using System.Collections.Generic;
using System.Threading.Tasks;
using AdminApplication.DTOs;
using AdminDomain.Customer;
using AdminDomain.Customer.Param;
using Common;
using CommonInfrastructure;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;

namespace AdminApi.Customer
{
    [ApiController]
    [Route("adminapi/[controller]")]
    [Authorize]
    public class CustomerController : BaseController
    {
        private readonly ICustomerService _customerService;

        public CustomerController(ICustomerService customerService)
        {
            _customerService = customerService;
        }

        /// <summary>
        /// 获取客服列表
        /// </summary>
        [HttpGet("list")]
        public async Task<PageResponse<CustomerDto>> GetCustomerList([FromQuery] GetCustomerListParam param)
        {
            var result = await _customerService.GetCustomerList(param);
            var dtos = MapToCustomerDtos(result.customers);
            return this.ToPageResult(dtos, result.total);
        }

        /// <summary>
        /// 根据ID获取客服详情
        /// </summary>
        [HttpGet("{id}")]
        public async Task<BaseResponse<CustomerDto>> GetCustomerById(string id)
        {
            var result = await _customerService.GetCustomerById(id);
            var dto = MapToCustomerDto(result.customer);
            return this.ToResult(dto);
        }

        /// <summary>
        /// 添加新客服
        /// </summary>
        [HttpPost]
        public async Task<BaseResponse<CustomerDto>> AddCustomer([FromBody] AddCustomerParam param)
        {
            var result = await _customerService.AddCustomer(param);
            if (result.isOk)
            {
                var dto = MapToCustomerDto(result.customer);
                return this.ToResult(dto);
            }
            else
            {
                return this.ToFailResult<CustomerDto>(result.msg);
            }
        }

        /// <summary>
        /// 更新客服信息
        /// </summary>
        [HttpPut]
        public async Task<BaseResponse<string>> UpdateCustomer([FromBody] UpdateCustomerParam param)
        {
            var result = await _customerService.UpdateCustomer(param);
            if (result.isOk)
            {
                return this.ToResult(result.msg);
            }
            else
            {
                return this.ToFailResult<string>(result.msg);
            }
        }

        /// <summary>
        /// 删除客服
        /// </summary>
        [HttpDelete("{id}")]
        public async Task<BaseResponse<string>> DeleteCustomer(string id)
        {
            var result = await _customerService.DeleteCustomer(id);
            if (result.isOk)
            {
                return this.ToResult(result.msg);
            }
            else
            {
                return this.ToFailResult<string>(result.msg);
            }
        }

        /// <summary>
        /// 获取会话列表
        /// </summary>
        [HttpGet("conversations")]
        public async Task<PageResponse<ConversationDto>> GetConversationList([FromQuery] GetConversationListParam param)
        {
            var result = await _customerService.GetConversationList(param);
            var dtos = MapToConversationDtos(result.conversations);
            return this.ToPageResult(dtos, result.total);
        }

        /// <summary>
        /// 根据ID获取会话详情
        /// </summary>
        [HttpGet("conversation/{id}")]
        public async Task<BaseResponse<ConversationDto>> GetConversationById(string id)
        {
            var result = await _customerService.GetConversationById(id);
            var dto = MapToConversationDto(result.conversation);
            return this.ToResult(dto);
        }

        /// <summary>
        /// 删除会话及全部关联聊天记录。
        /// </summary>
        [HttpDelete("conversation/{id}")]
        public async Task<BaseResponse<string>> DeleteConversation(string id)
        {
            var result = await _customerService.DeleteConversation(id);
            return result.isOk
                ? this.ToResult(result.msg)
                : this.ToFailResult<string>(result.msg);
        }

        /// <summary>
        /// 获取会话聊天记录
        /// </summary>
        [HttpGet("chatlog/{conversationId}")]
        public async Task<BaseResponse<List<MessageDto>>> GetChatLog(string conversationId)
        {
            var result = await _customerService.GetChatLog(conversationId);
            if (result.isOk)
            {
                var dtos = MapToMessageDtos(result.messages);
                return this.ToResult(dtos);
            }
            else
            {
                return this.ToFailResult<List<MessageDto>>(result.msg);
            }
        }

