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 EAIInitiativeAdminDAL : IEAIInitiativeAdminDAL
    {
        private readonly IQueryExecutor _qe;
        private readonly AutoNumber _autoNumber;
        private readonly ILogger<EAIInitiativeAdminDAL> _logger;

        public EAIInitiativeAdminDAL(IQueryExecutor qe, AutoNumber autoNumber, ILogger<EAIInitiativeAdminDAL> 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<EAIInitiativeAdminDTO>> GetInitiativeListAsync(
            string? search, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

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

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

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

        public async Task<EAIInitiativeAdminDTO?> GetInitiativeAsync(
            int initiativeId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            try
            {
                return await _qe.QuerySingleAsync<EAIInitiativeAdminDTO>(
                    login,
                    EAIInitiativeAdminQB.GET_INITIATIVE,
                    new { InitiativeId = initiativeId, TenantId = login.ClientId },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | GetInitiative | Cancelled | InitiativeId={Id}", initiativeId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | GetInitiative | Error | InitiativeId={Id}", initiativeId);
                throw;
            }
        }

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

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

                await _qe.ExecuteAsync(
                    login,
                    EAIInitiativeAdminQB.INSERT_INITIATIVE,
                    new
                    {
                        InitiativeId   = newId,
                        TenantId       = login.ClientId,
                        dto.InitiativeCode,
                        dto.InitiativeName,
                        dto.MaturityLevel,
                        dto.EAIRemoteId,
                        dto.Version,
                        CreatedById    = login.UserId,
                        CreatedOn      = now
                    },
                    cancellationToken: ct).ConfigureAwait(false);

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

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

            try
            {
                await _qe.ExecuteAsync(
                    login,
                    EAIInitiativeAdminQB.UPDATE_INITIATIVE,
                    new
                    {
                        dto.InitiativeId,
                        TenantId       = login.ClientId,
                        dto.InitiativeName,
                        dto.MaturityLevel,
                        dto.EAIRemoteId,
                        dto.Version,
                        ModifiedById   = login.UserId,
                        ModifiedOn     = DateTime.UtcNow
                    },
                    cancellationToken: ct).ConfigureAwait(false);
            }
            catch (OperationCanceledException)
            {
                _logger.LogWarning("DAL | UpdateInitiative | Cancelled | InitiativeId={Id}", dto.InitiativeId);
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "DAL | UpdateInitiative | Error | InitiativeId={Id}", dto.InitiativeId);
                throw;
            }
        }

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

            await _qe.ExecuteAsync(
                login,
                EAIInitiativeAdminQB.UPDATE_EAIREMOTEID,
                new { InitiativeId = initiativeId, TenantId = login.ClientId, EAIRemoteId = eaiRemoteId },
                cancellationToken: ct).ConfigureAwait(false);
        }

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

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

        public async Task<bool> InitiativeCodeExistsAsync(
            string initiativeCode, int excludeInitiativeId, LoginDTO login, CancellationToken ct = default)
        {
            ct.ThrowIfCancellationRequested();

            var count = await _qe.ExecuteScalarAsync<int>(
                login,
                EAIInitiativeAdminQB.EXISTS_INITIATIVECODE,
                new { InitiativeCode = initiativeCode, InitiativeId = excludeInitiativeId },
                cancellationToken: ct).ConfigureAwait(false);

            return count == 1;
        }
    }
}