313 lines
12 KiB
C#
313 lines
12 KiB
C#
using System.Linq.Expressions;
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using DysonNetwork.Sphere.Permission;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.EntityFrameworkCore.Design;
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using NodaTime;
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using Npgsql;
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using Quartz;
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namespace DysonNetwork.Sphere;
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public abstract class ModelBase
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{
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public Instant CreatedAt { get; set; }
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public Instant UpdatedAt { get; set; }
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public Instant? DeletedAt { get; set; }
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}
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public class AppDatabase(
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DbContextOptions<AppDatabase> options,
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IConfiguration configuration
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) : DbContext(options)
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{
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public DbSet<PermissionNode> PermissionNodes { get; set; }
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public DbSet<PermissionGroup> PermissionGroups { get; set; }
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public DbSet<PermissionGroupMember> PermissionGroupMembers { get; set; }
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public DbSet<Account.MagicSpell> MagicSpells { get; set; }
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public DbSet<Account.Account> Accounts { get; set; }
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public DbSet<Account.Profile> AccountProfiles { get; set; }
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public DbSet<Account.AccountContact> AccountContacts { get; set; }
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public DbSet<Account.AccountAuthFactor> AccountAuthFactors { get; set; }
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public DbSet<Account.Relationship> AccountRelationships { get; set; }
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public DbSet<Account.Notification> Notifications { get; set; }
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public DbSet<Account.NotificationPushSubscription> NotificationPushSubscriptions { get; set; }
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public DbSet<Auth.Session> AuthSessions { get; set; }
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public DbSet<Auth.Challenge> AuthChallenges { get; set; }
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public DbSet<Storage.CloudFile> Files { get; set; }
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public DbSet<Activity.Activity> Activities { get; set; }
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public DbSet<Post.Publisher> Publishers { get; set; }
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public DbSet<Post.PublisherMember> PublisherMembers { get; set; }
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public DbSet<Post.Post> Posts { get; set; }
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public DbSet<Post.PostReaction> PostReactions { get; set; }
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public DbSet<Post.PostTag> PostTags { get; set; }
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public DbSet<Post.PostCategory> PostCategories { get; set; }
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public DbSet<Post.PostCollection> PostCollections { get; set; }
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public DbSet<Realm.Realm> Realms { get; set; }
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public DbSet<Realm.RealmMember> RealmMembers { get; set; }
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public DbSet<Chat.ChatRoom> ChatRooms { get; set; }
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public DbSet<Chat.ChatMember> ChatMembers { get; set; }
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public DbSet<Chat.Message> ChatMessages { get; set; }
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public DbSet<Chat.MessageStatus> ChatStatuses { get; set; }
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protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
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{
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var dataSourceBuilder = new NpgsqlDataSourceBuilder(configuration.GetConnectionString("App"));
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dataSourceBuilder.EnableDynamicJson();
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dataSourceBuilder.UseNodaTime();
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var dataSource = dataSourceBuilder.Build();
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optionsBuilder.UseNpgsql(
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dataSource,
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opt => opt.UseNodaTime()
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).UseSnakeCaseNamingConvention();
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optionsBuilder.UseAsyncSeeding(async (context, _, cancellationToken) =>
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{
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var defaultPermissionGroup = await context.Set<PermissionGroup>()
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.FirstOrDefaultAsync(g => g.Key == "default", cancellationToken);
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if (defaultPermissionGroup is null)
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{
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context.Set<PermissionGroup>().Add(new PermissionGroup
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{
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Key = "default",
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Nodes =
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{
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PermissionService.NewPermissionNode("group:default", "global", "posts.create", true),
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PermissionService.NewPermissionNode("group:default", "global", "publishers.create", true),
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PermissionService.NewPermissionNode("group:default", "global", "files.create", true),
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PermissionService.NewPermissionNode("group:default", "global", "chat.create", true)
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}
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});
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await context.SaveChangesAsync(cancellationToken);
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}
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});
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base.OnConfiguring(optionsBuilder);
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}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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base.OnModelCreating(modelBuilder);
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modelBuilder.Entity<PermissionGroupMember>()
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.HasKey(pg => new { pg.GroupId, pg.Actor });
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modelBuilder.Entity<PermissionGroupMember>()
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.HasOne(pg => pg.Group)
