# ABSTRACT: Revert stack to a prior revision
package Pinto::Action::Revert;
use Moose;
use MooseX::StrictConstructor;
use MooseX::Types::Moose qw(Bool);
use MooseX::MarkAsMethods ( autoclean => 1 );
use Pinto::Util qw(throw);
use Pinto::Types qw(RevisionID RevisionHead);
#------------------------------------------------------------------------------
our $VERSION = '0.0997'; # VERSION
#------------------------------------------------------------------------------
extends qw( Pinto::Action );
#------------------------------------------------------------------------------
with qw( Pinto::Role::Committable );
#------------------------------------------------------------------------------
has revision => (
is => 'ro',
isa => RevisionID | RevisionHead,
default => undef,
coerce => 1,
);
has force => (
is => 'ro',
isa => Bool,
default => 0,
);
#------------------------------------------------------------------------------
sub execute {
my ($self) = @_;
# Remember that the Committable role has already moved the head
# forward to a new revision which is a duplicate of the last head.
my $stack = $self->stack;
my $new_head = $stack->head;
my $old_head = ($new_head->parents)[0];
my $rev = $self->revision
? $self->repo->get_revision($self->revision)
: ($old_head->parents)[0];
throw "Cannot revert past the root commit"
if not $rev;
throw "Revision $rev is the head of stack $stack"
if $rev eq $old_head;
throw "Revision $rev is not an ancestor of stack $stack"
if !$rev->is_ancestor_of($old_head) && !$self->force;
$new_head->registrations_rs->delete;
$stack->duplicate_registrations(to => $new_head, from => $rev);
# We must explicitly mark the stack as changed, snce we injected the
# registrations directly. But it is possible that the new state is
# exactly the same as the old state. So we use the diff to be sure.
$stack->diff->is_different
? $stack->mark_as_changed
: throw "Revision $rev is identical to the head of stack $stack";
return 1;
}
#------------------------------------------------------------------------------
sub generate_message_title {
my ($self) = @_;
# TODO: fix duplication...
my $stack = $self->stack;
my $new_head = $stack->head;
my $old_head = ($new_head->parents)[0];
my $rev = $self->revision
? $self->repo->get_revision($self->revision)
: ($old_head->parents)[0];
return sprintf "Revert to %s: %s", $rev->uuid_prefix, $rev->message_title;
}
#------------------------------------------------------------------------------
__PACKAGE__->meta->make_immutable;
#------------------------------------------------------------------------------
1;
__END__
=pod
=encoding UTF-8
=for :stopwords Jeffrey Ryan Thalhammer BenRifkah Fowler Jakob Voss Karen Etheridge Michael
G. Bergsten-Buret Schwern Oleg Gashev Steffen Schwigon Tommy Stanton
Wolfgang Kinkeldei Yanick Boris Champoux brian d foy hesco popl Däppen Cory
G Watson David Steinbrunner Glenn
=head1 NAME
Pinto::Action::Revert - Revert stack to a prior revision
=head1 VERSION
version 0.0997
=head1 AUTHOR
Jeffrey Ryan Thalhammer <jeff@stratopan.com>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2014 by Jeffrey Ryan Thalhammer.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut