# BEGIN BPS TAGGED BLOCK {{{
# COPYRIGHT:
# 
# This software is Copyright (c) 2003-2008 Best Practical Solutions, LLC
#                                          <clkao@bestpractical.com>
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# (Except where explicitly superseded by other copyright notices)
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# 
# LICENSE:
# 
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of either:
# 
#   a) Version 2 of the GNU General Public License.  You should have
#      received a copy of the GNU General Public License along with this
#      program.  If not, write to the Free Software Foundation, Inc., 51
#      Franklin Street, Fifth Floor, Boston, MA 02110-1301 or visit
#      their web page on the internet at
#      http://www.gnu.org/copyleft/gpl.html.
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#   b) Version 1 of Perl's "Artistic License".  You should have received
#      a copy of the Artistic License with this package, in the file
#      named "ARTISTIC".  The license is also available at
#      http://opensource.org/licenses/artistic-license.php.
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# This work is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# CONTRIBUTION SUBMISSION POLICY:
# 
# (The following paragraph is not intended to limit the rights granted
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# END BPS TAGGED BLOCK }}}
package SVK::Root::Checkout;
use strict;
use SVK::Util qw(abs2rel md5_fh is_symlink from_native to_native );

use base qw{ Class::Accessor::Fast };

__PACKAGE__->mk_accessors(qw(path));

sub file_contents {
    my ($self, $path, $pool) = @_;
    my ($copath, $root) = $self->_get_copath($path, $pool);
    return SVK::XD::get_fh($root, '<', $path, $copath);
}

sub file_md5_checksum {
    my ($self, $path, $pool) = @_;
    my $fh = $self->file_contents($path, $pool);
    return md5_fh($fh);
}

sub check_path {
    my ($self, $path, $pool) = @_;
    my ($copath,$root) = $self->_get_copath($path, $pool);

    lstat ($copath);
    return $SVN::Node::none unless -e _;

    return (is_symlink || -f _) ? $SVN::Node::file : $SVN::Node::dir
	if $self->path->xd->{checkout}->get($copath, 1)->{'.schedule'} or
	    $root->check_path($path, $pool);
    return $SVN::Node::unknown;
}

sub node_prop { 
    my ($self, $path, $propname, $pool) = @_;
    return $self->node_proplist($path, $pool)->{$propname};
}

sub node_proplist { 
    my ($self, $path, $pool) = @_;
    my ($copath,$root) = $self->_get_copath($path, $pool);
    return $self->path->xd->get_props($root, $path, $copath);
}

sub node_created_rev {
    my ($self, $path, $pool) = @_;
    my ($copath, $root) = $self->_get_copath($path, $pool);
    # ({ kind => $self->path->xd->{checkout}->get($copath)->{'.schedule'} ?
    # XXX: fails on really unknown?
    return $root->check_path($path, $pool) ? $root->node_created_rev($path, $pool) : undef;
}

sub closest_copy {
    my ($self, $path, $pool) = @_;
    my ($copath, $root) = $self->_get_copath($path, $pool);
    my $entry = $self->path->xd->{checkout}->get($copath, 1);
    my $kind = $entry->{'.schedule'} || '';

    return $root->closest_copy($path, $pool) unless $kind eq 'add';

    return ($self, $entry->{scheduleanchor}) if $entry->{scheduleanchor} && $entry->{'.copyfrom'};
}

sub copied_from {
    my ($self, $path, $pool) = @_;
    my ($copath, $root) = $self->_get_copath($path, $pool);
    my $entry = $self->path->xd->{checkout}->get($copath, 1);
    my $kind = $entry->{'.schedule'};

    return $root->copied_from($path, $pool) unless $kind eq 'add';
    my ($source_path, $source_rev) = $self->path->xd->_copy_source($entry, $copath);
    return ($source_rev, $source_path);
}

sub node_history {
    my ($self, $path, $pool) = @_;
    my ($copath, $root) = $self->_get_copath($path, $pool);
    my $entry = $self->path->xd->{checkout}->get($copath, 1);
    my $kind = $entry->{'.schedule'} || '';

    return $root->node_history($path, $pool) unless $kind eq 'add';

    if ($entry->{scheduleanchor} && $entry->{'.copyfrom'}) {
       my $hist = $root->node_history($entry->{scheduleanchor}, $pool);
       my %info = ( revision => $root->revision_root_revision, path => $path );
       my $rhist = SVK::Root::Checkout::History->new( { _prev => $hist, %info });
       return SVK::Root::Checkout::History->new( { _init => 1, _prev => $rhist, %info });
    }
    Carp::confess "dunno what to do yet"; # XXX
}

sub dir_entries {
    my ($self, $path, $pool) = @_;
    my ($copath,$root) = $self->_get_copath($path, $pool);

    my $entries = $root->dir_entries($path, $pool);
    my $coentries;
    opendir my ($dir), $copath or die "$copath: $!";
    for (readdir($dir)) {
	next if m/^\.+$/;
	lstat $_;
	my $kind = -d _ ? $SVN::Node::dir : $SVN::Node::file;
	if ($entries->{$_}) {
	    $coentries->{$_} = $entries->{$_};
	}
	else {
	    # Do we know about the node?
	    $coentries->{$_} = SVK::Root::Checkout::Entry->new
		({ kind => $self->path->xd->{checkout}->get("$copath/$_", 1)->{'.schedule'} ?
		   $kind : $SVN::Node::unknown });
	}
    }

    return $coentries;
}

sub fs {
    $_[0]->path->repos->fs;
}

sub AUTOLOAD {
    my ($self, $path) = @_;
    our $AUTOLOAD;
    my $func = $AUTOLOAD;
    $func =~ s/^.*:://;
    return if $func =~ m/^[A-Z]/;
    die "$self $AUTOLOAD $path";
}

sub _get_copath {
    my ($self, $path, $pool) = @_;
    # XXX: copath shouldn't be copath_anchor!
    my $copath = $self->path->copath; $copath = "$copath";
    from_native($copath);
    $copath = abs2rel($path, $self->path->path_anchor => $copath);
    to_native($copath);
    my $root;
    ($root, $_[1]) = $self->path->source->root->get_revision_root
	($path, $self->path->xd->{checkout}->get($copath, 1)->{revision}, $pool);
    return ($copath, $root);
}

# Currently unimplemented svn_fs_root methods:
# (forbid the txnroot-specific methods)
# is_txn_root
# is_revision_root
# txn_root_name
# revision_root_revision
# paths_changed
# is_dir
# is_file
# node_id
# node_created_path
# change_node_prop
# props_changed
# merge
# make_dir
# delete
# copy
# revision_link
# file_length
# make_file
# apply_textdelta
# apply_text
# contents_changed
# get_file_delta_stream


package SVK::Root::Checkout::Entry;
use base 'Class::Accessor::Fast';
__PACKAGE__->mk_accessors(qw(kind));

sub AUTOLOAD {
    my ($self) = @_;
    our $AUTOLOAD;
    my $func = $AUTOLOAD;
    $func =~ s/^.*:://;
    return if $func =~ m/^[A-Z]/;
    die "$self $AUTOLOAD";
}

package SVK::Root::Checkout::History;
use base 'Class::Accessor::Fast';
__PACKAGE__->mk_accessors(qw(path revision _init _prev));

sub location { ($_[0]->path, $_[0]->revision) }

sub prev { return $_[0]->_prev if $_[0]->_init || $_[1] }


1;