<?php

namespace App\Data\Pagarme\Request\PagarmeOrderRequestData;

use App\Data\Pagarme\PagarmeData;
use App\Models\PaymentSplit;
use Illuminate\Support\Collection;

/**
 * @param  array<int, array{code?: string, amount?: int, quantity?: int, description?: string, ...}>  $items  Lista de itens do pedido
 * @param  array<int, array{payment_method: string, ...}>  $payments  Lista de formas de pagamento
 * @param  array<string, mixed>  $metadata  Metadados do pedido (ex: payment_id, schedule_id, client_id, provider_id)
 * @param  array<string, mixed>|null  $customer  Dados do cliente (name, email, document, type, etc.)
 */
final readonly class PagarmeOrderRequestData extends PagarmeData
{
    public function __construct(
        public string $code,
        public array $items,
        public array $payments,
        public array $metadata,
        public ?array $customer = null,
        public ?string $customerId = null,
        public bool $closed = true,
        public ?string $channel = null,
    ) {
        self::requireFilled($this->code, 'code');

        if (empty($this->items)) {
            throw new \InvalidArgumentException('items nao pode estar vazio.');
        }

        if (empty($this->payments)) {
            throw new \InvalidArgumentException('payments nao pode estar vazio.');
        }

        foreach ($this->payments as $index => $payment) {
            if (! is_array($payment) || empty($payment['payment_method'])) {
                throw new \InvalidArgumentException("payments.{$index}.payment_method e obrigatorio.");
            }

            self::requireIn($payment['payment_method'], ['credit_card', 'pix'], "payments.{$index}.payment_method");
        }

        if (! $this->customerId && empty($this->customer)) {
            throw new \InvalidArgumentException('customer ou customer_id e obrigatorio.');
        }
    }

    public static function fromOrderPayload(
        string $code,
        array $items,
        array $customer,
        array $paymentMethod,
        array $metadata,
        mixed $customerId = null,
        bool $closed = true,
        ?string $channel = null,
    ): self {
        if (empty($items)) {
            throw new \InvalidArgumentException('items nao pode estar vazio.');
        }

        if (empty($paymentMethod['payment_method'])) {
            throw new \InvalidArgumentException('payment_method e obrigatorio.');
        }

        if (! in_array($paymentMethod['payment_method'], ['credit_card', 'pix'], true)) {
            throw new \InvalidArgumentException('payment_method deve ser credit_card ou pix.');
        }

        $customerIdPayload = self::filled($customerId) ? (string) $customerId : null;

        $customerPayload = self::filterFilledRecursiveStatic($customer);

        if (! $customerIdPayload && empty($customerPayload)) {
            throw new \InvalidArgumentException('customer ou customer_id e obrigatorio.');
        }

        return new self(
            code: $code,
            items: self::validateItems($items),
            payments: [self::filterFilledRecursiveStatic($paymentMethod)],
            metadata: $metadata,
            customer: ! empty($customerPayload) ? $customerPayload : null,
            customerId: $customerIdPayload,
            closed: $closed,
            channel: $channel,
        );
    }

    //

    public static function amountInCents(float $amount): int
    {
        return (int) round($amount * 100);
    }

    public static function creditCardPaymentMethod(array $creditCard, ?array $split = null): array
    {
        return self::paymentMethodWithOptionalSplit([
            'payment_method' => 'credit_card',
            'credit_card'    => self::buildCreditCardPayload($creditCard),
        ], $split);
    }

    public static function pixPaymentMethod(array $pix, ?array $split = null): array
    {
        return self::paymentMethodWithOptionalSplit([
            'payment_method' => 'pix',
            'pix'            => self::buildPixPayload($pix),
        ], $split);
    }

    public static function splitFromTransfers(Collection $transfers): array
    {
        return $transfers
            ->filter(fn (PaymentSplit $split) => ! empty($split->gateway_transfer_target_reference))
            ->map(function (PaymentSplit $split) {
                return [
                    'amount'       => self::amountInCents((float) $split->gross_amount),
                    'recipient_id' => $split->gateway_transfer_target_reference,
                    'type'         => 'flat',

