Implement media storage and processing features: update configuration in .env.example and appsettings files, enhance Docker setup for media storage, and add media-related services and database entities. Include ffmpeg for media handling and adjust Kestrel settings for large file uploads.

backend/src/TeleWave.Infrastructure/Persistence/AppDbContext.cs

@@ -2,6 +2,7 @@ using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using TeleWave.Application.Common.Interfaces;
 using TeleWave.Domain.Auth;
+using TeleWave.Domain.Media;
 using TeleWave.Infrastructure.Identity;
 
 namespace TeleWave.Infrastructure.Persistence;
@@ -15,6 +16,7 @@ public class AppDbContext(DbContextOptions<AppDbContext> options)
         IAppDbContext
 {
     public DbSet<RefreshToken> RefreshTokens => Set<RefreshToken>();
+    public DbSet<MediaAsset> MediaAssets => Set<MediaAsset>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {

backend/src/TeleWave.Infrastructure/Persistence/Configurations/MediaAssetConfiguration.cs

@@ -0,0 +1,21 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using TeleWave.Domain.Media;
+
+namespace TeleWave.Infrastructure.Persistence.Configurations;
+
+public class MediaAssetConfiguration : IEntityTypeConfiguration<MediaAsset>
+{
+    public void Configure(EntityTypeBuilder<MediaAsset> builder)
+    {
+        builder.Property(x => x.OriginalFileName).IsRequired().HasMaxLength(512);
+        builder.Property(x => x.OriginalExtension).IsRequired().HasMaxLength(16);
+        builder.Property(x => x.VideoCodec).HasMaxLength(32);
+        builder.Property(x => x.AudioCodec).HasMaxLength(32);
+        builder.Property(x => x.RelativePath).HasMaxLength(256);
+        builder.Property(x => x.ErrorMessage).HasMaxLength(2048);
+
+        builder.HasIndex(x => x.Status);
+        builder.HasIndex(x => x.CreatedAt);
+    }
+}