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#!/usr/bin/perl

# Datenbankupgrade: Einfuehrung von Einheiten

die("This script cannot be run from the command line.") unless ($main::form);

sub mydberror {
my ($msg) = @_;
die($dbup_locale->text("Database update error:") .
"<br>$msg<br>" . $DBI::errstr);
}

sub myshowerror {
my ($msg) = @_;

print $main::form->parse_html_template("dbupgrade/units_error", { "message" => $msg });
return 2;
}

sub get_base_unit {
my ($units, $unit_name, $factor) = @_;

$factor = 1 unless ($factor);

my $unit = $units->{$unit_name};

if (!defined($unit) || !$unit->{"base_unit"} ||
($unit_name eq $unit->{"base_unit"})) {
return ($unit_name, $factor);
}

return get_base_unit($units, $unit->{"base_unit"}, $factor * $unit->{"factor"});
}

sub retrieve_units {
my ($myconfig, $form, $type, $prefix) = @_;

my $query = "SELECT *, base_unit AS original_base_unit FROM units";
my @values;
if ($type) {
$query .= " WHERE (type = ?)";
@values = ($type);
}

my $sth = $dbh->prepare($query);
$sth->execute(@values) || $form->dberror($query . " (" . join(", ", @values) . ")");

my $units = {};
while (my $ref = $sth->fetchrow_hashref()) {
$units->{$ref->{"name"}} = $ref;
}
$sth->finish();

my $query_lang = "SELECT id, template_code FROM language ORDER BY description";
$sth = $dbh->prepare($query_lang);
$sth->execute() || $form->dberror($query_lang);
my @languages;
while ($ref = $sth->fetchrow_hashref()) {
push(@languages, $ref);
}
$sth->finish();

foreach my $unit (values(%{$units})) {
($unit->{"${prefix}base_unit"}, $unit->{"${prefix}factor"}) = get_base_unit($units, $unit->{"name"});
}

return $units;
}

sub unit_select_data {
my ($units, $selected, $empty_entry) = @_;

my $select = [];

if ($empty_entry) {
push(@{$select}, { "name" => "", "base_unit" => "", "factor" => "", "selected" => "" });
}

foreach my $unit (sort({ lc($a) cmp lc($b) } keys(%{$units}))) {
push(@{$select}, { "name" => $unit,
"base_unit" => $units->{$unit}->{"base_unit"},
"factor" => $units->{$unit}->{"factor"},
"selected" => ($unit eq $selected) ? "selected" : "" });
}

return $select;
}

sub update_units_add_unit {
my $form = $main::form;

return 0 unless ($form->{"new_name"});

return myshowerror($dbup_locale->text("The name is missing."))
if ($form->{"new_name"} eq "");
my $units = retrieve_units(\%dbup_myconfig, $form);
return myshowerror($dbup_locale->text("A unit with this name does already exist."))
if ($units->{$form->{"new_name"}});
$units = retrieve_units(\%dbup_myconfig, $form, $form->{"unit_type"});

my ($base_unit, $factor);
if ($form->{"new_base_unit"}) {
return myshowerror($dbup_locale->text("The base unit does not exist."))
unless (defined($units->{$form->{"new_base_unit"}}));

return myshowerror($dbup_locale->text("The factor is missing."))
if ($form->{"new_factor"} eq "");
$factor = $form->parse_amount(\%dbup_myconfig, $form->{"new_factor"});
return myshowerror($dbup_locale->text("The factor is missing."))
unless ($factor);
$base_unit = $form->{"new_base_unit"};
}

my $query = "INSERT INTO units " .
"(name, base_unit, factor, type) " .
"VALUES (?, ?, ?, ?)";
$dbh->do($query, undef, $form->{"new_name"}, $base_unit, $factor,
$form->{"unit_type"}) ||
mydberror($query .
" ($form->{new_name}, $base_unit, $factor, $form->{unit_type})");
$dbh->commit();
$dbh->begin_work();

$form->{"saved_message"} = $dbup_locale->text("The unit has been saved.");

return 0;
}

sub update_units_assign_units {
my ($query, $sth, @values);

my $form = $main::form;

foreach my $table (qw(parts invoice orderitems rmaitems)) {
$query = "UPDATE $table SET unit = ? WHERE lower(unit) = ?";
$sth = $dbh->prepare($query);

for (my $i = 1; $i <= $form->{"rowcount"}; $i++) {
next unless ($form->{"new_unit_$i"} && $form->{"old_unit_$i"});
@values = ($form->{"new_unit_$i"}, lc($form->{"old_unit_$i"}));
$sth->execute(@values) ||
mydberror($query . " (" . join(", ", @values) . ")");
}
}

$sth->finish();
$dbh->commit();
$dbh->begin_work();
}

sub update_units_assign_known {
my $form = $main::form;

my %unit_name_mapping = (
"st" => "Stck",
"st." => "Stck",
"stk" => "Stck",
"pc" => "Stck",
"pcs" => "Stck",
"ea" => "Stck",

"h" => "Std",
"stunde" => "Std",
"tage" => "Tag",
);

my $i = 1;
foreach my $k (keys(%unit_name_mapping)) {
$form->{"old_unit_$i"} = $k;
$form->{"new_unit_$i"} = $unit_name_mapping{$k};
$i++;
}
$form->{"rowcount"} = scalar(keys(%unit_name_mapping));

update_units_assign_units();
}

sub update_units_steps_1_2 {
my (%unknown_dimension_units, %unknown_service_units);

my $form = $main::form;

foreach my $table (qw(parts invoice orderitems rmaitems)) {
my ($query, $sth, $ref);

if ($table eq "parts") {
$query = "SELECT unit, inventory_accno_id, assembly FROM parts " .
"WHERE NOT ((unit = '') OR unit ISNULL OR " .
" unit IN (SELECT name FROM units))";

