using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;
using Bit.Core.Entities;
using Bit.Core.Enums;
using Bit.Core.Models.Data;
using Bit.Core.Repositories;
using Bit.Core.Settings;
using Bit.Core.Utilities;
using Dapper;

namespace Bit.Infrastructure.Dapper.Repositories
{
    public class OrganizationUserRepository : Repository<OrganizationUser, Guid>, IOrganizationUserRepository
    {
        /// <summary>
        /// For use with methods with TDS stream issues.
        /// This has been observed in Linux-hosted SqlServers with large table-valued-parameters
        /// https://github.com/dotnet/SqlClient/issues/54
        /// </summary>
        private string _marsConnectionString;

        public OrganizationUserRepository(GlobalSettings globalSettings)
            : this(globalSettings.SqlServer.ConnectionString, globalSettings.SqlServer.ReadOnlyConnectionString)
        {
            var builder = new SqlConnectionStringBuilder(ConnectionString)
            {
                MultipleActiveResultSets = true,
            };
            _marsConnectionString = builder.ToString();
        }

        public OrganizationUserRepository(string connectionString, string readOnlyConnectionString)
            : base(connectionString, readOnlyConnectionString)
        { }

        public async Task<int> GetCountByOrganizationIdAsync(Guid organizationId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteScalarAsync<int>(
                    "[dbo].[OrganizationUser_ReadCountByOrganizationId]",
                    new { OrganizationId = organizationId },
                    commandType: CommandType.StoredProcedure);

                return results;
            }
        }

        public async Task<int> GetCountByFreeOrganizationAdminUserAsync(Guid userId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteScalarAsync<int>(
                    "[dbo].[OrganizationUser_ReadCountByFreeOrganizationAdminUser]",
                    new { UserId = userId },
                    commandType: CommandType.StoredProcedure);

                return results;
            }
        }

        public async Task<int> GetCountByOnlyOwnerAsync(Guid userId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteScalarAsync<int>(
                    "[dbo].[OrganizationUser_ReadCountByOnlyOwner]",
                    new { UserId = userId },
                    commandType: CommandType.StoredProcedure);

                return results;
            }
        }

        public async Task<int> GetCountByOrganizationAsync(Guid organizationId, string email, bool onlyRegisteredUsers)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var result = await connection.ExecuteScalarAsync<int>(
                    "[dbo].[OrganizationUser_ReadCountByOrganizationIdEmail]",
                    new { OrganizationId = organizationId, Email = email, OnlyUsers = onlyRegisteredUsers },
                    commandType: CommandType.StoredProcedure);

                return result;
            }
        }

        public async Task<ICollection<string>> SelectKnownEmailsAsync(Guid organizationId, IEnumerable<string> emails,
            bool onlyRegisteredUsers)
        {
            var emailsTvp = emails.ToArrayTVP("Email");
            using (var connection = new SqlConnection(_marsConnectionString))
            {
                var result = await connection.QueryAsync<string>(
                    "[dbo].[OrganizationUser_SelectKnownEmails]",
                    new { OrganizationId = organizationId, Emails = emailsTvp, OnlyUsers = onlyRegisteredUsers },
                    commandType: CommandType.StoredProcedure);

                // Return as a list to avoid timing out the sql connection
                return result.ToList();
            }
        }

        public async Task<OrganizationUser> GetByOrganizationAsync(Guid organizationId, Guid userId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByOrganizationIdUserId]",
                    new { OrganizationId = organizationId, UserId = userId },
                    commandType: CommandType.StoredProcedure);

                return results.SingleOrDefault();
            }
        }

        public async Task<ICollection<OrganizationUser>> GetManyByUserAsync(Guid userId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByUserId]",
                    new { UserId = userId },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<ICollection<OrganizationUser>> GetManyByOrganizationAsync(Guid organizationId,
            OrganizationUserType? type)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByOrganizationId]",
                    new { OrganizationId = organizationId, Type = type },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<Tuple<OrganizationUser, ICollection<SelectionReadOnly>>> GetByIdWithCollectionsAsync(Guid id)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryMultipleAsync(
                    "[dbo].[OrganizationUser_ReadWithCollectionsById]",
                    new { Id = id },
                    commandType: CommandType.StoredProcedure);

