using ConstructionFirmDataModels.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Subd_4.BindingModels;
using Subd_4.ViewModels;

namespace ConstructionFirmDatabaseImplement.Models
{
    public class Project : IProjectModel
    {
        public int Id { get; set; }

        [Required]
        public string ClientName { get; set; } = string.Empty;

        [Required]
        public string ObjectType { get; set; } = string.Empty;

        [Required]
        public string LocationP { get; set; } = string.Empty;

        [Required]
        public int Budget { get; set; }

        [Required]
        public DateTime DeadLine { get; set; }

        [Required]
        public ConstructionFirmDataModels.Enum.TaskStatus Status { get; set; }

        [Required]
        public double FullPrice { get; set; }

        public int CliendId { get; set; }

        public int EmployeeId { get; set; }

        private Dictionary<int, (IConstructionMaterialModel, int)> _constructionMaterialProject = null;

        [NotMapped]
        public Dictionary<int, (IConstructionMaterialModel, int)> ConstructionMaterialProjects
        {
            get
            {
                if (_constructionMaterialProject == null)
                {
                    _constructionMaterialProject = MaterialProjects.ToDictionary(recTM => recTM.ConstructionMaterialId, recTM => (recTM.ConstructionMaterial as IConstructionMaterialModel, recTM.Count));
                }
                return _constructionMaterialProject;
            }
        }

        private Dictionary<int, (ITeamModel, int)> _teamProject { get; set; } = null;

        [NotMapped]
        public Dictionary<int, (ITeamModel, int)> TeamProject
        {
            get
            {
                if (_teamProject == null)
                {
                    _teamProject = ProjectTeams.ToDictionary(recTM => recTM.TeamId, recTM => (recTM.Team as ITeamModel, recTM.CountTeam));
                }
                return _teamProject;
            }
        }

        [ForeignKey("ProjectId")]
        public virtual List<ConstructionMaterialProject> MaterialProjects { get; set; } = new();

        [ForeignKey("ProjectId")]
        public virtual List<ProjectTeam> ProjectTeams { get; set; } = new();

        public static Project Create(ConstructionFirmDatabase context, ProjectBindingModel model)
        {
            return new Project()
            {
                Id = model.Id,
                ClientName = model.ClientName,
                ObjectType = model.ObjectType,
                LocationP = model.LocationP,
                Budget = model.Budget,
                DeadLine = model.DeadLine,
                Status = model.Status,
                CliendId = model.CliendId,
                EmployeeId = model.EmployeeId,
                MaterialProjects = model.ConstructionMaterialProjects.Select(x => new ConstructionMaterialProject
                {
                    ConstructionMaterial = context.ConstructionMaterials.First(y => y.Id == x.Key),
                    Count = x.Value.Item2
                }).ToList(),
                ProjectTeams = model.TeamProject.Select(x => new ProjectTeam
                {
                    Team = context.Teams.First(y => y.Id == x.Key),
                    CountTeam = x.Value.Item2
                }).ToList(),
            };
        }

        public void Update(ProjectBindingModel model)
        {
            Status = model.Status;
        }

        public ProjectViewModel GetViewModel => new()
        {
            Id = Id,
            ClientName = ClientName,
            ObjectType = ObjectType,
            LocationP = LocationP,
            Budget = Budget,
            DeadLine = DeadLine,
            Status = Status,
            CliendId = CliendId,
            EmployeeId = EmployeeId,
            ConstructionMaterialProjects = ConstructionMaterialProjects,
            TeamProject = TeamProject
        };

        public void UpdateConstructionMaterials(ConstructionFirmDatabase context, ProjectBindingModel model)
        {
            var taskMenus = context.ConstructionMaterialProjects.Where(rec => rec.ProjectId == model.Id).ToList();
            if (taskMenus != null && taskMenus.Count > 0)
            {
                context.ConstructionMaterialProjects.RemoveRange(taskMenus.Where(rec => !model.ConstructionMaterialProjects.ContainsKey(rec.ConstructionMaterialId)));
                context.SaveChanges();

                foreach (var updateMenu in taskMenus)
                {
                    updateMenu.Count = model.ConstructionMaterialProjects[updateMenu.ConstructionMaterialId].Item2;
                    model.ConstructionMaterialProjects.Remove(updateMenu.ConstructionMaterialId);
                }
                context.SaveChanges();
            }

            var task = context.Projects.First(x => x.Id == Id);
            foreach (var rc in model.ConstructionMaterialProjects)
            {
                context.ConstructionMaterialProjects.Add(new ConstructionMaterialProject
                {
                    Project = task,
                    ConstructionMaterial = context.ConstructionMaterials.First(x => x.Id == rc.Key),
                    Count = rc.Value.Item2
                });
                context.SaveChanges();
            }
            _constructionMaterialProject = null;
        }

        public void UpdateTeams(ConstructionFirmDatabase context, ProjectBindingModel model)
        {
            var taskTeams = context.ProjectTeams.Where(rec => rec.ProjectId == model.Id).ToList();
            if (taskTeams != null && taskTeams.Count > 0)
            {
                context.ProjectTeams.RemoveRange(taskTeams.Where(rec => !model.TeamProject.ContainsKey(rec.TeamId)));
                context.SaveChanges();

                foreach (var updateTeam in taskTeams)
                {
                    updateTeam.CountTeam = model.TeamProject[updateTeam.TeamId].Item2;
                    model.TeamProject.Remove(updateTeam.TeamId);
                }
                context.SaveChanges();
            }

            var task = context.Projects.First(x => x.Id == Id);
            foreach (var rc in model.TeamProject)
            {
                context.ProjectTeams.Add(new ProjectTeam
                {
                    Project = task,
                    Team = context.Teams.First(x => x.Id == rc.Key),
                    CountTeam = rc.Value.Item2
                });
                context.SaveChanges();
            }
            _constructionMaterialProject = null;
        }
    }
}