                    'options' => [
                        'charge_processing_fee' => false,
                        'charge_remainder_fee'  => false,
                        'liable'                => false,
                    ],
                ];
            })
            ->values()
            ->all();
    }

    //

    public function toArray(): array
    {
        return $this->filterFilledRecursive([
            'code'        => $this->code,
            'items'       => $this->items,
            'payments'    => $this->payments,
            'closed'      => $this->closed,
            'metadata'    => $this->metadata,
            'customer_id' => $this->customerId,
            'customer'    => $this->customer,
            'channel'     => $this->channel,
        ]);
    }

    //

    private static function buildCreditCardPayload(array $creditCard): array
    {
        $payload = [];

        foreach ([
            'installments',
            'statement_descriptor',
            'operation_type',
            'recurrence_cycle',
            'metadata',
            'extended_limit_enabled',
            'extended_limit_code',
            'merchant_category_code',
            'authentication',
            'auto_recovery',
            'payload',
            'payment_type',
            'funding_source',
            'initiated_type',
            'recurrence_model',
            'channel',
            'payment_origin',
        ] as $field) {
            if (array_key_exists($field, $creditCard) && self::filled($creditCard[$field])) {
                $payload[$field] = $creditCard[$field];
            }
        }

        $allowedCardOptions = ['card', 'card_id', 'card_token', 'network_token'];

        $provided = array_values(array_filter(
            $allowedCardOptions,
            static fn (string $field) => ! empty($creditCard[$field])
        ));

        if (count($provided) !== 1) {
            throw new \InvalidArgumentException('Informe exatamente uma opcao entre card, card_id, card_token ou network_token.');
        }

        $selected = $provided[0];

        $payload[$selected] = $creditCard[$selected];

        return $payload;
    }

    private static function buildPixPayload(array $pix): array
    {
        if (! self::filled($pix['expires_in'] ?? null) && ! self::filled($pix['expires_at'] ?? null)) {
            throw new \InvalidArgumentException('pix.expires_in ou pix.expires_at e obrigatorio.');
        }

        $payload = [];

        foreach (['expires_in', 'expires_at', 'additional_information'] as $field) {
            if (array_key_exists($field, $pix) && self::filled($pix[$field])) {
                $payload[$field] = $pix[$field];
            }
        }

        return $payload;
    }

    //

    private static function filled(mixed $value): bool
    {
        return $value !== null && $value !== '' && $value !== [];
    }

    private static function filterFilledRecursiveStatic(array $data): array
    {
        $filtered = [];

        foreach ($data as $key => $value) {
            if (is_array($value)) {
                $value = self::filterFilledRecursiveStatic($value);
            }

            if (self::filled($value)) {
                $filtered[$key] = $value;
            }
        }

        return $filtered;
    }

    private static function paymentMethodWithOptionalSplit(array $paymentMethod, ?array $split): array
    {
        if (! empty($split)) {
            $paymentMethod['split'] = $split;
        }

        return $paymentMethod;
    }

    private static function validateItems(array $items): array
    {
        return collect($items)
            ->map(function (array $item, int $index) {
                foreach (['code', 'amount', 'quantity'] as $field) {
                    if (! array_key_exists($field, $item) || ! self::filled($item[$field])) {
                        throw new \InvalidArgumentException("items.{$index}.{$field} e obrigatorio.");
                    }
                }

                if ((int) $item['amount'] <= 0 || (int) $item['quantity'] <= 0) {
                    throw new \InvalidArgumentException("items.{$index}.amount e quantity devem ser maiores que zero.");
                }

                return self::filterFilledRecursiveStatic($item);
            })
            ->values()
            ->all();
    }
}