Struct parruda

//
//  Interaction.swift
//  Elysis
//
//  Created by Rodrigo Matos Aguiar on 10/06/20.
//  Copyright © 2020 Gilberto Magno. All rights reserved.
//

import Foundation

// The possible results from the Sentim API
enum Polarity: String, Codable {
    case positive
    case neutral
    case negative
}

// The struct that will represent each interaction the player does.
struct Interaction {
    var playerAnswer: String
    let answerPolarity: Polarity

    enum CodingKeys: String, CodingKey {
        case playerAnswer
        case result
    }

    enum ResultKeys: String, CodingKey {
        case answerPolarity = "type"
    }
}

extension Interaction: Decodable {
    init(from decoder: Decoder) throws {
        let values = try decoder.container(keyedBy: CodingKeys.self)
        playerAnswer = try values.decodeIfPresent(String.self, forKey: .playerAnswer) ?? ""
        let result = try values.nestedContainer(keyedBy: ResultKeys.self, forKey: .result)
        answerPolarity = try result.decode(Polarity.self, forKey: .answerPolarity)
    }
}

extension Interaction: Encodable {
    func encode(to encoder: Encoder) throws {
        var container = encoder.container(keyedBy: CodingKeys.self)
        try container.encode(playerAnswer, forKey: .playerAnswer)
        var result = container.nestedContainer(keyedBy: ResultKeys.self, forKey: .result)
        try result.encode(answerPolarity, forKey: .answerPolarity)
    }
}