pub mod transformers;
use std::sync::LazyLock;

use api_models::webhooks::IncomingWebhookEvent;
use base64::Engine;
use common_enums::enums;
use common_utils::{
    errors::CustomResult,
    ext_traits::ByteSliceExt,
    request::{Method, Request, RequestBuilder, RequestContent},
};
use error_stack::{report, ResultExt};
use hyperswitch_domain_models::{
    router_data::{AccessToken, ErrorResponse, RouterData},
    router_flow_types::{
        access_token_auth::AccessTokenAuth,
        payments::{Authorize, Capture, PSync, PaymentMethodToken, Session, SetupMandate, Void},
        refunds::{Execute, RSync},
    },
    router_request_types::{
        AccessTokenRequestData, PaymentMethodTokenizationData, PaymentsAuthorizeData,
        PaymentsCancelData, PaymentsCaptureData, PaymentsSessionData, PaymentsSyncData,
        RefundsData, SetupMandateRequestData,
    },
    router_response_types::{
        ConnectorInfo, PaymentMethodDetails, PaymentsResponseData, RefundsResponseData,
        SupportedPaymentMethods, SupportedPaymentMethodsExt,
    },
    types::{
        PaymentsAuthorizeRouterData, PaymentsCancelRouterData, PaymentsCaptureRouterData,
        RefundsRouterData,
    },
};
use hyperswitch_interfaces::{
    api::{
        self, ConnectorCommon, ConnectorCommonExt, ConnectorIntegration, ConnectorSpecifications,
        ConnectorValidation,
    },
    configs::Connectors,
    errors,
    events::connector_api_logs::ConnectorEvent,
    types::{
        PaymentsAuthorizeType, PaymentsCaptureType, PaymentsVoidType, RefundExecuteType, Response,
    },
    webhooks::{IncomingWebhook, IncomingWebhookRequestDetails, WebhookContext},
};
use hyperswitch_masking::{ExposeInterface, Mask};
use rand::distributions::DistString;
use ring::hmac;
use transformers as payeezy;

use crate::{constants::headers, types::ResponseRouterData};

#[derive(Debug, Clone)]
pub struct Payeezy;

impl<Flow, Request, Response> ConnectorCommonExt<Flow, Request, Response> for Payeezy
where
    Self: ConnectorIntegration<Flow, Request, Response>,
{
    fn build_headers(
        &self,
        req: &RouterData<Flow, Request, Response>,
        connectors: &Connectors,
    ) -> CustomResult<Vec<(String, hyperswitch_masking::Maskable<String>)>, errors::ConnectorError>
    {
        let auth = payeezy::PayeezyAuthType::try_from(&req.connector_auth_type)?;
        let request_payload = self
            .get_request_body(req, connectors)?
            .get_inner_value()
            .expose();
        let timestamp = std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .ok()
            .ok_or(errors::ConnectorError::RequestEncodingFailed)?
            .as_millis()
            .to_string();
        let nonce = rand::distributions::Alphanumeric.sample_string(&mut rand::thread_rng(), 19);
        let signature_string = auth.api_key.clone().zip(auth.merchant_token.clone()).map(
            |(api_key, merchant_token)| {
                format!("{api_key}{nonce}{timestamp}{merchant_token}{request_payload}")
            },
        );
        let key = hmac::Key::new(hmac::HMAC_SHA256, auth.api_secret.expose().as_bytes());
        let tag = hmac::sign(&key, signature_string.expose().as_bytes());
        let hmac_sign = hex::encode(tag);
        let signature_value = common_utils::consts::BASE64_ENGINE_URL_SAFE.encode(hmac_sign);
        Ok(vec![
            (
                headers::CONTENT_TYPE.to_string(),
                Self.get_content_type().to_string().into(),
            ),
            (headers::APIKEY.to_string(), auth.api_key.into_masked()),
            (
                headers::TOKEN.to_string(),
                auth.merchant_token.into_masked(),
            ),
            (
                headers::AUTHORIZATION.to_string(),
                signature_value.into_masked(),
            ),
            (headers::NONCE.to_string(), nonce.into_masked()),
            (headers::TIMESTAMP.to_string(), timestamp.into()),
        ])
    }
}

impl ConnectorCommon for Payeezy {
    fn id(&self) -> &'static str {
        "payeezy"
    }

    fn get_currency_unit(&self) -> api::CurrencyUnit {
        api::CurrencyUnit::Base
    }

