using System.ComponentModel.DataAnnotations.Schema;
using System.Reflection;
using Dapper;

namespace MicroORM;

public static class DapperTypeMapRegistrar
{
    public static void RegisterFor(Type type)
    {
        SqlMapper.SetTypeMap(
            type,
            new CustomPropertyTypeMap(
                type,
                (t, columnName) =>
                {
                    // [Column]
                    var prop = t.GetProperties()
                        .FirstOrDefault(p =>
                            p.GetCustomAttribute<ColumnAttribute>()?.Name
                                .Equals(columnName, StringComparison.OrdinalIgnoreCase) == true
                        );

                    if (prop != null)
                        return prop;

                    // Directo
                    prop = t.GetProperty(columnName,
                        BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);

                    if (prop != null)
                        return prop;

                    // snake_case
                    var pascal = string.Concat(
                        columnName.Split('_')
                            .Select(s => char.ToUpperInvariant(s[0]) + s[1..])
                    );

                    return t.GetProperty(pascal,
                        BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
                }
            )
        );
    }
}