<?php

namespace App\Services;

use App\Http\Controllers\Controller;
use App\Models\Product;
use Rooyesh\Wallet\models\Wallet;

class TransactionMetalService
{
    private const METAL_LABELS = [
        1 => 'طلا',
        2 => 'نقره',
        3 => 'مس',
    ];

    public function __construct(
        private readonly ConfigService $configService
    ) {
    }

    public function metalLabel(int $metalId): string
    {
        return self::METAL_LABELS[$metalId] ?? Controller::metalTypeLabel();
    }

    /** @return array<int, array{metal_id: int, label: string, display_unit: string}> */
    public function catalogMetals(): array
    {
        return Product::query()
            ->where('active', 1)
            ->pluck('metal_id')
            ->filter(fn ($id) => (int) $id > 0)
            ->map(fn ($id) => (int) $id)
            ->unique()
            ->sort()
            ->values()
            ->map(fn (int $metalId) => [
                'metal_id' => $metalId,
                'label' => $this->metalLabel($metalId),
                'display_unit' => Controller::tradeWeightUnit(),
            ])
            ->all();
    }

    public function resolveMetalIdForTransaction(object $transaction): int
    {
        $productId = (int) ($transaction->product_id ?? 0);
        if ($productId > 0) {
            $metalId = (int) (Product::query()->whereKey($productId)->value('metal_id') ?? 0);
            if ($metalId > 0) {
                return $metalId;
            }
        }

        $wallet = $transaction->wallet ?? null;
        if (is_numeric($wallet)) {
            $wallet = Wallet::with('product:id,metal_id')->find($wallet);
        } elseif (is_object($wallet) && !$wallet->relationLoaded('product')) {
            $wallet->load('product:id,metal_id');
        }

        if (is_object($wallet) && $wallet->product_id && $wallet->product) {
            $metalId = (int) ($wallet->product->metal_id ?? 0);
            if ($metalId > 0) {
                return $metalId;
            }
        }

        if ($this->isMainWalletMetalTransaction($transaction, $wallet)) {
            return $this->configService->mainWalletMetalId();
        }

        return 1;
    }

    private function isMainWalletMetalTransaction(object $transaction, mixed $wallet): bool
    {
        $type = (int) ($transaction->type ?? 0);
        if (!in_array($type, [1, 2, 7, 10], true)) {
            return false;
        }

        if (!$wallet || !is_object($wallet)) {
            return true;
        }

        return $wallet->product_id === null && $wallet->fund_id === null;
    }

    public function resolveDisplayTypeStr(object $transaction): ?string
    {
        $type = (int) ($transaction->type ?? 0);
        if (!in_array($type, [1, 2, 7, 10], true)) {
            return null;
        }

        $metalLabel = $this->metalLabel($this->resolveMetalIdForTransaction($transaction));

        return match ($type) {
            1 => Controller::productBuyTitle($metalLabel),
            2 => Controller::productSellTitle($metalLabel),
            7 => 'واریز ' . $metalLabel,
            10 => 'برداشت ' . $metalLabel,
            default => null,
        };
    }

    /** @param iterable<int, array<string, mixed>|object> $rows */
    public function enrichTransactionRows(iterable $rows): array
    {
        $metalIds = array_column($this->catalogMetals(), 'metal_id');
        $enriched = [];

        foreach ($rows as $row) {
            $record = is_array($row) ? (object) $row : $row;
            $metalId = $this->resolveMetalIdForTransaction($record);
            $displayType = $this->resolveDisplayTypeStr($record);
            $type = (int) (is_array($row) ? ($row['type'] ?? 0) : ($row->type ?? 0));
            $gold = (float) (is_array($row) ? ($row['gold'] ?? 0) : ($row->gold ?? 0));
            $isMoney = in_array($type, [3, 4], true);

            if ($displayType !== null) {
                if (is_array($row)) {
                    $row['type_str'] = $displayType;
                } else {
                    $row->type_str = $displayType;
                }
            }

            foreach ($metalIds as $mid) {
                $key = "metal_gold_{$mid}";
                $value = (!$isMoney && $metalId === $mid) ? $gold : 0;
                if (is_array($row)) {
                    $row[$key] = $value;
                } else {
                    $row->{$key} = $value;
                }
            }

            if (is_array($row)) {
                $row['transaction_metal_id'] = $metalId;
                $row['transaction_metal_label'] = $this->metalLabel($metalId);
            } else {
                $row->transaction_metal_id = $metalId;
                $row->transaction_metal_label = $this->metalLabel($metalId);
            }

            $enriched[] = $row;
        }

        return $enriched;
    }
}