    fn common_get_content_type(&self) -> &'static str {
        "application/json"
    }

    fn base_url<'a>(&self, connectors: &'a Connectors) -> &'a str {
        connectors.payeezy.base_url.as_ref()
    }

    fn build_error_response(
        &self,
        res: Response,
        event_builder: Option<&mut ConnectorEvent>,
    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
        let response: payeezy::PayeezyErrorResponse = res
            .response
            .parse_struct("payeezy ErrorResponse")
            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;

        event_builder.map(|i| i.set_error_response_body(&response));
        router_env::logger::info!(connector_response=?response);

        let error_messages: Vec<String> = response
            .error
            .messages
            .iter()
            .map(|m| m.description.clone())
            .collect();

        Ok(ErrorResponse {
            status_code: res.status_code,
            code: response.transaction_status,
            message: error_messages.join(", "),
            reason: None,
            attempt_status: None,
            connector_transaction_id: None,
            connector_response_reference_id: None,
            network_advice_code: None,
            network_decline_code: None,
            network_error_message: None,
            connector_metadata: None,
        })
    }
}

impl ConnectorValidation for Payeezy {}

impl api::Payment for Payeezy {}

impl api::MandateSetup for Payeezy {}
impl ConnectorIntegration<SetupMandate, SetupMandateRequestData, PaymentsResponseData> for Payeezy {
    fn build_request(
        &self,
        _req: &RouterData<SetupMandate, SetupMandateRequestData, PaymentsResponseData>,
        _connectors: &Connectors,
    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
        Err(
            errors::ConnectorError::NotImplemented("Setup Mandate flow for Payeezy".to_string())
                .into(),
        )
    }
}

impl api::PaymentToken for Payeezy {}

impl ConnectorIntegration<PaymentMethodToken, PaymentMethodTokenizationData, PaymentsResponseData>
    for Payeezy
{
    // Not Implemented (R)
}

impl api::PaymentVoid for Payeezy {}

impl ConnectorIntegration<Void, PaymentsCancelData, PaymentsResponseData> for Payeezy {
    fn get_headers(
        &self,
        req: &PaymentsCancelRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Vec<(String, hyperswitch_masking::Maskable<String>)>, errors::ConnectorError>
    {
        self.build_headers(req, connectors)
    }

    fn get_content_type(&self) -> &'static str {
        self.common_get_content_type()
    }

    fn get_url(
        &self,
        req: &PaymentsCancelRouterData,
        connectors: &Connectors,
    ) -> CustomResult<String, errors::ConnectorError> {
        let connector_payment_id = req.request.connector_transaction_id.clone();
        Ok(format!(
            "{}v1/transactions/{}",
            self.base_url(connectors),
            connector_payment_id
        ))
    }

    fn get_request_body(
        &self,
        req: &PaymentsCancelRouterData,
        _connectors: &Connectors,
    ) -> CustomResult<RequestContent, errors::ConnectorError> {
        let connector_req = payeezy::PayeezyCaptureOrVoidRequest::try_from(req)?;
        Ok(RequestContent::Json(Box::new(connector_req)))
    }

    fn build_request(
        &self,
        req: &PaymentsCancelRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
        Ok(Some(
            RequestBuilder::new()
                .method(Method::Post)
                .url(&PaymentsVoidType::get_url(self, req, connectors)?)
                .headers(PaymentsVoidType::get_headers(self, req, connectors)?)
                .set_body(PaymentsVoidType::get_request_body(self, req, connectors)?)
                .build(),
        ))
    }

    fn handle_response(
        &self,
        data: &PaymentsCancelRouterData,
        event_builder: Option<&mut ConnectorEvent>,
        res: Response,
    ) -> CustomResult<PaymentsCancelRouterData, errors::ConnectorError> {
        let response: payeezy::PayeezyPaymentsResponse = res
            .response
            .parse_struct("Payeezy PaymentsResponse")
            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;

        event_builder.map(|i| i.set_response_body(&response));
        router_env::logger::info!(connector_response=?response);

