using System;
using AGSS.Models.Entities;
using AGSS.Models.Template;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using System.Linq;
using System.Threading.Tasks;
using AGSS.DbSet;

namespace AGSS.Controllers.Admin
{
  
    [Route("api/v1/[controller]/[action]")]
    public class AdminDictionaryController : ControllerBase
    {
        private readonly ApplicationDbContext _dbContext;
        private readonly UserManager<UserModel> _userManager;

        public AdminDictionaryController(ApplicationDbContext dbContext, UserManager<UserModel> userManager)
        {
            _dbContext = dbContext;
            _userManager = userManager;
        }

        [HttpPost]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> GetParentDictionaries([FromBody] string label)
        {
          

            // 确保 label 不是 null
            label ??= string.Empty;

            var parentDictionaries = _dbContext.Dictionaries.Where(d => d.ParentId == null && (string.IsNullOrEmpty(label) || d.Label.Contains(label))).ToList();
            return Ok(new ReturnTemplate(200, "查询成功", parentDictionaries));
        }

        [HttpPost]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> AddParentDictionary([FromBody] DictionaryModel dictionary)
        {
           

            if (dictionary == null || string.IsNullOrWhiteSpace(dictionary.Label) || string.IsNullOrWhiteSpace(dictionary.Value))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Label和Value", null));
            }

            dictionary.Uuid = Guid.NewGuid().ToString();
            dictionary.CreateTime = DateTime.UtcNow;
            dictionary.CreateUserId = _userManager.GetUserId(User);

            _dbContext.Dictionaries.Add(dictionary);
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "添加父级字典成功", dictionary));
        }

        [HttpPut]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> UpdateParentDictionary([FromBody] DictionaryModel dictionary)
        {
          

            if (dictionary == null || string.IsNullOrWhiteSpace(dictionary.Uuid) || string.IsNullOrWhiteSpace(dictionary.Label))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Uuid和Label", null));
            }

            var existingDictionary = _dbContext.Dictionaries.FirstOrDefault(d => d.Uuid == dictionary.Uuid && d.ParentId == null);
            if (existingDictionary == null)
            {
                return Ok(new ReturnTemplate(404, "未找到指定的父级字典", null));
            }

            existingDictionary.Label = dictionary.Label;
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "更新父级字典成功", existingDictionary));
        }

        [HttpDelete]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> DeleteParentDictionary([FromBody] string uuid)
        {
         

            if (string.IsNullOrWhiteSpace(uuid))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Uuid", null));
            }

            var parentDictionary = _dbContext.Dictionaries.FirstOrDefault(d => d.Uuid == uuid && d.ParentId == null);
            if (parentDictionary == null)
            {
                return Ok(new ReturnTemplate(404, "未找到指定的父级字典", null));
            }

            _dbContext.Dictionaries.RemoveRange(_dbContext.Dictionaries.Where(d => d.ParentId == uuid));
            _dbContext.Dictionaries.Remove(parentDictionary);
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "删除父级字典成功", null));
        }

        [HttpPost]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> CreateChildDictionary([FromBody] DictionaryModel dictionary)
        {
         

            if (dictionary == null || string.IsNullOrWhiteSpace(dictionary.ParentId) || string.IsNullOrWhiteSpace(dictionary.ParentValue) || string.IsNullOrWhiteSpace(dictionary.Label) || string.IsNullOrWhiteSpace(dictionary.Value))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供ParentId、ParentValue、Label和Value", null));
            }

            dictionary.Uuid = Guid.NewGuid().ToString();
            dictionary.CreateTime = DateTime.UtcNow;
            dictionary.CreateUserId = _userManager.GetUserId(User);

            _dbContext.Dictionaries.Add(dictionary);
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "创建子级字典成功", dictionary));
        }

        [HttpPut]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> UpdateChildDictionary([FromBody] DictionaryModel dictionary)
        {
           

            if (dictionary == null || string.IsNullOrWhiteSpace(dictionary.Uuid) || string.IsNullOrWhiteSpace(dictionary.Label) || string.IsNullOrWhiteSpace(dictionary.Value))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Uuid、Label和Value", null));
            }

            var existingDictionary = _dbContext.Dictionaries.FirstOrDefault(d => d.Uuid == dictionary.Uuid && d.ParentId != null);
            if (existingDictionary == null)
            {
                return Ok(new ReturnTemplate(404, "未找到指定的子级字典", null));
            }

            existingDictionary.Label = dictionary.Label;
            existingDictionary.LabelEn = dictionary.LabelEn;
            existingDictionary.Remark = dictionary.Remark;
            existingDictionary.Value = dictionary.Value;
            existingDictionary.Tag = dictionary.Tag;
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "更新子级字典成功", existingDictionary));
        }

        [HttpDelete]
        [Authorize(Roles = "Admin")]
        public async Task<IActionResult> DeleteChildDictionary([FromBody] string uuid)
        {
          
            if (string.IsNullOrWhiteSpace(uuid))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Uuid", null));
            }

            var childDictionary = _dbContext.Dictionaries.FirstOrDefault(d => d.Uuid == uuid && d.ParentId != null);
            if (childDictionary == null)
            {
                return Ok(new ReturnTemplate(404, "未找到指定的子级字典", null));
            }

            _dbContext.Dictionaries.Remove(childDictionary);
            await _dbContext.SaveChangesAsync();

            return Ok(new ReturnTemplate(200, "删除子级字典成功", null));
        }

        [HttpGet]
        public IActionResult GetChildDictionaries([FromBody] ChildDictionaryRequest request)
        {
            if (string.IsNullOrWhiteSpace(request.Value))
            {
                return Ok(new ReturnTemplate(400, "请求参数无效，请提供Value", null));
            }

            var childDictionaries = _dbContext.Dictionaries
                .Where(d => d.ParentValue == request.Value && 
                            (request.Tag == null || (!string.IsNullOrEmpty(d.Tag) && d.Tag.Contains("," + request.Tag + ","))))
                .ToList();

            if (request.Tag != null)
            {
                childDictionaries = childDictionaries.Where(d => !string.IsNullOrEmpty(d.Tag)).ToList();
            }

            return Ok(new ReturnTemplate(200, "查询成功", childDictionaries));
        }
        public class ChildDictionaryRequest
        {
            public string Value { get; set; }
            public string Tag { get; set; }
        }
    }
}