add basic logging ui (#14)

ErsatzTV.Infrastructure/Data/Configurations/LogEntryConfiguration.cs

@@ -0,0 +1,12 @@
+using ErsatzTV.Core.Domain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace ErsatzTV.Infrastructure.Data.Configurations
+{
+    public class LogEntryConfiguration : IEntityTypeConfiguration<LogEntry>
+    {
+        public void Configure(EntityTypeBuilder<LogEntry> builder) =>
+            builder.ToTable("Logs");
+    }
+}

ErsatzTV.Infrastructure/Data/LogContext.cs

@@ -0,0 +1,21 @@
+using ErsatzTV.Core.Domain;
+using Microsoft.EntityFrameworkCore;
+
+namespace ErsatzTV.Infrastructure.Data
+{
+    public class LogContext : DbContext
+    {
+        public LogContext(DbContextOptions<LogContext> options)
+            : base(options)
+        {
+        }
+
+        public DbSet<LogEntry> LogEntries { get; set; }
+
+        protected override void OnModelCreating(ModelBuilder builder)
+        {
+            base.OnModelCreating(builder);
+            builder.ApplyConfigurationsFromAssembly(typeof(LogContext).Assembly);
+        }
+    }
+}

ErsatzTV.Infrastructure/Data/Repositories/LogRepository.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using Microsoft.EntityFrameworkCore;
+
+namespace ErsatzTV.Infrastructure.Data.Repositories
+{
+    public class LogRepository : ILogRepository
+    {
+        private readonly LogContext _logContext;
+
+        public LogRepository(LogContext logContext) => _logContext = logContext;
+
+        public Task<List<LogEntry>> GetRecentLogEntries() =>
+            _logContext.LogEntries.OrderByDescending(e => e.Id).Take(100).ToListAsync();
+    }
+}