using Entities.Contracts;
using Entities.DTO;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using TechHelper.Server.Services;
using System.Security.Claims;
using TechHelper.Services;


namespace TechHelper.Server.Controllers
{
	[Route("api/exam")]
	[ApiController]
	[Authorize]


	public class ExamController : ControllerBase
	{
		private IExamService _examService;
		private readonly UserManager<User> _userManager;

		public ExamController(IExamService examService, UserManager<User> userManager)
		{
			_examService = examService;
			_userManager = userManager;
		}

		[HttpPost("add")]
		public async Task<IActionResult> AddExam(
			[FromBody] AssignmentDto examDto)
		{
			var user = await _userManager.FindByEmailAsync(User.Identity?.Name ?? "");
			if (user == null) return BadRequest("无效的用户");

			examDto.CreatorId = user.Id;
			var result = await _examService.CreateExamAsync(examDto);
			if (result.Status)
			{
				return Ok(result);
			}
			else
			{
				return BadRequest();
			}
		}

		[HttpPost("submission")]
		public async Task<IActionResult> SubmissionAssignment(
			[FromBody] SubmissionDto submissionDto)
		{
			if (User == null) return BadRequest("无效的用户");
			if (User.IsInRole("Teacher"))
			{
				var result = await _examService.SubmissionAssignment(submissionDto);
				if (result.Status)
				{
					return Ok(result);
				}
				else
				{
					return BadRequest(result.Message);
				}
			}
			else
			{
				return BadRequest("你没有权限修改");
			}
		}

		[HttpGet("get")]
		public async Task<IActionResult> GetExamById(Guid id)
		{

			var result = await _examService.GetAsync(id);
			if (result.Status)
				return Ok(result.Result);
			else
				return BadRequest("查找失败");
		}


		[HttpGet("getAllPreview")]
		public async Task<IActionResult> GetAllExamPreview()
		{
			if (User == null) return BadRequest("用户验证失败, 无效用户");

			var userid = await _userManager.FindByEmailAsync(User.Identity.Name);


			var result = new ApiResponse();
			if (User.IsInRole("Teacher"))
			{
				result = await _examService.GetAllExamPreviewsAsync(userid.Id);
			}
			else if (User.IsInRole("Student"))
			{
				result = await _examService.GetAllSubmissionAsync(userid.Id);
			}
			else
			{
				return BadRequest("你没有相应的权限");
			}

			if (result.Status)
			{
				return Ok(result.Result);
			}
			return BadRequest(result);
		}


		[HttpGet("getAllSubmission")]
		public async Task<IActionResult> GetAllSubmission()
		{
			if (User == null) return BadRequest("用户验证失败, 无效用户");

			var userid = await _userManager.FindByEmailAsync(User.Identity.Name);

			var result = await _examService.GetAllSubmissionAsync(userid.Id);

			if (result.Status)
			{
				return Ok(result.Result);
			}
			return BadRequest(result);
		}


		[Authorize(Roles = "Teacher")]
		[HttpDelete("{guid}")]
		public async Task<IActionResult> DeleteAsync(Guid guid)
		{
			var deleteResult = await _examService.DeleteAsync(guid);
			if (deleteResult.Status)
			{
				return Ok();
			}
			return BadRequest();
		}
	}
}