# Copyright (C) 2021 all contributors
# License: AGPL-3.0+
# front-end for the "lei export-kw" sub-command
package PublicInbox::LeiExportKw;
use strict;
use v5.10.1;
use parent qw(PublicInbox::IPC PublicInbox::LeiInput);
use Errno qw(EEXIST ENOENT);
use PublicInbox::Syscall qw(rename_noreplace);
sub export_kw_md { # LeiMailSync->each_src callback
my ($oidbin, $id, $self, $mdir) = @_;
my $sto_kw = $self->{lse}->oidbin_keywords($oidbin) or return;
my $bn = $$id;
my ($md_kw, $unknown, @try);
if ($bn =~ s/:2,([a-zA-Z]*)\z//) {
($md_kw, $unknown) = PublicInbox::MdirReader::flags2kw($1);
@try = qw(cur new);
} else {
$unknown = [];
@try = qw(new cur);
}
if ($self->{-merge_kw} && $md_kw) { # merging keywords is the default
@$sto_kw{keys %$md_kw} = values(%$md_kw);
}
$bn .= ':2,'.
PublicInbox::LeiToMail::kw2suffix([keys %$sto_kw], @$unknown);
return if $bn eq $$id;
my $dst = "$mdir/cur/$bn";
my $lei = $self->{lei};
for my $d (@try) {
my $src = "$mdir/$d/$$id";
if (rename_noreplace($src, $dst)) { # success
$self->{lms}->mv_src("maildir:$mdir",
$oidbin, $id, $bn);
return; # success
} elsif ($! == EEXIST) { # lost race with lei/store?
return;
} elsif ($! != ENOENT) {
$lei->child_error(1,
"E: rename_noreplace($src -> $dst): $!");
} # else loop @try
}
my $e = $!;
# both tries failed
my $oidhex = unpack('H*', $oidbin);
my $src = "$mdir/{".join(',', @try)."}/$$id";
$lei->child_error(1, "rename_noreplace($src -> $dst) ($oidhex): $e");
for (@try) { return if -e "$mdir/$_/$$id" }
$self->{lms}->clear_src("maildir:$mdir", $id);
}
sub export_kw_imap { # LeiMailSync->each_src callback
my ($oidbin, $id, $self, $mic) = @_;
my $sto_kw = $self->{lse}->oidbin_keywords($oidbin) or return;
$self->{imap_mod_kw}->($self->{nwr}, $mic, $id, [ keys %$sto_kw ]);
}
# overrides PublicInbox::LeiInput::input_path_url
sub input_path_url {
my ($self, $input, @args) = @_;
$self->{lms}->lms_write_prepare;
if ($input =~ /\Amaildir:(.+)/i) {
my $mdir = $1;
require PublicInbox::LeiToMail; # kw2suffix
$self->{lms}->each_src($input, \&export_kw_md, $self, $mdir);
} elsif ($input =~ m!\Aimaps?://!i) {
my $uri = PublicInbox::URIimap->new($input);
my $mic = $self->{nwr}->mic_for_folder($uri);
if ($mic && !$self->{nwr}->can_store_flags($mic)) {
my $m = "$input does not support PERMANENTFLAGS";
if (defined $self->{lei}->{opt}->{all}) {
$self->{lei}->qerr("# $m");
} else { # set error code if user explicitly requested
$self->{lei}->child_error(0, "E: $m");
}
return;
}
if ($mic) {
$self->{lms}->each_src($$uri, \&export_kw_imap,
$self, $mic);
$mic->expunge;
} else {
$self->{lei}->child_error(0, "$input unavailable: $@");
}
} else { die "BUG: $input not supported" }
}
sub lei_export_kw {
my ($lei, @folders) = @_;
my $sto = $lei->_lei_store or return $lei->fail(<lms or return $lei->fail(<{opt}->{all})) { # --all=
$lms->group2folders($lei, $all, \@folders) or return;
@folders = grep(/\A(?:maildir|imaps?):/i, @folders);
} else {
$lms->arg2folder($lei, \@folders); # may die
}
$lms->lms_pause;
my $self = bless { lse => $sto->search, lms => $lms }, __PACKAGE__;
$lei->{opt}->{'mail-sync'} = 1; # for prepare_inputs
$self->prepare_inputs($lei, \@folders) or return;
if (my @ro = grep(!/\A(?:maildir|imaps?):/i, @folders)) {
return $lei->fail("cannot export to read-only folders: @ro");
}
my $m = $lei->{opt}->{mode} // 'merge';
if ($m eq 'merge') { # default
$self->{-merge_kw} = 1;
} elsif ($m eq 'set') {
} else {
return $lei->fail(<{net}) {
require PublicInbox::NetWriter;
$self->{nwr} = bless $net, 'PublicInbox::NetWriter';
$self->{imap_mod_kw} = $net->can($self->{-merge_kw} ?
'imap_add_kw' : 'imap_set_kw');
$self->{nwr}->{-skip_creat} = 1;
}
$lei->{-err_type} = 'non-fatal';
$lei->wq1_start($self);
}
sub _complete_export_kw {
my ($lei, @argv) = @_;
my $lms = $lei->lms or return ();
my $match_cb = $lei->complete_url_prepare(\@argv);
# filter-out read-only sources:
my @k = grep(m!(?:maildir|imaps?):!,
$lms->folders($argv[-1] // undef, 1));
my @m = map { $match_cb->($_) } @k;
@m ? @m : @k;
}
no warnings 'once';
*ipc_atfork_child = \&PublicInbox::LeiInput::input_only_atfork_child;
*net_merge_all_done = \&PublicInbox::LeiInput::input_only_net_merge_all_done;
1;