namespace GoogleApi.Models;

#region Forecast Payloads

/// <summary>
/// Payload for KeywordForecast operation.
/// Gateway sends targeting + budget; we translate to GenerateKeywordForecastMetrics.
/// </summary>
public sealed class KeywordForecastPayload
{
    /// <summary>Keywords to forecast (from wizard Step 1 URL analysis)</summary>
    public List<string> Keywords { get; set; } = new();

    /// <summary>Geo target IDs (Google Ads geo constants)</summary>
    public List<long> GeoTargetIds { get; set; } = new();

    /// <summary>Monthly budget in whole currency units allocated to this channel</summary>
    public decimal MonthlyBudget { get; set; }

    /// <summary>Currency code</summary>
    public string CurrencyCode { get; set; } = "USD";

    /// <summary>Forecast period in days (default 30)</summary>
    public int ForecastDays { get; set; } = 30;

    /// <summary>Campaign type for bid simulation</summary>
    public CampaignType CampaignType { get; set; } = CampaignType.Search;
}

/// <summary>
/// Response from keyword forecast — monthly estimated metrics.
/// </summary>
public sealed class KeywordForecastResponse
{
    public string Provider { get; set; } = "google";
    public ForecastEstimates Monthly { get; set; } = new();
    public ForecastMetrics Metrics { get; set; } = new();
    public string Confidence { get; set; } = "none";
    public string DataSource { get; set; } = "emulated";
}

public sealed class ForecastEstimates
{
    public double Impressions { get; set; }
    public double Clicks { get; set; }
    public decimal Cost { get; set; }
    public double Conversions { get; set; }
    public double? Reach { get; set; }
}

public sealed class ForecastMetrics
{
    public decimal AvgCpc { get; set; }
    public decimal AvgCpm { get; set; }
    public double Ctr { get; set; }
    public decimal? EstimatedCpa { get; set; }
}

#endregion