#!/usr/bin/perl -wT
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>
#                 Dan Mosedale <dmose@mozilla.org>
#                 Alan Raetz <al_raetz@yahoo.com>
#                 David Miller <justdave@syndicomm.com>
#                 Christopher Aillon <christopher@aillon.com>
#                 Gervase Markham <gerv@gerv.net>
#                 Vlad Dascalu <jocuri@softhome.net>
#                 Shane H. W. Travis <travis@sedsystems.ca>

use strict;

use lib qw(.);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Search;
use Bugzilla::Util;
use Bugzilla::Error;
use Bugzilla::User;

my $template = Bugzilla->template;
local our $vars = {};

###############################################################################
# Each panel has two functions - panel Foo has a DoFoo, to get the data 
# necessary for displaying the panel, and a SaveFoo, to save the panel's 
# contents from the form data (if appropriate.) 
# SaveFoo may be called before DoFoo.    
###############################################################################
sub DoAccount {
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;

    ($vars->{'realname'}) = $dbh->selectrow_array(
        "SELECT realname FROM profiles WHERE userid = ?", undef, $user->id);

    if(Bugzilla->params->{'allowemailchange'} 
       && Bugzilla->user->authorizer->can_change_email) {
        my @token = $dbh->selectrow_array(
            "SELECT tokentype, issuedate + " .
                    $dbh->sql_interval(3, 'DAY') . ", eventdata
               FROM tokens
              WHERE userid = ?
                AND tokentype LIKE 'email%'
           ORDER BY tokentype ASC " . $dbh->sql_limit(1), undef, $user->id);
        if (scalar(@token) > 0) {
            my ($tokentype, $change_date, $eventdata) = @token;
            $vars->{'login_change_date'} = $change_date;

            if($tokentype eq 'emailnew') {
                my ($oldemail,$newemail) = split(/:/,$eventdata);
                $vars->{'new_login_name'} = $newemail;
            }
        }
    }
}

sub SaveAccount {
    my $cgi = Bugzilla->cgi;
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;

    my $pwd1 = $cgi->param('new_password1');
    my $pwd2 = $cgi->param('new_password2');

    if ($cgi->param('Bugzilla_password') ne "" || 
        $pwd1 ne "" || $pwd2 ne "") 
    {
        my ($oldcryptedpwd) = $dbh->selectrow_array(
                        q{SELECT cryptpassword FROM profiles WHERE userid = ?},
                        undef, $user->id);
        $oldcryptedpwd || ThrowCodeError("unable_to_retrieve_password");

        if (crypt(scalar($cgi->param('Bugzilla_password')), $oldcryptedpwd) ne 
                  $oldcryptedpwd) 
        {
            ThrowUserError("old_password_incorrect");
        }

        if ($pwd1 ne "" || $pwd2 ne "")
        {
            $cgi->param('new_password1')
              || ThrowUserError("new_password_missing");
            validate_password($pwd1, $pwd2);

            if ($cgi->param('Bugzilla_password') ne $pwd1) {
                my $cryptedpassword = bz_crypt($pwd1);
                trick_taint($cryptedpassword); # Only used in a placeholder
                $dbh->do(q{UPDATE profiles
                              SET cryptpassword = ?
                            WHERE userid = ?},
                         undef, ($cryptedpassword, $user->id));

                # Invalidate all logins except for the current one
                Bugzilla->logout(LOGOUT_KEEP_CURRENT);
            }
        }
    }

    if(Bugzilla->params->{"allowemailchange"} && $cgi->param('new_login_name')) {
        my $old_login_name = $cgi->param('Bugzilla_login');
        my $new_login_name = trim($cgi->param('new_login_name'));

        if($old_login_name ne $new_login_name) {
            $cgi->param('Bugzilla_password') 
              || ThrowUserError("old_password_required");

            use Bugzilla::Token;
            # Block multiple email changes for the same user.
            if (Bugzilla::Token::HasEmailChangeToken($user->id)) {
                ThrowUserError("email_change_in_progress");
            }

