<?php

namespace Dashboard\Unifi\Console;

use App\Models\Setting;
use Dashboard\Unifi\Models\UnifiPpsk;
use Dashboard\Unifi\Services\UnifiApiClient;
use Illuminate\Console\Command;
use Illuminate\Support\Carbon;

class RotatePasswords extends Command
{
    protected $signature   = 'unifi:rotate-passwords {--force : Run regardless of schedule}';
    protected $description = 'Rotate WiFi passwords for SSIDs configured with a wordlist schedule';

    public function handle(UnifiApiClient $unifi): int
    {
        if (! Setting::get('unifi.password_rotation.enabled')) {
            return self::SUCCESS;
        }

        $wlanIdsJson = Setting::get('unifi.password_rotation.wlan_ids', '[]');
        $wlanIds     = json_decode($wlanIdsJson, true);

        if (empty($wlanIds) || ! is_array($wlanIds)) {
            return self::SUCCESS;
        }

        $wordlist = Setting::get('unifi.password_rotation.wordlist', '');
        $passwords = array_values(array_filter(array_map('trim', explode("\n", $wordlist))));

        if (empty($passwords)) {
            $this->warn('Password rotation: no passwords in wordlist — skipped.');
            return self::SUCCESS;
        }

        if (! $this->option('force') && ! $this->isDue()) {
            return self::SUCCESS;
        }

        $password = $passwords[array_rand($passwords)];
        $rotated  = 0;

        foreach ($wlanIds as $wlanId) {
            try {
                $unifi->updateWlan($wlanId, ['x_passphrase' => $password]);
                $rotated++;
            } catch (\Throwable $e) {
                $this->error("Failed to rotate wlan {$wlanId}: {$e->getMessage()}");
            }
        }

        if ($rotated > 0) {
            Setting::set('unifi.password_rotation.last_rotated_at', now()->toIso8601String());
            $this->info("Rotated password for {$rotated} SSID(s).");
        }

        // ── Rotate PPSK passwords ────────────────────────────────────────────
        $rotatedPpsks = 0;
        foreach (UnifiPpsk::where('rotate_password', true)->where('state', 'active')->whereNotNull('unifi_id')->get() as $ppsk) {
            // Each PPSK gets its own independently-chosen password from the wordlist
            $newPass = $passwords[array_rand($passwords)];
            try {
                $unifi->updatePpsk($ppsk->unifi_id, ['x_passphrase' => $newPass]);
                $ppsk->update(['x_passphrase' => $newPass]);
                $rotatedPpsks++;
            } catch (\Throwable $e) {
                $this->error("Failed to rotate PPSK \"{$ppsk->name}\": {$e->getMessage()}");
            }
        }
        if ($rotatedPpsks > 0) {
            $this->info("Rotated password for {$rotatedPpsks} PPSK(s).");
        }

        return self::SUCCESS;
    }

    private function isDue(): bool
    {
        $frequency = Setting::get('unifi.password_rotation.frequency', 'weekly');
        $hour      = (int) Setting::get('unifi.password_rotation.hour', 2);
        $minute    = (int) Setting::get('unifi.password_rotation.minute', 0);
        $dow       = (int) Setting::get('unifi.password_rotation.day_of_week', 0);
        $tz        = \App\Support\Timezone::current();
        $now       = now($tz);

        if ($now->hour !== $hour || $now->minute !== $minute) {
            return false;
        }

        if ($frequency === 'weekly' && $now->dayOfWeek !== $dow) {
            return false;
        }

        return true;
    }
}