//
//  Review+Codable.swift
//  ReviewsiTunesKit
//
//  Created by Javier Cicchelli on 17/03/2024.
//  Copyright © 2024 Röck+Cöde VoF. All rights reserved.
//

import Foundation
import ReviewsFeedKit

// MARK: - Decodable
extension Review: Decodable {
    
    // MARK: Enumerations
    enum ReviewKeys: String, CodingKey {
        case author
        case content
        case id
        case rating = "im:rating"
        case title
        case updated
        case version = "im:version"
    }
    
    enum NameKeys: String, CodingKey {
        case name
    }
    
    enum LabelKeys: String, CodingKey {
        case label
    }
    
    // MARK: Initialisers
    public init(from decoder: any Decoder) throws {
        let review = try decoder.container(keyedBy: ReviewKeys.self)
        let authorName = try review.nestedContainer(keyedBy: NameKeys.self, forKey: .author)
        let authorLabel = try authorName.nestedContainer(keyedBy: LabelKeys.self, forKey: .name)
        let contentLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .content)
        let idLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .id)
        let ratingLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .rating)
        let titleLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .title)
        let versionLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .version)
        let updatedLabel = try review.nestedContainer(keyedBy: LabelKeys.self, forKey: .updated)

        self.init(
            id: Int(try idLabel.decode(String.self, forKey: .label)) ?? 0,
            author: try authorLabel.decode(String.self, forKey: .label),
            title: try titleLabel.decode(String.self, forKey: .label),
            content: try contentLabel.decode(String.self, forKey: .label),
            rating: Int(try ratingLabel.decode(String.self, forKey: .label)) ?? 0,
            version: try versionLabel.decode(String.self, forKey: .label),
            updated: try updatedLabel.decode(Date.self, forKey: .label)
        )
    }
    
}

// MARK: - Encodable
extension Review: Encodable {
    
    // MARK: Functions
    
    public func encode(to encoder: any Encoder) throws {
        var review = encoder.container(keyedBy: ReviewKeys.self)
        var authorName = review.nestedContainer(keyedBy: NameKeys.self, forKey: .author)
        var authorLabel = authorName.nestedContainer(keyedBy: LabelKeys.self, forKey: .name)
        var contentLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .content)
        var idLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .id)
        var ratingLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .rating)
        var titleLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .title)
        var versionLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .version)
        var updatedLabel = review.nestedContainer(keyedBy: LabelKeys.self, forKey: .updated)

        try authorLabel.encode(author, forKey: .label)
        try contentLabel.encode(content, forKey: .label)
        try idLabel.encode(String(id), forKey: .label)
        try ratingLabel.encode(String(rating), forKey: .label)
        try titleLabel.encode(title, forKey: .label)
        try versionLabel.encode(version, forKey: .label)
        try updatedLabel.encode(updated, forKey: .label)
    }
    
}