//InMemoryDatabase.cs
using Dul.Data;
using System;
using System.Collections.Generic;
using System.Linq;

namespace InMemoryDatabase
{
    class InMemoryDatabase
    {
        //리포지토리 클래스 참조
        static CategoryRepositoryInMemory _category;

        #region Print
        ///<summary>
        ///[0] 카테고리 출력 공통 메서드
        ///</summary>
        ///<param name="categories">카테고리 리스트</param>
        private static void PrintCategories(List<Category> categories)
        {
            foreach (var category in categories)
            {
                Console.WriteLine($"{category.CategoryId} - {category.CategoryName}");
            }
            Console.WriteLine();
        }
        #endregion

        #region Has
        ///<summary>
        ///① 건수
        ///</summary>
        private static void HasCategory()
        {
            if (_category.Has() > 0)
            {
                Console.WriteLine("기본 데이터가 있습니다.");
            }
            else
            {
                Console.WriteLine("기본 데이터가 없습니다.");
            }
            Console.WriteLine();
        }
        #endregion

        #region Read
        ///<summary>
        ///② 출력
        ///</summary>
        private static void ReadCategories()
        {
            var categories = _category.Read();
            PrintCategories(categories);
        }
        #endregion

        #region Add
        ///<summary>
        ///③ 입력
        ///</summary>
        private static void AddCategory()
        {
            var category = new Category() { CategoryName = "생활용품" };
            _category.Add(category);
            ReadCategories();
        }
        #endregion

        #region Browse
        ///<summary>
        ///④ 상세
        ///</summary>
        private static void BrowseCategory()
        {
            int categoryId = 4;
            var category = _category.Browse(categoryId);
            if (category != null)
            {
                Console.WriteLine($"{category.CategoryId} - {category.CategoryName}");
            }
            else
            {
                Console.WriteLine($"{categoryId}번 카테고리가 없습니다.");
            }
            Console.WriteLine();
        }
        #endregion

        #region Edit
        ///<summary>
        ///⑤ 수정
        ///</summary>
        private static void EditCategory()
        {
            _category.Edit(new Category { CategoryId = 4, CategoryName = "가전용품" });
            ReadCategories();
        }
        #endregion

        #region Delete
        ///<summary>
        ///⑥ 삭제
        ///</summary>
        private static void DeleteCategory()
        {
            int categoryId = 1;
            _category.Delete(categoryId);
            Console.WriteLine($"{categoryId}번 데이터를 삭제합니다.");
            ReadCategories();
        }
        #endregion

        #region Search
        ///<summary>
        ///⑦ 검색
        ///</summary>
        private static void SearchCategories()
        {
            var query = "강의";
            var categories = _category.Search(query);
            PrintCategories(categories);
        }
        #endregion

        #region Paging
        ///<summary>
        ///⑧ 페이징
        ///</summary>
        private static void PagingCategories()
        {
            var categories = _category.Paging(2, 2);
            if (categories.Count > 1)
            {
                categories.RemoveAt(0); //0번째 인덱스 항목 지우기
            }
            PrintCategories(categories);
        }
        #endregion

        #region Ordering
        ///<summary>
        ///⑨ 정렬
        ///</summary>
        private static void OrderingCategories()
            {
            var categories = _category.Ordering(OrderOption.Descending);
            PrintCategories(categories.ToList());
        }
        #endregion

        static void Main(string[] args)
        {
            _category = new CategoryRepositoryInMemory();

            Console.WriteLine("[1] 기본값이 있는지 확인 : ");
            HasCategory();

            Console.WriteLine("[2] 기본 데이터 출력 : ");
            ReadCategories();

            Console.WriteLine("[3] 데이터 입력 : ");
            AddCategory();

            Console.WriteLine("[4] 상세 보기 : ");
            BrowseCategory();

            Console.WriteLine("[5] 데이터 수정 : ");
            EditCategory();

            Console.WriteLine("[6] 데이터 삭제 : ");
            DeleteCategory();

            Console.WriteLine("[7] 데이터 검색 : ");
            SearchCategories();

            Console.WriteLine("[8] 페이징 : ");
            PagingCategories();

            Console.WriteLine("[9] 정렬 : ");
            OrderingCategories();
        }
    }
}