        /// <summary>
        /// 删除单条消息
        /// </summary>
        [HttpDelete("message/{id}")]
        public async Task<BaseResponse<string>> DeleteMessage(string id)
        {
            var result = await _customerService.DeleteMessage(id);
            if (result.isOk)
            {
                return this.ToResult(result.msg);
            }
            else
            {
                return this.ToFailResult<string>(result.msg);
            }
        }

        /// <summary>
        /// 删除会话所有消息
        /// </summary>
        [HttpDelete("messages/{conversationId}")]
        public async Task<BaseResponse<string>> DeleteAllMessages(string conversationId)
        {
            var result = await _customerService.DeleteAllMessages(conversationId);
            if (result.isOk)
            {
                return this.ToResult(result.msg);
            }
            else
            {
                return this.ToFailResult<string>(result.msg);
            }
        }

        /// <summary>
        /// 批量删除消息
        /// </summary>
        [HttpPost("messages/delete-batch")]
        public async Task<BaseResponse<string>> DeleteMessagesBatch([FromBody] DeleteMessagesBatchRequest param)
        {
            var result = await _customerService.DeleteMessagesBatch(param.Ids);
            if (result.isOk)
            {
                return this.ToResult(result.msg);
            }
            else
            {
                return this.ToFailResult<string>(result.msg);
            }
        }

        private static CustomerDto MapToCustomerDto(CustomerService.Domain.Entity.CustomerEntity? entity)
        {
            if (entity == null) return null!;
            return new CustomerDto
            {
                Id = entity.Id,
                UserId = entity.UserId,
                UserName = entity.UserName,
                Status = entity.Status,
                Avatar = entity.Avatar,
                CreateTime = entity.CreateTime
            };
        }

        private static List<CustomerDto> MapToCustomerDtos(IEnumerable<CustomerService.Domain.Entity.CustomerEntity> entities)
        {
            var dtos = new List<CustomerDto>();
            foreach (var entity in entities)
            {
                dtos.Add(MapToCustomerDto(entity));
            }
            return dtos;
        }

        private static ConversationDto MapToConversationDto(CustomerService.Domain.Entity.ConversationEntity? entity)
        {
            if (entity == null) return null!;
            return new ConversationDto
            {
                Id = entity.Id,
                UserId = entity.UserId,
                UserName = entity.UserName,
                UserAvatar = entity.UserAvatar,
                CustomerId = entity.CustomerId,
                CustomerName = entity.CustomerName,
                CustomerAvatar = entity.CustomerAvatar,
                Status = entity.Status,
                CreateTime = entity.CreateTime,
                EndTime = entity.EndTime
            };
        }

        private static List<ConversationDto> MapToConversationDtos(IEnumerable<CustomerService.Domain.Entity.ConversationEntity> entities)
        {
            var dtos = new List<ConversationDto>();
            foreach (var entity in entities)
            {
                dtos.Add(MapToConversationDto(entity));
            }
            return dtos;
        }

        private static MessageDto MapToMessageDto(CustomerService.Domain.Entity.MessageEntity entity)
        {
            return new MessageDto
            {
                Id = entity.Id,
                ConversationId = entity.ConversationId,
                SenderType = entity.SenderType,
                SenderId = entity.SenderId,
                SenderName = entity.SenderName,
                SenderAvatar = entity.SenderAvatar,
                ContentType = entity.ContentType,
                Content = entity.Content,
                CreateTime = entity.CreateTime
            };
        }

        private static List<MessageDto> MapToMessageDtos(IEnumerable<CustomerService.Domain.Entity.MessageEntity> entities)
        {
            var dtos = new List<MessageDto>();
            foreach (var entity in entities)
            {
                dtos.Add(MapToMessageDto(entity));
            }
            return dtos;
        }
    }
}