        RouterData::try_from(ResponseRouterData {
            response,
            data: data.clone(),
            http_code: res.status_code,
        })
        .change_context(errors::ConnectorError::ResponseHandlingFailed)
    }

    fn get_error_response(
        &self,
        res: Response,
        event_builder: Option<&mut ConnectorEvent>,
    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
        self.build_error_response(res, event_builder)
    }
}

impl api::ConnectorAccessToken for Payeezy {}

impl ConnectorIntegration<AccessTokenAuth, AccessTokenRequestData, AccessToken> for Payeezy {}

impl api::PaymentSync for Payeezy {}
impl ConnectorIntegration<PSync, PaymentsSyncData, PaymentsResponseData> for Payeezy {
    // default implementation of build_request method will be executed
}

impl api::PaymentCapture for Payeezy {}
impl ConnectorIntegration<Capture, PaymentsCaptureData, PaymentsResponseData> for Payeezy {
    fn get_headers(
        &self,
        req: &PaymentsCaptureRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Vec<(String, hyperswitch_masking::Maskable<String>)>, errors::ConnectorError>
    {
        self.build_headers(req, connectors)
    }

    fn get_content_type(&self) -> &'static str {
        self.common_get_content_type()
    }

    fn get_url(
        &self,
        req: &PaymentsCaptureRouterData,
        connectors: &Connectors,
    ) -> CustomResult<String, errors::ConnectorError> {
        let connector_payment_id = req.request.connector_transaction_id.clone();
        Ok(format!(
            "{}v1/transactions/{}",
            self.base_url(connectors),
            connector_payment_id
        ))
    }

    fn get_request_body(
        &self,
        req: &PaymentsCaptureRouterData,
        _connectors: &Connectors,
    ) -> CustomResult<RequestContent, errors::ConnectorError> {
        let router_obj = payeezy::PayeezyRouterData::try_from((
            &self.get_currency_unit(),
            req.request.currency,
            req.request.amount_to_capture,
            req,
        ))?;
        let connector_req = payeezy::PayeezyCaptureOrVoidRequest::try_from(&router_obj)?;

        Ok(RequestContent::Json(Box::new(connector_req)))
    }

    fn build_request(
        &self,
        req: &PaymentsCaptureRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
        Ok(Some(
            RequestBuilder::new()
                .method(Method::Post)
                .url(&PaymentsCaptureType::get_url(self, req, connectors)?)
                .headers(PaymentsCaptureType::get_headers(self, req, connectors)?)
                .set_body(PaymentsCaptureType::get_request_body(
                    self, req, connectors,
                )?)
                .build(),
        ))
    }

    fn handle_response(
        &self,
        data: &PaymentsCaptureRouterData,
        event_builder: Option<&mut ConnectorEvent>,
        res: Response,
    ) -> CustomResult<PaymentsCaptureRouterData, errors::ConnectorError> {
        let response: payeezy::PayeezyPaymentsResponse = res
            .response
            .parse_struct("Payeezy PaymentsResponse")
            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;

        event_builder.map(|i| i.set_response_body(&response));
        router_env::logger::info!(connector_response=?response);

        RouterData::try_from(ResponseRouterData {
            response,
            data: data.clone(),
            http_code: res.status_code,
        })
        .change_context(errors::ConnectorError::ResponseHandlingFailed)
    }

    fn get_error_response(
        &self,
        res: Response,
        event_builder: Option<&mut ConnectorEvent>,
    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
        self.build_error_response(res, event_builder)
    }
}

impl api::PaymentSession for Payeezy {}

impl ConnectorIntegration<Session, PaymentsSessionData, PaymentsResponseData> for Payeezy {
    //TODO: implement sessions flow
}

impl api::PaymentAuthorize for Payeezy {}

impl ConnectorIntegration<Authorize, PaymentsAuthorizeData, PaymentsResponseData> for Payeezy {
    fn get_headers(
        &self,
        req: &PaymentsAuthorizeRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Vec<(String, hyperswitch_masking::Maskable<String>)>, errors::ConnectorError>
    {
        self.build_headers(req, connectors)
    }

    fn get_content_type(&self) -> &'static str {
        self.common_get_content_type()
    }

    fn get_url(
        &self,
        _req: &PaymentsAuthorizeRouterData,
        connectors: &Connectors,
    ) -> CustomResult<String, errors::ConnectorError> {
        Ok(format!("{}v1/transactions", self.base_url(connectors)))
    }

    fn get_request_body(
        &self,
        req: &PaymentsAuthorizeRouterData,
        _connectors: &Connectors,
    ) -> CustomResult<RequestContent, errors::ConnectorError> {
        let router_obj = payeezy::PayeezyRouterData::try_from((
            &self.get_currency_unit(),
            req.request.currency,
            req.request.amount,
            req,
        ))?;
        let connector_req = payeezy::PayeezyPaymentsRequest::try_from(&router_obj)?;

