<?php

/**
 * Invoice Ninja (https://invoiceninja.com).
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2024. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\PaymentDrivers;

use Carbon\Carbon;
use Omnipay\Omnipay;
use App\Models\Invoice;
use App\Models\SystemLog;
use App\Models\GatewayType;
use App\Models\PaymentType;
use Illuminate\Support\Str;
use App\Jobs\Util\SystemLogger;
use App\Utils\Traits\MakesHash;
use App\Exceptions\PaymentFailed;
use Illuminate\Support\Facades\Http;

class PayPalRestPaymentDriver extends BaseDriver
{
    use MakesHash;

    public $token_billing = false;

    public $can_authorise_credit_card = false;

    private $omnipay_gateway;

    private float $fee = 0;

    public const SYSTEM_LOG_TYPE = SystemLog::TYPE_PAYPAL;

    private string $api_endpoint_url = '';

    private string $paypal_payment_method = '';

    private ?int $gateway_type_id = null;

    protected mixed $access_token = null;

    protected ?Carbon $token_expiry = null;

    private array $funding_options = [
        3 => 'paypal',
        1 => 'card',
        25 => 'venmo',
        29 => 'paypal_advanced_cards',
        // 9 => 'sepa',
        // 12 => 'bancontact',
        // 17 => 'eps',
        // 15 => 'giropay',
        // 13 => 'ideal',
        // 26 => 'mercadopago',
        // 27 => 'mybank',
        28 => 'paylater',
        // 16 => 'p24',
        // 7 => 'sofort'
    ];


    public function gatewayTypes()
    {

        $funding_options = [];

        foreach ($this->company_gateway->fees_and_limits as $key => $value) {
            if ($value->is_enabled) {
                $funding_options[] = $key;
            }
        }

        return $funding_options;

    }

    public function init()
    {

        $this->api_endpoint_url = $this->company_gateway->getConfigField('testMode') ? 'https://api-m.sandbox.paypal.com' : 'https://api-m.paypal.com';

        $secret = $this->company_gateway->getConfigField('secret');
        $client_id = $this->company_gateway->getConfigField('clientId');

        if($this->access_token && $this->token_expiry && $this->token_expiry->isFuture()) {
            return $this;
        }

        $response = Http::withBasicAuth($client_id, $secret)
                                    ->withHeaders(['Content-Type' => 'application/x-www-form-urlencoded'])
                                    ->withQueryParameters(['grant_type' => 'client_credentials'])
                                    ->post("{$this->api_endpoint_url}/v1/oauth2/token");

        if($response->successful()) {
            $this->access_token = $response->json()['access_token'];
            $this->token_expiry = now()->addSeconds($response->json()['expires_in'] - 60);
        } else {
            throw new PaymentFailed('Unable to gain access token from Paypal. Check your configuration', 401);
        }

        return $this;

    }

    private function getPaymentMethod($gateway_type_id): int
    {
        $method = PaymentType::PAYPAL;

        match($gateway_type_id) {
            "1" => $method = PaymentType::CREDIT_CARD_OTHER,
            "3" => $method = PaymentType::PAYPAL,
            "25" => $method = PaymentType::VENMO,
            "28" => $method = PaymentType::PAY_LATER,
            "29" => $method = PaymentType::CREDIT_CARD_OTHER,
        };

        return $method;
    }

    public function setPaymentMethod($payment_method_id): self
    {
        if(!$payment_method_id) {
            return $this;
        }

        $this->gateway_type_id = $payment_method_id;

        $this->paypal_payment_method = $this->funding_options[$payment_method_id];


        return $this;
    }

    public function authorizeView($payment_method)
    {
        // PayPal doesn't support direct authorization.

        return $this;
    }

    public function authorizeResponse($request)
    {
        // PayPal doesn't support direct authorization.

        return $this;
    }

    public function processPaymentView($data)
    {
        $this->init();

        $data['gateway'] = $this;

        $this->payment_hash->data = array_merge((array) $this->payment_hash->data, ['amount' => $data['total']['amount_with_fee']]);
        $this->payment_hash->save();

        $data['client_id'] = $this->company_gateway->getConfigField('clientId');
        $data['token'] = $this->getClientToken();
        $data['order_id'] = $this->createOrder($data);
        $data['funding_source'] = $this->paypal_payment_method;
        $data['gateway_type_id'] = $this->gateway_type_id;
        $data['currency'] = $this->client->currency()->code;


// return render('gateways.paypal.ppcp.card', $data);

return render('gateways.paypal.pay', $data);