} else {
$query = "SELECT t.unit, p.inventory_accno_id, p.assembly " .
"FROM $table t " .
"LEFT JOIN parts p ON p.id = t.parts_id " .
"WHERE NOT ((t.unit = '') OR t.unit ISNULL OR " .
" t.unit IN (SELECT name FROM units))";
}
$sth = $dbh->prepare($query);
$sth->execute() || mydberror($query);

while ($ref = $sth->fetchrow_hashref()) {
if ($ref->{"inventory_accno_id"} || $ref->{"assembly"}) {
$unknown_dimension_units{$ref->{"unit"}} = 1;

} else {
$unknown_service_units{$ref->{"unit"}} = 1;
}
}

$sth->finish();
}

if (scalar(keys(%unknown_dimension_units)) != 0) {
my $units = retrieve_units(\%dbup_myconfig, $form, "dimension");
my $ddbox = unit_select_data($units, undef, 1);

my @unknown_parts;
map({ push(@unknown_parts, { "name" => $_, "NEW_UNITS" => $ddbox }); }
sort({ lc($a) cmp lc($b) } keys(%unknown_dimension_units)));

print $form->parse_html_template("dbupgrade/units_parts",
{ "NEW_BASE_UNIT_DDBOX" => $ddbox,
"UNKNOWN_PART_UNITS" => \@unknown_parts,
});

return 2;

} else {
print $form->parse_html_template("dbupgrade/units_parts_done");
}

if (scalar(keys(%unknown_service_units)) != 0) {
my $units = retrieve_units(\%dbup_myconfig, $form, "service");
my $ddbox = unit_select_data($units, undef, 1);

my @unknown_services;
map({ push(@unknown_services, { "name" => $_, "NEW_UNITS" => $ddbox }); }
sort({ lc($a) cmp lc($b) } keys(%unknown_service_units)));

print $form->parse_html_template("dbupgrade/units_services",
{ "NEW_BASE_UNIT_DDBOX" => $ddbox,
"UNKNOWN_PART_UNITS" => \@unknown_services,
});

return 2;

} else {
print $form->parse_html_template("dbupgrade/units_services_done");
}

return 0;
}

sub update_units_step_3 {
my $form = $main::form;

my $query = "SELECT ";
foreach my $table (qw(parts invoice orderitems rmaitems)) {
$query .= "(SELECT COUNT(*) FROM $table " .
"WHERE (unit ISNULL) OR (unit = '')) +";
}
substr($query, -1, 1) = "AS has_unassigned";
my ($has_unassigned) = $dbh->selectrow_array($query);

if ($has_unassigned) {
my $dimension_units = retrieve_units(\%dbup_myconfig, $form,
"dimension");
my $dimension_ddbox = unit_select_data($dimension_units);

my $service_units = retrieve_units(\%dbup_myconfig, $form, "service");
my $service_ddbox = unit_select_data($service_units);

print $form->parse_html_template("dbupgrade/units_set_default",
{ "DIMENSION_DDBOX" => $dimension_ddbox,
"SERVICE_DDBOX" => $service_ddbox });
return 2;

} else {
print $form->parse_html_template("dbupgrade/units_set_default_done");
return 1;
}
}

sub update_units_set_default {
my $form = $main::form;

foreach my $table (qw(parts invoice orderitems rmaitems)) {
my $base_query = "UPDATE $table SET unit = " .
$dbh->quote($form->{"default_service_unit"}) . " " .
"WHERE ((unit ISNULL) OR (unit = '')) AND ";
my $query;

if ($table eq "parts") {
$query = "UPDATE $table SET unit = " .
$dbh->quote($form->{"default_dimension_unit"}) . " " .
"WHERE ((unit ISNULL) OR (unit = '')) AND " .
"(assembly OR (inventory_accno_id > 0))";
} else {
$query = "UPDATE $table SET unit = " .
$dbh->quote($form->{"default_dimension_unit"}) . " " .
"WHERE ((unit ISNULL) OR (unit = '')) AND " .
"parts_id IN (SELECT id FROM parts WHERE " .
"(assembly OR (inventory_accno_id > 0)))";
}

$dbh->do($query) || mydberror($query);

if ($table eq "parts") {
$query = "UPDATE $table SET unit = " .
$dbh->quote($form->{"default_service_unit"}) . " " .
"WHERE ((unit ISNULL) OR (unit = '')) AND " .
"((inventory_accno_id ISNULL) OR (inventory_accno_id = 0)) AND " .
"NOT assembly";
} else {
$query = "UPDATE $table SET unit = " .
$dbh->quote($form->{"default_service_unit"}) . " " .
"WHERE ((unit ISNULL) OR (unit = '')) AND " .
"parts_id IN (SELECT id FROM parts " .
"WHERE ((inventory_accno_id ISNULL) OR (inventory_accno_id = 0)) " .
"AND NOT assembly)";
}

$dbh->do($query) || mydberror($query);
}
}

sub update_units {
my $form = $main::form;

my $res;

print $form->parse_html_template("dbupgrade/units_header");

if ($form->{"action2"} eq "add_unit") {
$res = update_units_add_unit();
return $res if ($res);

} elsif ($form->{"action2"} eq "assign_units") {
update_units_assign_units();

} elsif ($form->{"action2"} eq "set_default") {
update_units_set_default();

}

update_units_assign_known();

$res = update_units_steps_1_2();
return $res if ($res);

return update_units_step_3();
}

update_units();
(22-22/42)