using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using ZhonTai.Admin.Core.Attributes;
using ZhonTai.Admin.Core.Dto;
using ZhonTai.Admin.Domain.Api;
using ZhonTai.Admin.Services.Api.Dto;
using ZhonTai.Admin.Domain.Api.Dto;
using ZhonTai.DynamicApi;
using ZhonTai.DynamicApi.Attributes;

namespace ZhonTai.Admin.Services.Api
{
    /// <summary>
    /// 接口服务
    /// </summary>
    [DynamicApi(Area = "admin")]
    public class ApiService : BaseService, IApiService, IDynamicApi
    {
        private readonly IApiRepository _apiRepository;

        public ApiService(IApiRepository moduleRepository)
        {
            _apiRepository = moduleRepository;
        }

        /// <summary>
        /// 查询接口
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public async Task<IResultOutput> GetAsync(long id)
        {
            var result = await _apiRepository.GetAsync<ApiGetOutput>(id);
            return ResultOutput.Ok(result);
        }

        /// <summary>
        /// 查询列表
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<IResultOutput> GetListAsync(string key)
        {
            var data = await _apiRepository
                .WhereIf(key.NotNull(), a => a.Path.Contains(key) || a.Label.Contains(key))
                .ToListAsync<ApiListOutput>();

            return ResultOutput.Ok(data);
        }

        /// <summary>
        /// 查询分页
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        [HttpPost]
        public async Task<IResultOutput> GetPageAsync(PageInput<ApiGetPageDto> input)
        {
            var key = input.Filter?.Label;

            var list = await _apiRepository.Select
            .WhereDynamicFilter(input.DynamicFilter)
            .WhereIf(key.NotNull(), a => a.Path.Contains(key) || a.Label.Contains(key))
            .Count(out var total)
            .OrderByDescending(true, c => c.Id)
            .Page(input.CurrentPage, input.PageSize)
            .ToListAsync();

            var data = new PageOutput<ApiEntity>()
            {
                List = list,
                Total = total
            };

            return ResultOutput.Ok(data);
        }

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<IResultOutput> AddAsync(ApiAddInput input)
        {
            var entity = Mapper.Map<ApiEntity>(input);
            var id = (await _apiRepository.InsertAsync(entity)).Id;

            return ResultOutput.Result(id > 0);
        }

        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task<IResultOutput> UpdateAsync(ApiUpdateInput input)
        {
            if (!(input?.Id > 0))
            {
                return ResultOutput.NotOk();
            }

            var entity = await _apiRepository.GetAsync(input.Id);
            if (!(entity?.Id > 0))
            {
                return ResultOutput.NotOk("接口不存在！");
            }

            Mapper.Map(input, entity);
            await _apiRepository.UpdateAsync(entity);
            return ResultOutput.Ok();
        }

        /// <summary>
        /// 彻底删除
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public async Task<IResultOutput> DeleteAsync(long id)
        {
            var result = false;
            if (id > 0)
            {
                result = (await _apiRepository.DeleteAsync(m => m.Id == id)) > 0;
            }

            return ResultOutput.Result(result);
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        [HttpDelete]
        public async Task<IResultOutput> SoftDeleteAsync(long id)
        {
            var result = await _apiRepository.SoftDeleteAsync(id);
            return ResultOutput.Result(result);
        }

        /// <summary>
        /// 批量删除
        /// </summary>
        /// <param name="ids"></param>
        /// <returns></returns>
        public async Task<IResultOutput> BatchSoftDeleteAsync(long[] ids)
        {
            var result = await _apiRepository.SoftDeleteAsync(ids);

            return ResultOutput.Result(result);
        }

        /// <summary>
        /// 同步
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        [Transaction]
        public async Task<IResultOutput> SyncAsync(ApiSyncInput input)
        {
            //查询所有api
            var apis = await _apiRepository.Select.ToListAsync();
            var paths = apis.Select(a => a.Path).ToList();

            //path处理
            foreach (var api in input.Apis)
            {
                api.Path = api.Path?.Trim().ToLower();
                api.ParentPath = api.ParentPath?.Trim().ToLower();
            }

            #region 执行插入

            //执行父级api插入
            var parentApis = input.Apis.FindAll(a => a.ParentPath.IsNull());
            var pApis = (from a in parentApis where !paths.Contains(a.Path) select a).ToList();
            if (pApis.Count > 0)
            {
                var insertPApis = Mapper.Map<List<ApiEntity>>(pApis);
                insertPApis = await _apiRepository.InsertAsync(insertPApis);
                apis.AddRange(insertPApis);
            }

            //执行子级api插入
            var childApis = input.Apis.FindAll(a => a.ParentPath.NotNull());
            var cApis = (from a in childApis where !paths.Contains(a.Path) select a).ToList();
            if (cApis.Count > 0)
            {
                var insertCApis = Mapper.Map<List<ApiEntity>>(cApis);
                insertCApis = await _apiRepository.InsertAsync(insertCApis);
                apis.AddRange(insertCApis);
            }

            #endregion 执行插入

            #region 修改和禁用

            {
                //api修改
                ApiEntity a;
                List<string> labels;
                string label;
                string desc;
                foreach (var api in parentApis)
                {
                    a = apis.Find(a => a.Path == api.Path);
                    if (a?.Id > 0)
                    {
                        labels = api.Label?.Split("\r\n")?.ToList();
                        label = labels != null && labels.Count > 0 ? labels[0] : string.Empty;
                        desc = labels != null && labels.Count > 1 ? string.Join("\r\n", labels.GetRange(1, labels.Count() - 1)) : string.Empty;
                        a.ParentId = 0;
                        a.Label = label;
                        a.Description = desc;
                        a.Enabled = true;
                    }
                }
            }

            {
                //api修改
                ApiEntity a;
                ApiEntity pa;
                List<string> labels;
                string label;
                string desc;
                foreach (var api in childApis)
                {
                    a = apis.Find(a => a.Path == api.Path);
                    pa = apis.Find(a => a.Path == api.ParentPath);
                    if (a?.Id > 0)
                    {
                        labels = api.Label?.Split("\r\n")?.ToList();
                        label = labels != null && labels.Count > 0 ? labels[0] : string.Empty;
                        desc = labels != null && labels.Count > 1 ? string.Join("\r\n", labels.GetRange(1, labels.Count() - 1)) : string.Empty;

                        a.ParentId = pa.Id;
                        a.Label = label;
                        a.Description = desc;
                        a.HttpMethods = api.HttpMethods;
                        a.Enabled = true;
                    }
                }
            }

            {
                //api禁用
                var inputPaths = input.Apis.Select(a => a.Path).ToList();
                var disabledApis = (from a in apis where !inputPaths.Contains(a.Path) select a).ToList();
                if (disabledApis.Count > 0)
                {
                    foreach (var api in disabledApis)
                    {
                        api.Enabled = false;
                    }
                }
            }

            #endregion 修改和禁用

            //批量更新
            await _apiRepository.UpdateDiy.SetSource(apis)
            .UpdateColumns(a => new { a.ParentId, a.Label, a.HttpMethods, a.Description, a.Enabled })
            .ExecuteAffrowsAsync();

            return ResultOutput.Ok();
        }
    }
}