namespace GermanApp.Infrastructure.Configuration;

/// <summary>
/// Configuration settings for Mistral API connector.
/// This is part of the Infrastructure layer.
/// </summary>
public class MistralConfig
{
    /// <summary>
    /// The Mistral API key for authentication.
    /// </summary>
    public string ApiKey { get; set; } = string.Empty;

    /// <summary>
    /// The base URL for the Mistral API.
    /// Default: https://api.mistral.ai/v1/
    /// </summary>
    public string BaseUrl { get; set; } = "https://api.mistral.ai/v1/";

    /// <summary>
    /// The default model to use for completions.
    /// Default: mistral-small-latest
    /// </summary>
    public string DefaultModel { get; set; } = "mistral-small-latest";

    /// <summary>
    /// Timeout in seconds for HTTP requests.
    /// Default: 30 seconds
    /// </summary>
    public int TimeoutSeconds { get; set; } = 30;

    /// <summary>
    /// Maximum number of retry attempts for failed requests.
    /// Default: 3
    /// </summary>
    public int MaxRetries { get; set; } = 3;

    /// <summary>
    /// Maximum requests per minute rate limit.
    /// Default: 10 requests/minute
    /// </summary>
    public int RateLimitPerMinute { get; set; } = 10;

    /// <summary>
    /// Whether to enable response caching.
    /// Default: true
    /// </summary>
    public bool EnableCaching { get; set; } = true;

    /// <summary>
    /// Cache time-to-live in minutes.
    /// Default: 60 minutes
    /// </summary>
    public int CacheTTLMinutes { get; set; } = 60;

    /// <summary>
    /// Circuit breaker failure threshold (number of consecutive failures before opening).
    /// Default: 5
    /// </summary>
    public int CircuitBreakerFailureThreshold { get; set; } = 5;

    /// <summary>
    /// Circuit breaker reset timeout in minutes.
    /// Default: 1 minute
    /// </summary>
    public int CircuitBreakerResetMinutes { get; set; } = 1;

    /// <summary>
    /// Validates the configuration.
    /// </summary>
    /// <exception cref="ArgumentException">Thrown when configuration is invalid</exception>
    public void Validate()
    {
        if (string.IsNullOrWhiteSpace(ApiKey))
        {
            throw new ArgumentException("Mistral API key is required");
        }

        if (string.IsNullOrWhiteSpace(BaseUrl))
        {
            throw new ArgumentException("Mistral BaseUrl is required");
        }

        if (!Uri.TryCreate(BaseUrl, UriKind.Absolute, out _))
        {
            throw new ArgumentException("Mistral BaseUrl must be a valid URL");
        }

        if (TimeoutSeconds <= 0)
        {
            throw new ArgumentException("TimeoutSeconds must be greater than 0");
        }

        if (MaxRetries < 0)
        {
            throw new ArgumentException("MaxRetries must be non-negative");
        }

        if (RateLimitPerMinute <= 0)
        {
            throw new ArgumentException("RateLimitPerMinute must be greater than 0");
        }

        if (CacheTTLMinutes < 0)
        {
            throw new ArgumentException("CacheTTLMinutes must be non-negative");
        }

        if (CircuitBreakerFailureThreshold <= 0)
        {
            throw new ArgumentException("CircuitBreakerFailureThreshold must be greater than 0");
        }

        if (CircuitBreakerResetMinutes <= 0)
        {
            throw new ArgumentException("CircuitBreakerResetMinutes must be greater than 0");
        }
    }
}