_options_from_form {
my $self = shift;

my $form = $self->{form};
my $myconfig = $self->{myconfig};

foreach my $key (qw(output_format)) {
my $full_key = "report_generator_${key}";
$self->{options}->{$key} = $form->{$full_key} if (defined $form->{$full_key});
}

foreach my $format (qw(pdf csv)) {
my $opts = $self->{options}->{"${format}_export"};
foreach my $key (keys %{ $opts }) {
my $full_key = "report_generator_${format}_options_${key}";
$opts->{$key} = $key =~ /^margin/ ? $form->parse_amount($myconfig, $form->{$full_key}) : $form->{$full_key};
}
}
}

sub set_export_options {
my $self = shift;

$self->{export} = {
'nextsub' => shift,
'variable_list' => join(" ", @_),
};
}

sub generate_content {
my $self = shift;
my $format = lc $self->{options}->{output_format};

if (!$self->{columns}) {
$self->{form}->error('Incorrect usage -- no columns specified');
}

if ($format eq 'html') {
return $self->generate_html_content();

} elsif ($format eq 'csv') {
return $self->generate_csv_content();

} elsif ($format eq 'pdf') {
return $self->generate_pdf_content();

} else {
$self->{form}->error('Incorrect usage -- unknown format (supported are HTML, CSV, PDF)');
}
}

sub generate_with_headers {
my $self = shift;
my $format = lc $self->{options}->{output_format};

if (!$self->{columns}) {
$self->{form}->error('Incorrect usage -- no columns specified');
}

my $filename = $self->{options}->{attachment_basename} || 'report';
$filename =~ s|.*\\||;
$filename =~ s|.*/||;

if ($format eq 'html') {
$self->{form}->{title} = $self->{title};
$self->{form}->header();
print $self->generate_html_content();

} elsif ($format eq 'csv') {
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print qq|content-type: text/csv\n|;
print qq|content-disposition: attachment; filename=${filename}.csv\n\n|;
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$self->generate_csv_content();

} elsif ($format eq 'pdf') {
print qq|content-type: application/pdf\n|;
print qq|content-disposition: attachment; filename=${filename}.pdf\n\n|;
$self->generate_pdf_content();

} else {
$self->{form}->error('Incorrect usage -- unknown format (supported are HTML, CSV, PDF)');
}
}

sub get_visible_columns {
my $self = shift;
my $format = shift;

return grep { my $c = $self->{columns}->{$_}; $c && $c->{visible} && (($c->{visible} == 1) || ($c->{visible} =~ /${format}/i)) } @{ $self->{column_order} };
}

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sub html_format {
my $self = shift;
my $value = shift;

$value = $self->{form}->quote_html($value);
$value =~ s/\r//g;
$value =~ s/\n/<br>/g;

return $value;
}

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sub prepare_html_content {
my $self = shift;

my ($column, $name, @column_headers);

my $opts = $self->{options};
my @visible_columns = $self->get_visible_columns('HTML');

foreach $name (@visible_columns) {
$column = $self->{columns}->{$name};

my $header = {
'name' => $name,
'link' => $column->{link},
'text' => $column->{text},
'show_sort_indicator' => $name eq $opts->{sort_indicator_column},
'sort_indicator_direction' => $opts->{sort_indicator_direction},
};

push @column_headers, $header;
}

my ($outer_idx, $inner_idx) = (0, 0);
my @rows;

foreach my $row_set (@{ $self->{data} }) {
$outer_idx++;

foreach my $row (@{ $row_set }) {
$inner_idx++;

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map { $row->{$_}->{data} = $self->html_format($row->{$_}->{data}) } @visible_columns;

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my $row_data = {
'COLUMNS' => [ map { $row->{$_} } @visible_columns ],
'outer_idx' => $outer_idx,
'outer_idx_odd' => $outer_idx % 2,
'inner_idx' => $inner_idx,
};

push @rows, $row_data;
}
}

my @export_variables;
foreach my $key (split m/ +/, $self->{export}->{variable_list}) {
push @export_variables, { 'key' => $key, 'value' => $self->{form}->{$key} };
}

my $allow_pdf_export = $opts->{allow_pdf_export} && (-x $main::html2ps_bin) && (-x $main::ghostscript_bin);

my $variables = {
'TITLE' => $opts->{title},
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'TOP_INFO_TEXT' => $self->html_format($opts->{top_info_text}),
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'RAW_TOP_INFO_TEXT' => $opts->{raw_top_info_text},
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'BOTTOM_INFO_TEXT' => $self->html_format($opts->{bottom_info_text}),
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'RAW_BOTTOM_INFO_TEXT' => $opts->{raw_bottom_info_text},
'ALLOW_PDF_EXPORT' => $allow_pdf_export,
'ALLOW_CSV_EXPORT' => $opts->{allow_csv_export},
'SHOW_EXPORT_BUTTONS' => $allow_pdf_export || $opts->{allow_csv_export},
'COLUMN_HEADERS' => \@column_headers,
'NUM_COLUMNS' => scalar @column_headers,
'ROWS' => \@rows,
'EXPORT_VARIABLES' => \@export_variables,
'EXPORT_VARIABLE_LIST' => $self->{export}->{variable_list},
'EXPORT_NEXTSUB' => $self->{export}->{nextsub},
};

