#!/usr/local/cpanel/3rdparty/bin/perl
# gniza WHM Plugin — Main Config Editor
use strict;
use warnings;

use lib '/usr/local/cpanel/whostmgr/docroot/cgi/gniza-whm/lib';

use Whostmgr::HTMLInterface ();
use Cpanel::Form            ();
use GnizaWHM::Config;
use GnizaWHM::Validator;
use GnizaWHM::UI;

my $CONFIG_FILE = '/etc/gniza/gniza.conf';
my $form        = Cpanel::Form::parseform();
my $method      = $ENV{'REQUEST_METHOD'} // 'GET';

# ── Handle POST ──────────────────────────────────────────────

my @errors;
my $saved = 0;

if ($method eq 'POST') {
    unless (GnizaWHM::UI::verify_csrf_token($form->{'gniza_csrf'})) {
        push @errors, 'Invalid or expired form token. Please try again.';
    }

    if (!@errors) {
        my %data;
        for my $key (@GnizaWHM::Config::MAIN_KEYS) {
            $data{$key} = $form->{$key} // '';
        }

        my $validation_errors = GnizaWHM::Validator::validate_main_config(\%data);

        if (@$validation_errors) {
            @errors = @$validation_errors;
        } else {
            my ($ok, $err) = GnizaWHM::Config::write($CONFIG_FILE, \%data, \@GnizaWHM::Config::MAIN_KEYS);
            if ($ok) {
                GnizaWHM::UI::set_flash('success', 'Configuration saved successfully.');
                print "Status: 302 Found\r\n";
                print "Location: settings.cgi\r\n\r\n";
                exit;
            } else {
                push @errors, "Failed to save config: $err";
            }
        }
    }
}

# ── Render Page ──────────────────────────────────────────────

print "Content-Type: text/html\r\n\r\n";

Whostmgr::HTMLInterface::defheader('gniza Backup Manager — Settings', '', '/cgi/gniza-whm/settings.cgi');

print GnizaWHM::UI::page_header('Settings');
print GnizaWHM::UI::render_nav('settings.cgi');
print GnizaWHM::UI::render_flash();

if (@errors) {
    print GnizaWHM::UI::render_errors(\@errors);
}

# Load current config (or use POST data if validation failed)
my $conf;
if (@errors && $method eq 'POST') {
    $conf = {};
    for my $key (@GnizaWHM::Config::MAIN_KEYS) {
        $conf->{$key} = $form->{$key} // '';
    }
} else {
    $conf = GnizaWHM::Config::parse($CONFIG_FILE, 'main');
}

# Helper to output a text field row
sub field_text {
    my ($key, $label, $hint, $extra) = @_;
    $extra //= '';
    my $val = GnizaWHM::UI::esc($conf->{$key} // '');
    my $hint_html = $hint ? qq{ <span class="text-xs text-base-content/60 ml-2">$hint</span>} : '';
    print qq{<div class="flex items-center gap-3 mb-2.5">\n};
    print qq{  <label class="w-44 font-medium text-sm" for="$key">$label</label>\n};
    print qq{  <input type="text" class="input input-bordered input-sm w-full max-w-xs" id="$key" name="$key" value="$val" $extra>\n};
    print qq{  $hint_html\n} if $hint;
    print qq{</div>\n};
}

# Helper to output a select field row
sub field_select {
    my ($key, $label, $options_ref) = @_;
    my $current = $conf->{$key} // '';
    print qq{<div class="flex items-center gap-3 mb-2.5">\n};
    print qq{  <label class="w-44 font-medium text-sm" for="$key">$label</label>\n};
    print qq{  <select class="select select-bordered select-sm w-full max-w-xs" id="$key" name="$key">\n};
    for my $opt (@$options_ref) {
        my $sel = ($current eq $opt) ? ' selected' : '';
        my $esc_opt = GnizaWHM::UI::esc($opt);
        print qq{    <option value="$esc_opt"$sel>$esc_opt</option>\n};
    }
    print qq{  </select>\n};
    print qq{</div>\n};
}

# ── Form ─────────────────────────────────────────────────────

print qq{<form method="POST" action="settings.cgi">\n};
print GnizaWHM::UI::csrf_hidden_field();

