// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Collections.Immutable;
using System.Diagnostics;
using Microsoft.CodeAnalysis.Diagnostics.Telemetry;

namespace Microsoft.CodeAnalysis.Workspaces.Diagnostics;

/// <summary>
/// Basically typed tuple.
/// </summary>
internal static class DiagnosticAnalysisResultMap
{
    public static DiagnosticAnalysisResultMap<TKey, TValue> Create<TKey, TValue>(
        ImmutableDictionary<TKey, TValue> analysisResult,
        ImmutableDictionary<TKey, AnalyzerTelemetryInfo> telemetryInfo)
        where TKey : notnull
    {
        return new DiagnosticAnalysisResultMap<TKey, TValue>(analysisResult, telemetryInfo);
    }
}

internal readonly struct DiagnosticAnalysisResultMap<TKey, TValue>
    where TKey : notnull
{
    public static readonly DiagnosticAnalysisResultMap<TKey, TValue> Empty = new(
        ImmutableDictionary<TKey, TValue>.Empty,
        ImmutableDictionary<TKey, AnalyzerTelemetryInfo>.Empty);

    public readonly ImmutableDictionary<TKey, TValue> AnalysisResult;
    public readonly ImmutableDictionary<TKey, AnalyzerTelemetryInfo> TelemetryInfo;

    public DiagnosticAnalysisResultMap(
        ImmutableDictionary<TKey, TValue> analysisResult,
        ImmutableDictionary<TKey, AnalyzerTelemetryInfo> telemetryInfo)
    {
        Debug.Assert(telemetryInfo.IsEmpty || telemetryInfo.Count == analysisResult.Count);

        AnalysisResult = analysisResult;
        TelemetryInfo = telemetryInfo;
    }
}