using Microsoft.EntityFrameworkCore;

namespace Projection.ReadModel;

/// <summary>
/// The read projection's persistence. This single store is the system's rebuildable read model
/// (PRD §8.4): the Event Subscriber writes to it (projector) and the projection-api reads it
/// (query). Both processes are the one "Read Projection" bounded context and share this schema —
/// not a cross-domain DB share (ADR-0008 reconciles this with CLAUDE.md §8.5).
/// </summary>
public sealed class ProjectionDbContext(DbContextOptions<ProjectionDbContext> options) : DbContext(options)
{
    /// <summary>The public-facing register rows (public-safe filtering is tightened in S-09).</summary>
    public DbSet<RegisterEntryRow> RegisterEntries => Set<RegisterEntryRow>();

    /// <summary>The Event Subscriber's durable log of accepted notifications — idempotency guard and rebuild source.</summary>
    public DbSet<ProcessedNotificationRow> ProcessedNotifications => Set<ProcessedNotificationRow>();

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<RegisterEntryRow>(e =>
        {
            e.ToTable("register_projection");
            e.HasKey(r => r.Id);
            e.Property(r => r.Id).HasColumnName("id");
            e.Property(r => r.Status).HasColumnName("status").IsRequired();
            e.Property(r => r.Bsn).HasColumnName("bsn");
            e.Property(r => r.NaamPlaceholder).HasColumnName("naam_placeholder");
        });

        modelBuilder.Entity<ProcessedNotificationRow>(e =>
        {
            e.ToTable("processed_notifications");
            e.HasKey(r => r.Key);
            e.Property(r => r.Key).HasColumnName("key");
            e.Property(r => r.Actie).HasColumnName("actie").IsRequired();
            e.Property(r => r.ZaakId).HasColumnName("zaak_id").IsRequired();
            e.Property(r => r.Resource).HasColumnName("resource").IsRequired();
            e.Property(r => r.ReceivedAt).HasColumnName("received_at");
        });
    }
}

/// <summary>A register projection row. <c>Bsn</c>/<c>NaamPlaceholder</c> are deferred (ADR-0008).</summary>
public sealed class RegisterEntryRow
{
    public required string Id { get; set; }
    public required string Status { get; set; }
    public string? Bsn { get; set; }
    public string? NaamPlaceholder { get; set; }
}

/// <summary>An accepted notification, retained so the projection can be rebuilt without OpenZaak (§8.1).</summary>
public sealed class ProcessedNotificationRow
{
    public required string Key { get; set; }
    public required string Actie { get; set; }
    public required string ZaakId { get; set; }

    /// <summary>The ZGW resource (e.g. <c>zaak</c> or <c>status</c>) — retained so a rebuild reprojects
    /// the right status without reading OpenZaak (S-09b).</summary>
    public required string Resource { get; set; }

    public DateTimeOffset ReceivedAt { get; set; }
}