add dumpstops command

lib/Travelynx/Command/dumpstops.pm

@@ -0,0 +1,50 @@
+package Travelynx::Command::dumpstops;
+
+# Copyright (C) 2024 Birte Kristina Friesel
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+use Mojo::Base 'Mojolicious::Command';
+use List::Util qw();
+use Text::CSV;
+
+has description => 'Export HAFAS/IRIS stops to CSV';
+
+has usage => sub { shift->extract_usage };
+
+sub run {
+	my ( $self, $command, $filename ) = @_;
+	my $db = $self->app->pg->db;
+
+	if ( not $command or not $filename ) {
+		$self->help;
+	}
+	elsif ( $command eq 'csv' ) {
+		open( my $fh, '>', $filename ) or die("open($filename): $!\n");
+
+		my $csv = Text::CSV->new( { eol => "\r\n" } );
+		$csv->combine(qw(name eva lat lon source archived));
+		print $fh $csv->string;
+
+		my $iter = $self->app->stations->get_db_iterator;
+		while ( my $row = $iter->hash ) {
+			$csv->combine( @{$row}{qw{name eva lat lon source archived}} );
+			print $fh $csv->string;
+		}
+		close($fh);
+	}
+	else {
+		$self->help;
+	}
+}
+
+1;
+
+__END__
+
+=head1 SYNOPSIS
+
+  Usage: index.pl dumpstops <format> <filename>
+
+  Exports known stops to <filename>.
+  Right now, only the "csv" format is supported.

lib/Travelynx/Model/Stations.pm

@@ -71,6 +71,12 @@ sub add_meta {
 	}
 }
 
+sub get_db_iterator {
+	my ($self) = @_;
+
+	return $self->{pg}->db->select( 'stations', '*' );
+}
+
 sub get_meta {
 	my ( $self, %opt ) = @_;
 	my $db  = $opt{db} // $self->{pg}->db;