59 lines
No EOL
2.6 KiB
C#
59 lines
No EOL
2.6 KiB
C#
using Iceshrimp.Backend.Core.Database;
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using Iceshrimp.Backend.Core.Database.Tables;
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using Iceshrimp.Backend.Core.Federation.ActivityPub;
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using Iceshrimp.Backend.Core.Federation.ActivityStreams.Types;
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using Iceshrimp.Backend.Core.Helpers;
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using Iceshrimp.Backend.Core.Middleware;
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using Microsoft.EntityFrameworkCore;
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namespace Iceshrimp.Backend.Core.Services;
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public class NoteService(ILogger<NoteService> logger, DatabaseContext db, UserResolver userResolver) {
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public async Task CreateNote(ASNote note, ASActor actor) {
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if (await db.Notes.AnyAsync(p => p.Uri == note.Id)) {
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logger.LogDebug("Note '{id}' already exists, skipping", note.Id);
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return;
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}
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logger.LogDebug("Creating note: {id}", note.Id);
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var user = await userResolver.Resolve(actor.Id);
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logger.LogDebug("Resolved user to {userId}", user.Id);
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// Validate note
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if (note.AttributedTo is not { Count: 1 } || note.AttributedTo[0].Id != user.Uri)
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throw GracefulException.UnprocessableEntity("User.Uri doesn't match Note.AttributedTo");
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if (user.Uri == null)
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throw GracefulException.UnprocessableEntity("User.Uri is null");
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if (new Uri(note.Id).IdnHost != new Uri(user.Uri).IdnHost)
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throw GracefulException.UnprocessableEntity("User.Uri host doesn't match Note.Id host");
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if (!note.Id.StartsWith("https://"))
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throw GracefulException.UnprocessableEntity("Note.Id schema is invalid");
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if (note.Url?.Link != null && !note.Url.Link.StartsWith("https://"))
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throw GracefulException.UnprocessableEntity("Note.Url schema is invalid");
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if (note.PublishedAt is null or { Year: < 2007 } || note.PublishedAt > DateTime.Now + TimeSpan.FromDays(3))
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throw GracefulException.UnprocessableEntity("Note.PublishedAt is nonsensical");
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if (user.IsSuspended)
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throw GracefulException.Forbidden("User is suspended");
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//TODO: validate AP object type
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//TODO: parse note visibility
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//TODO: resolve anything related to the note as well (reply thread, attachments, emoji, etc)
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var dbNote = new Note {
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Id = IdHelpers.GenerateSlowflakeId(),
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Uri = note.Id,
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Url = note.Url?.Id, //FIXME: this doesn't seem to work yet
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Text = note.MkContent ?? await MfmHelpers.FromHtml(note.Content),
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UserId = user.Id,
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CreatedAt = note.PublishedAt?.ToUniversalTime() ??
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throw GracefulException.UnprocessableEntity("Missing or invalid PublishedAt field"),
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UserHost = user.Host,
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Visibility = Note.NoteVisibility.Public //TODO: parse to & cc fields
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};
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await db.Notes.AddAsync(dbNote);
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await db.SaveChangesAsync();
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logger.LogDebug("Note {id} created successfully", dbNote.Id);
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}
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} |