Add admin database download

RpgRoller.Tests/Api/CampaignApiTests.cs

@@ -1,3 +1,5 @@
+using System.Text;
+
 namespace RpgRoller.Tests;
 
 public sealed class CampaignApiTests : ApiTestBase
@@ -160,6 +162,40 @@ public sealed class CampaignApiTests : ApiTestBase
         Assert.Contains(usersAfterDelete, user => user.Id == gm.Id);
     }
 
+    [Fact]
+    public async Task AdminDatabaseDownload_RequiresAdminAndReturnsSqliteFile()
+    {
+        using var factory = CreateFactory();
+        using var anonymousClient = factory.CreateClient(new() { AllowAutoRedirect = false });
+        using var adminClient = factory.CreateClient(new() { AllowAutoRedirect = false });
+        using var memberClient = factory.CreateClient(new() { AllowAutoRedirect = false });
+
+        await RegisterAsync(adminClient, "admin-download", "Password123", "Admin Download");
+        await LoginAsync(adminClient, "admin-download", "Password123");
+
+        await RegisterAsync(memberClient, "member-download", "Password123", "Member Download");
+        await LoginAsync(memberClient, "member-download", "Password123");
+
+        var unauthorized = await anonymousClient.GetAsync("/api/admin/database");
+        Assert.Equal(HttpStatusCode.Unauthorized, unauthorized.StatusCode);
+
+        var forbidden = await memberClient.GetAsync("/api/admin/database");
+        Assert.Equal(HttpStatusCode.BadRequest, forbidden.StatusCode);
+
+        var response = await adminClient.GetAsync("/api/admin/database");
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+        Assert.Equal("application/octet-stream", response.Content.Headers.ContentType?.MediaType);
+
+        var disposition = response.Content.Headers.ContentDisposition;
+        Assert.NotNull(disposition);
+        Assert.Equal("attachment", disposition.DispositionType);
+        Assert.EndsWith(".db", disposition.FileName?.Trim('"'), StringComparison.OrdinalIgnoreCase);
+
+        var bytes = await response.Content.ReadAsByteArrayAsync();
+        Assert.True(bytes.Length >= 16);
+        Assert.Equal("SQLite format 3\0", Encoding.ASCII.GetString(bytes, 0, 16));
+    }
+
     [Fact]
     public async Task CampaignOptionsEndpoint_ReturnsCampaignsBeyondVisibleCampaignList()
     {

RpgRoller.Tests/HostingCoverageTests.cs

@@ -23,6 +23,23 @@ public sealed class HostingCoverageTests
         Assert.Contains(services, d => d.ServiceType == typeof(IDiceRoller));
     }
 
+    [Fact]
+    public void AddRpgRollerCore_WithFileConnectionString_RegistersResolvedSqliteDatabaseFile()
+    {
+        var services = new ServiceCollection();
+        var contentRoot = Path.Combine(Path.GetTempPath(), $"rpgroller-hosting-{Guid.NewGuid():N}");
+        var configuration = new ConfigurationBuilder().AddInMemoryCollection(new Dictionary<string, string?> { ["ConnectionStrings:RpgRoller"] = "Data Source=App_Data/rpgroller.db" }).Build();
+        var environment = new TestWebHostEnvironment { ContentRootPath = contentRoot };
+
+        services.AddRpgRollerCore(configuration, environment);
+
+        using var provider = services.BuildServiceProvider();
+        var databaseFile = provider.GetRequiredService<SqliteDatabaseFile>();
+
+        Assert.Equal(Path.Combine(contentRoot, "App_Data", "rpgroller.db"), databaseFile.Path);
+        Assert.True(Directory.Exists(Path.Combine(contentRoot, "App_Data")));
+    }
+
     [Fact]
     public void SqliteSchemaUpgrader_MigratesLegacySchema()
     {

RpgRoller.Tests/Support/ApiTestBase.cs

@@ -2,6 +2,7 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using RpgRoller.Data;
+using RpgRoller.Hosting;
 
 namespace RpgRoller.Tests;
 
@@ -38,8 +39,10 @@ public abstract class ApiTestBase : IClassFixture<WebApplicationFactory<Program>
             services.RemoveAll<DbContextOptions<RpgRollerDbContext>>();
             services.RemoveAll<IDbContextFactory<RpgRollerDbContext>>();
             services.RemoveAll<RpgRollerDbContext>();
+            services.RemoveAll<SqliteDatabaseFile>();
 
             var dbPath = Path.Combine(Path.GetTempPath(), $"rpgroller-tests-{Guid.NewGuid():N}.db");
+            services.AddSingleton(new SqliteDatabaseFile(dbPath));
             services.AddDbContextFactory<RpgRollerDbContext>(options => options.UseSqlite($"Data Source={dbPath}"));
         }));
     }
@@ -83,4 +86,4 @@ public abstract class ApiTestBase : IClassFixture<WebApplicationFactory<Program>
     }
 
     private readonly WebApplicationFactory<Program> m_BaseFactory;
-}
+}