// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using System.Collections.Generic;
using System.Text.Json;
using Xunit;
 
namespace Microsoft.Extensions.AI;
 
public class ImageGenerationToolResultContentTests
{
    [Fact]
    public void Constructor_PropsDefault()
    {
        ImageGenerationToolResultContent c = new("call123");
        Assert.Null(c.RawRepresentation);
        Assert.Null(c.AdditionalProperties);
        Assert.Equal("call123", c.CallId);
        Assert.Null(c.Outputs);
    }
 
    [Fact]
    public void Properties_Roundtrip()
    {
        ImageGenerationToolResultContent c = new("img123");
 
        Assert.Equal("img123", c.CallId);
 
        Assert.Null(c.Outputs);
        IList<AIContent> outputs = [new DataContent(new byte[] { 1, 2, 3 }, "image/png")];
        c.Outputs = outputs;
        Assert.Same(outputs, c.Outputs);
 
        Assert.Null(c.RawRepresentation);
        object raw = new();
        c.RawRepresentation = raw;
        Assert.Same(raw, c.RawRepresentation);
 
        Assert.Null(c.AdditionalProperties);
        AdditionalPropertiesDictionary props = new() { { "key", "value" } };
        c.AdditionalProperties = props;
        Assert.Same(props, c.AdditionalProperties);
    }
 
    [Fact]
    public void Outputs_SupportsMultipleContentTypes()
    {
        ImageGenerationToolResultContent c = new("img456")
        {
            Outputs =
            [
                new DataContent(new byte[] { 1, 2, 3 }, "image/png"),
                new UriContent("http://example.com/image.jpg", "image/jpeg"),
                new DataContent(new byte[] { 4, 5, 6 }, "image/gif")
            ]
        };
 
        Assert.NotNull(c.Outputs);
        Assert.Equal(3, c.Outputs.Count);
        Assert.IsType<DataContent>(c.Outputs[0]);
        Assert.IsType<UriContent>(c.Outputs[1]);
        Assert.IsType<DataContent>(c.Outputs[2]);
    }
 
    [Fact]
    public void Serialization_Roundtrips()
    {
        ImageGenerationToolResultContent content = new("img123")
        {
            Outputs =
            [
                new DataContent(new byte[] { 1, 2, 3 }, "image/png"),
                new UriContent("http://example.com/image.jpg", "image/jpeg")
            ]
        };
 
        var json = JsonSerializer.Serialize(content, AIJsonUtilities.DefaultOptions);
        var deserializedSut = JsonSerializer.Deserialize<ImageGenerationToolResultContent>(json, AIJsonUtilities.DefaultOptions);
 
        Assert.NotNull(deserializedSut);
        Assert.Equal("img123", deserializedSut.CallId);
        Assert.NotNull(deserializedSut.Outputs);
        Assert.Equal(2, deserializedSut.Outputs.Count);
        Assert.IsType<DataContent>(deserializedSut.Outputs[0]);
        Assert.Equal("image/png", ((DataContent)deserializedSut.Outputs[0]).MediaType);
        Assert.IsType<UriContent>(deserializedSut.Outputs[1]);
        Assert.Equal("http://example.com/image.jpg", ((UriContent)deserializedSut.Outputs[1]).Uri.ToString());
    }
 
    [Fact]
    public void Serialization_PolymorphicAsAIContent_Roundtrips()
    {
        AIContent content = new ImageGenerationToolResultContent("img789")
        {
            Outputs =
            [
                new DataContent(new byte[] { 7, 8, 9 }, "image/png"),
                new UriContent("http://example.com/another.jpg", "image/jpeg")
            ]
        };
 
        var json = JsonSerializer.Serialize(content, AIJsonUtilities.DefaultOptions);
        Assert.Contains("\"$type\"", json);
        Assert.Contains("\"imageGenerationToolResult\"", json);
 
        var deserialized = JsonSerializer.Deserialize<AIContent>(json, AIJsonUtilities.DefaultOptions);
 
        Assert.NotNull(deserialized);
        Assert.IsType<ImageGenerationToolResultContent>(deserialized);
 
        var imageResult = (ImageGenerationToolResultContent)deserialized;
        Assert.Equal("img789", imageResult.CallId);
        Assert.NotNull(imageResult.Outputs);
        Assert.Equal(2, imageResult.Outputs.Count);
        Assert.IsType<DataContent>(imageResult.Outputs[0]);
        Assert.IsType<UriContent>(imageResult.Outputs[1]);
    }
 
    [Fact]
    public void JsonDeserialization_KnownPayload()
    {
        const string Json = """
            {
              "$type": "imageGenerationToolResult",
              "callId": "img-call1",
              "outputs": [
                {
                  "$type": "uri",
                  "uri": "http://example.com/image.png",
                  "mediaType": "image/png"
                }
              ],
              "additionalProperties": {
                "key": "val"
              }
            }
            """;
 
        AIContent? result = JsonSerializer.Deserialize<AIContent>(Json, AIJsonUtilities.DefaultOptions);
 
        Assert.NotNull(result);
        var imgResult = Assert.IsType<ImageGenerationToolResultContent>(result);
        Assert.Equal("img-call1", imgResult.CallId);
        Assert.NotNull(imgResult.Outputs);
        Assert.Single(imgResult.Outputs);
        var uriOutput = Assert.IsType<UriContent>(imgResult.Outputs[0]);
        Assert.Equal(new Uri("http://example.com/image.png"), uriOutput.Uri);
        Assert.Equal("image/png", uriOutput.MediaType);
        Assert.NotNull(imgResult.AdditionalProperties);
        Assert.Equal("val", imgResult.AdditionalProperties["key"]?.ToString());
    }
}