                var user = (await results.ReadAsync<OrganizationUser>()).SingleOrDefault();
                var collections = (await results.ReadAsync<SelectionReadOnly>()).ToList();
                return new Tuple<OrganizationUser, ICollection<SelectionReadOnly>>(user, collections);
            }
        }

        public async Task<OrganizationUserUserDetails> GetDetailsByIdAsync(Guid id)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserUserDetails>(
                    "[dbo].[OrganizationUserUserDetails_ReadById]",
                    new { Id = id },
                    commandType: CommandType.StoredProcedure);

                return results.SingleOrDefault();
            }
        }
        public async Task<Tuple<OrganizationUserUserDetails, ICollection<SelectionReadOnly>>>
            GetDetailsByIdWithCollectionsAsync(Guid id)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryMultipleAsync(
                    "[dbo].[OrganizationUserUserDetails_ReadWithCollectionsById]",
                    new { Id = id },
                    commandType: CommandType.StoredProcedure);

                var user = (await results.ReadAsync<OrganizationUserUserDetails>()).SingleOrDefault();
                var collections = (await results.ReadAsync<SelectionReadOnly>()).ToList();
                return new Tuple<OrganizationUserUserDetails, ICollection<SelectionReadOnly>>(user, collections);
            }
        }

        public async Task<ICollection<OrganizationUserUserDetails>> GetManyDetailsByOrganizationAsync(Guid organizationId)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserUserDetails>(
                    "[dbo].[OrganizationUserUserDetails_ReadByOrganizationId]",
                    new { OrganizationId = organizationId },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<ICollection<OrganizationUserOrganizationDetails>> GetManyDetailsByUserAsync(Guid userId,
            OrganizationUserStatusType? status = null)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserOrganizationDetails>(
                    "[dbo].[OrganizationUserOrganizationDetails_ReadByUserIdStatus]",
                    new { UserId = userId, Status = status },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<OrganizationUserOrganizationDetails> GetDetailsByUserAsync(Guid userId,
            Guid organizationId, OrganizationUserStatusType? status = null)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserOrganizationDetails>(
                    "[dbo].[OrganizationUserOrganizationDetails_ReadByUserIdStatusOrganizationId]",
                    new { UserId = userId, Status = status, OrganizationId = organizationId },
                    commandType: CommandType.StoredProcedure);

                return results.SingleOrDefault();
            }
        }

        public async Task UpdateGroupsAsync(Guid orgUserId, IEnumerable<Guid> groupIds)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteAsync(
                    "[dbo].[GroupUser_UpdateGroups]",
                    new { OrganizationUserId = orgUserId, GroupIds = groupIds.ToGuidIdArrayTVP() },
                    commandType: CommandType.StoredProcedure);
            }
        }

        public async Task<Guid> CreateAsync(OrganizationUser obj, IEnumerable<SelectionReadOnly> collections)
        {
            obj.SetNewId();
            var objWithCollections = JsonSerializer.Deserialize<OrganizationUserWithCollections>(
                JsonSerializer.Serialize(obj));
            objWithCollections.Collections = collections.ToArrayTVP();

            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteAsync(
                    $"[{Schema}].[OrganizationUser_CreateWithCollections]",
                    objWithCollections,
                    commandType: CommandType.StoredProcedure);
            }

            return obj.Id;
        }

        public async Task ReplaceAsync(OrganizationUser obj, IEnumerable<SelectionReadOnly> collections)
        {
            var objWithCollections = JsonSerializer.Deserialize<OrganizationUserWithCollections>(
                JsonSerializer.Serialize(obj));
            objWithCollections.Collections = collections.ToArrayTVP();

