//
//  PaymentOptionDisplayData+ReactNative.swift
//  stripe-react-native
//
//  Created by Nick Porter on 4/16/25.
//

import Foundation
@_spi(EmbeddedPaymentElementPrivateBeta) import StripePaymentSheet

extension EmbeddedPaymentElement.PaymentOptionDisplayData {
    /// Convert `PaymentOptionDisplayData` into a dictionary compatible with React Native bridge.
    func toDictionary() -> [String: Any] {
        // Convert UIImage to Base64
        let imageBase64: String = {
            guard let data = image.pngData() else { return "" }
            return data.base64EncodedString()
        }()

        // Convert BillingDetails to a dictionary
        let billingDetailsDict: [String: Any] = {
            guard let billing = billingDetails else {
                return [:]
            }

            // Extract address
            let addressDict: [String: Any] = {
                let addr = billing.address
                return [
                    "city": addr.city ?? "",
                    "country": addr.country ?? "",
                    "line1": addr.line1 ?? "",
                    "line2": addr.line2 ?? "",
                    "postalCode": addr.postalCode ?? "",
                    "state": addr.state ?? "",
                ]
            }()

            return [
                "name": billing.name ?? "",
                "email": billing.email ?? "",
                "phone": billing.phone ?? "",
                "address": addressDict,
            ]
        }()

        // Convert NSAttributedString mandateText to HTML
        let mandateTextHTML: String? = {
            guard let mandateText = mandateText else { return nil }

            do {
                let htmlData = try mandateText.data(
                    from: NSRange(location: 0, length: mandateText.length),
                    documentAttributes: [
                        .documentType: NSAttributedString.DocumentType.html,
                        .characterEncoding: String.Encoding.utf8.rawValue,
                    ]
                )
                return String(data: htmlData, encoding: .utf8)
            } catch {
                // Fallback to plain string if HTML conversion fails
                return mandateText.string
            }
        }()

        // Return as a dictionary
        return [
            "image": imageBase64,
            "label": label,
            "billingDetails": billingDetailsDict,
            "paymentMethodType": paymentMethodType,
            "mandateHTML": mandateTextHTML,
        ]
    }
}