# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

package Bugzilla::Install;

# Functions in this this package can assume that the database
# has been set up, params are available, localconfig is
# available, and any module can be used.
#
# If you want to write an installation function that can't
# make those assumptions, then it should go into one of the
# packages under the Bugzilla::Install namespace.

use 5.14.0;
use strict;
use warnings;

use Bugzilla::Component;
use Bugzilla::Config qw(:admin);
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::Group;
use Bugzilla::Product;
use Bugzilla::User;
use Bugzilla::User::Setting;
use Bugzilla::Util qw(get_text);
use Bugzilla::Version;

use constant STATUS_WORKFLOW => (
  [undef,         'UNCONFIRMED'],
  [undef,         'CONFIRMED'],
  [undef,         'IN_PROGRESS'],
  ['UNCONFIRMED', 'CONFIRMED'],
  ['UNCONFIRMED', 'IN_PROGRESS'],
  ['UNCONFIRMED', 'RESOLVED'],
  ['CONFIRMED',   'IN_PROGRESS'],
  ['CONFIRMED',   'RESOLVED'],
  ['IN_PROGRESS', 'CONFIRMED'],
  ['IN_PROGRESS', 'RESOLVED'],
  ['RESOLVED',    'UNCONFIRMED'],
  ['RESOLVED',    'CONFIRMED'],
  ['RESOLVED',    'VERIFIED'],
  ['VERIFIED',    'UNCONFIRMED'],
  ['VERIFIED',    'CONFIRMED'],
);

sub SETTINGS {
  return {
    # 2005-03-03 travis@sedsystems.ca -- Bug 41972
    display_quips => {options => ["on", "off"], default => "on"},

    # 2005-03-10 travis@sedsystems.ca -- Bug 199048
    comment_sort_order => {
      options =>
        ["oldest_to_newest", "newest_to_oldest", "newest_to_oldest_desc_first"],
      default => "oldest_to_newest"
    },

    # 2005-05-12 bugzilla@glob.com.au -- Bug 63536
    post_bug_submit_action =>
      {options => ["next_bug", "same_bug", "nothing"], default => "next_bug"},

    # 2005-06-29 wurblzap@gmail.com -- Bug 257767
    csv_colsepchar => {options => [',', ';'], default => ','},

    # 2005-10-26 wurblzap@gmail.com -- Bug 291459
    zoom_textareas => {options => ["on", "off"], default => "on"},

    # 2006-05-01 olav@bkor.dhs.org -- Bug 7710
    state_addselfcc => {
      options => ['always', 'never', 'cc_unless_role'],
      default => 'cc_unless_role'
    },

    # 2006-08-04 wurblzap@gmail.com -- Bug 322693
    skin => {subclass => 'Skin', default => 'Dusk'},

    # 2006-12-10 LpSolit@gmail.com -- Bug 297186
    lang => {subclass => 'Lang', default => ${Bugzilla->languages}[0]},

    # 2007-07-02 altlist@gmail.com -- Bug 225731
    quote_replies => {
      options => ['quoted_reply', 'simple_reply', 'off'],
      default => "quoted_reply"
    },

    # 2009-02-01 mozilla@matt.mchenryfamily.org -- Bug 398473
    comment_box_position => {
      options => ['before_comments', 'after_comments'],
      default => 'before_comments'
    },

    # 2008-08-27 LpSolit@gmail.com -- Bug 182238
    timezone => {subclass => 'Timezone', default => 'local'},

    # 2011-02-07 dkl@mozilla.com -- Bug 580490
    quicksearch_fulltext => {options => ['on', 'off'], default => 'on'},

    # 2011-06-21 glob@mozilla.com -- Bug 589128
    email_format => {options => ['html', 'text_only'], default => 'html'},

    # 2011-10-11 glob@mozilla.com -- Bug 301656
    requestee_cc => {options => ['on', 'off'], default => 'on'},

    # 2012-04-30 glob@mozilla.com -- Bug 663747
    bugmail_new_prefix => {options => ['on', 'off'], default => 'on'},

    # 2013-07-26 joshi_sunil@in.com -- Bug 669535
    possible_duplicates => {options => ['on', 'off'], default => 'on'},
  };
}

