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

import Foundation

public struct Item: Decodable, Sendable {
    private static let urlParseStrategy = URL.ParseStrategy()
        .scheme(.defaultValue("https"))
        .user(.optional)
        .password(.optional)
        .host(.required)
        .port(.defaultValue(8080))
        .path(.optional)
        .query(.optional)
        .fragment(.optional)
    
    public let id: FervorID
    public let feedID: FervorID
    public let title: String?
    public let author: String?
    public let published: Date?
    public let createdAt: Date?
    public let content: String?
    public let summary: String?
    public let url: URL
    public let serviceURL: URL?
    public let read: Bool?
    
    public init(from decoder: Decoder) throws {
        let container = try decoder.container(keyedBy: CodingKeys.self)
        
        self.id = try container.decode(FervorID.self, forKey: .id)
        self.feedID = try container.decode(FervorID.self, forKey: .feedID)
        self.title = try container.decodeIfPresent(String.self, forKey: .title)
        self.author = try container.decodeIfPresent(String.self, forKey: .author)
        self.published = try container.decodeIfPresent(Date.self, forKey: .published)
        self.createdAt = try container.decodeIfPresent(Date.self, forKey: .createdAt)
        self.content = try container.decodeIfPresent(String.self, forKey: .content)
        self.summary = try container.decodeIfPresent(String.self, forKey: .summary)
        let urlStr = try container.decode(String.self, forKey: .url)
        self.url = try Self.urlParseStrategy.parse(urlStr)
        self.serviceURL = try container.decodeIfPresent(URL.self, forKey: .serviceURL)
        self.read = try container.decodeIfPresent(Bool.self, forKey: .read)
    }
    
    private enum CodingKeys: String, CodingKey {
        case id
        case feedID = "feed_id"
        case title
        case author
        case published
        case createdAt = "created_at"
        case content
        case summary
        case url
        case serviceURL = "service_url"
        case read
    }
}