using System.Threading.Tasks;
using Util.Helpers;
using Xunit;
using Xunit.Abstractions;

namespace Util.Images.Tests; 

/// <summary>
/// 测试图片操作 - 写文本
/// </summary>
public class DrawTextTest {
    /// <summary>
    /// 测试输出
    /// </summary>
    private readonly ITestOutputHelper _testOutputHelper;
    /// <summary>
    /// 图片服务
    /// </summary>
    private readonly IImageManager _imageManager;
    /// <summary>
    /// 输出路径
    /// </summary>
    private const string Path = "./test/{0}.gif";

    /// <summary>
    /// 测试初始化
    /// </summary>
    public DrawTextTest( ITestOutputHelper testOutputHelper, IImageManager imageManager ) {
        _testOutputHelper = testOutputHelper;
        _imageManager = imageManager;
    }

    /// <summary>
    /// 测试 - 内置字体,指定坐标
    /// </summary>
    [Fact]
    public async Task Test_1() {
        await _imageManager.CreateImage( 128, 128, "5d005d" )
            .DefaultFontName( "Microsoft YaHei" )
            .Font( 48 )
            .Text( "U", "fff", 50, 38 )
            .SaveAsync( string.Format( Path, "Test_1" ) );
    }

    /// <summary>
    /// 测试 - 加载字体,居中显示
    /// </summary>
    [Fact]
    public async Task Test_2() {
        ImageManager.LoadFont( "a", Common.GetPhysicalPath( "~/Fonts/STZHONGS.TTF" ) );
        await _imageManager.CreateImage( 128, 128, "5d005d" )
            .Font( 48,"a" )
            .TextCenter( "U", "fff" )
            .SaveAsync( string.Format( Path, "Test_2" ) );
    }

    /// <summary>
    /// 测试获取流
    /// </summary>
    [Fact]
    public async Task TestToStreamAsync() {
        var result = await _imageManager.CreateImage( 128, 128, "5d005d" )
            .ImageType( ImageType.Gif )
            .Font( 48 )
            .TextCenter( "U", "fff" )
            .ToStreamAsync();
        await Util.Helpers.File.WriteAsync( string.Format( Path, "TestToStreamAsync" ),result );
    }

    /// <summary>
    /// 测试获取base64
    /// </summary>
    [Fact]
    public void TestToBase64() {
        var result = _imageManager.CreateImage( 128, 128, "5d005d" )
            .ImageType( ImageType.Gif )
            .Font( 48 )
            .TextCenter( "U", "fff" )
            .ToBase64();
        _testOutputHelper.WriteLine( result );
    }

    /// <summary>
    /// 测试受支持的字体列表
    /// </summary>
    [Fact]
    public void TestGetSupportedFonts() {
        ImageManager.LoadFont( "a", Common.GetPhysicalPath( "~/Fonts/STZHONGS.TTF" ) );
        var result = ImageManager.GetSupportedFonts();
        _testOutputHelper.WriteLine( result.Join() );
    }
}