using Application.Domain.Entities;
using Infrastructure.Application;
using Infrastructure.Data;
using Infrastructure.Extensions;
using Infrastructure.Web.Mvc;
using IoT.Shared.Areas.Admin.Controlls;
using IoTCenter.Application.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using System;
using System.Linq;

namespace IoTCenter.Areas.Admin.Controllers
{
    [Authorize]
    [Area(nameof(Admin))]
    public class OrganController : CrudController<Organ, EditOrganModel>
    {
        private readonly AjaxController _ajax;

        public OrganController(IRepository<Organ> repo, AjaxController ajax) : base(repo)
        {
            this._ajax = ajax;
        }

        public override IQueryable<Organ> Include(IQueryable<Organ> query)
        {
            return query
                .Include(o => o.Area)
                .Include(o => o.Parent)
                .Include(o => o.OrganNodes).ThenInclude(o => o.Node);
        }

        public override IQueryable<Organ> Query(PagedListModel<EditOrganModel> model, IQueryable<Organ> query)
        {
            return base.Query(model, query)
                .WhereIf(!string.IsNullOrEmpty(model.Query.Name), o => o.Name.Contains(model.Query.Name))
                .WhereIf(!string.IsNullOrEmpty(model.Query.Number), o => o.Number.Contains(model.Query.Number));
        }

        public override void ToDisplayModel(Organ entity, EditOrganModel model)
        {
            model.Nodes = entity.OrganNodes.Select(o => o.NodeId).ToList();
            entity.OrganNodes.ForEach(o => ViewData.Add(o.NodeId, o.Node.Name));
            if (entity.AreaId.HasValue)
            {
                ViewData.Add(entity.AreaId.Value, entity.Area.Name);
            }
            if (entity.ParentId.HasValue)
            {
                ViewData.Add(entity.ParentId.Value, entity.Parent.Name);
            }
        }

        public override void ToEditModel(Organ entity, EditOrganModel model)
        {
            if (entity != null)
            {
                model.Nodes = entity.OrganNodes.Select(o => o.NodeId).ToList();
            }
            this.ViewData.MultiSelectList(o => model.Nodes, () => this._ajax.GetNodeMultiSelectList(model.Nodes));
            this.ViewData.SelectList(o => model.AreaId, () => this._ajax.GetAreaSelectList(model.AreaId));
            this.ViewData.SelectList(o => model.ParentId, () => this._ajax.GetOrganSelectList(model.ParentId));
        }

        public override void ToEntity(EditOrganModel model, Organ entity)
        {
            foreach (var id in entity.OrganNodes.Select(o => o.NodeId).ToList())
            {
                if (!model.Nodes.Any(o => o == id))
                {
                    entity.OrganNodes.RemoveAll(o => o.NodeId == id);
                }
            }
            foreach (var id in model.Nodes)
            {
                if (!entity.OrganNodes.Any(o => o.NodeId == id))
                {
                    entity.OrganNodes.Add(new OrganNode { NodeId = id });
                }
            }
        }
        public override IActionResult Edit(EditOrganModel model)
        {
            var id = model.Id;
            var query = this.Repo.Table();
            query = this.Include(query);
            var entity = query.FirstOrDefault(o => o.Id == id);
            if (ModelState.IsValid)
            {
                try
                {
                    if (model.ParentId != null)
                    {
                        if (model.ParentId == model.Id)
                        {
                            throw new Exception("上级节点不能是当前节点");
                        }
                        var parent = this.Repo.Table().ToList().FirstOrDefault(o => o.Id == model.ParentId);
                        while (parent.ParentId.HasValue)
                        {
                            if (parent.ParentId == model.Id)
                            {
                                throw new Exception("上级节点不能是当前节点的下级节点");
                            }
                            else
                            {
                                parent = parent.Parent;
                            }
                        }
                    }
                    entity.From(model, skipReadonly: true);
                    this.ToEntity(model, entity);
                    this.Repo.SaveChanges();
                    return this.Success();
                }
                catch (Exception ex)
                {
                    ex.PrintStack();
                    ModelState.AddModelError("", ex.Message);
                }
            }
            this.ToEditModel(entity, model);
            return Result(model);
        }

    }
}