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.WithMany(g => g.Members)
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.HasForeignKey(pg => pg.GroupId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Account.Account>()
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.HasOne(a => a.Profile)
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.WithOne(p => p.Account)
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.HasForeignKey<Account.Profile>(p => p.Id);
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modelBuilder.Entity<Account.Relationship>()
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.HasKey(r => new { FromAccountId = r.AccountId, ToAccountId = r.RelatedId });
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modelBuilder.Entity<Account.Relationship>()
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.HasOne(r => r.Account)
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.WithMany(a => a.OutgoingRelationships)
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.HasForeignKey(r => r.AccountId);
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modelBuilder.Entity<Account.Relationship>()
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.HasOne(r => r.Related)
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.WithMany(a => a.IncomingRelationships)
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.HasForeignKey(r => r.RelatedId);
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modelBuilder.Entity<Post.PublisherMember>()
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.HasKey(pm => new { pm.PublisherId, pm.AccountId });
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modelBuilder.Entity<Post.PublisherMember>()
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.HasOne(pm => pm.Publisher)
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.WithMany(p => p.Members)
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.HasForeignKey(pm => pm.PublisherId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Post.PublisherMember>()
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.HasOne(pm => pm.Account)
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.WithMany()
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.HasForeignKey(pm => pm.AccountId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Post.Post>()
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.HasIndex(p => p.SearchVector)
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.HasMethod("GIN");
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modelBuilder.Entity<Post.Post>()
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.HasOne(p => p.ThreadedPost)
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.WithOne()
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.HasForeignKey<Post.Post>(p => p.ThreadedPostId);
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modelBuilder.Entity<Post.Post>()
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.HasOne(p => p.RepliedPost)
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.WithMany()
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.HasForeignKey(p => p.RepliedPostId)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<Post.Post>()
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.HasOne(p => p.ForwardedPost)
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.WithMany()
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.HasForeignKey(p => p.ForwardedPostId)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<Post.Post>()
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.HasMany(p => p.Tags)
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.WithMany(t => t.Posts)
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.UsingEntity(j => j.ToTable("post_tag_links"));
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modelBuilder.Entity<Post.Post>()
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.HasMany(p => p.Categories)
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.WithMany(c => c.Posts)
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.UsingEntity(j => j.ToTable("post_category_links"));
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modelBuilder.Entity<Post.Post>()
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.HasMany(p => p.Collections)
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.WithMany(c => c.Posts)
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.UsingEntity(j => j.ToTable("post_collection_links"));
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modelBuilder.Entity<Realm.RealmMember>()
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.HasKey(pm => new { pm.RealmId, pm.AccountId });
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modelBuilder.Entity<Realm.RealmMember>()
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.HasOne(pm => pm.Realm)
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.WithMany(p => p.Members)
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.HasForeignKey(pm => pm.RealmId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Realm.RealmMember>()
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.HasOne(pm => pm.Account)
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.WithMany()
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.HasForeignKey(pm => pm.AccountId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Chat.ChatMember>()
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.HasKey(pm => new { pm.Id });
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modelBuilder.Entity<Chat.ChatMember>()
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.HasAlternateKey(pm => new { pm.ChatRoomId, pm.AccountId });
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modelBuilder.Entity<Chat.ChatMember>()
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.HasOne(pm => pm.ChatRoom)
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.WithMany(p => p.Members)
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.HasForeignKey(pm => pm.ChatRoomId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Chat.ChatMember>()
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.HasOne(pm => pm.Account)
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.WithMany()
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.HasForeignKey(pm => pm.AccountId)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<Chat.MessageStatus>()
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.HasKey(e => new { e.MessageId, e.SenderId });
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modelBuilder.Entity<Chat.Message>()
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.HasOne(m => m.ForwardedMessage)
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.WithMany()
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.HasForeignKey(m => m.ForwardedMessageId)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<Chat.Message>()
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.HasOne(m => m.RepliedMessage)
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.WithMany()
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.HasForeignKey(m => m.RepliedMessageId)
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.OnDelete(DeleteBehavior.Restrict);
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// Automatically apply soft-delete filter to all entities inheriting BaseModel
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foreach (var entityType in modelBuilder.Model.GetEntityTypes())
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{
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if (!typeof(ModelBase).IsAssignableFrom(entityType.ClrType)) continue;
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var method = typeof(AppDatabase)
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.GetMethod(nameof(SetSoftDeleteFilter),
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System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static)!
