<?php

namespace App\Console\Commands;

use App\Models\WalletAddress;
use App\Services\Tokenview\TokenviewMonitorService;
use App\Support\SafeLog;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Cache;

class SyncTokenviewMonitorsCommand extends Command
{
    /** Cache key for the last run summary. */
    public const LAST_RUN_KEY = 'coruna.sync-monitors.last_run';

    protected $signature = 'coruna:sync-monitors
        {--limit=200 : Max addresses to process per run}
        {--status : Show the last run summary instead of running}';

    protected $description = 'Register monitor=1 & monitor_synced=0 addresses with Tokenview (retry addresses whose initial sync failed)';

    public function handle(TokenviewMonitorService $svc): int
    {
        if ($this->option('status')) {
            return $this->printStatus();
        }

        $log = SafeLog::channel('tokenview');
        $startedAt = microtime(true);
        $startedAtStr = now()->toDateTimeString();

        if (! $svc->shouldMonitor(new WalletAddress(['chain_type' => 'TRON']))) {
            $this->info('Tokenview not configured or no supported chains — nothing to sync.');
            $log->warning('sync-monitors run skipped: tokenview not configured or no supported chains');

            return self::SUCCESS;
        }

        $limit = (int) $this->option('limit');
        $maxFailures = TokenviewMonitorService::MAX_SYNC_FAILURES;
        // Only process addresses that are switched on (monitor=1), not yet
        // actually registered with Tokenview (monitor_synced=0), and have not
        // exhausted the retry budget (monitor_failures < MAX).
        $addresses = WalletAddress::query()
            ->where('monitor', 1)
            ->where('monitor_synced', false)
            ->where('monitor_failures', '<', $maxFailures)
            ->orderByDesc('updated_at')
            ->limit($limit)
            ->get();

        $pending = $addresses->count();
        $log->info('sync-monitors run start', [
            'started_at' => $startedAtStr,
            'pending' => $pending,
            'limit' => $limit,
        ]);
        $this->info("sync-monitors starting: {$pending} unsynced address(es).");

        if ($pending === 0) {
            $this->info('no unsynced monitor=1 addresses.');
            $this->storeLastRun($startedAt, $startedAtStr, 0, 0, 0, 0);
            $log->info('sync-monitors run done: nothing to sync');

            return self::SUCCESS;
        }

        $ok = 0;
        $fail = 0;
        $skipped = 0;
        $perAddress = [];
        foreach ($addresses as $addr) {
            if (! $svc->shouldMonitor($addr)) {
                $skipped++;
                $log->info('sync-monitors skip: unsupported chain or tokenview disabled', [
                    'id' => $addr->id,
                    'address' => $addr->address,
                    'chain_type' => $addr->chain_type,
                ]);
                continue;
            }
            try {
                $result = $svc->syncMonitor($addr);
                $failures = (int) $addr->fresh()->monitor_failures;
                if ($result) {
                    $ok++;
                    $log->info('sync-monitors ok', [
                        'id' => $addr->id,
                        'address' => $addr->address,
                        'chain_type' => $addr->chain_type,
                    ]);
                    $perAddress[] = ['address' => $addr->address, 'chain' => $addr->chain_type, 'ok' => true, 'failures' => $failures];
                } else {
                    $fail++;
                    $exhausted = $failures >= $maxFailures;
                    $log->warning('sync-monitors fail: tokenview addAddress returned false', [
                        'id' => $addr->id,
                        'address' => $addr->address,
                        'chain_type' => $addr->chain_type,
                        'failures' => $failures,
                        'exhausted' => $exhausted,
                    ]);
                    $reason = $exhausted
                        ? "api returned false (failures={$failures}, giving up)"
                        : "api returned false (failures={$failures})";
                    $perAddress[] = ['address' => $addr->address, 'chain' => $addr->chain_type, 'ok' => false, 'reason' => $reason, 'failures' => $failures];
                }
            } catch (\Throwable $e) {
                $fail++;
                $failures = (int) $addr->fresh()->monitor_failures;
                $this->warn("  failed: {$addr->address} ({$addr->chain_type}): {$e->getMessage()}");
                $log->warning('sync-monitors fail: exception', [
                    'id' => $addr->id,
                    'address' => $addr->address,
                    'chain_type' => $addr->chain_type,
                    'error' => $e->getMessage(),
                    'failures' => $failures,
                ]);
                $perAddress[] = ['address' => $addr->address, 'chain' => $addr->chain_type, 'ok' => false, 'reason' => $e->getMessage(), 'failures' => $failures];
            }
        }