    }

    private function getFundingOptions(): string
    {

        $enums = [
            3 => 'paypal',
            1 => 'card',
            25 => 'venmo',
            // 9 => 'sepa',
            // 12 => 'bancontact',
            // 17 => 'eps',
            // 15 => 'giropay',
            // 13 => 'ideal',
            // 26 => 'mercadopago',
            // 27 => 'mybank',
            // 28 => 'paylater',
            // 16 => 'p24',
            // 7 => 'sofort'
        ];

        $funding_options = '';

        foreach($this->company_gateway->fees_and_limits as $key => $value) {

            if($value->is_enabled) {

                $funding_options .= $enums[$key].',';

            }

        }

        return rtrim($funding_options, ',');

    }

    public function processTokenPayment(array $response) {

    }

    public function processPaymentResponse($request)
    {

        $this->init();

        $request['gateway_response'] = str_replace("Error: ", "", $request['gateway_response']);
        $response = json_decode($request['gateway_response'], true);
        
        if(isset($response['gateway_response']['token']) && strlen($response['gateway_response']['token']) > 2)
            return $this->processTokenPayment($response);

        // nlog($response);
        //capture
        $orderID = $response['orderID'];

        if($this->company_gateway->require_shipping_address) {

            $shipping_data =
            [[
                "op" => "replace",
                "path" => "/purchase_units/@reference_id=='default'/shipping/address",
                "value" => [
                    "address_line_1" => strlen($this->client->shipping_address1) > 1 ? $this->client->shipping_address1 : $this->client->address1,
                    "address_line_2" => $this->client->shipping_address2,
                    "admin_area_2" => strlen($this->client->shipping_city) > 1 ? $this->client->shipping_city : $this->client->city,
                    "admin_area_1" => strlen($this->client->shipping_state) > 1 ? $this->client->shipping_state : $this->client->state,
                    "postal_code" => strlen($this->client->shipping_postal_code) > 1 ? $this->client->shipping_postal_code : $this->client->postal_code,
                    "country_code" => $this->client->present()->shipping_country_code(),
                ],
            ]];

            $r = $this->gatewayRequest("/v2/checkout/orders/{$orderID}", 'patch', $shipping_data);

        }

        try{
            $r = $this->gatewayRequest("/v2/checkout/orders/{$orderID}/capture", 'post', ['body' => '']);
        }
        catch(\Exception $e) {

            //Rescue for duplicate invoice_id
            if(stripos($e->getMessage(), 'DUPLICATE_INVOICE_ID') !== false){


                $_invoice = collect($this->payment_hash->data->invoices)->first();
                $invoice = Invoice::withTrashed()->find($this->decodePrimaryKey($_invoice->invoice_id));
                $new_invoice_number = $invoice->number."_".Str::random(5);

                $update_data =
                        [[
                            "op" => "replace",
                            "path" => "/purchase_units/@reference_id=='default'/invoice_id",
                            "value" => $new_invoice_number,
                        ]];

                $r = $this->gatewayRequest("/v2/checkout/orders/{$orderID}", 'patch', $update_data);

                $r = $this->gatewayRequest("/v2/checkout/orders/{$orderID}/capture", 'post', ['body' => '']);

            }

        }

        $response = $r;

        if(isset($response['status']) && $response['status'] == 'COMPLETED' && isset($response['purchase_units'])) {

            nlog($response->json());

            $data = [
                'payment_type' => $this->getPaymentMethod($request->gateway_type_id),
                'amount' => $response['purchase_units'][0]['payments']['captures'][0]['amount']['value'],
                'transaction_reference' => $response['purchase_units'][0]['payments']['captures'][0]['id'],
                'gateway_type_id' => GatewayType::PAYPAL,
            ];

            $payment = $this->createPayment($data, \App\Models\Payment::STATUS_COMPLETED);

            if ($request->has('store_card') && $request->input('store_card') === true) {
                $payment_source = $response->json()['payment_source'];
                
                if(isset($payment_source['card']) && ($payment_source['card']['attributes']['vault']['status'] ?? false) && $payment_source['card']['attributes']['vault']['status'] == 'VAULTED'){

                    $last4 = $payment_source['card']['last_digits'];
                    $expiry = $payment_source['card']['expiry']; //'2025-01'
                    $expiry_meta = explode('-', $expiry);
                    $brand = $payment_source['card']['brand'];

                    $payment_meta = new \stdClass();
                    $payment_meta->exp_month = $expiry_meta[1] ?? '';
                    $payment_meta->exp_year = $expiry_meta[0] ?? $expiry;
                    $payment_meta->brand = $brand;
                    $payment_meta->last4 = $last4;
                    $payment_meta->type = GatewayType::CREDIT_CARD;

