admin/Azaion.Common/Database/AzaionDbShemaHolder.cs

using Azaion.Common.Entities;
using Azaion.Common.Extensions;
using LinqToDB;
using LinqToDB.Mapping;
using Newtonsoft.Json;

namespace Azaion.Common.Database;

public static class AzaionDbSchemaHolder
{
    public static readonly MappingSchema MappingSchema;

    static AzaionDbSchemaHolder()
    {
        MappingSchema = new MappingSchema();

        MappingSchema.EntityDescriptorCreatedCallback = (_, entityDescriptor) =>
        {
            foreach (var entityDescriptorColumn in entityDescriptor.Columns)
                entityDescriptorColumn.ColumnName = entityDescriptorColumn.ColumnName.ToSnakeCase();
        };

        var builder = new FluentMappingBuilder(MappingSchema);

        builder.Entity<User>()
            .HasTableName("users")
            .Property(x => x.Id)
                .IsPrimaryKey()
                .HasDataType(DataType.Guid)
            .Property(x => x.Role)
                .HasDataType(DataType.Text)
                .HasConversion(v => v.ToString(), v => (RoleEnum)Enum.Parse(typeof(RoleEnum), v))
            .Property(x => x.UserConfig)
                .HasConversion(
                    v => v == null ? null : JsonConvert.SerializeObject(v),
                    p => string.IsNullOrEmpty(p) ? new UserConfig() : JsonConvert.DeserializeObject<UserConfig>(p))
                .IsNullable();

        builder.Entity<DetectionClass>()
            .HasTableName("detection_classes")
            .Property(x => x.Id)
                .IsPrimaryKey()
                .IsIdentity();

        builder.Build();
    }
}