//
//  WidgetData.swift
//  Reader
//
//  Created by Shadowfacts on 6/19/22.
//

import Foundation
import Persistence

struct WidgetData: Codable {
    let recentItems: [Item]
    
    private static func url(for account: LocalData.Account) -> URL {
        let groupContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.net.shadowfacts.Reader")!
        let appSupport = groupContainerURL
            .appendingPathComponent("Library", isDirectory: true)
            .appendingPathComponent("Application Support", isDirectory: true)
        let widgetData = appSupport.appendingPathComponent("Widget Data", isDirectory: true)
        return widgetData
            .appendingPathComponent(account.persistenceKey)
            .appendingPathExtension("plist")
    }
    
    static func load(account: LocalData.Account) -> WidgetData {
        let url = url(for: account)
        let decoder = PropertyListDecoder()
        guard let data = try? Data(contentsOf: url),
              let decoded = try? decoder.decode(WidgetData.self, from: data) else {
            return WidgetData(recentItems: [])
        }
        return decoded
    }
    
    func save(account: LocalData.Account) {
        let encoder = PropertyListEncoder()
        let data = try! encoder.encode(self)
        let url = WidgetData.url(for: account)
        try! FileManager.default.createDirectory(at: url.deletingLastPathComponent(), withIntermediateDirectories: true)
        try! data.write(to: url, options: .noFileProtection)
    }
    
    struct Item: Codable, Identifiable {
        let id: String
        let feedTitle: String?
        let title: String?
        let published: Date?
        
        var launchURL: URL {
            return URL(string: "reader://item/\(id)")!
        }
    }
}