using Microsoft.AspNetCore.Mvc;
using YD_Event.Application.Client.Dtos;
using YD_Event.Core.Entities;
using YD_Event.Core.Enum;
using SqlSugar;
using Furion.DatabaseAccessor;
using Microsoft.AspNetCore.Authorization;
using System.Security.Claims;
using Furion.FriendlyException;
using ProjectEntity = YD_Event.Core.Entities.Project;

namespace YD_Event.Application.Client;

/// <summary>
/// 小程序-个人中心接口
/// </summary>
[ApiDescriptionSettings("微信小程序接口")]
[Authorize]
public class MyController : IDynamicApiController
{
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.AppUser> _appUserRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Team> _teamRepository;
    private readonly ISqlSugarRepository<TeamMember> _teamMemberRepository;
    private readonly ISqlSugarRepository<EventCertificate> _certificateRepository;
    private readonly ISqlSugarRepository<PointsRecord> _pointsRecordRepository;
    private readonly ISqlSugarRepository<YD_Event.Core.Entities.Order> _orderRepository;
    private readonly ISqlSugarRepository<EventRegistration> _registrationRepository;
    private readonly ISqlSugarRepository<EventRegistrationItem> _registrationItemRepository;
    private readonly ISqlSugarRepository<EventInfo> _eventRepository;
    private readonly ISqlSugarRepository<MerchantCertification> _merchantCertificationRepository;
    private readonly IHttpContextAccessor _httpContextAccessor;

    public MyController(
        ISqlSugarRepository<YD_Event.Core.Entities.AppUser> appUserRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Team> teamRepository,
        ISqlSugarRepository<TeamMember> teamMemberRepository,
        ISqlSugarRepository<EventCertificate> certificateRepository,
        ISqlSugarRepository<PointsRecord> pointsRecordRepository,
        ISqlSugarRepository<YD_Event.Core.Entities.Order> orderRepository,
        ISqlSugarRepository<EventRegistration> registrationRepository,
        ISqlSugarRepository<EventRegistrationItem> registrationItemRepository,
        ISqlSugarRepository<EventInfo> eventRepository,
        ISqlSugarRepository<MerchantCertification> merchantCertificationRepository,
        IHttpContextAccessor httpContextAccessor)
    {
        _appUserRepository = appUserRepository;
        _teamRepository = teamRepository;
        _teamMemberRepository = teamMemberRepository;
        _certificateRepository = certificateRepository;
        _pointsRecordRepository = pointsRecordRepository;
        _orderRepository = orderRepository;
        _registrationRepository = registrationRepository;
        _registrationItemRepository = registrationItemRepository;
        _eventRepository = eventRepository;
        _merchantCertificationRepository = merchantCertificationRepository;
        _httpContextAccessor = httpContextAccessor;
    }

    private long GetCurrentUserId()
    {
        var userIdStr = _httpContextAccessor.HttpContext?.User?.FindFirst(AuthClaimsConst.AuthIdKey)?.Value;
        if (string.IsNullOrEmpty(userIdStr) || !long.TryParse(userIdStr, out long userId))
        {
            throw Oops.Bah("未登录或登录已失效");
        }
        return userId;
    }

    /// <summary>
    /// 获取个人主页信息
    /// </summary>
    /// <returns></returns>
    [HttpGet("profile")]
    public async Task<MyProfileDto> GetProfile()
    {
        var userId = GetCurrentUserId();
        var user = await _appUserRepository.GetFirstAsync(u => u.Id == userId);
        if (user == null) throw Oops.Bah("用户信息不存在");

        // 统计证书数量
        var certCount = await _certificateRepository.CountAsync(c => c.CreatedUserId == userId && c.CertificateStatus == 2);
        
        // 积分 (需计算积分总和，PointsRecord 表有 Points 字段，Type 1-加 2-减)
        // 简单计算：Sum(Type=1) - Sum(Type=2)
        var pointsIn = await _pointsRecordRepository.AsQueryable().Where(p => p.UserId == userId && p.Type == PointsOperationType.Acquire).SumAsync(p => p.Points);
        var pointsOut = await _pointsRecordRepository.AsQueryable().Where(p => p.UserId == userId && p.Type == PointsOperationType.Consume).SumAsync(p => p.Points);
        var pointsBalance = (int)(pointsIn - pointsOut);

