//
//  Payment.swift
//
//
//  Created by AntonovIA on 12.10.2020.
//

import Foundation

// MARK: - Payment methods

internal enum PaymentMethods: String {
    case shpa = "ac-shpa"
}

// MARK: - Request Message

public struct Payment: Encodable {
    
    // Required:
    
    /// Payment amount in rub
    /// min: 1.00
    public let amount: Decimal
    
    /// Your market order ID
    /// maxlength: 20
    public let orderId: String
    
    // Payment method
    internal let paymentMethod: PaymentMethods = .shpa
    
    // Optional:
    
    /// Human readable `orderId`
    /// Defaults to `orderId`
    var showOrderId: String?
    
    /// Detailed text describing this order payment.
    var details: String?
    
    /// Data about paying customer
    var customer: CustomerData?
    
    // <Not in use>
    var recurrentable: Bool = false
    
    public init(amount: Decimal, orderId: String,
                showOrderId: String? = nil, details: String? = nil,
                customer: CustomerData? = nil, recurrentable: Bool = false) {
        self.amount = amount
        self.orderId = orderId
        self.showOrderId = (showOrderId == nil) ? orderId : showOrderId
        self.details = details
        self.customer = customer
        self.recurrentable = recurrentable
    }
    
    // MARK: - Encoder
    
    private enum CodingKeys: String, CodingKey {
        case amount, orderId, showOrderId, details, recurrentable, customer
    }
    
    public func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        try container.encode(amount, forKey: .amount)
        try container.encode(orderId, forKey: .orderId)
        try container.encode(showOrderId, forKey: .showOrderId)
        try container.encode(details, forKey: .details)
        try container.encode(recurrentable, forKey: .recurrentable)
        
        // Customer
        try customer?.encode(to: encoder)
    }
    
    #if DEBUG
    
    public static let example = Payment(
        amount: 150.00, orderId: String.random(length: 6),
        details: "Wonderful warm socks",
        customer: CustomerData(
            account: "ID-12345", comment: "By tomorrow please",
            email: "foo@bar.com", phone: "+7 900 000 00 00"
        )
    )
    
    #endif
    
}