using System;
using System.Collections.Generic;
using System.Data;
using Bit.Core.Entities;
using Bit.Core.Models.Data;
using Dapper;

namespace Bit.Infrastructure.Dapper
{
    public static class DapperHelpers
    {
        public static DataTable ToGuidIdArrayTVP(this IEnumerable<Guid> ids)
        {
            return ids.ToArrayTVP("GuidId");
        }

        public static DataTable ToArrayTVP<T>(this IEnumerable<T> values, string columnName)
        {
            var table = new DataTable();
            table.SetTypeName($"[dbo].[{columnName}Array]");
            table.Columns.Add(columnName, typeof(T));

            if (values != null)
            {
                foreach (var value in values)
                {
                    table.Rows.Add(value);
                }
            }

            return table;
        }

        public static DataTable ToArrayTVP(this IEnumerable<SelectionReadOnly> values)
        {
            var table = new DataTable();
            table.SetTypeName("[dbo].[SelectionReadOnlyArray]");

            var idColumn = new DataColumn("Id", typeof(Guid));
            table.Columns.Add(idColumn);
            var readOnlyColumn = new DataColumn("ReadOnly", typeof(bool));
            table.Columns.Add(readOnlyColumn);
            var hidePasswordsColumn = new DataColumn("HidePasswords", typeof(bool));
            table.Columns.Add(hidePasswordsColumn);

            if (values != null)
            {
                foreach (var value in values)
                {
                    var row = table.NewRow();
                    row[idColumn] = value.Id;
                    row[readOnlyColumn] = value.ReadOnly;
                    row[hidePasswordsColumn] = value.HidePasswords;
                    table.Rows.Add(row);
                }
            }

            return table;
        }

        public static DataTable ToTvp(this IEnumerable<OrganizationUser> orgUsers)
        {
            var table = new DataTable();
            table.SetTypeName("[dbo].[OrganizationUserType]");

            var columnData = new List<(string name, Type type, Func<OrganizationUser, object> getter)>
            {
                (nameof(OrganizationUser.Id), typeof(Guid), ou => ou.Id),
                (nameof(OrganizationUser.OrganizationId), typeof(Guid), ou => ou.OrganizationId),
                (nameof(OrganizationUser.UserId), typeof(Guid), ou => ou.UserId),
                (nameof(OrganizationUser.Email), typeof(string), ou => ou.Email),
                (nameof(OrganizationUser.Key), typeof(string), ou => ou.Key),
                (nameof(OrganizationUser.Status), typeof(byte), ou => ou.Status),
                (nameof(OrganizationUser.Type), typeof(byte), ou => ou.Type),
                (nameof(OrganizationUser.AccessAll), typeof(bool), ou => ou.AccessAll),
                (nameof(OrganizationUser.ExternalId), typeof(string), ou => ou.ExternalId),
                (nameof(OrganizationUser.CreationDate), typeof(DateTime), ou => ou.CreationDate),
                (nameof(OrganizationUser.RevisionDate), typeof(DateTime), ou => ou.RevisionDate),
                (nameof(OrganizationUser.Permissions), typeof(string), ou => ou.Permissions),
                (nameof(OrganizationUser.ResetPasswordKey), typeof(string), ou => ou.ResetPasswordKey),
            };

            foreach (var (name, type, getter) in columnData)
            {
                var column = new DataColumn(name, type);
                table.Columns.Add(column);
            }

            foreach (var orgUser in orgUsers ?? new OrganizationUser[] { })
            {
                var row = table.NewRow();
                foreach (var (name, type, getter) in columnData)
                {
                    var val = getter(orgUser);
                    if (val == null)
                    {
                        row[name] = DBNull.Value;
                    }
                    else
                    {
                        row[name] = val;
                    }
                }
                table.Rows.Add(row);
            }

            return table;
        }
    }
}