        // 认证状态: 0-待提交, 1-已认证, 2-审核中, 3-失败
        int authStatus = 0;
        bool isAuthInfoSubmitted = !string.IsNullOrEmpty(user.Name) && !string.IsNullOrEmpty(user.IdCardNumber);
        
        if (!isAuthInfoSubmitted)
        {
            authStatus = 0; // 未认证
        }
        else if (user.AuditStatus == AuditStatus.Pass)
        {
            authStatus = 1; // 已认证
        }
        else if (user.AuditStatus == AuditStatus.PendingAudit)
        {
            authStatus = 2; // 审核中
        }
        else 
        {
            authStatus = 3; // 失败/其他
        }

        // 获取单位名称
        string? merchantName = null;
        if (user.MerchantCertificationId.HasValue)
        {
            var merchantCert = await _merchantCertificationRepository.GetFirstAsync(m => m.Id == user.MerchantCertificationId.Value);
            merchantName = merchantCert?.MerchantName;
        }

        return new MyProfileDto
        {
            NickName = user.NickName ?? "微信用户",
            Avatar = user.Avatar ?? "",
            Mobile = MaskMobile(user.Mobile),
            Points = pointsBalance,
            CertificateCount = certCount,
            AuthStatus = authStatus,
            MerchantName = merchantName,
            Gender = (int?)user.Gender,
            BirthDate = user.BirthDate
        };
    }

    /// <summary>
    /// 获取实名认证信息
    /// </summary>
    /// <returns></returns>
    [HttpGet("auth")]
    public async Task<MyAuthInfoDto> GetAuthInfo()
    {
        var userId = GetCurrentUserId();
        var user = await _appUserRepository.GetFirstAsync(u => u.Id == userId);
        if (user == null) throw Oops.Bah("用户信息不存在");

        int authType = 1; // 默认身份证认证
        if (!string.IsNullOrEmpty(user.PassportPhotoUrl))
        {
            authType = 2;
        }

        return new MyAuthInfoDto
        {
            AuthType = authType,
            Name = user.Name,
            Mobile = user.Mobile,
            Gender = (int?)user.Gender,
            BirthDate = user.BirthDate,
            IdCardNumber = user.IdCardNumber,
            IdCardImageUrl = user.IdCardImageUrl,
            PassportPhotoUrl = user.PassportPhotoUrl,
            AuditStatus = user.AuditStatus,
            AuditRemark = user.AuditRemark
        };
    }

    /// <summary>
    /// 提交实名认证
    /// </summary>
    /// <param name="input"></param>
    /// <returns></returns>
    [HttpPost("auth")]
    public async Task<bool> SubmitAuth([FromBody] SubmitAuthInput input)
    {
        var userId = GetCurrentUserId();
        var user = await _appUserRepository.GetFirstAsync(u => u.Id == userId);
        if (user == null) throw Oops.Bah("用户信息不存在");

        if (user.AuditStatus == AuditStatus.Pass) throw Oops.Bah("已通过实名认证，无需重复提交");
        if (user.AuditStatus == AuditStatus.PendingAudit) throw Oops.Bah("审核中，请勿重复提交");

        // 验证必填字段
        if (input.AuthType == 1)
        {
            if (string.IsNullOrEmpty(input.IdCardNumber)) throw Oops.Bah("身份证号不能为空");
            if (string.IsNullOrEmpty(input.IdCardImageUrl)) throw Oops.Bah("身份证正面图片不能为空");
        }
        else if (input.AuthType == 2)
        {
            if (string.IsNullOrEmpty(input.PassportPhotoUrl)) throw Oops.Bah("护照图片不能为空");
            if (!input.Gender.HasValue) throw Oops.Bah("性别不能为空");
            if (!input.BirthDate.HasValue) throw Oops.Bah("出生日期不能为空");
        }
        else
        {
            throw Oops.Bah("不支持的认证类型");
        }

        // 验证手机号验证码（此处仅占位，实际业务中需要验证短信验证码）
        if (string.IsNullOrEmpty(input.SmsCode)) throw Oops.Bah("手机号验证码不能为空");

        user.Name = input.Name;
        user.Mobile = input.Mobile;

        if (input.AuthType == 1)
        {
            user.IdCardNumber = input.IdCardNumber;
            user.IdCardImageUrl = input.IdCardImageUrl;
            user.PassportPhotoUrl = null; // 清空护照图片
        }
        else
        {
            user.PassportPhotoUrl = input.PassportPhotoUrl;
            user.IdCardImageUrl = null; // 清空身份证图片
            user.Gender = (Gender)input.Gender.Value;
            user.BirthDate = input.BirthDate.Value;
        }

