ThumbnailInfoから画像ダウンロード処理を分離

OpenTween.Tests/Thumbnail/Services/ImgAzyobuziNetTest.cs

@@ -117,7 +117,7 @@ public async Task MatchTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.azyobuzi.net/api/redirect?size=large&uri=http%3A%2F%2Fexample.com%2Fabcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]

OpenTween.Tests/Thumbnail/Services/MetaThumbnailServiceTest.cs

@@ -72,7 +72,7 @@ public async Task OGPMetaTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -94,7 +94,7 @@ public async Task TwitterMetaTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -116,7 +116,7 @@ public async Task InvalidMetaTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -138,7 +138,7 @@ public async Task ReverseMetaTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -161,7 +161,7 @@ public async Task BadMetaTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -183,7 +183,7 @@ public async Task BadMetaOneLineTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]
@@ -205,7 +205,7 @@ public async Task ReverseMetaOneLineTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]

OpenTween.Tests/Thumbnail/Services/SimpleThumbnailServiceTest.cs

@@ -46,7 +46,7 @@ public async Task RegexMatchTest()
             Assert.NotNull(thumbinfo);
             Assert.Equal("http://example.com/abcd", thumbinfo!.MediaPageUrl);
             Assert.Equal("http://img.example.com/abcd", thumbinfo.ThumbnailImageUrl);
-            Assert.Null(thumbinfo.TooltipText);
+            Assert.Equal("", thumbinfo.TooltipText);
         }
 
         [Fact]

OpenTween.Tests/Thumbnail/Services/TonTwitterComTest.cs

@@ -119,14 +119,12 @@ public async Task LoadThumbnailImageAsync_Test()
                 .ReturnsAsync(response);
 
             var apiConnection = mock.Object;
-            var thumb = new TonTwitterCom.Thumbnail(apiConnection)
-            {
-                MediaPageUrl = "https://ton.twitter.com/1.1/ton/data/dm/123456/123456/abcdef.jpg:large",
-                FullSizeImageUrl = "https://ton.twitter.com/1.1/ton/data/dm/123456/123456/abcdef.jpg:large",
-                ThumbnailImageUrl = "https://ton.twitter.com/1.1/ton/data/dm/123456/123456/abcdef.jpg",
-            };
+            var thumbLoader = new TonTwitterCom.ThumbnailLoader(
+                apiConnection,
+                new("https://ton.twitter.com/1.1/ton/data/dm/123456/123456/abcdef.jpg")
+            );
 
-            var result = await thumb.LoadThumbnailImageAsync(CancellationToken.None);
+            var result = await thumbLoader.Load(null!, CancellationToken.None);
             Assert.Equal(image, result);
 
             mock.VerifyAll();

OpenTween.Tests/Thumbnail/Services/TumblrTest.cs

@@ -49,12 +49,7 @@ public void ParsePostJson_Test()
 
             var expected = new[]
             {
-                new ThumbnailInfo
-                {
-                    MediaPageUrl = "http://example.com/post/1234567",
-                    ThumbnailImageUrl = "http://example.com/photo/1280/1234567/1/tumblr_hogehoge",
-                    TooltipText = null,
-                },
+                new ThumbnailInfo("http://example.com/post/1234567", "http://example.com/photo/1280/1234567/1/tumblr_hogehoge"),
             };
             Assert.Equal(expected, thumbs);
         }

