using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using FutureMailAPI.Services;
using FutureMailAPI.DTOs;
using System.Security.Claims;

namespace FutureMailAPI.Controllers
{
    [ApiController]
    [Route("api/v1/[controller]")]
    [Authorize]
    public class MailsController : ControllerBase
    {
        private readonly IMailService _mailService;
        
        public MailsController(IMailService mailService)
        {
            _mailService = mailService;
        }
        
        [HttpPost]
        public async Task<ActionResult<ApiResponse<SentMailResponseDto>>> CreateMail([FromBody] SentMailCreateDto createDto)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ApiResponse<SentMailResponseDto>.ErrorResult("输入数据无效"));
            }
            
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<SentMailResponseDto>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.CreateMailAsync(currentUserId.Value, createDto);
            
            if (!result.Success)
            {
                return BadRequest(result);
            }
            
            return CreatedAtAction(
                nameof(GetMail), 
                new { mailId = result.Data!.Id }, 
                result);
        }
        
        [HttpGet("{mailId}")]
        public async Task<ActionResult<ApiResponse<SentMailResponseDto>>> GetMail(int mailId)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<SentMailResponseDto>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.GetSentMailByIdAsync(currentUserId.Value, mailId);
            
            if (!result.Success)
            {
                return NotFound(result);
            }
            
            return Ok(result);
        }
        
        [HttpGet]
        public async Task<ActionResult<ApiResponse<PagedResponse<SentMailResponseDto>>>> GetMails([FromQuery] MailListQueryDto queryDto)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<PagedResponse<SentMailResponseDto>>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.GetSentMailsAsync(currentUserId.Value, queryDto);
            
            return Ok(result);
        }
        
        [HttpPut("{mailId}")]
        public async Task<ActionResult<ApiResponse<SentMailResponseDto>>> UpdateMail(int mailId, [FromBody] SentMailUpdateDto updateDto)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ApiResponse<SentMailResponseDto>.ErrorResult("输入数据无效"));
            }
            
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<SentMailResponseDto>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.UpdateMailAsync(currentUserId.Value, mailId, updateDto);
            
            if (!result.Success)
            {
                return BadRequest(result);
            }
            
            return Ok(result);
        }
        
        [HttpDelete("{mailId}")]
        public async Task<ActionResult<ApiResponse<bool>>> DeleteMail(int mailId)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<bool>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.DeleteMailAsync(currentUserId.Value, mailId);
            
            if (!result.Success)
            {
                return BadRequest(result);
            }
            
            return Ok(result);
        }
        
        [HttpGet("received")]
        public async Task<ActionResult<ApiResponse<PagedResponse<ReceivedMailResponseDto>>>> GetReceivedMails([FromQuery] MailListQueryDto queryDto)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<PagedResponse<ReceivedMailResponseDto>>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.GetReceivedMailsAsync(currentUserId.Value, queryDto);
            
            return Ok(result);
        }
        
        [HttpGet("received/{id}")]
        public async Task<ActionResult<ApiResponse<ReceivedMailResponseDto>>> GetReceivedMail(int id)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<ReceivedMailResponseDto>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.GetReceivedMailByIdAsync(currentUserId.Value, id);
            
            if (!result.Success)
            {
                return NotFound(result);
            }
            
            return Ok(result);
        }
        
        [HttpPost("received/{id}/mark-read")]
        public async Task<ActionResult<ApiResponse<bool>>> MarkReceivedMailAsRead(int id)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<bool>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.MarkReceivedMailAsReadAsync(currentUserId.Value, id);
            
            if (!result.Success)
            {
                return BadRequest(result);
            }
            
            return Ok(result);
        }
        
        [HttpPost("{mailId}/revoke")]
        public async Task<ActionResult<ApiResponse<bool>>> RevokeMail(int mailId)
        {
            // 从JWT令牌中获取当前用户ID
            var currentUserId = GetCurrentUserId();
            
            if (currentUserId == null)
            {
                return Unauthorized(ApiResponse<bool>.ErrorResult("未授权访问"));
            }
            
            var result = await _mailService.RevokeMailAsync(currentUserId.Value, mailId);
            
            if (!result.Success)
            {
                return BadRequest(result);
            }
            
            return Ok(result);
        }
        
        private int? GetCurrentUserId()
        {
            var userIdClaim = User.FindFirst(ClaimTypes.NameIdentifier);
            
            if (userIdClaim == null || !int.TryParse(userIdClaim.Value, out var userId))
            {
                return null;
            }
            
            return userId;
        }
    }
}