        Ok(RequestContent::Json(Box::new(connector_req)))
    }

    fn build_request(
        &self,
        req: &PaymentsAuthorizeRouterData,
        connectors: &Connectors,
    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
        Ok(Some(
            RequestBuilder::new()
                .method(Method::Post)
                .url(&PaymentsAuthorizeType::get_url(self, req, connectors)?)
                .headers(PaymentsAuthorizeType::get_headers(self, req, connectors)?)
                .set_body(PaymentsAuthorizeType::get_request_body(
                    self, req, connectors,
                )?)
                .build(),
        ))
    }

    fn handle_response(
        &self,
        data: &PaymentsAuthorizeRouterData,
        event_builder: Option<&mut ConnectorEvent>,
        res: Response,
    ) -> CustomResult<PaymentsAuthorizeRouterData, errors::ConnectorError> {
        let response: payeezy::PayeezyPaymentsResponse = res
            .response
            .parse_struct("payeezy Response")
            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;

        event_builder.map(|i| i.set_response_body(&response));
        router_env::logger::info!(connector_response=?response);

        RouterData::try_from(ResponseRouterData {
            response,
            data: data.clone(),
            http_code: res.status_code,
        })
        .change_context(errors::ConnectorError::ResponseHandlingFailed)
    }

    fn get_error_response(
        &self,
        res: Response,
        event_builder: Option<&mut ConnectorEvent>,
    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
        self.build_error_response(res, event_builder)
    }
}

impl api::Refund for Payeezy {}
impl api::RefundExecute for Payeezy {}
impl api::RefundSync for Payeezy {}

impl ConnectorIntegration<Execute, RefundsData, RefundsResponseData> for Payeezy {
    fn get_headers(
        &self,
        req: &RefundsRouterData<Execute>,
        connectors: &Connectors,
    ) -> CustomResult<Vec<(String, hyperswitch_masking::Maskable<String>)>, errors::ConnectorError>
    {
        self.build_headers(req, connectors)
    }

    fn get_content_type(&self) -> &'static str {
        self.common_get_content_type()
    }

    fn get_url(
        &self,
        req: &RefundsRouterData<Execute>,
        connectors: &Connectors,
    ) -> CustomResult<String, errors::ConnectorError> {
        let connector_payment_id = req.request.connector_transaction_id.clone();
        Ok(format!(
            "{}v1/transactions/{}",
            self.base_url(connectors),
            connector_payment_id
        ))
    }

    fn get_request_body(
        &self,
        req: &RefundsRouterData<Execute>,
        _connectors: &Connectors,
    ) -> CustomResult<RequestContent, errors::ConnectorError> {
        let router_obj = payeezy::PayeezyRouterData::try_from((
            &self.get_currency_unit(),
            req.request.currency,
            req.request.refund_amount,
            req,
        ))?;
        let connector_req = payeezy::PayeezyRefundRequest::try_from(&router_obj)?;
        Ok(RequestContent::Json(Box::new(connector_req)))
    }

    fn build_request(
        &self,
        req: &RefundsRouterData<Execute>,
        connectors: &Connectors,
    ) -> CustomResult<Option<Request>, errors::ConnectorError> {
        let request = RequestBuilder::new()
            .method(Method::Post)
            .url(&RefundExecuteType::get_url(self, req, connectors)?)
            .headers(RefundExecuteType::get_headers(self, req, connectors)?)
            .set_body(RefundExecuteType::get_request_body(self, req, connectors)?)
            .build();
        Ok(Some(request))
    }

    fn handle_response(
        &self,
        data: &RefundsRouterData<Execute>,
        event_builder: Option<&mut ConnectorEvent>,
        res: Response,
    ) -> CustomResult<RefundsRouterData<Execute>, errors::ConnectorError> {
        // Parse the response into a payeezy::RefundResponse
        let response: payeezy::RefundResponse = res
            .response
            .parse_struct("payeezy RefundResponse")
            .change_context(errors::ConnectorError::ResponseDeserializationFailed)?;

        event_builder.map(|i| i.set_response_body(&response));
        router_env::logger::info!(connector_response=?response);

