using Kean.Application.Command.ViewModels;
using Kean.Application.Query.ViewModels;
using Kean.Domain;
using Kean.Domain.Basic.Models;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Kean.Presentation.Rest.Controllers
{
    /// <summary>
    /// Item服务
    /// </summary>
    [ApiController, Route("api/items")]
    public class ItemsController : ControllerBase
    {
        private readonly Application.Command.Interfaces.IBasicService _basicCommandService; // 基础信息命令服务
        private readonly Application.Query.Interfaces.IBasicService _basicQueryService; // 基础信息查询服务

        /// <summary>
        /// 依赖注入
        /// </summary>
        public ItemsController(
            Application.Command.Interfaces.IBasicService basicCommandService,
            Application.Query.Interfaces.IBasicService basicQueryService)
        {
            _basicCommandService = basicCommandService;
            _basicQueryService = basicQueryService;
        }

        /// <summary>
        /// 获取item列表
        /// </summary>
        /// <response code="200">成功</response>
        [HttpGet]
        [ProducesResponseType(200)]
        public async Task<IActionResult> GetList(
            [FromQuery] string name,
            [FromQuery] string sort,
            [FromQuery] int? offset,
            [FromQuery] int? limit)
        {
            var items = await _basicQueryService.GetItemList(name, sort, offset, limit);
            if (offset.HasValue || limit.HasValue)
            {
                var total = await _basicQueryService.GetItemCount(name);
                return StatusCode(200, new { items, total });
            }
            else
            {
                return StatusCode(200, new { items, total = items.Count() });
            }
        }

        /// <summary>
        /// 创建Item
        /// </summary>
        /// <response code="201">成功</response>
        /// <response code="409">信息已存在</response>
        /// <response code="410">信息已删除</response>
        /// <response code="422">请求内容错误</response>
        [HttpPost]
        [ProducesResponseType(201)]
        [ProducesResponseType(409)]
        [ProducesResponseType(410)]
        [ProducesResponseType(422)]
        public async Task<IActionResult> CreateItem(Kean.Application.Command.ViewModels.Item item)
        {
            var result = await _basicCommandService.CreateItem(item);
            return result switch
            {
                { Id: > 0 } => StatusCode(201, result.Id),
                { Failure.ErrorCode: nameof(ErrorCode.Conflict) } => StatusCode(409, result.Failure),
                { Failure.ErrorCode: nameof(ErrorCode.Gone) } => StatusCode(410, result.Failure),
                _ => StatusCode(422, result.Failure)
            };
        }

        /// <summary>
        /// 修改Item
        /// </summary>
        /// <response code="200">成功</response>
        /// <response code="409">信息已存在</response>
        /// <response code="410">信息已删除</response>
        /// <response code="422">请求内容错误</response>
        [HttpPut("{code}")]
        [ProducesResponseType(200)]
        [ProducesResponseType(409)]
        [ProducesResponseType(410)]
        [ProducesResponseType(422)]
        public async Task<IActionResult> ModifyItem(string code, Kean.Application.Command.ViewModels.Item item)
        {
            item.ItemName = code;
            var result = await _basicCommandService.ModifyItem(item);
            return result switch
            {
                { Success: true } => StatusCode(200),
                { Failure.ErrorCode: nameof(ErrorCode.Conflict) } => StatusCode(409, result.Failure),
                { Failure.ErrorCode: nameof(ErrorCode.Gone) } => StatusCode(410, result.Failure),
                _ => StatusCode(422, result.Failure)
            };
        }

        /// <summary>
        /// 批量处理物料
        /// </summary>
        /// <response code="200">成功</response>
        /// <response code="405">方法不支持</response>
        [HttpPost("batch")]
        [ProducesResponseType(200)]
        [ProducesResponseType(405)]
        public async Task<IActionResult> BatchItem(Batch<string> batch)
        {
            return batch.Method switch
            {
                BatchMethod.Delete => StatusCode(200, await _basicCommandService.DeleteItem(batch.Data)),
                _ => StatusCode(405)
            };
        }

    }
}