namespace GreenHome.Domain;

/// <summary>
/// AI Query record - stores questions, answers and token usage
/// </summary>
public class AIQuery
{
    /// <summary>
    /// Unique identifier
    /// </summary>
    public int Id { get; set; }

    /// <summary>
    /// Device ID associated with the query (optional)
    /// </summary>
    public int? DeviceId { get; set; }

    /// <summary>
    /// Navigation property to Device
    /// </summary>
    public Device? Device { get; set; }

    /// <summary>
    /// User's question
    /// </summary>
    public required string Question { get; set; }

    /// <summary>
    /// AI's answer
    /// </summary>
    public required string Answer { get; set; }

    /// <summary>
    /// Number of prompt tokens used
    /// </summary>
    public int PromptTokens { get; set; }

    /// <summary>
    /// Number of completion tokens used
    /// </summary>
    public int CompletionTokens { get; set; }

    /// <summary>
    /// Total tokens used (prompt + completion)
    /// </summary>
    public int TotalTokens { get; set; }

    /// <summary>
    /// Model used for the query
    /// </summary>
    public string? Model { get; set; }

    /// <summary>
    /// AI profile used for this query
    /// </summary>
    public int? ProfileId { get; set; }

    /// <summary>
    /// Navigation property to AIProfile
    /// </summary>
    public AIProfile? Profile { get; set; }

    /// <summary>
    /// Estimated cost of the query in USD (0 = not calculable)
    /// </summary>
    public decimal CostUsd { get; set; }

    /// <summary>
    /// Temperature parameter used
    /// </summary>
    public double? Temperature { get; set; }

    /// <summary>
    /// When the query was created
    /// </summary>
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    /// <summary>
    /// Response time in milliseconds
    /// </summary>
    public long? ResponseTimeMs { get; set; }

    /// <summary>
    /// User ID (if authenticated)
    /// </summary>
    public int? UserId { get; set; }

    /// <summary>
    /// Navigation property to User
    /// </summary>
    public User? User { get; set; }
}