        // Create a new instance of types::RefundsRouterData based on the response, input data, and HTTP code
        let response_data = ResponseRouterData {
            response,
            data: data.clone(),
            http_code: res.status_code,
        };
        let router_data = RouterData::try_from(response_data)
            .change_context(errors::ConnectorError::ResponseHandlingFailed)?;

        Ok(router_data)
    }

    fn get_error_response(
        &self,
        res: Response,
        event_builder: Option<&mut ConnectorEvent>,
    ) -> CustomResult<ErrorResponse, errors::ConnectorError> {
        self.build_error_response(res, event_builder)
    }
}

impl ConnectorIntegration<RSync, RefundsData, RefundsResponseData> for Payeezy {
    // default implementation of build_request method will be executed
}

#[async_trait::async_trait]
impl IncomingWebhook for Payeezy {
    fn get_webhook_object_reference_id(
        &self,
        _request: &IncomingWebhookRequestDetails<'_>,
    ) -> CustomResult<api_models::webhooks::ObjectReferenceId, errors::ConnectorError> {
        Err(report!(errors::ConnectorError::WebhooksNotImplemented))
    }

    fn get_webhook_event_type(
        &self,
        _request: &IncomingWebhookRequestDetails<'_>,
        _context: Option<&WebhookContext>,
    ) -> CustomResult<IncomingWebhookEvent, errors::ConnectorError> {
        Ok(IncomingWebhookEvent::EventNotSupported)
    }

    fn get_webhook_resource_object(
        &self,
        _request: &IncomingWebhookRequestDetails<'_>,
    ) -> CustomResult<Box<dyn hyperswitch_masking::ErasedMaskSerialize>, errors::ConnectorError>
    {
        Err(report!(errors::ConnectorError::WebhooksNotImplemented))
    }
}

static PAYEEZY_SUPPORTED_PAYMENT_METHODS: LazyLock<SupportedPaymentMethods> = LazyLock::new(|| {
    let supported_capture_methods = vec![
        enums::CaptureMethod::Automatic,
        enums::CaptureMethod::Manual,
        enums::CaptureMethod::SequentialAutomatic,
    ];

    let supported_card_networks = vec![
        common_enums::CardNetwork::Mastercard,
        common_enums::CardNetwork::Visa,
        common_enums::CardNetwork::AmericanExpress,
        common_enums::CardNetwork::Discover,
    ];

    let mut payeezy_supported_payment_methods = SupportedPaymentMethods::new();

    payeezy_supported_payment_methods.add(
        enums::PaymentMethod::Card,
        enums::PaymentMethodType::Credit,
        PaymentMethodDetails {
            mandates: enums::FeatureStatus::Supported,
            refunds: enums::FeatureStatus::Supported,
            supported_capture_methods,
            specific_features: Some(
                api_models::feature_matrix::PaymentMethodSpecificFeatures::Card({
                    api_models::feature_matrix::CardSpecificFeatures {
                        three_ds: common_enums::FeatureStatus::NotSupported,
                        no_three_ds: common_enums::FeatureStatus::Supported,
                        supported_card_networks,
                    }
                }),
            ),
        },
    );

    payeezy_supported_payment_methods
});

static PAYEEZY_CONNECTOR_INFO: ConnectorInfo = ConnectorInfo {
    display_name: "Payeezy",
    description: "Payeezy is a payment gateway platform that facilitates online and mobile payment processing for businesses. It provides a range of features, including support for various payment methods, security features like PCI-DSS compliance and tokenization, and tools for managing transactions and customer interactions.",
    connector_type: enums::HyperswitchConnectorCategory::PaymentGateway,
    integration_status: enums::ConnectorIntegrationStatus::Alpha,
};

static PAYEEZY_SUPPORTED_WEBHOOK_FLOWS: [enums::EventClass; 0] = [];

impl ConnectorSpecifications for Payeezy {
    fn get_connector_about(&self) -> Option<&'static ConnectorInfo> {
        Some(&PAYEEZY_CONNECTOR_INFO)
    }

    fn get_supported_payment_methods(&self) -> Option<&'static SupportedPaymentMethods> {
        Some(&*PAYEEZY_SUPPORTED_PAYMENT_METHODS)
    }

    fn get_supported_webhook_flows(&self) -> Option<&'static [enums::EventClass]> {
        Some(&PAYEEZY_SUPPORTED_WEBHOOK_FLOWS)
    }
}