        user.AuditStatus = AuditStatus.PendingAudit;
        user.UpdatedTime = DateTime.Now;
        
        return await _appUserRepository.UpdateAsync(user);
    }

    /// <summary>
    /// 我的团队列表
    /// </summary>
    /// <returns></returns>
    [HttpGet("teams")]
    public async Task<PageResult<MyTeamDto>> GetTeams([FromQuery] MyPageInput input)
    {
        var userId = GetCurrentUserId();
        
        var myTeamIds = await _teamMemberRepository.AsQueryable()
            .Where(tm => tm.UserId == userId && !tm.DeleteMark)
            .Select(tm => tm.TeamId)
            .ToListAsync();

        var query = _teamRepository.AsQueryable()
            .Where(t => (t.CreatedUserId == userId || myTeamIds.Contains(t.Id)) && !t.DeleteMark);

        var teams = await query.ToPagedListAsync(input);
        
        var teamIds = teams.Rows.Select(t => t.Id).ToList();
        var teamMembers = await _teamMemberRepository.AsQueryable()
            .Where(tm => teamIds.Contains(tm.TeamId) && !tm.DeleteMark)
            .ToListAsync();
        var memberCounts = teamMembers
            .GroupBy(tm => tm.TeamId)
            .ToDictionary(g => g.Key, g => g.Count());

        var result = new PageResult<MyTeamDto>
        {
            PageNo = teams.PageNo,
            PageSize = teams.PageSize,
            Total = teams.Total,
            Pages = teams.Pages,
            Rows = teams.Rows.Select(t => new MyTeamDto
            {
                Id = t.Id,
                Name = t.Name,
                IsLeader = t.CreatedUserId == userId,
                MemberCount = memberCounts.TryGetValue(t.Id, out var count) ? count : 0
            }).ToList()
        };

        return result;
    }

    /// <summary>
    /// 团队详情
    /// </summary>
    /// <param name="id">团队ID</param>
    /// <returns></returns>
    [HttpGet("teams/{id}")]
    public async Task<MyTeamDetailDto> GetTeamDetail(long id)
    {
        var userId = GetCurrentUserId();
        
        var team = await _teamRepository.GetFirstAsync(t => t.Id == id && !t.DeleteMark);
        if (team == null) throw Oops.Bah("团队不存在");

        var teamMembers = await _teamMemberRepository.AsQueryable()
            .Where(tm => tm.TeamId == id && !tm.DeleteMark)
            .ToListAsync();

        if (!teamMembers.Any(tm => tm.UserId == userId) && team.CreatedUserId != userId)
        {
            throw Oops.Bah("无权访问该团队");
        }

        var userIds = teamMembers.Select(tm => tm.UserId).ToList();
        var users = await _appUserRepository.AsQueryable()
            .Where(u => userIds.Contains(u.Id))
            .ToListAsync();

        var userDict = users.ToDictionary(u => u.Id);

        var members = teamMembers.Select(tm =>
        {
            userDict.TryGetValue(tm.UserId, out var user);
            return new MyTeamMemberDto
            {
                Name = user?.Name ?? "未知",
                Gender = (int)(user?.Gender ?? 0),
                Age = user?.Age,
                PersonType = (int)tm.PersonType,
                Mobile = user?.Mobile != null ? MaskMobile(user.Mobile) : null
            };
        }).ToList();

        var leader = members.FirstOrDefault(m => m.PersonType == 3);
        var coach = members.FirstOrDefault(m => m.PersonType == 2);

        return new MyTeamDetailDto
        {
            Id = team.Id,
            Name = team.Name,
            Leader = leader,
            Coach = coach,
            CreatedTime = team.CreatedTime,
            MemberCount = members.Count,
            Members = members
        };
    }

    /// <summary>
    /// 我的证书总览
    /// </summary>
    /// <returns></returns>
    [HttpGet("certificates/overview")]
    public async Task<MyCertificateOverviewDto> GetCertificatesOverview()
    {
        var userId = GetCurrentUserId();
        var count = await _certificateRepository.CountAsync(c => c.CreatedUserId == userId && c.CertificateStatus == 2 && !c.DeleteMark);
        
        return new MyCertificateOverviewDto
        {
            TotalCount = count
        };
    }

    /// <summary>
    /// 我的证书列表
    /// </summary>
    /// <returns></returns>
    [HttpGet("certificates")]
    public async Task<PageResult<MyCertificateDto>> GetCertificates([FromQuery] MyCertificatePageInput input)
    {
        var userId = GetCurrentUserId();
        