# Section: Local Settings
print qq{<div class="card bg-base-100 shadow-sm border border-base-300 mb-6">\n<div class="card-body">\n};
print qq{<h2 class="card-title text-sm">Local Settings</h2>\n};
field_text('TEMP_DIR', 'Working Directory', 'Default: /usr/local/gniza/workdir');
print qq{</div>\n</div>\n};

# Section: Account Filtering
print qq{<div class="card bg-base-100 shadow-sm border border-base-300 mb-6">\n<div class="card-body">\n};
print qq{<h2 class="card-title text-sm">Account Filtering</h2>\n};
my $inc_val = GnizaWHM::UI::esc($conf->{INCLUDE_ACCOUNTS} // '');
my $exc_val = GnizaWHM::UI::esc($conf->{EXCLUDE_ACCOUNTS} // '');
print qq{<div class="flex items-center gap-3 mb-2.5">\n};
print qq{  <label class="w-44 font-medium text-sm" for="INCLUDE_ACCOUNTS">Include Accounts</label>\n};
print qq{  <textarea class="textarea textarea-bordered textarea-sm w-full max-w-xs" id="INCLUDE_ACCOUNTS" name="INCLUDE_ACCOUNTS" placeholder="Comma-separated, empty = all">$inc_val</textarea>\n};
print qq{</div>\n};
print qq{<div class="flex items-center gap-3 mb-2.5">\n};
print qq{  <label class="w-44 font-medium text-sm" for="EXCLUDE_ACCOUNTS">Exclude Accounts</label>\n};
print qq{  <textarea class="textarea textarea-bordered textarea-sm w-full max-w-xs" id="EXCLUDE_ACCOUNTS" name="EXCLUDE_ACCOUNTS" placeholder="Comma-separated">$exc_val</textarea>\n};
print qq{</div>\n};

my @accounts = GnizaWHM::UI::get_cpanel_accounts();
if (@accounts) {
    print qq{<div class="text-xs text-base-content/60 mt-2">};
    print qq{Available accounts: } . GnizaWHM::UI::esc(join(', ', @accounts));
    print qq{</div>\n};
}
print qq{</div>\n</div>\n};

# Section: Logging
print qq{<div class="card bg-base-100 shadow-sm border border-base-300 mb-6">\n<div class="card-body">\n};
print qq{<h2 class="card-title text-sm">Logging</h2>\n};
field_text('LOG_DIR', 'Log Directory', 'Default: /var/log/gniza');
field_select('LOG_LEVEL', 'Log Level', ['debug', 'info', 'warn', 'error']);
field_text('LOG_RETAIN', 'Log Retention (days)', 'Default: 90');
print qq{</div>\n</div>\n};

# Section: Notifications
print qq{<div class="card bg-base-100 shadow-sm border border-base-300 mb-6">\n<div class="card-body">\n};
print qq{<h2 class="card-title text-sm">Notifications</h2>\n};
field_text('NOTIFY_EMAIL', 'Email Address', 'Empty = disabled');
field_select('NOTIFY_ON', 'Notify On', ['always', 'failure', 'never']);
print qq{</div>\n</div>\n};

# Section: Advanced
print qq{<div class="card bg-base-100 shadow-sm border border-base-300 mb-6">\n<div class="card-body">\n};
print qq{<h2 class="card-title text-sm">Advanced</h2>\n};
field_text('LOCK_FILE', 'Lock File', 'Default: /var/run/gniza.lock');
field_text('SSH_TIMEOUT', 'SSH Timeout (seconds)', 'Default: 30');
field_text('SSH_RETRIES', 'SSH Retries', 'Default: 3');
field_text('RSYNC_EXTRA_OPTS', 'Extra rsync Options', 'Additional flags for rsync');
print qq{</div>\n</div>\n};

# Submit
print qq{<div class="flex gap-2 mt-4">\n};
print qq{  <button type="submit" class="btn btn-primary btn-sm">Save Settings</button>\n};
print qq{</div>\n};

print qq{</form>\n};

print GnizaWHM::UI::page_footer();
Whostmgr::HTMLInterface::footer();