using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.UI.WebControls;

/// <summary>
/// AncestralTabletRecordController 的摘要描述
/// </summary>
public class AncestralTabletRecordController: ApiController
{
    private Model.ezEntities _db = new Model.ezEntities();
    [HttpGet]
    [Route("api/ancestraltablet/registrant/getlist")]
    public IHttpActionResult GetRegistrantList()
    {
        //获取登记人列表
        var data = _db.AncestralTabletRegistrant.Select(x => new
        {
            x.RegistrantCode,
            x.Name,
            x.Phone,
            x.Address,
            x.RegisterDate,
            x.Price,
            x.PositionId,
            x.StartDate,
            x.EndDate,
            x.IsLongTerm,
            x.IsActive,
            x.CreatedAt,
            x.UpdatedAt
        })
        .Take(1000)   // 取前1000条
        .ToList(); ;
        return Ok(data);
    }
    [HttpPost]
    [Route("api/ancestraltablet/registrant/getlistbypage")]
    public IHttpActionResult GetRegistrantListByPage([FromBody] RegistrantSearchDto searchDto)
    {
        //获取登记人列表
        var query = _db.AncestralTabletRegistrant.AsQueryable();
        if( !string.IsNullOrEmpty(searchDto.searchName))
        {
            query = query.Where(r => r.Name == searchDto.searchName);
        }
        var tatol = query.Count();
        var data = query.Select(x => new
        {
            x.RegistrantCode,
            x.Name,
            x.Phone,
            x.Address,
            x.RegisterDate,
            x.Price,
            x.PositionId,
            x.StartDate,
            x.EndDate,
            x.IsLongTerm,
            x.IsActive,
            x.CreatedAt,
            x.UpdatedAt
        })
        .OrderByDescending(a => a.CreatedAt)
        .Skip((searchDto.page - 1) * searchDto.pageSize)
        .Take(searchDto.pageSize)   // 取前1000条
        .ToList();
        return Ok(new
        {
            data = data,
            total = tatol

        });
    }

    [HttpGet]
    [Route("api/ancestraltablet/registrant/getbycode")]
    public IHttpActionResult GetRegistrantByCode([FromUri] string registrantCode)
    {
        var r = _db.AncestralTabletRegistrant.Find(registrantCode);
        if (r == null)
        {
            return NotFound();
        }
        var rDto = new
        {
            r.RegistrantCode,
            r.Name,
            r.Phone,
            r.Address,
            r.RegisterDate,
            r.Price,
            r.StartDate,
            r.EndDate,
            r.IsLongTerm,
            r.IsActive,
            r.PositionId,
            positionName = r.AncestralTabletPosition?.PositionName,


            // 嵌套查询牌位记录（PositionRecord）
            TabletRecord = r.AncestralTabletPositionRecord
                    .Select(pr => new
                    {
                        pr.RecordId,
                        pr.RegistrantCode,
                        pr.NPTitle,
                        pr.NPStandDate,
                        pr.NPYangShang,
                        pr.WPContent,
                    })
                    .FirstOrDefault()
        };
        return Ok(rDto);
    }

    [HttpPost]
    [Route("api/ancestraltablet/registrant/create")]
    public IHttpActionResult CreateRegistrant([FromBody] AncestralTabletRegistrantDto dto)
    {
        //新增登记人api
        if (dto == null)
        {
            return BadRequest("请求体不能为空");
        }
        if(!string.IsNullOrEmpty(dto.RegistrantCode))
        {
            return BadRequest("RegistrantCode 应传递空");
        }
        try
        {
            dto.RegistrantCode = GenerateRegistrantCode();

            // 设置默认创建时间
            dto.CreatedAt = DateTime.Now;
            var entity = new Model.AncestralTabletRegistrant
            {
                RegistrantCode = dto.RegistrantCode,
                Name = dto.Name,
                Phone = dto.Phone,
                Address = dto.Address,
                RegisterDate = dto.RegisterDate,
                Price = dto.Price,
                PositionId = dto.PositionId,
                StartDate = dto.startDate,
                EndDate = dto.endDate,
                IsLongTerm = dto.isLongTerm,
                IsActive = dto.isActive,
                CreatedAt = dto.CreatedAt,
                UpdatedAt = dto.UpdatedAt
            };

            // 假设你有一个 EF DbContext（如 _db）
            _db.AncestralTabletRegistrant.Add(entity);
            if (dto.PositionId != null)
            {
                var position = _db.AncestralTabletPosition
                                  .FirstOrDefault(p => p.PositionId == dto.PositionId);

                if (position != null)
                {
                    position.StatusCode = "used"; // 或者根据你的枚举/字段设置
                }
            }

            _db.SaveChanges();

            return Ok(new { message = "登记成功", registrantCode = entity.RegistrantCode });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }
    [HttpPost]
    [Route("api/ancestraltablet/registrant/update")]
    public IHttpActionResult UpdateRegistrant([FromBody] AncestralTabletRegistrantDto dto)
    {
        if (dto == null)
        {
            return BadRequest("请求体不能为空");
        }

        if (string.IsNullOrWhiteSpace(dto.RegistrantCode))
        {
            return BadRequest("缺少 RegistrantCode，无法进行更新操作");
        }

        try
        {
            // 查找原始资料
            var entity = _db.AncestralTabletRegistrant
                .FirstOrDefault(r => r.RegistrantCode == dto.RegistrantCode);

            if (entity == null)
            {
                return NotFound(); // 没有对应记录
            }