use constant SYSTEM_GROUPS => (
  {name => 'admin',        description => 'Administrators'},
  {name => 'tweakparams',  description => 'Can change Parameters'},
  {name => 'editusers',    description => 'Can edit or disable users'},
  {name => 'creategroups', description => 'Can create and destroy groups'},
  {
    name        => 'editclassifications',
    description => 'Can create, destroy, and edit classifications'
  },
  {
    name        => 'editcomponents',
    description => 'Can create, destroy, and edit components'
  },
  {
    name        => 'editkeywords',
    description => 'Can create, destroy, and edit keywords'
  },
  {
    name        => 'editbugs',
    description => 'Can edit all bug fields',
    userregexp  => '.*'
  },
  {
    name        => 'canconfirm',
    description => 'Can confirm a bug or mark it a duplicate'
  },
  {
    name        => 'bz_canusewhineatothers',
    description => 'Can configure whine reports for other users',
  },
  {
    name        => 'bz_canusewhines',
    description => 'User can configure whine reports for self',

    # inherited_by means that users in the groups listed below are
    # automatically members of bz_canusewhines.
    inherited_by => ['editbugs', 'bz_canusewhineatothers'],
  },
  {name => 'bz_sudoers', description => 'Can perform actions as other users',},
  {
    name         => 'bz_sudo_protect',
    description  => 'Can not be impersonated by other users',
    inherited_by => ['bz_sudoers'],
  },
  {name => 'bz_quip_moderators', description => 'Can moderate quips',},
);

use constant DEFAULT_CLASSIFICATION =>
  {name => 'Unclassified', description => 'Not assigned to any classification'};

use constant DEFAULT_PRODUCT => {
  name        => 'TestProduct',
  description => 'This is a test product.'
    . ' This ought to be blown away and replaced with real stuff in a'
    . ' finished installation of bugzilla.',
  version          => Bugzilla::Version::DEFAULT_VERSION,
  classification   => 'Unclassified',
  defaultmilestone => DEFAULT_MILESTONE,
};

use constant DEFAULT_COMPONENT => {
  name        => 'TestComponent',
  description => 'This is a test component in the test product database.'
    . ' This ought to be blown away and replaced with real stuff in'
    . ' a finished installation of Bugzilla.'
};

sub update_settings {
  my $dbh = Bugzilla->dbh;

  # If we're setting up settings for the first time, we want to be quieter.
  my $any_settings
    = $dbh->selectrow_array('SELECT 1 FROM setting ' . $dbh->sql_limit(1));
  if (!$any_settings) {
    say get_text('install_setting_setup');
  }

  my %settings = %{SETTINGS()};
  foreach my $setting (keys %settings) {
    add_setting(
      $setting,
      $settings{$setting}->{options},
      $settings{$setting}->{default},
      $settings{$setting}->{subclass},
      undef, !$any_settings
    );
  }

  # Delete the obsolete 'per_bug_queries' user preference. Bug 616191.
  $dbh->do('DELETE FROM setting WHERE name = ?', undef, 'per_bug_queries');
}

sub update_system_groups {
  my $dbh = Bugzilla->dbh;

  $dbh->bz_start_transaction();

  # If there is no editbugs group, this is the first time we're
  # adding groups.
  my $editbugs_exists = new Bugzilla::Group({name => 'editbugs'});
  if (!$editbugs_exists) {
    say get_text('install_groups_setup');
  }

  # Create most of the system groups
  foreach my $definition (SYSTEM_GROUPS) {
    my $exists = new Bugzilla::Group({name => $definition->{name}});
    if (!$exists) {
      $definition->{isbuggroup} = 0;
      $definition->{silently}   = !$editbugs_exists;
      my $inherited_by = delete $definition->{inherited_by};
      my $created      = Bugzilla::Group->create($definition);