            # Before changing an email address, confirm one does not exist.
            validate_email_syntax($new_login_name)
              || ThrowUserError('illegal_email_address', {addr => $new_login_name});
            trick_taint($new_login_name);
            is_available_username($new_login_name)
              || ThrowUserError("account_exists", {email => $new_login_name});

            Bugzilla::Token::IssueEmailChangeToken($user->id, $old_login_name,
                                                   $new_login_name);

            $vars->{'email_changes_saved'} = 1;
        }
    }

    my $realname = trim($cgi->param('realname'));
    trick_taint($realname); # Only used in a placeholder
    $dbh->do("UPDATE profiles SET realname = ? WHERE userid = ?",
             undef, ($realname, $user->id));
}


sub DoSettings {
    my $user = Bugzilla->user;

    my $settings = $user->settings;
    $vars->{'settings'} = $settings;

    my @setting_list = keys %$settings;
    $vars->{'setting_names'} = \@setting_list;

    $vars->{'has_settings_enabled'} = 0;
    # Is there at least one user setting enabled?
    foreach my $setting_name (@setting_list) {
        if ($settings->{"$setting_name"}->{'is_enabled'}) {
            $vars->{'has_settings_enabled'} = 1;
            last;
        }
    }
    $vars->{'dont_show_button'} = !$vars->{'has_settings_enabled'};
}

sub SaveSettings {
    my $cgi = Bugzilla->cgi;
    my $user = Bugzilla->user;

    my $settings = $user->settings;
    my @setting_list = keys %$settings;

    foreach my $name (@setting_list) {
        next if ! ($settings->{$name}->{'is_enabled'});
        my $value = $cgi->param($name);
        my $setting = new Bugzilla::User::Setting($name);

        if ($value eq "${name}-isdefault" ) {
            if (! $settings->{$name}->{'is_default'}) {
                $settings->{$name}->reset_to_default;
            }
        }
        else {
            $setting->validate_value($value);
            $settings->{$name}->set($value);
        }
    }
    $vars->{'settings'} = $user->settings(1);
}

sub DoEmail {
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;
    
    ###########################################################################
    # User watching
    ###########################################################################
    if (Bugzilla->params->{"supportwatchers"}) {
        my $watched_ref = $dbh->selectcol_arrayref(
            "SELECT profiles.login_name FROM watch INNER JOIN profiles" .
            " ON watch.watched = profiles.userid" .
            " WHERE watcher = ?",
            undef, $user->id);
        $vars->{'watchedusers'} = join(',', @$watched_ref);

        my $watcher_ids = $dbh->selectcol_arrayref(
            "SELECT watcher FROM watch WHERE watched = ?",
            undef, $user->id);

        my @watchers;
        foreach my $watcher_id (@$watcher_ids) {
            my $watcher = new Bugzilla::User($watcher_id);
            push (@watchers, Bugzilla::User::identity($watcher));
        }

        @watchers = sort { lc($a) cmp lc($b) } @watchers;
        $vars->{'watchers'} = \@watchers;
    }

    ###########################################################################
    # Role-based preferences
    ###########################################################################
    my $sth = $dbh->prepare("SELECT relationship, event " . 
                            "FROM email_setting " . 
                            "WHERE user_id = ?");
    $sth->execute($user->id);

    my %mail;
    while (my ($relationship, $event) = $sth->fetchrow_array()) {
        $mail{$relationship}{$event} = 1;
    }

    $vars->{'mail'} = \%mail;      
}

sub SaveEmail {
    my $dbh = Bugzilla->dbh;
    my $cgi = Bugzilla->cgi;
    my $user = Bugzilla->user;
    
    ###########################################################################
    # Role-based preferences
    ###########################################################################
    $dbh->bz_lock_tables("email_setting WRITE");

    # Delete all the user's current preferences
    $dbh->do("DELETE FROM email_setting WHERE user_id = ?", undef, $user->id);