            // ===== 处理安位状态 =====
            if (entity.PositionId != dto.PositionId)
            {
                // 1. 原来的安位设置为可用
                if (entity.PositionId != null)
                {
                    var oldPosition = _db.AncestralTabletPosition
                        .FirstOrDefault(p => p.PositionId == entity.PositionId);

                    if (oldPosition != null)
                    {
                        oldPosition.StatusCode = "available"; // 可用
                    }
                }

                // 2. 新的安位设置为已使用
                if (dto.PositionId != null)
                {
                    var newPosition = _db.AncestralTabletPosition
                        .FirstOrDefault(p => p.PositionId == dto.PositionId);

                    if (newPosition != null)
                    {
                        newPosition.StatusCode = "used"; // 已使用
                    }
                }

                // 更新登记人安位
                entity.PositionId = dto.PositionId;
            }

            // 更新其它字段
            entity.Name = dto.Name;
            entity.Phone = dto.Phone;
            entity.Address = dto.Address;
            entity.RegisterDate = dto.RegisterDate;
            entity.Price = dto.Price;
            entity.StartDate = dto.startDate;
            entity.EndDate = dto.endDate;
            entity.IsLongTerm = dto.isLongTerm;
            entity.IsActive = dto.isActive;
            entity.UpdatedAt = DateTime.Now;

            _db.SaveChanges();

            return Ok(new { message = "登记人更新成功", registrantCode = entity.RegistrantCode });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }

    [HttpPost]
    [Route("api/ancestraltablet/pw/create")]
    public IHttpActionResult CreatePW([FromBody] AncestralTabletPositionRecordDto dto)
    {
        if (dto == null)
            return BadRequest("请求体不能为空");

        if (string.IsNullOrEmpty(dto.RegistrantCode))
            return BadRequest("登记人编号（RegistrantCode）不能为空");

        try
        {
            // 映射到数据库实体
            var entity = new Model.AncestralTabletPositionRecord
            {
                RegistrantCode = dto.RegistrantCode,
                NPTitle = dto.NPTitle,
                NPStandDate = dto.NPStandDate,
                NPYangShang = dto.NPYangShang,
                WPContent = dto.WPContent,
                CreatedAt = DateTime.Now,
                UpdatedAt = null
            };

            _db.AncestralTabletPositionRecord.Add(entity);
            _db.SaveChanges();

            return Ok(new { message = "牌位登记成功", recordId = entity.RecordId });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }
    [HttpPost]
    [Route("api/ancestraltablet/pw/update")]
    public IHttpActionResult UpdatePW([FromBody] AncestralTabletPositionRecordDto dto)
    {
        if (dto == null)
            return BadRequest("请求体不能为空");
        try
        {
            var entity = _db.AncestralTabletPositionRecord.Find(dto.RecordId);
            // 映射到数据库实体
            if (entity == null)
                return BadRequest("牌位不存在，更新失败");
            entity.RegistrantCode = dto.RegistrantCode;
            entity.NPTitle = dto.NPTitle;
            entity.NPStandDate = dto.NPStandDate;
            entity.NPYangShang = dto.NPYangShang;
            entity.WPContent = dto.WPContent;
            entity.UpdatedAt = DateTime.Now;
            _db.SaveChanges();

            return Ok(new { message = "牌位更新成功", recordId = entity.RecordId });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }

    public string GenerateRegistrantCode(string prefix = "REG", int randomLength = 6)
    {
        string datePart = DateTime.Now.ToString("yyyyMMdd");

        string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        var random = new Random();
        var suffix = new string(Enumerable.Repeat(chars, randomLength)
            .Select(s => s[random.Next(s.Length)]).ToArray());

        return $"{prefix}{datePart}{suffix}";
    }
    public class AncestralTabletRegistrantDto
    {
        public string RegistrantCode { get; set; }
        public string Name { get; set; }
        public string Phone { get; set; }
        public string Address { get; set; }
        public DateTime RegisterDate { get; set; }
        public int? Price { get; set; }
        public int? PositionId { get; set; }
        public DateTime startDate { get; set; }
        public DateTime? endDate { get; set; }
        public bool isLongTerm { get; set; } = false;
        public bool isActive { get; set; } = true;
        public DateTime CreatedAt { get; set; }
        public DateTime? UpdatedAt { get; set; }
    }
    public class AncestralTabletPositionRecordDto
    {
        public int? RecordId { get; set; }
        public string RegistrantCode { get; set; }
        public string NPTitle { get; set; }
        public DateTime NPStandDate { get; set; }
        public string NPYangShang { get; set; }
        public string WPContent { get; set; }
    }
    public class RegistrantSearchDto
    {
        public int page { get; set; } = 1;
        public int pageSize { get; set; } = 10;
        public string searchName { get; set; }
    }


}