using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;
using ZB.MOM.WW.ScadaBridge.Commons.Entities.Deployment;
using ZB.MOM.WW.ScadaBridge.Commons.Entities.Instances;

namespace ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Configurations;

public class DeploymentRecordConfiguration : IEntityTypeConfiguration<DeploymentRecord>
{
    /// <summary>Configures the EF Core mapping for <see cref="DeploymentRecord"/>.</summary>
    /// <param name="builder">The entity type builder.</param>
    public void Configure(EntityTypeBuilder<DeploymentRecord> builder)
    {
        builder.HasKey(d => d.Id);

        builder.Property(d => d.DeploymentId)
            .IsRequired()
            .HasMaxLength(100);

        builder.Property(d => d.RevisionHash)
            .HasMaxLength(100);

        builder.Property(d => d.DeployedBy)
            .IsRequired()
            .HasMaxLength(200);

        builder.Property(d => d.Status)
            .HasConversion<string>()
            .HasMaxLength(50);

        builder.HasOne<Instance>()
            .WithMany()
            .HasForeignKey(d => d.InstanceId)
            .OnDelete(DeleteBehavior.Restrict);

        // Optimistic concurrency on deployment status records
        builder.Property<byte[]>("RowVersion")
            .IsRowVersion();

        builder.HasIndex(d => d.DeploymentId).IsUnique();
        builder.HasIndex(d => d.InstanceId);

        // Deployment-list sort key. Every list read orders DeployedAt DESC, Id DESC
        // (DeploymentManagerRepository.QueryDeploymentListPageAsync, which register
        // row 37 made the single paged read behind BOTH the Central UI page and the
        // CLI/HTTP QueryDeployments command) — Id is the deterministic tie-break, because
        // a bulk site deploy stamps many rows in the same DeployedAt instant and a
        // non-deterministic order would let a row repeat or vanish across pages.
        // Declaring both key columns descending lets a forward scan feed the paged
        // Skip/Take directly instead of the server sorting the whole filtered set per
        // page (deferred-work register row 35).
        //
        // This REPLACES the old single-column HasIndex(d => d.DeployedAt): that index
        // is strictly redundant here, not merely overlapping. DeployedAt leads both, so
        // any predicate the old one served the composite serves too (direction does not
        // affect seekability — SQL Server scans either way), and the leaf is the same
        // width, since Id is the clustered PK and was therefore already sitting in the
        // old index's leaf as the row locator. Keeping it would buy nothing and cost a
        // second index maintained on every insert and status transition.
        builder.HasIndex(d => new { d.DeployedAt, d.Id })
            .IsDescending(true, true)
            .HasDatabaseName("IX_DeploymentRecords_DeployedAt_Id");
    }
}

public class DeployedConfigSnapshotConfiguration : IEntityTypeConfiguration<DeployedConfigSnapshot>
{
    /// <summary>Configures the EF Core mapping for <see cref="DeployedConfigSnapshot"/>.</summary>
    /// <param name="builder">The entity type builder.</param>
    public void Configure(EntityTypeBuilder<DeployedConfigSnapshot> builder)
    {
        builder.HasKey(s => s.Id);

        builder.Property(s => s.DeploymentId)
            .IsRequired()
            .HasMaxLength(100);

        builder.Property(s => s.RevisionHash)
            .IsRequired()
            .HasMaxLength(100);

        builder.Property(s => s.ConfigurationJson)
            .IsRequired();

        builder.HasOne<Instance>()
            .WithMany()
            .HasForeignKey(s => s.InstanceId)
            .OnDelete(DeleteBehavior.Cascade);

        builder.HasIndex(s => s.InstanceId).IsUnique();
        builder.HasIndex(s => s.DeploymentId);
    }
}

public class SystemArtifactDeploymentRecordConfiguration : IEntityTypeConfiguration<SystemArtifactDeploymentRecord>
{
    /// <summary>Configures the EF Core mapping for <see cref="SystemArtifactDeploymentRecord"/>.</summary>
    /// <param name="builder">The entity type builder.</param>
    public void Configure(EntityTypeBuilder<SystemArtifactDeploymentRecord> builder)
    {
        builder.HasKey(d => d.Id);

        builder.Property(d => d.ArtifactType)
            .IsRequired()
            .HasMaxLength(100);

        builder.Property(d => d.DeployedBy)
            .IsRequired()
            .HasMaxLength(200);

        builder.Property(d => d.PerSiteStatus)
            .HasMaxLength(4000);

        builder.HasIndex(d => d.DeployedAt);
    }
}