      # Each group in inherited_by is automatically a member of this
      # group.
      if ($inherited_by) {
        foreach my $name (@$inherited_by) {
          my $member = Bugzilla::Group->check($name);
          $dbh->do(
            'INSERT INTO group_group_map (grantor_id, 
                                          member_id) VALUES (?,?)', undef, $created->id,
            $member->id
          );
        }
      }
    }
  }

  $dbh->bz_commit_transaction();
}

sub create_default_classification {
  my $dbh = Bugzilla->dbh;

  # Make the default Classification if it doesn't already exist.
  if (!$dbh->selectrow_array('SELECT 1 FROM classifications')) {
    print get_text('install_default_classification',
      {name => DEFAULT_CLASSIFICATION->{name}})
      . "\n";
    Bugzilla::Classification->create(DEFAULT_CLASSIFICATION);
  }
}

# This function should be called only after creating the admin user.
sub create_default_product {
  my $dbh = Bugzilla->dbh;

  # And same for the default product/component.
  if (!$dbh->selectrow_array('SELECT 1 FROM products')) {
    print get_text('install_default_product', {name => DEFAULT_PRODUCT->{name}})
      . "\n";

    my $product = Bugzilla::Product->create(DEFAULT_PRODUCT);

    # Get the user who will be the owner of the Component.
    # We pick the admin with the lowest id, which is probably the
    # admin checksetup.pl just created.
    my $admin_group = new Bugzilla::Group({name => 'admin'});
    my ($admin_id) = $dbh->selectrow_array(
      'SELECT user_id FROM user_group_map WHERE group_id = ?
           ORDER BY user_id ' . $dbh->sql_limit(1), undef, $admin_group->id
    );
    my $admin = Bugzilla::User->new($admin_id);

    Bugzilla::Component->create({
      %{DEFAULT_COMPONENT()}, product => $product, initialowner => $admin->login
    });
  }

}

sub init_workflow {
  my $dbh          = Bugzilla->dbh;
  my $has_workflow = $dbh->selectrow_array('SELECT 1 FROM status_workflow');
  return if $has_workflow;

  say get_text('install_workflow_init');

  my %status_ids = @{
    $dbh->selectcol_arrayref('SELECT value, id FROM bug_status',
      {Columns => [1, 2]})
  };

  foreach my $pair (STATUS_WORKFLOW) {
    my $old_id = $pair->[0] ? $status_ids{$pair->[0]} : undef;
    my $new_id = $status_ids{$pair->[1]};
    $dbh->do(
      'INSERT INTO status_workflow (old_status, new_status)
                       VALUES (?,?)', undef, $old_id, $new_id
    );
  }
}

sub create_admin {
  my ($params) = @_;
  my $dbh      = Bugzilla->dbh;
  my $template = Bugzilla->template;

  my $admin_group = new Bugzilla::Group({name => 'admin'});
  my $admin_inheritors
    = Bugzilla::Group->flatten_group_membership($admin_group->id);
  my $admin_group_ids = join(',', @$admin_inheritors);

  my ($admin_count) = $dbh->selectrow_array(
    "SELECT COUNT(*) FROM user_group_map 
          WHERE group_id IN ($admin_group_ids)"
  );

  return if $admin_count;

  my %answer    = %{Bugzilla->installation_answers};
  my $login     = $answer{'ADMIN_EMAIL'};
  my $password  = $answer{'ADMIN_PASSWORD'};
  my $full_name = $answer{'ADMIN_REALNAME'};

  if (!$login || !$password || !$full_name) {
    say "\n" . get_text('install_admin_setup') . "\n";
  }

  while (!$login) {
    print get_text('install_admin_get_email') . ' ';
    $login = <STDIN>;
    chomp $login;
    eval { Bugzilla::User->check_login_name($login); };
    if ($@) {
      say $@;
      undef $login;
    }
  }

  while (!defined $full_name) {
    print get_text('install_admin_get_name') . ' ';
    $full_name = <STDIN>;
    chomp($full_name);
  }

  if (!$password) {
    $password = _prompt_for_password(get_text('install_admin_get_password'));
  }

  my $admin
    = Bugzilla::User->create({
    login_name => $login, realname => $full_name, cryptpassword => $password
    });
  make_admin($admin);
}

sub make_admin {
  my ($user) = @_;
  my $dbh = Bugzilla->dbh;

