<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Concerns\PortalAware;
use App\Http\Controllers\Controller;
use App\Models\TransferRecord;
use App\Models\WalletAddress;
use App\Support\AgentScope;
use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class TransferRecordController extends Controller
{
    use PortalAware;

    public function index()
    {
        return view('admin.transfers.index', [
            'portal' => $this->portal(),
            // value => label (DB stores lowercase chain / uppercase asset)
            'chains' => [
                'tron' => 'TRON',
                'eth' => 'ETH',
                'bsc' => 'BSC',
                'btc' => 'BTC',
            ],
            'assets' => ['USDT', 'TRX', 'ETH', 'BTC', 'BNB'],
        ]);
    }

    public function data(Request $request)
    {
        $q = $this->baseQuery($request);

        $sortable = ['id', 'chain', 'asset', 'amount', 'status', 'operator', 'created_at', 'updated_at'];
        $field = (string) $request->query('field', 'id');
        $order = strtolower((string) $request->query('order', 'desc')) === 'asc' ? 'asc' : 'desc';
        if (! in_array($field, $sortable, true)) {
            $field = 'id';
        }
        $q->orderBy('transfer_records.'.$field, $order);

        $limit = max(1, min(100, (int) $request->query('limit', 20)));
        $page = max(1, (int) $request->query('page', 1));
        $paginator = $q->paginate($limit, ['transfer_records.*'], 'page', $page);

        $data = collect($paginator->items())->map(function (TransferRecord $row) {
            return [
                'id' => $row->id,
                'from_address' => $row->from_address ?: '',
                'to_address' => $row->to_address ?: '',
                'chain' => $row->chain ?: '',
                'tx_hash' => $row->tx_hash ?: '',
                'amount' => $row->amount ?: '',
                'type' => $row->type ?: '',
                'asset' => $row->asset ?: '',
                'operator' => $row->operator ?: '',
                'status' => $row->status ?: '',
                'error' => $row->error ?: '',
                'created_at' => optional($row->created_at)->format('Y-m-d H:i:s'),
                'updated_at' => optional($row->updated_at)->format('Y-m-d H:i:s'),
            ];
        })->values();

        return response()->json([
            'code' => 0,
            'msg' => '',
            'count' => $paginator->total(),
            'data' => $data,
            'summary' => $this->successSummary($request),
        ]);
    }

    /**
     * Successful totals under the same top filters. Sweep vs fee-topup are split
     * by operator (`fee-topup…`); status is always success.
     *
     * @return array{totals: list<array{asset: string, amount: string}>, fee_totals: list<array{asset: string, amount: string}>}
     */
    private function successSummary(Request $request): array
    {
        $base = $this->baseQuery($request, ignoreStatus: true)
            ->where('transfer_records.status', TransferRecord::STATUS_SUCCESS);

        return [
            'totals' => $this->sumByAsset(
                (clone $base)->where(function (Builder $q) {
                    $q->whereNull('transfer_records.operator')
                        ->orWhere('transfer_records.operator', 'not like', 'fee-topup%');
                })
            ),
            'fee_totals' => $this->sumByAsset(
                (clone $base)->where('transfer_records.operator', 'like', 'fee-topup%')
            ),
        ];
    }

    /**
     * @return list<array{asset: string, amount: string}>
     */
    private function sumByAsset(Builder $q): array
    {
        $amountExpr = DB::connection()->getDriverName() === 'sqlite'
            ? 'CAST(transfer_records.amount AS REAL)'
            : 'CAST(transfer_records.amount AS DECIMAL(32, 18))';

        $rows = $q->selectRaw('UPPER(transfer_records.asset) as asset, COALESCE(SUM('.$amountExpr.'), 0) as total')
            ->groupByRaw('UPPER(transfer_records.asset)')
            ->get();

        $byAsset = [];
        foreach ($rows as $row) {
            $asset = strtoupper(trim((string) $row->asset));
            if ($asset === '') {
                continue;
            }
            $formatted = WalletAddress::formatAmount(strtolower($asset), $row->total);
            $byAsset[$asset] = $formatted === '' ? '0' : $formatted;
        }

        $order = ['USDT', 'ETH', 'TRX', 'BNB', 'BTC'];
        $totals = [];
        foreach ($order as $asset) {
            $totals[] = [
                'asset' => $asset,
                'amount' => $byAsset[$asset] ?? '0',
            ];
            unset($byAsset[$asset]);
        }
        ksort($byAsset);
        foreach ($byAsset as $asset => $amount) {
            $totals[] = ['asset' => $asset, 'amount' => $amount];
        }

        return $totals;
    }

    private function baseQuery(Request $request, bool $ignoreStatus = false): Builder
    {
        $q = TransferRecord::query();
        $agent = $this->agent();

        if ($agent !== null) {
            $channelIds = AgentScope::channelIdsFor($agent);
            if ($channelIds === []) {
                return $q->whereRaw('1 = 0');
            }

            $q->whereExists(function ($sub) use ($channelIds) {
                $sub->selectRaw('1')
                    ->from('wallet_addresses')
                    ->join('devices', 'devices.id', '=', 'wallet_addresses.device_id')
                    ->whereColumn('wallet_addresses.address', 'transfer_records.from_address')
                    ->whereIn('devices.channel_id', $channelIds);
            });
        }

        $from = trim((string) $request->query('from_address', ''));
        $to = trim((string) $request->query('to_address', ''));
        $txHash = trim((string) $request->query('tx_hash', ''));
        $chain = trim((string) $request->query('chain', ''));
        $asset = trim((string) $request->query('asset', ''));
        $status = $ignoreStatus ? '' : trim((string) $request->query('status', ''));
        $operator = trim((string) $request->query('operator', ''));
        [$dateFrom, $dateTo] = $this->dateRange($request);

        if ($from !== '') {
            $q->where('transfer_records.from_address', 'like', '%'.$from.'%');
        }
        if ($to !== '') {
            $q->where('transfer_records.to_address', 'like', '%'.$to.'%');
        }
        if ($txHash !== '') {
            $q->where('transfer_records.tx_hash', 'like', '%'.$txHash.'%');
        }
        if ($chain !== '') {
            $q->where('transfer_records.chain', $chain);
        }
        if ($asset !== '') {
            $q->where('transfer_records.asset', $asset);
        }
        if ($status !== '') {
            $q->where('transfer_records.status', $status);
        }
        if ($operator !== '') {
            $q->where('transfer_records.operator', 'like', '%'.$operator.'%');
        }
        if ($dateFrom !== null) {
            $q->where('transfer_records.created_at', '>=', $dateFrom);
        }
        if ($dateTo !== null) {
            $q->where('transfer_records.created_at', '<=', $dateTo);
        }

        return $q;
    }

    /**
     * @return array{0: ?Carbon, 1: ?Carbon}
     */
    private function dateRange(Request $request): array
    {
        $from = trim((string) $request->query('date_from', ''));
        $to = trim((string) $request->query('date_to', ''));
        $range = trim((string) $request->query('date_range', ''));
        if (($from === '' || $to === '') && $range !== '') {
            if (preg_match('/^(\d{4}-\d{2}-\d{2})\s*-\s*(\d{4}-\d{2}-\d{2})$/', $range, $m) === 1) {
                $from = $m[1];
                $to = $m[2];
            }
        }

        $start = null;
        $end = null;
        try {
            if ($from !== '') {
                $start = Carbon::parse($from)->startOfDay();
            }
            if ($to !== '') {
                $end = Carbon::parse($to)->endOfDay();
            }
        } catch (\Throwable) {
            return [null, null];
        }

        return [$start, $end];
    }
}