import Foundation

/// A single notification returned by the relay for a given feed.
public struct OrgSocialNotification: Sendable, Identifiable {

    public enum Kind: String, Sendable {
        case mention
        case reaction
        case reply
        case boost
        case unknown
    }

    /// Unique ID: kind + post URL combined (the relay can return the same post URL for different kinds).
    public var id: String { "\(kind.rawValue):\(post)" }

    /// What kind of interaction this is.
    public var kind: Kind

    /// URL of the post that triggered the notification (e.g. `https://shom.dev/social.org#2025-…`).
    public var post: String

    /// For reactions: the emoji used.
    public var emoji: String?

    /// The post that was reacted/replied to (nil for mentions).
    public var parent: String?

    /// Nick/author extracted from the triggering post URL (everything before the first `#`).
    public var authorFeedURL: URL? {
        let base = post.components(separatedBy: "#").first ?? post
        return URL(string: base)
    }

    public init(kind: Kind, post: String, emoji: String? = nil, parent: String? = nil) {
        self.kind = kind
        self.post = post
        self.emoji = emoji
        self.parent = parent
    }
}