#ifndef SERVER_CONFIG_H
#define SERVER_CONFIG_H

#include <string>
#include <vector>

/**
 * @brief Authentication method enumeration
 */
enum class AuthMethod {
    NONE,       ///< No authentication (allow all access)
    PAM,        ///< PAM authentication
    SHARED_KEY  ///< Shared key authentication
};

/**
 * @brief Authentication configuration structure
 */
struct AuthConfig {
    AuthMethod authMethod      = AuthMethod::NONE;         ///< Primary authentication method
    bool enableGuestAccess     = false;                    ///< Allow unauthenticated access
    std::string sharedKey      = "";                       ///< Shared key for authentication
    std::string pamServiceName = "stable-diffusion-rest";  ///< PAM service name
    std::string dataDir        = "./auth";                 ///< Directory for authentication data
    std::vector<std::string> publicPaths;                  ///< Paths that don't require authentication
    std::vector<std::string> adminPaths;                   ///< Paths that require admin access
    std::vector<std::string> userPaths;                    ///< Paths that require user access
    std::string customPublicPaths;                         ///< Custom public paths (comma-separated)
};

// Server configuration structure
struct ServerConfig {
    // Server settings
    std::string host             = "0.0.0.0";
    int port                     = 8080;
    int maxConcurrentGenerations = 1;
    bool verbose                 = false;
    
    // Connection and timeout settings
    int connectionTimeoutMs       = 500;       // Connection timeout in milliseconds
    int readTimeoutMs            = 500;       // Read timeout in milliseconds
    int writeTimeoutMs           = 500;       // Write timeout in milliseconds
    
    // Generation limits
    int maxPromptLength          = 10000;      // Maximum prompt character length
    int maxNegativePromptLength  = 10000;      // Maximum negative prompt character length
    
    // Graceful shutdown delay
    int shutdownDelayMs          = 100;        // Delay in milliseconds for graceful shutdown

    // Required directory parameter
    std::string modelsDir = "";  // Base models directory (required, must be set via --models-dir)

    // Model type directory parameters
    // All default to standard folder names under modelsDir if not explicitly set
    std::string checkpoints        = "";  // Checkpoints directory (default: checkpoints)
    std::string controlnetDir      = "";  // ControlNet directory (default: controlnet)
    std::string embeddingsDir      = "";  // Embeddings directory (default: embeddings)
    std::string esrganDir          = "";  // ESRGAN directory (default: ESRGAN)
    std::string loraDir            = "";  // LoRA directory (default: loras)
    std::string taesdDir           = "";  // TAESD directory (default: TAESD)
    std::string vaeDir             = "";  // VAE directory (default: vae)
    std::string diffusionModelsDir = "";  // Diffusion models directory (default: diffusion_models)

    // Queue and output directories
    std::string queueDir  = "./queue";   // Directory to store queue job files
    std::string outputDir = "./output";  // Directory to store generated images/videos

    // UI directory (optional - for serving static web UI)
    std::string uiDir = "";  // Directory containing static web UI files

    // Logging options
    bool enableFileLogging  = false;
    std::string logFilePath = "/var/log/stable-diffusion-rest/server.log";

    // Default admin credentials (for initial setup)
    std::string defaultAdminUsername = "admin";
    std::string defaultAdminPassword = "admin123";
    std::string defaultAdminEmail    = "admin@localhost";
    
    // Hash all models option
    bool hashAllModels = false;  // Hash all models during startup
    
    // Authentication configuration
    AuthConfig auth;
};

#endif  // SERVER_CONFIG_H