using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using QYZH.InteractiveMagazine.IService;

using QYZH.InteractiveMagazine.Models.Common;
using QYZH.InteractiveMagazine.Models.Dto;
using QYZH.InteractiveMagazine.Models.Dto.CheckIn;
using QYZH.InteractiveMagazine.Models.Dto.Compensation;
using QYZH.InteractiveMagazine.Models.Dto.Points;
using QYZH.InteractiveMagazine.Models.Entity;
using QYZH.InteractiveMagazine.Models.Enum;
using QYZH.InteractiveMagazine.Repository;
using SqlSugar;

namespace QYZH.InteractiveMagazine.Service;

public class UsersService(
    BaseRepository<Users> usersRepository,
    ILogger<UsersService> _logger,
    IPointsService pointsService,
    ICheckInService checkInService,
    ICompensationTaskService compensationTaskService,
    IUserJournalService userJournalService,
    IOperationLogService operationLogService) : BaseRepository<Users>, IUsersService
{
    /// <summary>
    /// 分页查询用户列表
    /// </summary>
    public async Task<BaseResponse<PageListModel<UsersOutput>>> GetListAsync(UsersQueryInput input)
    {
        var page = Queryable()
            .WhereIF(!string.IsNullOrEmpty(input.WxUserId), u => u.OpenId == input.WxUserId)
            .OrderBy(u => u.Id, OrderByType.Desc)
            .ToPage<Users, UsersOutput>(input);

        return BaseResponse<PageListModel<UsersOutput>>.Success(page);
    }

    /// <summary>
    /// 获取用户详情（包含积分记录、签到记录、补偿任务、期刊列表）
    /// </summary>
    public async Task<BaseResponse<UserDetailOutput>> GetDetailAsync(long id)
    {
        var user = await GetByIdAsync<UsersOutput>(u => u.Id == id);
        if (user == null)
        {
            return BaseResponse<UserDetailOutput>.Fail("用户不存在");
        }

        // 并行查询关联数据
        var pointsTask = GetPointsRecordsAsync(id);
        var checkInTask = GetCheckInRecordsAsync(id);
        var compensationTask = GetFailedCompensationTasksAsync(id);
        var journalsTask = GetUserJournalsWithDetailAsync(id);

        await Task.WhenAll(pointsTask, checkInTask, compensationTask, journalsTask);

        return BaseResponse<UserDetailOutput>.Success(new UserDetailOutput
        {
            BasicInfo = user,
            PointsRecords = await pointsTask,
            CheckInRecords = await checkInTask,
            FailedCompensationTasks = await compensationTask,
            Journals = await journalsTask
        });
    }

    /// <summary>
    /// 获取用户积分记录（最近20条）
    /// </summary>
    private async Task<List<PointsRecordOutput>> GetPointsRecordsAsync(long userId)
    {
        try
        {
            var result = await pointsService.GetPointsRecordsAsync(new PointsRecordQueryInput
            {
                UserId = userId,
                PageIndex = 1,
                PageSize = 20
            });
            return result.Result ?? [];
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "获取用户积分记录失败，UserId: {UserId}", userId);
            return [];
        }
    }

    /// <summary>
    /// 获取用户签到记录
    /// </summary>
    private async Task<List<CheckInRecordOutput>> GetCheckInRecordsAsync(long userId)
    {
        try
        {
            var info = await checkInService.GetCheckInInfoAsync(userId);
            return info.RecentRecords ?? [];
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "获取用户签到记录失败，UserId: {UserId}", userId);
            return [];
        }
    }

    /// <summary>
    /// 获取用户失败的补偿任务（需要手动处理）
    /// </summary>
    private async Task<List<CompensationTaskOutput>> GetFailedCompensationTasksAsync(long userId)
    {
        try
        {
            var tasks = await compensationTaskService.GetTasksAsync(new GetCompensationTasksInput
            {
                Status = CompensationTaskStatusEnum.Failed,
                Limit = 50
            });
            return tasks.Where(t => t.UserId == userId).ToList();
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "获取用户失败补偿任务失败，UserId: {UserId}", userId);
            return [];
        }
    }

    /// <summary>
    /// 获取用户拥有的期刊列表（含期刊详情）
    /// </summary>
    private async Task<List<UserJournalItemOutput>> GetUserJournalsWithDetailAsync(long userId)
    {
        try
        {
            var userJournals = await Context.Queryable<UserJournal>()
                .Where(uj => uj.UserId == userId && !uj.IsDeleted)
                .OrderByDescending(uj => uj.CreatedAt)
                .ToListAsync();

            var result = new List<UserJournalItemOutput>();
            foreach (var uj in userJournals)
            {
                var journal = await Context.Queryable<Journal>()
                    .Where(j => j.Id == uj.JournalId && !j.IsDeleted)
                    .FirstAsync();

                if (journal != null)
                {
                    result.Add(new UserJournalItemOutput
                    {
                        BindId = uj.Id,
                        JournalId = uj.JournalId,
                        JournalTitle = journal.Title,
                        CoverImageUrl = journal.CoverImageUrl,
                        Type = uj.Type.ToString(),
                        Status = uj.Status.ToString(),
                        CreatedAt = uj.CreatedAt
                    });
                }
            }
            return result;
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "获取用户期刊列表失败，UserId: {UserId}", userId);
            return [];
        }
    }