OpenTween.Tests/TweetThumbnailTest.cs

@@ -51,19 +51,17 @@ private IThumbnailService CreateThumbnailService()
                 .Setup(
                     x => x.GetThumbnailInfoAsync("http://example.com/abcd", It.IsAny<PostClass>(), It.IsAny<CancellationToken>())
                 )
-                .ReturnsAsync(new MockThumbnailInfo
+                .ReturnsAsync(new ThumbnailInfo("http://example.com/abcd", "http://img.example.com/abcd.png")
                 {
-                    MediaPageUrl = "http://example.com/abcd",
-                    ThumbnailImageUrl = "http://img.example.com/abcd.png",
+                    Loader = new FakeThumbnailLoader(),
                 });
             thumbnailServiceMock
                 .Setup(
                     x => x.GetThumbnailInfoAsync("http://example.com/efgh", It.IsAny<PostClass>(), It.IsAny<CancellationToken>())
                 )
-                .ReturnsAsync(new MockThumbnailInfo
+                .ReturnsAsync(new ThumbnailInfo("http://example.com/efgh", "http://img.example.com/efgh.png")
                 {
-                    MediaPageUrl = "http://example.com/efgh",
-                    ThumbnailImageUrl = "http://img.example.com/efgh.png",
+                    Loader = new FakeThumbnailLoader(),
                 });
             return thumbnailServiceMock.Object;
         }
@@ -124,7 +122,10 @@ public async Task PrepareThumbnails_CancelTest()
                 .Returns(async () =>
                 {
                     await Task.Delay(200);
-                    return new MockThumbnailInfo();
+                    return new ThumbnailInfo("http://slow.example.com/abcd", "http://slow.example.com/abcd")
+                    {
+                        Loader = new FakeThumbnailLoader(),
+                    };
                 });
 
             var thumbnailGenerator = this.CreateThumbnailGenerator();
@@ -151,10 +152,10 @@ public async Task PrepareThumbnails_CancelTest()
         public async Task LoadSelectedThumbnail_Test()
         {
             using var image = TestUtils.CreateDummyImage();
-            var thumbnailInfoMock = new Mock<ThumbnailInfo>() { CallBase = true };
-            thumbnailInfoMock
+            var thumbnailLoaderMock = new Mock<IThumbnailLoader>();
+            thumbnailLoaderMock
                 .Setup(
-                    x => x.LoadThumbnailImageAsync(It.IsAny<HttpClient>(), It.IsAny<CancellationToken>())
+                    x => x.Load(It.IsAny<HttpClient>(), It.IsAny<CancellationToken>())
                 )
                 .ReturnsAsync(image);
 
@@ -163,7 +164,10 @@ public async Task LoadSelectedThumbnail_Test()
                 .Setup(
                     x => x.GetThumbnailInfoAsync("http://example.com/abcd", It.IsAny<PostClass>(), It.IsAny<CancellationToken>())
                 )
-                .ReturnsAsync(thumbnailInfoMock.Object);
+                .ReturnsAsync(new ThumbnailInfo("http://example.com/abcd", "http://example.com/abcd")
+                {
+                    Loader = thumbnailLoaderMock.Object,
+                });
 
             var thumbnailGenerator = this.CreateThumbnailGenerator();
             thumbnailGenerator.Services.Add(thumbnailServiceMock.Object);
@@ -187,10 +191,10 @@ public async Task LoadSelectedThumbnail_Test()
         public async Task LoadSelectedThumbnail_RequestCollapsingTest()
         {
             var tsc = new TaskCompletionSource<MemoryImage>();
-            var thumbnailInfoMock = new Mock<ThumbnailInfo>() { CallBase = true };
-            thumbnailInfoMock
+            var thumbnailLoaderMock = new Mock<IThumbnailLoader>();
+            thumbnailLoaderMock
                 .Setup(
-                    x => x.LoadThumbnailImageAsync(It.IsAny<HttpClient>(), It.IsAny<CancellationToken>())
+                    x => x.Load(It.IsAny<HttpClient>(), It.IsAny<CancellationToken>())
                 )
                 .Returns(tsc.Task);
 
