// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Data.Common;
 
namespace Aspire.OpenAI;
 
/// <summary>
/// The settings relevant to accessing OpenAI.
/// </summary>
public sealed class OpenAISettings
{
    private const string ConnectionStringEndpoint = "Endpoint";
    private const string ConnectionStringKey = "Key";
 
    /// <summary>
    /// Gets or sets a <see cref="Uri"/> referencing the OpenAI REST API endpoint.
    /// Leave empty to connect to OpenAI, or set it to use a service using an API compatible with OpenAI.
    /// </summary>
    public Uri? Endpoint { get; set; }
 
    /// <summary>
    /// Gets or sets a the API key to used to authenticate with the service.
    /// </summary>
    public string? Key { get; set; }
 
    /// <summary>
    /// Gets or sets a boolean value that indicates whether the OpenTelemetry metrics are enabled or not.
    /// </summary>
    public bool DisableMetrics { get; set; }
 
    /// <summary>
    /// Gets or sets a boolean value that indicates whether the OpenTelemetry tracing is disabled or not.
    /// </summary>
    public bool DisableTracing { get; set; }
 
    /// <summary>
    /// Gets or sets a boolean value indicating whether potentially sensitive information should be included in telemetry.
    /// </summary>
    /// <value>
    /// <see langword="true"/> if potentially sensitive information should be included in telemetry;
    /// <see langword="false"/> if telemetry shouldn't include raw inputs and outputs.
    /// The default value is <see langword="false"/>, unless the <c>OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT</c>
    /// environment variable is set to "true" (case-insensitive).
    /// </value>
    /// <remarks>
    /// By default, telemetry includes metadata, such as token counts, but not raw inputs
    /// and outputs, such as message content, function call arguments, and function call results.
    /// The default value can be overridden by setting the <c>OTEL_INSTRUMENTATION_GENAI_CAPTURE_MESSAGE_CONTENT</c>
    /// environment variable to "true". Explicitly setting this property will override the environment variable.
    /// </remarks>
    public bool EnableSensitiveTelemetryData { get; set; } = TelemetryHelpers.EnableSensitiveDataDefault;
 
    internal void ParseConnectionString(string? connectionString)
    {
        var connectionBuilder = new DbConnectionStringBuilder
        {
            ConnectionString = connectionString
        };
 
        if (connectionBuilder.ContainsKey(ConnectionStringEndpoint) && Uri.TryCreate(connectionBuilder[ConnectionStringEndpoint].ToString(), UriKind.Absolute, out var serviceUri))
        {
            Endpoint = serviceUri;
        }
 
        if (connectionBuilder.ContainsKey(ConnectionStringKey))
        {
            Key = connectionBuilder[ConnectionStringKey].ToString();
        }
    }
}