        // 先查询原始数据，然后在内存中转换证书名称
        var query = _certificateRepository.AsQueryable()
            .LeftJoin<EventInfo>((c, e) => c.EventId == e.Id)
            .LeftJoin<ProjectEntity>((c, e, p) => c.ProjectId == p.Id)
            .Where((c, e, p) => c.CreatedUserId == userId && c.CertificateStatus == 2 && !c.DeleteMark)
            .Select((c, e, p) => new 
            {
                Id = c.Id,
                EventName = e.EventName,
                ProjectName = p.Name,
                GroupName = c.GroupName,
                CertificateType = c.CertificateType,
                CertificateUrl = c.CertificateUrl,
                IssuedTime = c.IssuedTime
            })
            .OrderByDescending(c => c.IssuedTime);

        var pagedResult = await query.ToPagedListAsync(input);
        
        // 在内存中转换证书名称
        var result = new PageResult<MyCertificateDto>
        {
            PageNo = pagedResult.PageNo,
            PageSize = pagedResult.PageSize,
            Total = pagedResult.Total,
            Pages = pagedResult.Pages,
            Rows = pagedResult.Rows.Select(x => new MyCertificateDto
            {
                Id = x.Id,
                EventName = x.EventName,
                ProjectName = x.ProjectName,
                GroupName = x.GroupName,
                CertificateName = GetCertificateName(x.CertificateType),
                CertificateUrl = x.CertificateUrl,
                IssuedTime = x.IssuedTime
            }).ToList()
        };

        return result;
    }

    private string GetCertificateName(int certificateType)
    {
        return certificateType switch
        {
            1 => "冠军证书",
            2 => "亚军证书",
            3 => "季军证书",
            4 => "优胜证书",
            5 => "参与证书",
            _ => "荣誉证书"
        };
    }

    /// <summary>
    /// 我的积分总览
    /// </summary>
    /// <returns></returns>
    [HttpGet("points/overview")]
    public async Task<MyPointsOverviewDto> GetPointsOverview()
    {
        var userId = GetCurrentUserId();
        
        var pointsIn = await _pointsRecordRepository.AsQueryable().Where(p => p.UserId == userId && p.Type == PointsOperationType.Acquire).SumAsync(p => p.Points);
        var pointsOut = await _pointsRecordRepository.AsQueryable().Where(p => p.UserId == userId && p.Type == PointsOperationType.Consume).SumAsync(p => p.Points);
        var pointsBalance = (int)(pointsIn - pointsOut);

        return new MyPointsOverviewDto
        {
            TotalPoints = pointsBalance
        };
    }

    /// <summary>
    /// 我的积分记录
    /// </summary>
    /// <returns></returns>
    [HttpGet("points")]
    public async Task<PageResult<MyPointsRecordDto>> GetPoints([FromQuery] MyPointsPageInput input)
    {
        var userId = GetCurrentUserId();
        var query = _pointsRecordRepository.AsQueryable()
            .LeftJoin<EventInfo>((p, e) => p.EventId == e.Id)
            .LeftJoin<ProjectEntity>((p, e, pr) => p.ProjectId == pr.Id)
            .LeftJoin<ProjectGroup>((p, e, pr, pg) => p.ProjectGroupId == pg.Id)
            .Where((p, e, pr, pg) => p.UserId == userId && !p.DeleteMark);

        if (input.Type.HasValue)
        {
            var typeFilter = (PointsOperationType)input.Type.Value;
            query = query.Where((p, e, pr, pg) => p.Type == typeFilter);
        }

        if (input.MerchantCertificationId.HasValue)
        {
            query = query.Where((p, e, pr, pg) => p.MerchantCertificationId == input.MerchantCertificationId.Value);
        }

        var resultQuery = query.Select((p, e, pr, pg) => new MyPointsRecordDto
            {
                Id = p.Id,
                Title = p.Remark ?? (p.Type == PointsOperationType.Acquire ? "获取积分" : "消耗积分"),
                EventName = e.EventName,
                ProjectName = pr.Name,
                GroupName = pg.GroupName,
                Points = p.Points,
                Type = (int)p.Type,
                CreatedTime = p.CreatedTime,
                Rank = 1 // 积分记录表暂无名次字段，后续若有需要可补充
            })
            .OrderByDescending(p => p.CreatedTime);

