package VCI::VCS::Cvs::File;
use Moose;

extends 'VCI::Abstract::File';

use constant CHECKOUT_HEADER => '=+\n.+?\nRCS:\s+.+?,v\nVERS: [\.\d]+\n\*+\n';

# XXX If we have a History, these two should probably just use latest_revision.

sub _build_revision {
    my $self = shift;
    my $output = $self->project->repository->vci->x_do(
        args    => ['-n', 'status', $self->name],
        fromdir => $self->parent->x_cvs_dir);
    $output =~ /^\s+Repository revision:\s([\d\.]+)/ms;
    return $1;
}

sub _build_time {
    my $self = shift;
    my $rev = $self->revision;
    my $output = $self->project->repository->vci->x_do(
        args => ['-n', 'log', '-N', "-r$rev", $self->name],
        fromdir => $self->parent->x_cvs_dir);
    $output =~ /^date: (\S+ \S+);/ms;
    my $time = $1;
    confess("Failed to parse time for " . $self->path->stringify . " $rev")
        if !defined $time;
    return "$time UTC";
}

sub _build_content {
    my $self = shift;
    my $rev = $self->revision;
    my $output = $self->project->repository->vci->x_do(
        args    => ['update', '-p', "-r$rev", $self->name],
        fromdir => $self->parent->x_cvs_dir);
    # CVS puts a header at the top of each file it checks out, when using
    # the -p argument. Sometimes (randomly) the header shows up at the bottom.
    my $header = CHECKOUT_HEADER;
    $output =~ s/^$header//s || $output =~ s/$header$//s;
    return $output;
}

__PACKAGE__->meta->make_immutable;

1;