namespace Creative.Configuration;

/// <summary>
/// Configuration for the Creative service.
/// Bound from appsettings.json section "Creative".
/// Override via environment variables: Creative__OpenAiApiKey, etc.
/// </summary>
public class CreativeConfig
{
    public const string SectionName = "Creative";

    /// <summary>
    /// When false, returns emulated/mock creative assets.
    /// When true, calls OpenAI and performs real URL scraping.
    /// </summary>
    public bool EnableRealApi { get; set; } = false;

    /// <summary>
    /// OpenAI API key for copy generation.
    /// </summary>
    public string? OpenAiApiKey { get; set; }

    /// <summary>
    /// OpenAI model to use. Default: gpt-4o-mini.
    /// </summary>
    public string OpenAiModel { get; set; } = "gpt-4o-mini";

    /// <summary>
    /// Max tokens for OpenAI responses.
    /// </summary>
    public int OpenAiMaxTokens { get; set; } = 1000;

    /// <summary>
    /// Timeout in seconds for URL scraping.
    /// </summary>
    public int ScrapeTimeoutSeconds { get; set; } = 15;

    /// <summary>
    /// Timeout in seconds for OpenAI API calls.
    /// </summary>
    public int OpenAiTimeoutSeconds { get; set; } = 30;

    // ── Image Provider ──────────────────────────────────────

    /// <summary>
    /// Image provider: "emulated" | "unsplash" | "dalle".
    /// Default: emulated (placeholder images).
    /// </summary>
    public string ImageProvider { get; set; } = "emulated";

    /// <summary>
    /// Unsplash Access Key (optional - basic search works without it,
    /// but rate limits are generous with a free key from unsplash.com/developers).
    /// </summary>
    public string? UnsplashAccessKey { get; set; }

    /// <summary>
    /// Number of images to return per draft. Default: 3
    /// (landscape, square, portrait for responsive display ads).
    /// </summary>
    public int ImageCount { get; set; } = 3;

    /// <summary>
    /// DALL-E model to use when ImageProvider=dalle.
    /// Default: dall-e-3.
    /// </summary>
    public string DalleModel { get; set; } = "dall-e-3";

    /// <summary>
    /// DALL-E image size. Default: 1024x1024.
    /// Options: 1024x1024, 1792x1024, 1024x1792.
    /// </summary>
    public string DalleSize { get; set; } = "1024x1024";
}