import Foundation

/// Server configuration loaded from environment variables
public struct Config: Sendable {
    /// Host to bind the server to (default: 0.0.0.0 for LAN access)
    public let host: String

    /// Port to listen on (default: 50051)
    public let port: Int

    /// Optional API key for authentication via gRPC metadata
    public let apiKey: String?

    /// Initialize configuration from environment variables
    public init() {
        self.host = ProcessInfo.processInfo.environment["GRPC_HOST"] ?? "0.0.0.0"
        self.port = Int(ProcessInfo.processInfo.environment["GRPC_PORT"] ?? "50051") ?? 50051
        self.apiKey = ProcessInfo.processInfo.environment["API_KEY"]
    }

    /// Initialize with explicit values (for testing)
    public init(host: String, port: Int, apiKey: String? = nil) {
        self.host = host
        self.port = port
        self.apiKey = apiKey
    }
}