//
//  Feed.swift
//  Fervor
//
//  Created by Shadowfacts on 10/29/21.
//

import Foundation

public struct Feed: Decodable {
    public let id: FervorID
    public let title: String
    public let url: URL
    public let serviceURL: URL?
    public let feedURL: URL
    public let lastUpdated: Date
    public let groupIDs: [FervorID]
    
    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        
        self.id = try container.decode(FervorID.self, forKey: .id)
        self.title = try container.decode(String.self, forKey: .title)
        self.url = try container.decode(URL.self, forKey: .url)
        self.serviceURL = try container.decodeIfPresent(URL.self, forKey: .serviceURL)
        self.feedURL = try container.decode(URL.self, forKey: .feedURL)
        self.lastUpdated = try container.decode(Date.self, forKey: .lastUpdated)
        self.groupIDs = try container.decode([FervorID].self, forKey: .groupIDs)
    }
    
    private enum CodingKeys: String, CodingKey {
        case id
        case title
        case url
        case serviceURL = "service_url"
        case feedURL = "feed_url"
        case lastUpdated = "last_updated"
        case groupIDs = "group_ids"
    }
}