return $variables;
}

sub generate_html_content {
my $self = shift;
my $variables = $self->prepare_html_content();

return $self->{form}->parse_html_template('report_generator/html_report', $variables);
}

sub verify_paper_size {
my $self = shift;
my $requested_paper_size = lc shift;
my $default_paper_size = shift;

my %allowed_paper_sizes = map { $_ => 1 } qw(a3 a4 letter legal);

return $allowed_paper_sizes{$requested_paper_size} ? $requested_paper_size : $default_paper_size;
}

sub generate_pdf_content {
my $self = shift;
my $variables = $self->prepare_html_content();
my $form = $self->{form};
my $myconfig = $self->{myconfig};
my $opt = $self->{options}->{pdf_export};

my $opt_number = $opt->{number} ? 'number : 1' : '';
my $opt_landscape = $opt->{orientation} eq 'landscape' ? 'landscape : 1' : '';

my $opt_paper_size = $self->verify_paper_size($opt->{paper_size}, 'a4');

my $html2ps_config = <<"END"
\@html2ps {
option {
titlepage: 0;
hyphenate: 0;
colour: 1;
${opt_landscape};
${opt_number};
}
paper {
type: ${opt_paper_size};
}
break-table: 1;
}

\@page {
margin-top: $opt->{margin_top}cm;
margin-left: $opt->{margin_left}cm;
margin-bottom: $opt->{margin_bottom}cm;
margin-right: $opt->{margin_right}cm;
}

BODY {
font-family: Helvetica;
font-size: $opt->{font_size}pt;
}

END
;

my $cfg_file_name = Common::tmpname() . '-html2ps-config';
my $cfg_file = IO::File->new($cfg_file_name, 'w') || $form->error($locale->text('Could not write the html2ps config file.'));

$cfg_file->print($html2ps_config);
$cfg_file->close();

my $html_file_name = Common::tmpname() . '.html';
my $html_file = IO::File->new($html_file_name, 'w');

if (!$html_file) {
unlink $cfg_file_name;
$form->error($locale->text('Could not write the temporary HTML file.'));
}

$html_file->print($form->parse_html_template('report_generator/pdf_report', $variables));
$html_file->close();

my $gs = IO::File->new("\"${main::html2ps_bin}\" -f \"${cfg_file_name}\" \"${html_file_name}\" | " .
"\"${main::ghostscript_bin}\" -q -dSAFER -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=${opt_paper_size} -sOutputFile=- -c .setpdfwrite - |");
if ($gs) {
while (my $line = <$gs>) {
print $line;
}
$gs->close();
unlink $cfg_file_name, $html_file_name;

} else {
unlink $cfg_file_name, $html_file_name;
$form->error($locale->text('Could not spawn html2ps or GhostScript.'));
}
}

sub generate_csv_content {
my $self = shift;

my %valid_sep_chars = (';' => ';', ',' => ',', ':' => ':', 'TAB' => "\t");
my %valid_escape_chars = ('"' => 1, "'" => 1);
my %valid_quote_chars = ('"' => 1, "'" => 1);

my $opts = $self->{options}->{csv_export};
my $eol = $opts->{eol_style} eq 'DOS' ? "\r\n" : "\n";
my $sep_char = $valid_sep_chars{$opts->{sep_char}} ? $valid_sep_chars{$opts->{sep_char}} : ';';
my $escape_char = $valid_escape_chars{$opts->{escape_char}} ? $opts->{escape_char} : '"';
my $quote_char = $valid_quote_chars{$opts->{quote_char}} ? $opts->{quote_char} : '"';

$escape_char = $quote_char if ($opts->{escape_char} eq 'QUOTE_CHAR');

my $csv = Text::CSV_XS->new({ 'binary' => 1,
'sep_char' => $sep_char,
'escape_char' => $escape_char,
'quote_char' => $quote_char,
'eol' => $eol, });

my $stdout = wraphandle(\*STDOUT);
my @visible_columns = $self->get_visible_columns('CSV');

if ($opts->{headers}) {
$csv->print($stdout, [ map { $self->{columns}->{$_}->{text} } @visible_columns ]);
}

foreach my $row_set (@{ $self->{data} }) {
foreach my $row (@{ $row_set }) {
$csv->print($stdout, [ map { $row->{$_}->{data} } @visible_columns ]);
}
}
}

1;