    # Repopulate the table - first, with normal events in the 
    # relationship/event matrix.
    # Note: the database holds only "off" email preferences, as can be implied 
    # from the name of the table - profiles_nomail.
    foreach my $rel (RELATIONSHIPS) {
        # Positive events: a ticked box means "send me mail."
        foreach my $event (POS_EVENTS) {
            if (defined($cgi->param("email-$rel-$event"))
                && $cgi->param("email-$rel-$event") == 1)
            {
                $dbh->do("INSERT INTO email_setting " . 
                         "(user_id, relationship, event) " . 
                         "VALUES (?, ?, ?)",
                         undef, ($user->id, $rel, $event));
            }
        }
        
        # Negative events: a ticked box means "don't send me mail."
        foreach my $event (NEG_EVENTS) {
            if (!defined($cgi->param("neg-email-$rel-$event")) ||
                $cgi->param("neg-email-$rel-$event") != 1) 
            {
                $dbh->do("INSERT INTO email_setting " . 
                         "(user_id, relationship, event) " . 
                         "VALUES (?, ?, ?)",
                         undef, ($user->id, $rel, $event));
            }
        }
    }

    # Global positive events: a ticked box means "send me mail."
    foreach my $event (GLOBAL_EVENTS) {
        if (defined($cgi->param("email-" . REL_ANY . "-$event"))
            && $cgi->param("email-" . REL_ANY . "-$event") == 1)
        {
            $dbh->do("INSERT INTO email_setting " . 
                     "(user_id, relationship, event) " . 
                     "VALUES (?, ?, ?)",
                     undef, ($user->id, REL_ANY, $event));
        }
    }

    $dbh->bz_unlock_tables();

    ###########################################################################
    # User watching
    ###########################################################################
    if (Bugzilla->params->{"supportwatchers"} 
        && defined $cgi->param('watchedusers')) 
    {
        # Just in case.  Note that this much locking is actually overkill:
        # we don't really care if anyone reads the watch table.  So 
        # some small amount of contention could be gotten rid of by
        # using user-defined locks rather than table locking.
        $dbh->bz_lock_tables('watch WRITE', 'profiles READ');

        # what the db looks like now
        my $old_watch_ids =
            $dbh->selectcol_arrayref("SELECT watched FROM watch"
                                   . " WHERE watcher = ?", undef, $user->id);
 
       # The new information given to us by the user.
        my @new_watch_names = split(/[,\s]+/, $cgi->param('watchedusers'));
        my %new_watch_ids;
        foreach my $username (@new_watch_names) {
            my $watched_userid = login_to_id(trim($username), THROW_ERROR);
            $new_watch_ids{$watched_userid} = 1;
        }
        my ($removed, $added) = diff_arrays($old_watch_ids, [keys %new_watch_ids]);

        # Remove people who were removed.
        my $delete_sth = $dbh->prepare('DELETE FROM watch WHERE watched = ?'
                                     . ' AND watcher = ?');
        foreach my $remove_me (@$removed) {
            $delete_sth->execute($remove_me, $user->id);
        }

        # Add people who were added.
        my $insert_sth = $dbh->prepare('INSERT INTO watch (watched, watcher)'
                                     . ' VALUES (?, ?)');
        foreach my $add_me (@$added) {
            $insert_sth->execute($add_me, $user->id);
        }

        $dbh->bz_unlock_tables();
    }
}


sub DoPermissions {
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;
    my (@has_bits, @set_bits);
    
    my $groups = $dbh->selectall_arrayref(
               "SELECT DISTINCT name, description FROM groups WHERE id IN (" . 
               $user->groups_as_string . ") ORDER BY name");
    foreach my $group (@$groups) {
        my ($nam, $desc) = @$group;
        push(@has_bits, {"desc" => $desc, "name" => $nam});
    }
    $groups = $dbh->selectall_arrayref('SELECT DISTINCT id, name, description
                                          FROM groups
                                         ORDER BY name');
    foreach my $group (@$groups) {
        my ($group_id, $nam, $desc) = @$group;
        if ($user->can_bless($group_id)) {
            push(@set_bits, {"desc" => $desc, "name" => $nam});
        }
    }
    