        $elapsed = round(microtime(true) - $startedAt, 3);
        $this->info("synced: ok={$ok} fail={$fail} skipped={$skipped} total=".count($addresses)." in {$elapsed}s");

        $log->info('sync-monitors run done', [
            'started_at' => $startedAtStr,
            'ok' => $ok,
            'fail' => $fail,
            'skipped' => $skipped,
            'total' => count($addresses),
            'elapsed_sec' => $elapsed,
        ]);

        $this->storeLastRun($startedAt, $startedAtStr, $ok, $fail, $skipped, count($addresses), $perAddress);

        return self::SUCCESS;
    }

    private function storeLastRun(
        float $startedAt,
        string $startedAtStr,
        int $ok,
        int $fail,
        int $skipped,
        int $total,
        array $perAddress = [],
    ): void {
        Cache::put(self::LAST_RUN_KEY, [
            'started_at' => $startedAtStr,
            'finished_at' => now()->toDateTimeString(),
            'elapsed_sec' => round(microtime(true) - $startedAt, 3),
            'ok' => $ok,
            'fail' => $fail,
            'skipped' => $skipped,
            'total' => $total,
            'per_address' => $perAddress,
        ], now()->addDays(7));
    }

    private function printStatus(): int
    {
        $last = Cache::get(self::LAST_RUN_KEY);
        if (! $last) {
            $this->info('no recorded run yet — sync-monitors has not executed since the cache was cleared.');

            return self::SUCCESS;
        }

        $this->info('=== coruna:sync-monitors last run ===');
        $this->line('started : '.$last['started_at']);
        $this->line('finished: '.$last['finished_at']);
        $this->line('elapsed : '.$last['elapsed_sec'].'s');
        $this->line(sprintf('ok=%d  fail=%d  skipped=%d  total=%d',
            $last['ok'], $last['fail'], $last['skipped'], $last['total']));

        $maxFailures = TokenviewMonitorService::MAX_SYNC_FAILURES;
        $pending = WalletAddress::query()
            ->where('monitor', 1)
            ->where('monitor_synced', false)
            ->where('monitor_failures', '<', $maxFailures)
            ->count();
        $this->line("currently retryable (monitor=1 & monitor_synced=0 & failures<{$maxFailures}): {$pending}");

        $exhausted = WalletAddress::query()
            ->where('monitor', 1)
            ->where('monitor_synced', false)
            ->where('monitor_failures', '>=', $maxFailures)
            ->count();
        $this->line("gave up (failures>={$maxFailures}): {$exhausted}");

        if (! empty($last['per_address'])) {
            $this->line('');
            $this->line('per-address results:');
            foreach ($last['per_address'] as $r) {
                $tag = $r['ok'] ? 'OK ' : 'FAIL';
                $reason = $r['ok'] ? '' : ' — '.($r['reason'] ?? '');
                $failures = isset($r['failures']) ? " [failures={$r['failures']}]" : '';
                $this->line(sprintf('  [%s] %s (%s)%s%s', $tag, $r['address'], $r['chain'], $reason, $failures));
            }
        }

        $logPath = storage_path('logs/tokenview/tokenview-'.now()->format('Y-m-d').'.log');
        $this->line('');
        $this->line('today\'s log: '.$logPath);

        return self::SUCCESS;
    }
}