add optional EXPORT_USER_DATA_URL to extract user data

KratosSelfService/Controllers/ProfileController.cs

@@ -1,3 +1,4 @@
+using KratosSelfService.Extensions;
 using KratosSelfService.Models;
 using KratosSelfService.Services;
 using Microsoft.AspNetCore.Authorization;
@@ -6,8 +7,11 @@
 
 namespace KratosSelfService.Controllers;
 
-public class ProfileController(IdentitySchemaService schemaService) : Controller
+public class ProfileController(
+    IdentitySchemaService schemaService, EnvService envService, ILogger logger) : Controller
 {
+    private HttpClient _httpClient = new();
+
     [HttpGet("")]
     public async Task<IActionResult> Profile()
     {
@@ -16,4 +20,20 @@ public async Task<IActionResult> Profile()
             session.Identity.SchemaUrl);
         return View("Profile", new ProfileModel(session, IdentitySchemaService.GetTraits(schema)));
     }
+
+    [HttpGet("export-data")]
+    public async Task<IActionResult> ExportData(CancellationToken cancellationToken)
+    {
+        var session = HttpContext.GetSession()!;
+        if (string.IsNullOrWhiteSpace(envService.ExportUserDataUrl))
+        {
+            logger.LogDebug("Called disabled export-data endpoint, return 404.");
+            return NotFound();
+        }
+        var url = envService.ExportUserDataUrl.Replace("{Id}", session.Identity.Id);
+        var stream = await _httpClient.GetStreamAsync(url, cancellationToken:cancellationToken);
+        var timestamp = DateTime.Now.ToString("yyyyMMddHHmmss");
+        return File(stream, "APPLICATION/octet-stream",
+            $"user-export-{timestamp}.zip");
+    }
 }

KratosSelfService/Services/EnvService.cs

@@ -58,6 +58,14 @@ public class EnvService
     /// <summary>
     ///     The optional logo URI for the website
     /// </summary>
-    public readonly string? WebsiteTitle =
+    public readonly string WebsiteTitle =
         Environment.GetEnvironmentVariable("WEBSITE_TITLE") ?? "OryUI";
+
+    /// <summary>
+    ///     Optional internal URL to collect and bundle all user data.
+    ///     Setting this allows the user to download its user data.
+    ///     {Id} will get replaced by the uuid of the user.
+    /// </summary>
+    public readonly string? ExportUserDataUrl =
+        Environment.GetEnvironmentVariable("EXPORT_USER_DATA_URL");
 }

KratosSelfService/Startup.cs

@@ -11,6 +11,7 @@ public class Startup(IConfigurationRoot config, IWebHostEnvironment env)
 {
     public void ConfigureServices(IServiceCollection services)
     {
+        services.AddSingleton(typeof(ILogger), provider => provider.GetRequiredService<ILogger<Program>>());
         services.AddControllersWithViews();
 
         // authentication and authorisation

OryAdmin/Startup.cs

@@ -9,6 +9,7 @@ public class Startup(IConfigurationRoot config, IWebHostEnvironment env)
 {
     public void ConfigureServices(IServiceCollection services)
     {
+        services.AddSingleton(typeof(ILogger), provider => provider.GetRequiredService<ILogger<Program>>());
         services.AddHttpContextAccessor();
         services.AddRazorComponents()
             .AddInteractiveServerComponents();