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.MakeGenericMethod(entityType.ClrType);
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method.Invoke(null, [modelBuilder]);
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}
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}
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private static void SetSoftDeleteFilter<TEntity>(ModelBuilder modelBuilder)
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where TEntity : ModelBase
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{
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modelBuilder.Entity<TEntity>().HasQueryFilter(e => e.DeletedAt == null);
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}
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public override async Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
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{
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var now = SystemClock.Instance.GetCurrentInstant();
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foreach (var entry in ChangeTracker.Entries<ModelBase>())
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{
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switch (entry.State)
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{
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case EntityState.Added:
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entry.Entity.CreatedAt = now;
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entry.Entity.UpdatedAt = now;
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break;
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case EntityState.Modified:
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entry.Entity.UpdatedAt = now;
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break;
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case EntityState.Deleted:
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entry.State = EntityState.Modified;
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entry.Entity.DeletedAt = now;
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break;
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case EntityState.Detached:
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case EntityState.Unchanged:
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default:
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break;
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}
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}
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return await base.SaveChangesAsync(cancellationToken);
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}
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}
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public class AppDatabaseRecyclingJob(AppDatabase db, ILogger<AppDatabaseRecyclingJob> logger) : IJob
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{
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public async Task Execute(IJobExecutionContext context)
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{
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logger.LogInformation("Deleting soft-deleted records...");
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var now = SystemClock.Instance.GetCurrentInstant();
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var threshold = now - Duration.FromDays(7);
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var entityTypes = db.Model.GetEntityTypes()
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.Where(t => typeof(ModelBase).IsAssignableFrom(t.ClrType) && t.ClrType != typeof(ModelBase))
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.Select(t => t.ClrType);
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foreach (var entityType in entityTypes)
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{
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var set = (IQueryable)db.GetType().GetMethod(nameof(DbContext.Set), Type.EmptyTypes)!
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.MakeGenericMethod(entityType).Invoke(db, null)!;
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var parameter = Expression.Parameter(entityType, "e");
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var property = Expression.Property(parameter, nameof(ModelBase.DeletedAt));
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var condition = Expression.LessThan(property, Expression.Constant(threshold, typeof(Instant?)));
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var notNull = Expression.NotEqual(property, Expression.Constant(null, typeof(Instant?)));
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var finalCondition = Expression.AndAlso(notNull, condition);
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var lambda = Expression.Lambda(finalCondition, parameter);
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var queryable = set.Provider.CreateQuery(
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Expression.Call(
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typeof(Queryable),
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"Where",
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[entityType],
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set.Expression,
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Expression.Quote(lambda)
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)
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);
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var toListAsync = typeof(EntityFrameworkQueryableExtensions)
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.GetMethod(nameof(EntityFrameworkQueryableExtensions.ToListAsync))!
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.MakeGenericMethod(entityType);
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var items = await (dynamic)toListAsync.Invoke(null, [queryable, CancellationToken.None])!;
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db.RemoveRange(items);
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}
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await db.SaveChangesAsync();
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}
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}
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public class AppDatabaseFactory : IDesignTimeDbContextFactory<AppDatabase>
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{
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public AppDatabase CreateDbContext(string[] args)
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{
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var configuration = new ConfigurationBuilder()
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.SetBasePath(Directory.GetCurrentDirectory())
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.AddJsonFile("appsettings.json")
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.Build();
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var optionsBuilder = new DbContextOptionsBuilder<AppDatabase>();
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return new AppDatabase(optionsBuilder.Options, configuration);
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}
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} |