using EAIAdminDAL.DTO;
using EAIAdminDAL.Query;
using GB5Shared.DTO.Framework.Login;
using GB5Shared.GenerateAutoNumber;
using GB5Shared.QueryExecutor;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using static GB5Shared.GB5Constant.Constant;

namespace EAIAdminDAL.CustomCode
{
    public class EAIBotAdminDAL : IEAIBotAdminDAL
    {
        private readonly IQueryExecutor _qe;
        private readonly AutoNumber _autoNumber;
        private readonly ILogger<EAIBotAdminDAL> _logger;

        public EAIBotAdminDAL(IQueryExecutor qe, AutoNumber autoNumber, ILogger<EAIBotAdminDAL> logger)
        {
            _qe         = qe         ?? throw new ArgumentNullException(nameof(qe));
            _autoNumber = autoNumber ?? throw new ArgumentNullException(nameof(autoNumber));
            _logger     = logger     ?? throw new ArgumentNullException(nameof(logger));
        }

        public async Task<IEnumerable<EAIBotAdminDTO>> GetBotListAsync(
            string? search, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                var searchPattern = string.IsNullOrWhiteSpace(search) ? null : $"%{search}%";

                var result = await _qe.QueryAsync<EAIBotAdminDTO>(
                    login,
                    EAIBotAdminQB.GET_BOT_LIST,
                    new { TenantId = login.ClientId, SearchPattern = searchPattern },
                    cancellationToken: ct).ConfigureAwait(false);

                return result ?? [];
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | GetBotList | Cancelled | Tenant={TenantId}", login.ClientId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | GetBotList | Error | Tenant={TenantId}", login.ClientId);
                throw;
            }
        }

        public async Task<EAIBotAdminDTO?> GetBotAsync(
            int botId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                return await _qe.QuerySingleAsync<EAIBotAdminDTO>(
                    login,
                    EAIBotAdminQB.GET_BOT,
                    new { BotId = botId, TenantId = login.ClientId },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | GetBot | Cancelled | BotId={Id}", botId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | GetBot | Error | BotId={Id}", botId);
                throw;
            }
        }

        public async Task<int> InsertBotAsync(
            EAIBotAdminDTO dto, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                // AIBOTID is a plain INT PK (not IDENTITY) — must be generated here.
                var auto = await _autoNumber.GetNumberAsync(1, AUTONUMBERCONSTANT.EAIBOT, login)
                    .ConfigureAwait(false);
                var newId = auto.StartNumber;
                var now = DateTime.UtcNow;

                await _qe.ExecuteAsync(
                    login,
                    EAIBotAdminQB.INSERT_BOT,
                    new
                    {
                        BotId          = newId,
                        TenantId       = login.ClientId,
                        dto.BotCode,
                        dto.Name,
                        dto.InitiativeCode,
                        dto.Description,
                        dto.IsReadOnly,
                        dto.EAIRemoteId,
                        dto.Version,
                        CreatedById    = login.UserId,
                        CreatedOn      = now
                    },
                    cancellationToken: ct).ConfigureAwait(false);

                _logger.LogInformation("DAL | InsertBot | Completed | NewId={NewId}", newId);
                return newId;
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | InsertBot | Cancelled | BotCode={Code}", dto.BotCode);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | InsertBot | Error | BotCode={Code}", dto.BotCode);
                throw;
            }
        }

        public async Task UpdateBotAsync(
            EAIBotAdminDTO dto, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                await _qe.ExecuteAsync(
                    login,
                    EAIBotAdminQB.UPDATE_BOT,
                    new
                    {
                        dto.BotId,
                        TenantId       = login.ClientId,
                        dto.Name,
                        dto.InitiativeCode,
                        dto.Description,
                        dto.IsReadOnly,
                        dto.EAIRemoteId,
                        dto.Version,
                        ModifiedById   = login.UserId,
                        ModifiedOn     = DateTime.UtcNow
                    },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | UpdateBot | Cancelled | BotId={Id}", dto.BotId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | UpdateBot | Error | BotId={Id}", dto.BotId);
                throw;
            }
        }

        public async Task UpdateEAIRemoteIdAsync(
            int botId, long eaiRemoteId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            await _qe.ExecuteAsync(
                login,
                EAIBotAdminQB.UPDATE_EAIREMOTEID,
                new { BotId = botId, TenantId = login.ClientId, EAIRemoteId = eaiRemoteId },
                cancellationToken: ct).ConfigureAwait(false);
        }

        public async Task DeleteBotAsync(
            int botId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                await _qe.ExecuteAsync(
                    login,
                    EAIBotAdminQB.DELETE_BOT,
                    new
                    {
                        BotId        = botId,
                        TenantId     = login.ClientId,
                        ModifiedById = login.UserId,
                        ModifiedOn   = DateTime.UtcNow
                    },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | DeleteBot | Cancelled | BotId={Id}", botId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | DeleteBot | Error | BotId={Id}", botId);
                throw;
            }
        }

        public async Task<bool> BotCodeExistsAsync(
            string botCode, int excludeBotId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            var count = await _qe.ExecuteScalarAsync<int>(
                login,
                EAIBotAdminQB.EXISTS_BOTCODE,
                new { BotCode = botCode, BotId = excludeBotId },
                cancellationToken: ct).ConfigureAwait(false);

            return count == 1;
        }
    }
}