using Model;
using PagedList;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;
using static AncestralTabletPositionController;
using static regionController;

/// <summary>
/// AncestralTabletController 的摘要描述
/// </summary>
public class AncestralTabletAreaController: ApiController
{
    private Model.ezEntities _db = new Model.ezEntities();
    public class AreaViewModel
    {
        public int? AreaId { get; set; }
        public string AreaName { get; set; }

        [Required(ErrorMessage = "區域編號為必填")]
        public string AreaCode { get; set; }
        public int? ParentAreaId { get; set; }
        public string AreaType { get; set; }
        public int? Price { get; set; }
        public int? SortOrder { get; set; }
        public bool IsDisabled { get; set; } = false;
        public string Description { get; set; }
    }
    public class RegionDto
    {
        public int AreaId { get; set; }
        public string AreaName { get; set; }
        public string AreaCode { get; set; }
        public int? SortOrder { get; set; }
        public int? ParentAreaId { get; set; }
        public string AreaType { get; set; }
        public bool IsDisabled { get; set; }
        public string Description { get; set; }
        public int? Price {  set; get; }

        public List<RegionDto> Children { get; set; } = new List<RegionDto>();
    }
    [HttpGet]
    [Route("api/ancestraltablet/area/getlist")]
    public IHttpActionResult GetList()
    {
        var allArea = _db.AncestralTabletArea.ToList();

        var rootRegions = allArea
            .Where(r => r.ParentAreaId == null)
            .OrderBy(r => r.SortOrder)
            .ToList();

        var tree = rootRegions
            .Select(r => BuildRegionDto(r, allArea))
            .ToList();
        return Ok(tree);

    }
    [HttpGet]
    [Route("api/ancestraltablet/area/getereawithposition")]
    public IHttpActionResult GetEreaWithPosition()
    {
        //获取有神位位置的区域
        var allArea = _db.AncestralTabletArea
            .Where(a => a.AncestralTabletPosition.Count()>0)
            .Select(a => new
            {
                a.AreaId,
                a.AreaName,
            })
            .ToList();
        return Ok(allArea);

    }
    private RegionDto BuildRegionDto(AncestralTabletArea area, List<AncestralTabletArea> allArea)
    {
        return new RegionDto
        {
            AreaId = area.AreaId,
            AreaName = area.AreaName,
            AreaCode = area.AreaCode,
            SortOrder = area.SortOrder,
            ParentAreaId = area.ParentAreaId,
            AreaType = area.AreaType,
            IsDisabled = area.IsDisabled,
            Description = area.Description,
            Price = area.Price,
            Children = allArea
                .Where(r => r.ParentAreaId == area.AreaId)
                .OrderBy(r => r.SortOrder)
                .Select(child => BuildRegionDto(child, allArea))
                .ToList(),
        };
    }
    [HttpPost]
    [Route("api/ancestraltablet/area/create")]
    public async Task<IHttpActionResult> CreateArea([FromBody] AreaViewModel tabletArea)
    {
        if (!ModelState.IsValid)
            return BadRequest(ModelState);
        try
        {
            var area = new AncestralTabletArea
            {
                AreaName = tabletArea.AreaName,
                AreaCode = tabletArea.AreaCode,
                ParentAreaId = tabletArea.ParentAreaId,
                AreaType = tabletArea.AreaType,
                Price = tabletArea.Price,
                SortOrder = tabletArea.SortOrder,
                IsDisabled = tabletArea.IsDisabled,
                Description = tabletArea.Description
            };
            _db.AncestralTabletArea.Add(area);
            await _db.SaveChangesAsync();
            tabletArea.AreaId = area.AreaId;
            return Ok(new { message = "區域建立成功", area = tabletArea });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }
    [HttpPost]
    [Route("api/ancestraltablet/area/edit")]
    public async Task<IHttpActionResult> EditArea([FromBody] AreaViewModel tabletArea)
    {
        if (!ModelState.IsValid)
            return BadRequest(ModelState);
        try
        {
            var oldArea = _db.AncestralTabletArea.Find(tabletArea.AreaId);
            if (oldArea == null)
            {
                return NotFound();
            }
            oldArea.AreaName = tabletArea.AreaName;
            oldArea.AreaCode = tabletArea.AreaCode;
            oldArea.ParentAreaId = tabletArea.ParentAreaId;
            oldArea.Price = tabletArea.Price;
            oldArea.SortOrder = tabletArea.SortOrder;
            oldArea.Description = tabletArea.Description;
            oldArea.IsDisabled = tabletArea.IsDisabled;
            await _db.SaveChangesAsync();
            return Ok(new { message = "區域修改成功", area = tabletArea });
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }
    [HttpGet]
    [Route("api/ancestraltablet/area/position/getlist")]
    public IHttpActionResult GetPositionList([FromUri] int areaId)
    {
        var positions = _db.AncestralTabletPosition
        .Where(p => p.AreaId == areaId)
        .Select(p => new AncestralTabletPositionDto
        {
            PositionId = p.PositionId,
            AreaId = p.AreaId,
            PositionCode = p.PositionCode,
            PositionName = p.PositionName,
            Price = p.Price,
            StatusCode = p.StatusCode,
            Description = p.Description,
            RowNo = p.RowNo,
            ColumnNo = p.ColumnNo
        })
        .ToList();

        return Ok(positions);
    }
}