import Foundation

protocol TokenProvider {
    func getToken() async -> String?
    func getEndpoint() async -> String
    func setToken(_ token: String) async
    func clearToken() async
}

class CoreDataTokenProvider: TokenProvider {
    private let settingsRepository = SettingsRepository()
    private var cachedSettings: Settings?
    private var isLoaded = false
    
    private func loadSettingsIfNeeded() async {
        guard !isLoaded else { return }
        
        do {
            cachedSettings = try await settingsRepository.loadSettings()
            isLoaded = true
        } catch {
            print("Failed to load settings: \(error)")
            cachedSettings = nil
        }
    }
    
    func getToken() async -> String? {
        await loadSettingsIfNeeded()
        return cachedSettings?.token
    }
    
    func getEndpoint() async -> String {
        await loadSettingsIfNeeded()
        // Basis-URL ohne /api Suffix, da es in der API-Klasse hinzugefügt wird
        return cachedSettings?.endpoint ?? "https://keep.mnk.any64.de"
    }
    
    func setToken(_ token: String) async {
        await loadSettingsIfNeeded()
        
        do {
            try await settingsRepository.saveToken(token)
            if cachedSettings != nil {
                cachedSettings!.token = token
            }
        } catch {
            print("Failed to save token: \(error)")
        }
    }
    
    func clearToken() async {
        do {
            try await settingsRepository.clearSettings()
            cachedSettings = nil
        } catch {
            print("Failed to clear settings: \(error)")
        }
    }
}