import Foundation

enum AIConfiguration {
    /// OpenAI API key used by Post Generator, Title Optimizer, and Comment Writer.
    /// Priority: `OPENAI_API_KEY` environment variable (dev builds), then bundled encrypted key.
    static var apiKey: String? {
        if let cachedAPIKey {
            return cachedAPIKey
        }

        if let envKey = ProcessInfo.processInfo.environment["OPENAI_API_KEY"],
           !envKey.trimmingCharacters(in: .whitespaces).isEmpty {
            cachedAPIKey = envKey.trimmingCharacters(in: .whitespaces)
            return cachedAPIKey
        }

        cachedAPIKey = EncryptedOpenAIKey.openAIAPIKey()
        return cachedAPIKey
    }

    private static var cachedAPIKey: String?

    static func usesLiveAI(hasPremiumAccess: Bool, canUseFreeTrial: Bool = false) -> Bool {
        guard apiKey != nil else { return false }
        return hasPremiumAccess || canUseFreeTrial
    }
}