//
//  LocalKeysStore.swift
//  Zyquo Router
//
//  Author: Simon-Pierre Boucher
//  Mail: contact@spboucher.ai
//
//  Local router API keys (`zyquo-sk-…`): create (token shown once), rename,
//  enable/disable, revoke. Hashes persist in local-keys.json; the server
//  snapshot is taken at Start.
//

import Foundation

@MainActor
final class LocalKeysStore: ObservableObject {
    static let fileName = "local-keys.json"

    @Published private(set) var keys: [APIKeyRecord]

    private let persistence: PersistenceService

    init(persistence: PersistenceService = .shared) {
        self.persistence = persistence
        keys = persistence.load([APIKeyRecord].self, from: Self.fileName) ?? []
    }

    /// Creates a key and returns the plaintext token — shown exactly once.
    func create(name: String) -> String {
        let (record, token) = APIKeyRecord.generate(name: name.isEmpty ? "Untitled key" : name)
        keys.append(record)
        save()
        return token
    }

    func setEnabled(_ enabled: Bool, for id: UUID) {
        guard let index = keys.firstIndex(where: { $0.id == id }) else { return }
        keys[index].enabled = enabled
        save()
    }

    func revoke(_ id: UUID) {
        keys.removeAll { $0.id == id }
        save()
    }

    var hasEnabledKey: Bool {
        keys.contains(where: \.enabled)
    }

    private func save() {
        persistence.save(keys, to: Self.fileName)
    }
}