//
//  PushSubscription.swift
//  PushNotifications
//
//  Created by Shadowfacts on 4/7/24.
//

import Foundation

public struct PushSubscription {
    let accountID: String
    let endpoint: URL
    let alerts: Alerts
    let policy: Policy
    
    var defaultsDict: [String: Any] {
        [
            "accountID": accountID,
            "endpoint": endpoint.absoluteString,
            "alerts": alerts.rawValue,
            "policy": policy.rawValue
        ]
    }
    
    init?(defaultsDict: [String: Any]) {
        guard let accountID = defaultsDict["accountID"] as? String,
              let endpoint = (defaultsDict["endpoint"] as? String).flatMap(URL.init(string:)),
              let alerts = defaultsDict["alerts"] as? Int,
              let policy = (defaultsDict["policy"] as? String).flatMap(Policy.init(rawValue:)) else {
            return nil
        }
        self.accountID = accountID
        self.endpoint = endpoint
        self.alerts = Alerts(rawValue: alerts)
        self.policy = policy
    }
    
    enum Policy: String {
        case all, followed, followers
    }
    
    struct Alerts: OptionSet {
        static let mention = Alerts(rawValue: 1 << 0)
        static let status = Alerts(rawValue: 1 << 1)
        static let reblog = Alerts(rawValue: 1 << 2)
        static let follow = Alerts(rawValue: 1 << 3)
        static let followRequest = Alerts(rawValue: 1 << 4)
        static let favorite = Alerts(rawValue: 1 << 5)
        static let poll = Alerts(rawValue: 1 << 6)
        static let update = Alerts(rawValue: 1 << 7)

        let rawValue: Int
    }
}