@@ -199,7 +203,10 @@ public async Task LoadSelectedThumbnail_RequestCollapsingTest()
                 .Setup(
                     x => x.GetThumbnailInfoAsync("http://example.com/abcd", It.IsAny<PostClass>(), It.IsAny<CancellationToken>())
                 )
-                .ReturnsAsync(thumbnailInfoMock.Object);
+                .ReturnsAsync(new ThumbnailInfo("http://example.com/abcd", "http://example.com/abcd")
+                {
+                    Loader = thumbnailLoaderMock.Object,
+                });
 
             var thumbnailGenerator = this.CreateThumbnailGenerator();
             thumbnailGenerator.Services.Add(thumbnailServiceMock.Object);
@@ -354,9 +361,9 @@ public async Task Scroll_Test()
             Assert.Equal(0, tweetThumbnail.SelectedIndex);
         }
 
-        private class MockThumbnailInfo : ThumbnailInfo
+        private class FakeThumbnailLoader : IThumbnailLoader
         {
-            public override Task<MemoryImage> LoadThumbnailImageAsync(HttpClient http, CancellationToken cancellationToken)
+            public Task<MemoryImage> Load(HttpClient http, CancellationToken cancellationToken)
                 => Task.FromResult(TestUtils.CreateDummyImage());
         }
     }

OpenTween/Thumbnail/IThumbnailLoader.cs

@@ -0,0 +1,34 @@
+// OpenTween - Client of Twitter
+// Copyright (c) 2024 kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
+// All rights reserved.
+//
+// This file is part of OpenTween.
+//
+// This program is free software; you can redistribute it and/or modify it
+// under the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3 of the License, or (at your option)
+// any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program. If not, see <http://www.gnu.org/licenses/>, or write to
+// the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+// Boston, MA 02110-1301, USA.
+
+#nullable enable
+
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace OpenTween.Thumbnail
+{
+    public interface IThumbnailLoader
+    {
+        public Task<MemoryImage> Load(HttpClient http, CancellationToken cancellationToken);
+    }
+}

OpenTween/Thumbnail/MapThumbGoogle.cs

@@ -36,12 +36,10 @@ public class MapThumbGoogle : MapThumb
     {
         public override Task<ThumbnailInfo> GetThumbnailInfoAsync(PostClass.StatusGeo geo)
         {
-            var thumb = new ThumbnailInfo
-            {
-                MediaPageUrl = this.CreateMapLinkUrl(geo.Latitude, geo.Longitude),
-                ThumbnailImageUrl = this.CreateStaticMapUrl(geo.Latitude, geo.Longitude),
-                TooltipText = null,
-            };
+            var mapUrl = this.CreateMapLinkUrl(geo.Latitude, geo.Longitude);
+            var staticImageUrl = this.CreateStaticMapUrl(geo.Latitude, geo.Longitude);
+
+            var thumb = new ThumbnailInfo(mapUrl, staticImageUrl);
 
             return Task.FromResult(thumb);
         }

OpenTween/Thumbnail/MapThumbOSM.cs

@@ -41,12 +41,13 @@ public override Task<ThumbnailInfo> GetThumbnailInfoAsync(PostClass.StatusGeo ge
             var size = new Size(SettingManager.Instance.Common.MapThumbnailWidth, SettingManager.Instance.Common.MapThumbnailHeight);
             var zoom = SettingManager.Instance.Common.MapThumbnailZoom;
 
-            var thumb = new OSMThumbnailInfo(geo.Latitude, geo.Longitude, zoom, size)
+            var mapUrl = this.CreateMapLinkUrl(geo.Latitude, geo.Longitude);
+            var thumb = new ThumbnailInfo(mapUrl, null)
             {
-                MediaPageUrl = this.CreateMapLinkUrl(geo.Latitude, geo.Longitude),
+                Loader = new OSMThumbnailLoader(geo.Latitude, geo.Longitude, zoom, size),
             };
 
-            return Task.FromResult((ThumbnailInfo)thumb);
+            return Task.FromResult(thumb);
         }
 
         public string CreateMapLinkUrl(double latitude, double longitude)
@@ -57,7 +58,7 @@ public string CreateMapLinkUrl(double latitude, double longitude)
         }
     }
 