                    $token = $payment_source['card']['attributes']['vault']['id']; // 09f28652d01257021
                    $gateway_customer_reference = $payment_source['card']['attributes']['vault']['customer']['id']; //rbTHnLsZqE;

                    $data['token'] = $token;
                    $data['payment_method_id'] = GatewayType::PAYPAL_ADVANCED_CARDS;
                    $data['payment_meta'] = $payment_meta;
                    $data['payment_method_id'] = GatewayType::CREDIT_CARD;

                    $additional['gateway_customer_reference'] = $gateway_customer_reference;

                    $this->storeGatewayToken($data, $additional);

                }
            }

            SystemLogger::dispatch(
                ['response' => $response->json(), 'data' => $data],
                SystemLog::CATEGORY_GATEWAY_RESPONSE,
                SystemLog::EVENT_GATEWAY_SUCCESS,
                SystemLog::TYPE_PAYPAL,
                $this->client,
                $this->client->company,
            );

            return redirect()->route('client.payments.show', ['payment' => $this->encodePrimaryKey($payment->id)]);

        } else {

            if(isset($response['headers']) ?? false) {
                unset($response['headers']);
            }

            SystemLogger::dispatch(
                ['response' => $response],
                SystemLog::CATEGORY_GATEWAY_RESPONSE,
                SystemLog::EVENT_GATEWAY_FAILURE,
                SystemLog::TYPE_PAYPAL,
                $this->client,
                $this->client->company,
            );

            $message = $response['body']['details'][0]['description'] ?? 'Payment failed. Please try again.';

            throw new PaymentFailed($message, 400);
        }

    }

    private function getClientToken(): string
    {

        $r = $this->gatewayRequest('/v1/identity/generate-token', 'post', ['body' => '']);

        if($r->successful()) {
            return $r->json()['client_token'];
        }

        throw new PaymentFailed('Unable to gain client token from Paypal. Check your configuration', 401);

    }

    private function getPaymentSource(): array
    {
        //@todo - roll back here for advanced payments vs hosted card fields.
        if($this->gateway_type_id == GatewayType::PAYPAL_ADVANCED_CARDS) {

            return [
                "card" => [
                    "attributes" => [
                        "verification" => [
                            "method" => "SCA_WHEN_REQUIRED", //SCA_ALWAYS
                            // "method" => "SCA_ALWAYS", //SCA_ALWAYS
                        ],
                        "vault" => [
                            "store_in_vault" => "ON_SUCCESS", //must listen to this webhook - VAULT.PAYMENT-TOKEN.CREATED webhook.
                        ],
                    ],
                "experience_context" => [
                    "shipping_preference" => "SET_PROVIDED_ADDRESS"
                ],
                    // "name" => $this->client->present()->primary_contact_name(),
                    // "email_address" => $this->client->present()->email(),
                    // "address" => [
                    //     "address_line_1" => $this->client->address1,
                    //     "address_line_2" => $this->client->address2,
                    //     "admin_area_2" => $this->client->city,
                    //     "admin_area_1" => $this->client->state,
                    //     "postal_code" => $this->client->postal_code,
                    //     "country_code" => $this->client->country->iso_3166_2,
                    // ],
                    // "experience_context" => [
                    //     "user_action" => "PAY_NOW"
                    // ],
                    "stored_credential" => [
                        // "payment_initiator" => "MERCHANT", //"CUSTOMER" who initiated the transaction?
                        "payment_initiator" => "CUSTOMER", //"" who initiated the transaction?
                        "payment_type" => "UNSCHEDULED", //UNSCHEDULED
                        "usage"=> "DERIVED",
                    ],
                ],
            ];

        }

        return [
            "paypal" => [
                "name" => [
                    "given_name" => $this->client->present()->first_name(),
                    "surname" => $this->client->present()->last_name(),
                ],
                "email_address" => $this->client->present()->email(),
                "address" => [
                    "address_line_1" => $this->client->address1,
                    "address_line_2" => $this->client->address2,
                    "admin_area_2" => $this->client->city,
                    "admin_area_1" => $this->client->state,
                    "postal_code" => $this->client->postal_code,
                    "country_code" => $this->client->country->iso_3166_2,
                ],
                "experience_context" => [
                    "user_action" => "PAY_NOW"
                ],
            ],
        ];

    }


    private function createOrder(array $data): string
    {

        $_invoice = collect($this->payment_hash->data->invoices)->first();

        $invoice = Invoice::withTrashed()->find($this->decodePrimaryKey($_invoice->invoice_id));

