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nexus/backend/Extensions/ApplicationBuilderExtensions.cs
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refactor: extract DI, helpers from Program.cs into extension classes
2026-06-16 16:52:17 +02:00

84 lines
3.1 KiB
C#

using Microsoft.EntityFrameworkCore;
using Nexus.Api.Data;
using Nexus.Api.Helpers;
using Nexus.Api.Middleware;
using Nexus.Api.Services;
namespace Nexus.Api.Extensions;
/// <summary>
/// Extension methods for configuring the Nexus application pipeline and startup.
/// </summary>
public static class ApplicationBuilderExtensions
{
/// <summary>
/// Applies pending EF Core migrations and seeds the initial owner account if none exist.
/// </summary>
public static async Task EnsureDatabaseAsync(this WebApplication app)
{
var configuration = app.Configuration;
await using (var scope = app.Services.CreateAsyncScope())
{
var db = scope.ServiceProvider.GetRequiredService<NexusDbContext>();
await db.Database.MigrateAsync();
var ownerEmail = configuration["Owner:Email"]?.Trim().ToLowerInvariant();
var ownerPassword = configuration["Owner:Password"];
var ownerDisplayName = configuration["Owner:DisplayName"]?.Trim();
var hasUsers = await db.Users.AnyAsync();
if (!hasUsers)
{
if (string.IsNullOrWhiteSpace(ownerEmail))
throw new InvalidOperationException("Owner:Email is required for initial setup.");
var initialDisplayName = string.IsNullOrWhiteSpace(ownerDisplayName)
? PasswordHelper.BuildOwnerDisplayName(ownerEmail)
: ownerDisplayName;
var initialPassword = string.IsNullOrWhiteSpace(ownerPassword)
? PasswordHelper.GenerateTemporaryPassword()
: ownerPassword;
if (!string.IsNullOrWhiteSpace(ownerPassword) && ownerPassword.Length < 10)
throw new InvalidOperationException("Owner:Password must be at least 10 characters when provided explicitly.");
db.Users.Add(new NexusUser
{
Email = ownerEmail,
NormalizedEmail = AuthService.NormalizeEmail(ownerEmail),
DisplayName = initialDisplayName,
PasswordHash = PasswordSecurity.Hash(initialPassword),
Role = "owner"
});
await db.SaveChangesAsync();
if (string.IsNullOrWhiteSpace(ownerPassword))
{
Console.Error.WriteLine($"[nexus] Initial owner credentials generated: displayName={initialDisplayName}, password={initialPassword}");
}
}
}
}
/// <summary>
/// Configures the HTTP middleware pipeline: forwarded headers, rate limiting, auth, security headers, and Swagger in development.
/// </summary>
public static IApplicationBuilder UseNexusPipeline(this IApplicationBuilder app, IWebHostEnvironment env)
{
app.UseForwardedHeaders();
app.UseRateLimiter();
app.UseAuthentication();
app.UseAuthorization();
app.UseSecurityHeaders();
if (env.IsDevelopment())
{
app.UseSwagger();
app.UseSwaggerUI();
}
return app;
}
}