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using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
using MySql.EntityFrameworkCore.Metadata;
using MySql.EntityFrameworkCore.Metadata.Internal;

namespace MySql.EntityFrameworkCore.Extensions
{
  /// <summary>
  ///     Extension methods for <see cref="IModel" /> for SQL Server-specific metadata.
  /// </summary>
  public static class MySQLModelExtensions
  {
    /// <summary>
    ///     Returns the <see cref="MySQLValueGenerationStrategy" /> to use for properties
    ///     of keys in the model, unless the property has a strategy explicitly set.
    /// </summary>
    /// <param name="model"> The model. </param>
    /// <returns> The default <see cref="MySQLValueGenerationStrategy" />. </returns>
    public static MySQLValueGenerationStrategy? GetValueGenerationStrategy([NotNull] this IModel model)
        => (MySQLValueGenerationStrategy?)model[MySQLAnnotationNames.ValueGenerationStrategy];

    /// <summary>
    ///     Attempts to set the <see cref="MySQLValueGenerationStrategy" /> to use for properties
    ///     of keys in the model that don't have a strategy explicitly set.
    /// </summary>
    /// <param name="model"> The model. </param>
    /// <param name="value"> The value to set. </param>
    public static void SetValueGenerationStrategy([NotNull] this IMutableModel model, MySQLValueGenerationStrategy? value)
        => model.SetOrRemoveAnnotation(MySQLAnnotationNames.ValueGenerationStrategy, value);

    /// <summary>
    ///     Attempts to set the <see cref="MySQLValueGenerationStrategy" /> to use for properties
    ///     of keys in the model that don't have a strategy explicitly set.
    /// </summary>
    /// <param name="model"> The model. </param>
    /// <param name="value"> The value to set. </param>
    /// <param name="fromDataAnnotation"> Indicates whether the configuration was specified using a data annotation. </param>
    public static void SetValueGenerationStrategy(
        [NotNull] this IConventionModel model, MySQLValueGenerationStrategy? value, bool fromDataAnnotation = false)
        => model.SetOrRemoveAnnotation(MySQLAnnotationNames.ValueGenerationStrategy, value, fromDataAnnotation);

    /// <summary>
    ///     Returns the <see cref="ConfigurationSource" /> for the default <see cref="MySQLValueGenerationStrategy" />.
    /// </summary>
    /// <param name="model"> The model. </param>
    /// <returns> The <see cref="ConfigurationSource" /> for the default <see cref="MySQLValueGenerationStrategy" />. </returns>
    public static ConfigurationSource? GetValueGenerationStrategyConfigurationSource([NotNull] this IConventionModel model)
        => model.FindAnnotation(MySQLAnnotationNames.ValueGenerationStrategy)?.GetConfigurationSource();
  }
}
