PostgraduateGuidanceService.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using ScientificReport.BLL.Interfaces;
using ScientificReport.BLL.Utils;
using ScientificReport.DAL.DbContext;
using ScientificReport.DAL.Entities;
using ScientificReport.DAL.Repositories;
using ScientificReport.DTO.Models.PostgraduateGuidance;

namespace ScientificReport.BLL.Services
{
    public class PostgraduateGuidanceService : IPostgraduateGuidanceService
    {
        private readonly PostgraduateGuidanceRepository _postgraduateGuidanceRepository;
        private readonly DepartmentRepository _departmentRepository;
        private readonly UserProfileRepository _userProfileRepository;

        public PostgraduateGuidanceService(ScientificReportDbContext context)
        {
            _postgraduateGuidanceRepository = new PostgraduateGuidanceRepository(context);
            _departmentRepository = new DepartmentRepository(context);
            _userProfileRepository = new UserProfileRepository(context);
        }

        public virtual IEnumerable<PostgraduateGuidance> GetAll()
        {
            return _postgraduateGuidanceRepository.All();
        }

        public virtual IEnumerable<PostgraduateGuidance> GetAllWhere(Func<PostgraduateGuidance, bool> predicate)
        {
            return GetAll().Where(predicate);
        }

        public virtual IEnumerable<PostgraduateGuidance> GetItemsByRole(ClaimsPrincipal userClaims)
        {
            IEnumerable<PostgraduateGuidance> items;
            if (UserHelpers.IsAdmin(userClaims))
            {
                items = _postgraduateGuidanceRepository.All();
            }
            else if (UserHelpers.IsHeadOfDepartment(userClaims))
            {
                var department = _departmentRepository.Get(r => r.Head.UserName == userClaims.Identity.Name);
                items = _postgraduateGuidanceRepository.AllWhere(m => department.Staff.Contains(m.Guide));
            }
            else
            {
                var user = _userProfileRepository.Get(u => u.UserName == userClaims.Identity.Name);
                items = _postgraduateGuidanceRepository.AllWhere(m => m.Guide.Id == user.Id);
            }

            return items;
        }

        public virtual IEnumerable<PostgraduateGuidance> GetPageByRole(int page, int count, ClaimsPrincipal userClaims)
        {
            return GetItemsByRole(userClaims).Skip((page - 1) * count).Take(count).ToList();
        }

        public virtual int GetCountByRole(ClaimsPrincipal userClaims)
        {
            return GetItemsByRole(userClaims).Count();
        }

        public virtual PostgraduateGuidance GetById(Guid id)
        {
            return _postgraduateGuidanceRepository.Get(id);
        }

        public virtual PostgraduateGuidance Get(Func<PostgraduateGuidance, bool> predicate)
        {
            return _postgraduateGuidanceRepository.Get(predicate);
        }

        public virtual void CreateItem(PostgraduateGuidanceModel model)
        {
            _postgraduateGuidanceRepository.Create(new PostgraduateGuidance
            {
                Guide = model.Guide,
                PostgraduateInfo = model.PostgraduateInfo,
                PostgraduateName = model.PostgraduateName
            });
        }

        public virtual void UpdateItem(PostgraduateGuidanceEditModel model)
        {
            var postgraduateGuidance = GetById(model.Id);
            if (postgraduateGuidance == null)
            {
                return;
            }

            postgraduateGuidance.Guide = model.Guide;
            postgraduateGuidance.PostgraduateInfo = model.PostgraduateInfo;
            postgraduateGuidance.PostgraduateName = model.PostgraduateName;
            _postgraduateGuidanceRepository.Update(postgraduateGuidance);
        }

        public virtual void DeleteById(Guid id)
        {
            _postgraduateGuidanceRepository.Delete(id);
        }

        public virtual bool Exists(Guid id)
        {
            return _postgraduateGuidanceRepository.Get(id) != null;
        }
    }
}