    $vars->{'has_bits'} = \@has_bits;
    $vars->{'set_bits'} = \@set_bits;    
}

# No SavePermissions() because this panel has no changeable fields.


sub DoSavedSearches {
    # 2004-12-13 - colin.ogilvie@gmail.com, bug 274397
    # Need to work around the possibly missing query_format=advanced
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;

    my @queries = @{$user->queries};
    my @newqueries;
    foreach my $q (@queries) {
        if ($q->{'query'} =~ /query_format=([^&]*)/) {
            my $format = $1;
            if (!IsValidQueryType($format)) {
                if ($format eq "") {
                    $q->{'query'} =~ s/query_format=/query_format=advanced/;
                }
                else {
                    $q->{'query'} .= '&query_format=advanced';
                }
            }
        } else {
            $q->{'query'} .= '&query_format=advanced';
        }
        push @newqueries, $q;
    }
    $vars->{'queries'} = \@newqueries;
    if ($user->queryshare_groups_as_string) {
        $vars->{'queryshare_groups'} = $dbh->selectall_arrayref(
            'SELECT id, name FROM groups WHERE id IN ' .
            '(' . $user->queryshare_groups_as_string .')',
            {'Slice' => {}});
    }
}

sub SaveSavedSearches {
    my $cgi = Bugzilla->cgi;
    my $dbh = Bugzilla->dbh;
    my $user = Bugzilla->user;

    # We'll need this in a loop, so do the call once.
    my $user_id = $user->id;

    my @queries = @{$user->queries};
    my $sth_check_nl = $dbh->prepare('SELECT COUNT(*)
                                        FROM namedqueries_link_in_footer
                                       WHERE namedquery_id = ?
                                         AND user_id = ?');
    my $sth_insert_nl = $dbh->prepare('INSERT INTO namedqueries_link_in_footer
                                       (namedquery_id, user_id)
                                       VALUES (?, ?)');
    my $sth_delete_nl = $dbh->prepare('DELETE FROM namedqueries_link_in_footer
                                             WHERE namedquery_id = ?
                                               AND user_id = ?');
    my $sth_check_ngm = $dbh->prepare('SELECT COUNT(*)
                                         FROM namedquery_group_map
                                        WHERE namedquery_id = ?');
    my $sth_insert_ngm = $dbh->prepare('INSERT INTO namedquery_group_map
                                        (namedquery_id, group_id)
                                        VALUES (?, ?)');
    my $sth_update_ngm = $dbh->prepare('UPDATE namedquery_group_map
                                           SET group_id = ?
                                         WHERE namedquery_id = ?');
    my $sth_delete_ngm = $dbh->prepare('DELETE FROM namedquery_group_map
                                              WHERE namedquery_id = ?');
    my $sth_direct_group_members =
        $dbh->prepare('SELECT user_id
                         FROM user_group_map
                        WHERE group_id = ?
                          AND isbless = ' . GROUP_MEMBERSHIP . '
                          AND grant_type = ' . GRANT_DIRECT);
    foreach my $q (@queries) {
        # Update namedqueries_link_in_footer.
        $sth_check_nl->execute($q->{'id'}, $user_id);
        my ($link_in_footer_entries) = $sth_check_nl->fetchrow_array();
        if (defined($cgi->param("link_in_footer_$q->{'id'}"))) {
            if ($link_in_footer_entries == 0) {
                $sth_insert_nl->execute($q->{'id'}, $user_id);
            }
        }
        else {
            if ($link_in_footer_entries > 0) {
                $sth_delete_nl->execute($q->{'id'}, $user_id);
            }
        }

        # For user's own queries, update namedquery_group_map.
        if ($q->{'userid'} == $user_id) {
            my ($group_id, $group_map_entries);
            if ($user->in_group(Bugzilla->params->{'querysharegroup'})) {
                $sth_check_ngm->execute($q->{'id'});
                ($group_map_entries) = $sth_check_ngm->fetchrow_array();
                $group_id = $cgi->param("share_$q->{'id'}") || '';
            }
            if ($group_id) {
                if (grep(/^\Q$group_id\E$/, @{$user->queryshare_groups()})) {
                    # $group_id is now definitely a valid ID of a group the
                    # user can see, so we can trick_taint.
                    trick_taint($group_id);
                    if ($group_map_entries == 0) {
                        $sth_insert_ngm->execute($q->{'id'}, $group_id);
                    }
                    else {
                        $sth_update_ngm->execute($group_id, $q->{'id'});
                    }