    /// <summary>
    /// 更新用户状态
    /// </summary>
    public async Task<BaseResponse> UpdateStatusAsync(long id, UpdateUserStatusInput input)
    {
        var exists = await Queryable().AnyAsync(u => u.Id == id);
        if (!exists)
        {
            return BaseResponse.Fail("用户不存在");
        }

        var statusValue = input.Status == 1 ? UserStatusEnum.Active : UserStatusEnum.Disabled;
        var result = await UpdateAsync(
            u => new Users { Status = statusValue },
            u => u.Id == id
        );

        return result ? BaseResponse.Success() : BaseResponse.Fail("更新失败");
    }

    /// <summary>
    /// 手动增加用户积分
    /// </summary>
    public async Task<ManualPointsOutput> ManualAddPointsAsync(long userId, ManualAddPointsInput input, long operatorId, string operatorName, string? ipAddress = null)
    {
        _logger.LogInformation("管理员手动增加积分，UserId: {UserId}, Amount: {Amount}, Operator: {Operator}",
            userId, input.Amount, operatorName);

        // 校验用户是否存在
        var user = await Queryable().Where(u => u.Id == userId && !u.IsDeleted).FirstAsync();
        if (user == null)
            throw new BusinessException("用户不存在", 404);

        // 调用积分服务增加积分
        var result = await pointsService.AddPointsAsync(new AddPointsInput
        {
            UserId = userId,
            Amount = input.Amount,
            ChangeType = PointsChangeTypeEnum.ManualAdjust,
            Description = $"管理员手动增加: {input.Reason}",
            OperatorName = operatorName
        });

        // 记录操作日志
        var detail = JsonConvert.SerializeObject(new
        {
            Amount = input.Amount,
            Reason = input.Reason,
            PreviousBalance = result.PreviousBalance,
            NewBalance = result.NewBalance,
            RecordId = result.RecordId
        });

        await operationLogService.LogAsync(
            operatorId, operatorName,
            OperationLogActionType.ManualAddPoints,
            OperationLogTargetType.User,
            userId, user.Name, detail, ipAddress);

        return new ManualPointsOutput
        {
            RecordId = result.RecordId,
            PreviousBalance = result.PreviousBalance,
            NewBalance = result.NewBalance,
            ChangeAmount = input.Amount,
            OperatorName = operatorName,
            OperatedAt = DateTime.Now
        };
    }

    /// <summary>
    /// 手动扣除用户积分
    /// </summary>
    public async Task<ManualPointsOutput> ManualDeductPointsAsync(long userId, ManualDeductPointsInput input, long operatorId, string operatorName, string? ipAddress = null)
    {
        _logger.LogInformation("管理员手动扣除积分，UserId: {UserId}, Amount: {Amount}, Operator: {Operator}",
            userId, input.Amount, operatorName);

        // 校验用户是否存在
        var user = await Queryable().Where(u => u.Id == userId && !u.IsDeleted).FirstAsync();
        if (user == null)
            throw new BusinessException("用户不存在", 404);

        // 调用积分服务扣除积分
        var result = await pointsService.DeductPointsAsync(new DeductPointsInput
        {
            UserId = userId,
            Amount = input.Amount,
            ChangeType = PointsChangeTypeEnum.ManualAdjust,
            Description = $"管理员手动扣除: {input.Reason}",
            OperatorName = operatorName
        });

        // 记录操作日志
        var detail = JsonConvert.SerializeObject(new
        {
            Amount = input.Amount,
            Reason = input.Reason,
            PreviousBalance = result.PreviousBalance,
            NewBalance = result.NewBalance,
            RecordId = result.RecordId
        });

        await operationLogService.LogAsync(
            operatorId, operatorName,
            OperationLogActionType.ManualDeductPoints,
            OperationLogTargetType.User,
            userId, user.Name, detail, ipAddress);

        return new ManualPointsOutput
        {
            RecordId = result.RecordId,
            PreviousBalance = result.PreviousBalance,
            NewBalance = result.NewBalance,
            ChangeAmount = -input.Amount,
            OperatorName = operatorName,
            OperatedAt = DateTime.Now
        };
    }
}