From a34a67b2f9127440860eb7228b295c17e592d6c8 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Mon, 13 Sep 2021 20:55:11 +0200
Subject: Add account add / delete CLI for sites with web registration disabled

---
 lib/Travelynx/Command/account.pm | 125 +++++++++++++++++++++++++++++++++++++++
 lib/Travelynx/Model/Users.pm     |  10 +++-
 2 files changed, 133 insertions(+), 2 deletions(-)
 create mode 100644 lib/Travelynx/Command/account.pm

diff --git a/lib/Travelynx/Command/account.pm b/lib/Travelynx/Command/account.pm
new file mode 100644
index 0000000..6cd3498
--- /dev/null
+++ b/lib/Travelynx/Command/account.pm
@@ -0,0 +1,125 @@
+package Travelynx::Command::account;
+
+# Copyright (C) 2021 Daniel Friesel
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+use Mojo::Base 'Mojolicious::Command';
+use Crypt::Eksblowfish::Bcrypt qw(bcrypt en_base64);
+use UUID::Tiny qw(:std);
+
+has description => 'Add or remove user accounts';
+
+has usage => sub { shift->extract_usage };
+
+sub hash_password {
+	my ($password) = @_;
+	my @salt_bytes = map { int( rand(255) ) + 1 } ( 1 .. 16 );
+	my $salt       = en_base64( pack( 'C[16]', @salt_bytes ) );
+
+	return bcrypt( $password, '$2a$12$' . $salt );
+}
+
+sub add_user {
+	my ( $self, $name, $email ) = @_;
+
+	my $db = $self->app->pg->db;
+
+	if ( my $error = $self->app->users->is_name_invalid( name => $name ) ) {
+		say "Cannot add account '$name': $error";
+		die;
+	}
+
+	my $token         = "tmp";
+	my $password      = substr( create_uuid_as_string(UUID_V4), 0, 18 );
+	my $password_hash = hash_password($password);
+
+	my $tx      = $db->begin;
+	my $user_id = $self->app->users->add_user(
+		db            => $db,
+		name          => $name,
+		email         => $email,
+		token         => $token,
+		password_hash => $password_hash,
+	);
+	my $success = $self->app->users->verify_registration_token(
+		db             => $db,
+		uid            => $user_id,
+		token          => $token,
+		in_transaction => 1,
+	);
+
+	if ($success) {
+		$tx->commit;
+		say "Added user $name ($email) with UID $user_id";
+		say "Temporary password for login: $password";
+	}
+}
+
+sub delete_user {
+	my ( $self, $uid ) = @_;
+
+	my $user_data = $self->app->users->get_data( uid => $uid );
+
+	if ( not $user_data ) {
+		say "UID $uid does not exist.";
+		return;
+	}
+
+	$self->app->users->flag_deletion( uid => $uid );
+
+	say "User $user_data->{name} (UID $uid) has been flagged for deletion.";
+}
+
+sub really_delete_user {
+	my ( $self, $uid, $name ) = @_;
+
+	my $user_data = $self->app->users->get_data( uid => $uid );
+
+	if ( $user_data->{name} ne $name ) {
+		say
+		  "User name $name does not match UID $uid. Account deletion aborted.";
+		return;
+	}
+
+	say "Immediate deletion is not implemented yet.";
+	return;
+}
+
+sub run {
+	my ( $self, $command, @args ) = @_;
+
+	if ( $command eq 'add' ) {
+		$self->add_user(@args);
+	}
+	elsif ( $command eq 'delete' ) {
+		$self->delete_user(@args);
+	}
+	elsif ( $command eq 'DELETE' ) {
+		$self->really_delete_user(@args);
+	}
+	else {
+		$self->help;
+	}
+}
+
+1;
+
+__END__
+
+=head1 SYNOPSIS
+
+  Usage: index.pl account add [name] [email]
+
+  Adds user [name] with a temporary password, which is shown on stdout.
+  Users can change the password once logged in.
+
+  Usage: index.pl account delete [uid]
+
+  Request deletion of user [uid]. This has the same effect as using the
+  account deletion button. The user account and all corresponding data will
+  be deleted by a maintenance run after three days.
+
+  Usage: index.pl account DELETE [uid] [name]
+
+  Immediately delete user [uid]/[name] and all associated data. Deletion is
+  irrevocable. Deletion is only performed if [name] matches the name of [uid].
diff --git a/lib/Travelynx/Model/Users.pm b/lib/Travelynx/Model/Users.pm
index 535b938..1371b8a 100644
--- a/lib/Travelynx/Model/Users.pm
+++ b/lib/Travelynx/Model/Users.pm
@@ -34,7 +34,11 @@ sub verify_registration_token {
 	my $token = $opt{token};
 	my $db    = $opt{db} // $self->{pg}->db;
 
-	my $tx = $db->begin;
+	my $tx;
+
+	if ( not $opt{in_transaction} ) {
+		$tx = $db->begin;
+	}
 
 	my $res = $db->select(
 		'pending_registrations',
@@ -48,7 +52,9 @@ sub verify_registration_token {
 	if ( $res->hash->{count} ) {
 		$db->update( 'users', { status => 1 }, { id => $uid } );
 		$db->delete( 'pending_registrations', { user_id => $uid } );
-		$tx->commit;
+		if ( not $opt{in_transaction} ) {
+			$tx->commit;
+		}
 		return 1;
 	}
 	return;
-- 
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