                    # If we're sharing our query with a group we can bless,
                    # we're subscribing direct group members to our search
                    # automatically. Otherwise, the group members need to
                    # opt in. This behaviour is deemed most likely to fit
                    # users' needs.
                    if ($user->can_bless($group_id)) {
                        $sth_direct_group_members->execute($group_id);
                        my $user_id;
                        while ($user_id =
                               $sth_direct_group_members->fetchrow_array()) {
                            next if $user_id == $user->id;

                            $sth_check_nl->execute($q->{'id'}, $user_id);
                            my ($already_shown_in_footer) =
                                $sth_check_nl->fetchrow_array();
                            if (! $already_shown_in_footer) {
                                $sth_insert_nl->execute($q->{'id'}, $user_id);
                            }
                        }
                    }
                }
                else {
                    # In the unlikely case somebody removed visibility to the
                    # group in the meantime, don't modify sharing.
                }
            }
            else {
                if ($group_map_entries > 0) {
                    $sth_delete_ngm->execute($q->{'id'});
                }

                # Don't remove namedqueries_link_in_footer entries for users
                # subscribing to the shared query. The idea is that they will
                # probably want to be subscribers again should the sharing
                # user choose to share the query again.
            }
        }
    }

    $user->flush_queries_cache;
    
    # Update profiles.mybugslink.
    my $showmybugslink = defined($cgi->param("showmybugslink")) ? 1 : 0;
    $dbh->do("UPDATE profiles SET mybugslink = ? WHERE userid = ?",
             undef, ($showmybugslink, $user->id));    
    $user->{'showmybugslink'} = $showmybugslink;
}


###############################################################################
# Live code (not subroutine definitions) starts here
###############################################################################

my $cgi = Bugzilla->cgi;

# This script needs direct access to the username and password CGI variables,
# so we save them before their removal in Bugzilla->login, and delete them 
# prior to login if we might possibly be in an sudo session.
my $bugzilla_login    = $cgi->param('Bugzilla_login');
my $bugzilla_password = $cgi->param('Bugzilla_password');
$cgi->delete('Bugzilla_login', 'Bugzilla_password') if ($cgi->cookie('sudo'));

Bugzilla->login(LOGIN_REQUIRED);
$cgi->param('Bugzilla_login', $bugzilla_login);
$cgi->param('Bugzilla_password', $bugzilla_password);

$vars->{'changes_saved'} = $cgi->param('dosave');

my $current_tab_name = $cgi->param('tab') || "account";

# The SWITCH below makes sure that this is valid
trick_taint($current_tab_name);

$vars->{'current_tab_name'} = $current_tab_name;

# Do any saving, and then display the current tab.
SWITCH: for ($current_tab_name) {
    /^account$/ && do {
        SaveAccount() if $cgi->param('dosave');
        DoAccount();
        last SWITCH;
    };
    /^settings$/ && do {
        SaveSettings() if $cgi->param('dosave');
        DoSettings();
        last SWITCH;
    };
    /^email$/ && do {
        SaveEmail() if $cgi->param('dosave');
        DoEmail();
        last SWITCH;
    };
    /^permissions$/ && do {
        DoPermissions();
        last SWITCH;
    };
    /^saved-searches$/ && do {
        SaveSavedSearches() if $cgi->param('dosave');
        DoSavedSearches();
        last SWITCH;
    };
    ThrowUserError("unknown_tab",
                   { current_tab_name => $current_tab_name });
}

# Generate and return the UI (HTML page) from the appropriate template.
print $cgi->header();
$template->process("account/prefs/prefs.html.tmpl", $vars)
  || ThrowTemplateError($template->error());