        $description = collect($invoice->line_items)->map(function ($item) {
            return $item->notes;
        })->implode("\n");

        $order = [

                "intent" => "CAPTURE",
                "payment_source" => $this->getPaymentSource(),
                "purchase_units" => [
                    [
                    "custom_id" => $this->payment_hash->hash,
                    "description" => ctrans('texts.invoice_number') . '# ' . $invoice->number,
                    "invoice_id" => $invoice->number,
                    // "payment_instruction" => [
                    //     "disbursement_mode" => "INSTANT",
                    // ],
                    $this->getShippingAddress(),
                    "amount" => [
                        "value" => (string) $data['amount_with_fee'],
                        "currency_code" => $this->client->currency()->code,
                        "breakdown" => [
                            "item_total" => [
                                "currency_code" => $this->client->currency()->code,
                                "value" => (string) $data['amount_with_fee']
                            ]
                        ]
                    ],
                    "items" => [
                        [
                            "name" => ctrans('texts.invoice_number') . '# ' . $invoice->number,
                            "description" => mb_substr($description, 0, 127),
                            "quantity" => "1",
                            "unit_amount" => [
                                "currency_code" => $this->client->currency()->code,
                                "value" => (string) $data['amount_with_fee']
                            ],
                        ],
                    ],
                ],
                ]
            ];


        if($shipping = $this->getShippingAddress()) {
            $order['purchase_units'][0]["shipping"] = $shipping;
        }

        nlog($order);
        
        $r = $this->gatewayRequest('/v2/checkout/orders', 'post', $order);

        // nlog($r->json());

        return $r->json()['id'];

    }

    private function getShippingAddress(): ?array
    {
        return $this->company_gateway->require_shipping_address ?
        [
            "address" =>
                [
                    "address_line_1" => strlen($this->client->shipping_address1) > 1 ? $this->client->shipping_address1 : $this->client->address1,
                    "address_line_2" => $this->client->shipping_address2,
                    "admin_area_2" => strlen($this->client->shipping_city) > 1 ? $this->client->shipping_city : $this->client->city,
                    "admin_area_1" => strlen($this->client->shipping_state) > 1 ? $this->client->shipping_state : $this->client->state,
                    "postal_code" => strlen($this->client->shipping_postal_code) > 1 ? $this->client->shipping_postal_code : $this->client->postal_code,
                    "country_code" => $this->client->present()->shipping_country_code(),
                ],
        ]

        : [
            "name" => [
                "full_name" => $this->client->present()->name()
            ]
        ];

    }

    /**
     * Generates the gateway request
     *
     * @param  string $uri
     * @param  string $verb
     * @param  array $data
     * @param  ?array $headers
     * @return \Illuminate\Http\Client\Response
     */
    public function gatewayRequest(string $uri, string $verb, array $data, ?array $headers = [])
    {
        $this->init();

        $r = Http::withToken($this->access_token)
                ->withHeaders($this->getHeaders($headers))
                ->{$verb}("{$this->api_endpoint_url}{$uri}", $data);

        if($r->successful()) {
            return $r;
        }

        SystemLogger::dispatch(
            ['response' => $r->body()],
            SystemLog::CATEGORY_GATEWAY_RESPONSE,
            SystemLog::EVENT_GATEWAY_FAILURE,
            SystemLog::TYPE_PAYPAL,
            $this->client,
            $this->client->company ?? $this->company_gateway->company,
        );

        throw new PaymentFailed("Gateway failure - {$r->body()}", 401);

    }

    private function getHeaders(array $headers = []): array
    {
        return array_merge([
            'Accept' => 'application/json',
            'Content-type' => 'application/json',
            'Accept-Language' => 'en_US',
        ], $headers);
    }

    private function feeCalc($invoice, $invoice_total)
    {
        $invoice->service()->removeUnpaidGatewayFees();
        $invoice = $invoice->fresh();

        $balance = floatval($invoice->balance);

        $_updated_invoice = $invoice->service()->addGatewayFee($this->company_gateway, GatewayType::PAYPAL, $invoice_total)->save();

        if (floatval($_updated_invoice->balance) > $balance) {
            $fee = floatval($_updated_invoice->balance) - $balance;

            $this->payment_hash->fee_total = $fee;
            $this->payment_hash->save();

            return $fee;
        }

        return 0;
    }

    public function auth(): bool
    {

        try {
            $this->init()->getClientToken();
            return true;
        }
        catch(\Exception $e) {

        }

        return false;
    }

    public function importCustomers()
    {
        return true;
    }   

}