        return await resultQuery.ToPagedListAsync(input);
    }

    /// <summary>
    /// 我的订单列表
    /// </summary>
    /// <returns></returns>
    [HttpGet("orders")]
    public async Task<PageResult<MyOrderDto>> GetOrders([FromQuery] MyPageInput input)
    {
        var userId = GetCurrentUserId();
        var query = _orderRepository.AsQueryable()
            .LeftJoin<EventInfo>((o, e) => o.EventId == e.Id)
            .Where((o, e) => o.CreatedUserId == userId && !o.DeleteMark)
            .Select((o, e) => new MyOrderDto
            {
                Id = o.Id,
                OrderNo = o.OrderNo,
                EventName = e.EventName,
                ActualAmount = o.ActualAmount,
                RefundAmount = o.OrderType == 2 ? o.ActualAmount : null,
                OrderStatus = o.OrderStatus,
                PaymentTime = o.PaymentTime,
                CreatedTime = o.CreatedTime
            })
            .OrderByDescending(o => o.CreatedTime);

        return await query.ToPagedListAsync(input);
    }

    /// <summary>
    /// 订单详情
    /// </summary>
    /// <param name="id">订单ID</param>
    /// <returns></returns>
    [HttpGet("orders/{id}")]
    public async Task<MyOrderDetailDto> GetOrderDetail(long id)
    {
        var userId = GetCurrentUserId();
        
        var order = await _orderRepository.GetFirstAsync(o => o.Id == id && o.CreatedUserId == userId && !o.DeleteMark);
        if (order == null) throw Oops.Bah("订单不存在");

        var eventName = await _eventRepository.AsQueryable()
            .Where(e => e.Id == order.EventId)
            .Select(e => e.EventName)
            .FirstAsync();

        var items = await _registrationItemRepository.AsQueryable()
            .Where(i => i.RegistrationId == order.RegistrationId && !i.DeleteMark)
            .Select(i => new MyOrderItemDto
            {
                ProjectName = i.ProjectName,
                GroupName = i.GroupName,
                Fee = i.TotalPrice
            })
            .ToListAsync();

        return new MyOrderDetailDto
        {
            Id = order.Id,
            OrderNo = order.OrderNo,
            EventName = eventName,
            ActualAmount = order.ActualAmount,
            RefundAmount = order.OrderType == 2 ? order.ActualAmount : null,
            RefundTime = order.OrderType == 2 ? order.PaymentTime : null,
            OrderStatus = order.OrderStatus,
            PaymentTime = order.PaymentTime,
            PaymentMethod = order.PaymentMethod,
            Items = items
        };
    }

    /// <summary>
    /// 我的参赛记录（暂不对外提供）
    /// </summary>
    /// <returns></returns>
    [ApiDescriptionSettings(false)]
    [NonAction]
    public async Task<PageResult<MyRegistrationDto>> GetRegistrations([FromQuery] MyPageInput input)
    {
        var userId = GetCurrentUserId();
        var query = _registrationRepository.AsQueryable()
            .LeftJoin<EventInfo>((r, e) => r.EventId == e.Id)
            .Where(r => r.CreatedUserId == userId && !r.DeleteMark)
            .Select((r, e) => new MyRegistrationDto
            {
                Id = r.Id,
                EventName = e.EventName,
                TeamName = r.TeamName,
                Status = r.RegistrationStatus,
                RegistrationTime = r.RegistrationTime,
                ProjectNames = ""
            })
            .OrderByDescending(r => r.RegistrationTime);

        var result = await query.ToPagedListAsync(input);
        
        if (result.Rows.Any())
        {
            var registrationIds = result.Rows.Select(r => r.Id).ToList();
            var items = await _registrationItemRepository.AsQueryable()
                .Where(i => registrationIds.Contains(i.RegistrationId) && !i.DeleteMark)
                .ToListAsync();

            var itemsByRegistrationId = items.GroupBy(i => i.RegistrationId)
                .ToDictionary(g => g.Key, g => string.Join("、", g.Select(i => i.ProjectName)));

            foreach (var row in result.Rows)
            {
                if (itemsByRegistrationId.TryGetValue(row.Id, out var projectNames))
                {
                    row.ProjectNames = projectNames;
                }
            }
        }

        return result;
    }

    private string MaskMobile(string mobile)
    {
        if (string.IsNullOrEmpty(mobile) || mobile.Length < 7) return mobile;
        return mobile.Substring(0, 3) + "****" + mobile.Substring(7);
    }
}