-    public class OSMThumbnailInfo : ThumbnailInfo
+    public class OSMThumbnailLoader : IThumbnailLoader
     {
         /// <summary>openstreetmap.org タイルサーバー</summary>
         public static readonly string TileServerBase = "https://a.tile.openstreetmap.org";
@@ -77,15 +78,15 @@ public class OSMThumbnailInfo : ThumbnailInfo
         /// <summary>生成するサムネイル画像のサイズ (ピクセル単位)</summary>
         public Size ThumbnailSize { get; }
 
-        public OSMThumbnailInfo(double latitude, double longitude, int zoom, Size thumbSize)
+        public OSMThumbnailLoader(double latitude, double longitude, int zoom, Size thumbSize)
         {
             this.Latitude = latitude;
             this.Longitude = longitude;
             this.Zoom = zoom;
             this.ThumbnailSize = thumbSize;
         }
 
-        public override async Task<MemoryImage> LoadThumbnailImageAsync(HttpClient http, CancellationToken cancellationToken)
+        public async Task<MemoryImage> Load(HttpClient http, CancellationToken cancellationToken)
         {
             // 画像中央に描画されるタイル (ピクセル単位ではなくタイル番号を表す)
             // タイル番号に小数部が含まれているが、これはタイル内の相対的な位置を表すためこのまま保持する

OpenTween/Thumbnail/Services/ImgAzyobuziNet.cs

@@ -215,12 +215,9 @@ protected virtual async Task<byte[]> FetchRegexAsync(string apiBase)
                     {
                         if (regex.IsMatch(url))
                         {
-                            return new ThumbnailInfo
+                            return new ThumbnailInfo(url, this.apiBase + "redirect?size=large&uri=" + Uri.EscapeDataString(url))
                             {
-                                MediaPageUrl = url,
-                                ThumbnailImageUrl = this.apiBase + "redirect?size=large&uri=" + Uri.EscapeDataString(url),
                                 FullSizeImageUrl = this.apiBase + "redirect?size=full&uri=" + Uri.EscapeDataString(url),
-                                TooltipText = null,
                             };
                         }
                     }

OpenTween/Thumbnail/Services/MetaThumbnailService.cs

@@ -91,12 +91,7 @@ public MetaThumbnailService(HttpClient? http, string urlPattern, string[]? propN
                 var thumbnailUrl = this.GetThumbnailUrl(content);
                 if (MyCommon.IsNullOrEmpty(thumbnailUrl)) return null;
 
-                return new ThumbnailInfo
-                {
-                    MediaPageUrl = url,
-                    ThumbnailImageUrl = thumbnailUrl,
-                    TooltipText = null,
-                };
+                return new ThumbnailInfo(url, thumbnailUrl);
             }
             catch (HttpRequestException)
             {

OpenTween/Thumbnail/Services/Nicovideo.cs

@@ -72,10 +72,8 @@ public class Nicovideo : IThumbnailService
                 if (thumbUrlElement == null)
                     return null;
 
-                return new ThumbnailInfo
+                return new ThumbnailInfo(url, thumbUrlElement.Value)
                 {
-                    MediaPageUrl = url,
-                    ThumbnailImageUrl = thumbUrlElement.Value,
                     TooltipText = BuildTooltip(thumbElement),
                     IsPlayable = true,
                 };

OpenTween/Thumbnail/Services/PbsTwimgCom.cs

@@ -71,11 +71,9 @@ public class PbsTwimgCom : IThumbnailService
             var media = post.Media.FirstOrDefault(x => x.Url == url);
             var altText = media?.AltText;
 
-            var thumb = new ThumbnailInfo
+            var thumb = new ThumbnailInfo(mediaOrig, mediaLarge)
             {
-                MediaPageUrl = mediaOrig,
-                ThumbnailImageUrl = mediaLarge,
-                TooltipText = altText,
+                TooltipText = altText ?? "",
                 FullSizeImageUrl = mediaOrig,
             };