using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using UniVerse.Application.DTOs.Common;
using UniVerse.Application.DTOs.Lectures;
using UniVerse.Application.Interfaces;
using System.Security.Claims;

namespace UniVerse.Api.Controllers;

[ApiController]
[Route("api/v1/lectures")]
[Authorize]
public class LecturesController : ControllerBase
{
    private readonly ILectureService _lectures;
    private readonly IReviewService _reviews;
    public LecturesController(ILectureService lectures, IReviewService reviews)
    { _lectures = lectures; _reviews = reviews; }
    private int CurrentUserId => int.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier) ?? User.FindFirstValue("sub") ?? "0");

    [HttpGet]
    public async Task<ActionResult> GetAll([FromQuery] LectureFilterRequest filter) =>
        Ok(await _lectures.GetAllAsync(filter));

    [HttpGet("{id:int}")]
    public async Task<ActionResult> Get(int id) =>
        Ok(await _lectures.GetByIdAsync(id, CurrentUserId));

    [Authorize(Roles = "Admin")]
    [HttpPost]
    public async Task<ActionResult<LectureDto>> Create([FromBody] CreateLectureRequest req) =>
        CreatedAtAction(nameof(Get), new { id = 0 }, await _lectures.CreateAsync(req));

    [Authorize(Roles = "Admin,Teacher")]
    [HttpPut("{id:int}")]
    public async Task<ActionResult<LectureDto>> Update(int id, [FromBody] UpdateLectureRequest req) =>
        Ok(await _lectures.UpdateAsync(id, req));

    [Authorize(Roles = "Admin")]
    [HttpDelete("{id:int}")]
    public async Task<IActionResult> Delete(int id) { await _lectures.DeleteAsync(id); return NoContent(); }

    [Authorize(Roles = "Student")]
    [HttpPost("{id:int}/enroll")]
    public async Task<IActionResult> Enroll(int id) { await _lectures.EnrollAsync(id, CurrentUserId); return NoContent(); }

    [Authorize(Roles = "Student")]
    [HttpDelete("{id:int}/enroll")]
    public async Task<IActionResult> Unenroll(int id) { await _lectures.UnenrollAsync(id, CurrentUserId); return NoContent(); }

    [Authorize(Roles = "Admin,Teacher")]
    [HttpPatch("{id:int}/attendance/{userId:int}")]
    public async Task<IActionResult> Attendance(int id, int userId, [FromBody] bool attended)
    { await _lectures.MarkAttendanceAsync(id, userId, attended); return NoContent(); }

    [Authorize(Roles = "Admin,Teacher")]
    [HttpGet("{id:int}/enrollments")]
    public async Task<ActionResult> Enrollments(int id, [FromQuery] PaginationRequest pagination) =>
        Ok(await _lectures.GetEnrollmentsAsync(id, pagination));

    [HttpGet("{id:int}/reviews")]
    public async Task<ActionResult> Reviews(int id, [FromQuery] PaginationRequest pagination) =>
        Ok(await _reviews.GetByLectureAsync(id, pagination));

}