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| author | crupest <crupest@outlook.com> | 2021-04-23 17:28:18 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2021-04-23 17:37:37 +0800 |
| commit | 5b9f8cfb458bdefaa82c326e03ded7a678034346 (patch) | |
| tree | 803b5aba53bdffd5dc72f8e186a79b7abf2a239e /BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs | |
| parent | ffdc747c5b2cefff117f4da049386ba9f30bd792 (diff) | |
| download | timeline-5b9f8cfb458bdefaa82c326e03ded7a678034346.tar.gz timeline-5b9f8cfb458bdefaa82c326e03ded7a678034346.tar.bz2 timeline-5b9f8cfb458bdefaa82c326e03ded7a678034346.zip | |
refactor: Refactor a lot.
Diffstat (limited to 'BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs')
| -rw-r--r-- | BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs b/BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs new file mode 100644 index 00000000..605223f3 --- /dev/null +++ b/BackEnd/Timeline/Services/DatabaseManagement/TimelinePostContentToDataMigration.cs @@ -0,0 +1,70 @@ +using Microsoft.EntityFrameworkCore;
+using SixLabors.ImageSharp;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using Timeline.Entities;
+using Timeline.Models;
+
+namespace Timeline.Services.DatabaseManagement
+{
+ public class TimelinePostContentToDataMigration : IDatabaseCustomMigration
+ {
+ private readonly IDataManager _dataManager;
+
+ public TimelinePostContentToDataMigration(IDataManager dataManager)
+ {
+ _dataManager = dataManager;
+ }
+
+ public string GetName() => "TimelinePostContentToData";
+
+ public async Task ExecuteAsync(DatabaseContext database, CancellationToken cancellationToken)
+ {
+#pragma warning disable CS0618
+ var postEntities = await database.TimelinePosts.ToListAsync(cancellationToken);
+
+ foreach (var postEntity in postEntities)
+ {
+ if (postEntity.Content is null)
+ {
+ postEntity.Deleted = true;
+ }
+ else
+ {
+ if (postEntity.ContentType == "text")
+ {
+ var tag = await _dataManager.RetainEntry(Encoding.UTF8.GetBytes(postEntity.Content));
+ database.TimelinePostData.Add(new TimelinePostDataEntity
+ {
+ DataTag = tag,
+ Kind = MimeTypes.TextPlain,
+ Index = 0,
+ PostId = postEntity.Id,
+ LastUpdated = postEntity.LastUpdated
+ });
+ }
+ else
+ {
+ var data = await _dataManager.GetEntryAndCheck(postEntity.Content, "Old image content does not have corresponding data with the tag.");
+ var format = Image.DetectFormat(data);
+ database.TimelinePostData.Add(new TimelinePostDataEntity
+ {
+ DataTag = postEntity.Content,
+ Kind = format.DefaultMimeType,
+ Index = 0,
+ PostId = postEntity.Id,
+ LastUpdated = postEntity.LastUpdated
+ });
+ }
+ }
+ postEntity.Content = null;
+ postEntity.ContentType = null;
+ postEntity.ExtraContent = null;
+ }
+
+ await database.SaveChangesAsync(cancellationToken);
+#pragma warning restore CS0618
+ }
+ }
+}
|