  $user
    = ref($user) ? $user : new Bugzilla::User(login_to_id($user, THROW_ERROR));

  my $group_insert = $dbh->prepare(
    'INSERT INTO user_group_map (user_id, group_id, isbless, grant_type)
              VALUES (?, ?, ?, ?)'
  );

  # Admins get explicit membership and bless capability for the admin group
  my $admin_group = new Bugzilla::Group({name => 'admin'});

  # These are run in an eval so that we can ignore the error of somebody
  # already being granted these things.
  eval { $group_insert->execute($user->id, $admin_group->id, 0, GRANT_DIRECT); };
  eval { $group_insert->execute($user->id, $admin_group->id, 1, GRANT_DIRECT); };

  # Admins should also have editusers directly, even though they'll usually
  # inherit it. People could have changed their inheritance structure.
  my $editusers = new Bugzilla::Group({name => 'editusers'});
  eval { $group_insert->execute($user->id, $editusers->id, 0, GRANT_DIRECT); };

  # If there is no maintainer set, make this user the maintainer.
  if (!Bugzilla->params->{'maintainer'}) {
    SetParam('maintainer', $user->email);
    write_params();
  }

  # Make sure the new admin isn't disabled
  if ($user->disabledtext) {
    $user->set_disabledtext('');
    $user->update();
  }

  if (Bugzilla->usage_mode == USAGE_MODE_CMDLINE) {
    say "\n", get_text('install_admin_created', {user => $user});
  }
}

sub _prompt_for_password {
  my $prompt = shift;

  my $password;
  while (!$password) {

    # trap a few interrupts so we can fix the echo if we get aborted.
    local $SIG{HUP}  = \&_password_prompt_exit;
    local $SIG{INT}  = \&_password_prompt_exit;
    local $SIG{QUIT} = \&_password_prompt_exit;
    local $SIG{TERM} = \&_password_prompt_exit;

    system("stty", "-echo") unless ON_WINDOWS;    # disable input echoing

    print $prompt, ' ';
    $password = <STDIN>;
    chomp $password;
    print "\n", get_text('install_confirm_password'), ' ';
    my $pass2 = <STDIN>;
    chomp $pass2;
    eval { validate_password($password, $pass2); };
    if ($@) {
      say "\n$@";
      undef $password;
    }
    system("stty", "echo") unless ON_WINDOWS;
  }
  return $password;
}

# This is just in case we get interrupted while getting a password.
sub _password_prompt_exit {

  # re-enable input echoing
  system("stty", "echo") unless ON_WINDOWS;
  exit 1;
}

sub reset_password {
  my $login    = shift;
  my $user     = Bugzilla::User->check($login);
  my $prompt   = "\n" . get_text('install_reset_password', {user => $user});
  my $password = _prompt_for_password($prompt);
  $user->set_password($password);
  $user->update();
  say "\n", get_text('install_reset_password_done');
}

1;

__END__

=head1 NAME

Bugzilla::Install - Functions and variables having to do with
  installation.

=head1 SYNOPSIS

 use Bugzilla::Install;
 Bugzilla::Install::update_settings();

=head1 DESCRIPTION

This module is used primarily by L<checksetup.pl> during installation.
This module contains functions that deal with general installation
issues after the database is completely set up and configured.

=head1 CONSTANTS

=over

=item C<SETTINGS>

Contains information about Settings, used by L</update_settings()>.

=back

=head1 SUBROUTINES

=over

=item C<update_settings()>

Description: Adds and updates Settings for users.

Params:      none

Returns:     nothing.

=item C<create_default_classification>

Creates the default "Unclassified" L<Classification|Bugzilla::Classification>
if it doesn't already exist

=item C<create_default_product()>

Description: Creates the default product and component if
             they don't exist.

Params:      none

Returns:     nothing

=back

=head1 B<Methods in need of POD>

=over

=item update_system_groups

=item reset_password

=item make_admin

=item create_admin

=item init_workflow

=back