            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.ExecuteAsync(
                    $"[{Schema}].[OrganizationUser_UpdateWithCollections]",
                    objWithCollections,
                    commandType: CommandType.StoredProcedure);
            }
        }

        public async Task<ICollection<OrganizationUser>> GetManyByManyUsersAsync(IEnumerable<Guid> userIds)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByUserIds]",
                    new { UserIds = userIds.ToGuidIdArrayTVP() },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<ICollection<OrganizationUser>> GetManyAsync(IEnumerable<Guid> Ids)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByIds]",
                    new { Ids = Ids.ToGuidIdArrayTVP() },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<OrganizationUser> GetByOrganizationEmailAsync(Guid organizationId, string email)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUser>(
                    "[dbo].[OrganizationUser_ReadByOrganizationIdEmail]",
                    new { OrganizationId = organizationId, Email = email },
                    commandType: CommandType.StoredProcedure);

                return results.SingleOrDefault();
            }
        }

        public async Task DeleteManyAsync(IEnumerable<Guid> organizationUserIds)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                await connection.ExecuteAsync("[dbo].[OrganizationUser_DeleteByIds]",
                    new { Ids = organizationUserIds.ToGuidIdArrayTVP() }, commandType: CommandType.StoredProcedure);
            }
        }

        public async Task UpsertManyAsync(IEnumerable<OrganizationUser> organizationUsers)
        {
            var createUsers = new List<OrganizationUser>();
            var replaceUsers = new List<OrganizationUser>();
            foreach (var organizationUser in organizationUsers)
            {
                if (organizationUser.Id.Equals(default))
                {
                    createUsers.Add(organizationUser);
                }
                else
                {
                    replaceUsers.Add(organizationUser);
                }
            }

            await CreateManyAsync(createUsers);
            await ReplaceManyAsync(replaceUsers);
        }

        public async Task<ICollection<Guid>> CreateManyAsync(IEnumerable<OrganizationUser> organizationUsers)
        {
            if (!organizationUsers.Any())
            {
                return default;
            }

            foreach (var organizationUser in organizationUsers)
            {
                organizationUser.SetNewId();
            }

            var orgUsersTVP = organizationUsers.ToTvp();
            using (var connection = new SqlConnection(_marsConnectionString))
            {
                var results = await connection.ExecuteAsync(
                    $"[{Schema}].[{Table}_CreateMany]",
                    new { OrganizationUsersInput = orgUsersTVP },
                    commandType: CommandType.StoredProcedure);
            }

            return organizationUsers.Select(u => u.Id).ToList();
        }

        public async Task ReplaceManyAsync(IEnumerable<OrganizationUser> organizationUsers)
        {
            if (!organizationUsers.Any())
            {
                return;
            }

            var orgUsersTVP = organizationUsers.ToTvp();
            using (var connection = new SqlConnection(_marsConnectionString))
            {
                var results = await connection.ExecuteAsync(
                    $"[{Schema}].[{Table}_UpdateMany]",
                    new { OrganizationUsersInput = orgUsersTVP },
                    commandType: CommandType.StoredProcedure);
            }
        }

        public async Task<IEnumerable<OrganizationUserPublicKey>> GetManyPublicKeysByOrganizationUserAsync(
            Guid organizationId, IEnumerable<Guid> Ids)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserPublicKey>(
                    "[dbo].[User_ReadPublicKeysByOrganizationUserIds]",
                    new { OrganizationId = organizationId, OrganizationUserIds = Ids.ToGuidIdArrayTVP() },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }

        public async Task<IEnumerable<OrganizationUserUserDetails>> GetManyByMinimumRoleAsync(Guid organizationId, OrganizationUserType minRole)
        {
            using (var connection = new SqlConnection(ConnectionString))
            {
                var results = await connection.QueryAsync<OrganizationUserUserDetails>(
                    "[dbo].[OrganizationUser_ReadByMinimumRole]",
                    new { OrganizationId = organizationId, MinRole = minRole },
                    commandType: CommandType.StoredProcedure);

                return results.ToList();
            }
        }
    }
}