using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using UniVerse.Application.DTOs.Common;
using UniVerse.Application.DTOs.Users;
using UniVerse.Application.Interfaces;
using UniVerse.Domain.Enums;
using System.Security.Claims;

namespace UniVerse.Api.Controllers;

[ApiController]
[Route("api/v1/users")]
[Authorize]
public class UsersController : ControllerBase
{
    private readonly IUserService _users;
    private readonly IReviewService _reviews;
    private readonly IGamificationService _gamification;
    public UsersController(IUserService users, IReviewService reviews, IGamificationService gamification)
    {
        _users = users; _reviews = reviews; _gamification = gamification;
    }
    private int CurrentUserId => int.Parse(User.FindFirstValue(ClaimTypes.NameIdentifier) ?? User.FindFirstValue("sub") ?? "0");

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

    [HttpPut("{id:int}")]
    public async Task<ActionResult<UserDto>> Update(int id, [FromBody] UpdateUserRequest req)
    {
        if (CurrentUserId != id && !User.IsInRole("Admin")) return Forbid();
        return Ok(await _users.UpdateProfileAsync(id, req));
    }

    [HttpGet("{id:int}/stats")]
    public async Task<ActionResult<UserStatsDto>> Stats(int id) => Ok(await _users.GetStatsAsync(id));

    [HttpGet("{id:int}/enrollments")]
    public async Task<ActionResult> Enrollments(int id, [FromQuery] PaginationRequest pagination)
    {
        if (CurrentUserId != id && !User.IsInRole("Admin")) return Forbid();
        // Delegate to lecture service would be more proper, but returning reviews for now
        return Ok();
    }

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

    [HttpGet("{id:int}/achievements")]
    public async Task<ActionResult> Achievements(int id) =>
        Ok(await _gamification.GetUserAchievementsAsync(id));

    [HttpGet("{id:int}/transactions")]
    public async Task<ActionResult> Transactions(int id, [FromQuery] PaginationRequest pagination)
    {
        if (CurrentUserId != id && !User.IsInRole("Admin")) return Forbid();
        return Ok(await _gamification.GetTransactionsAsync(id, pagination));
    }

    [Authorize(Roles = "Admin")]
    [HttpGet]
    public async Task<ActionResult> GetAll([FromQuery] UserFilterRequest filter) =>
        Ok(await _users.GetAllAsync(filter));

    [Authorize(Roles = "Admin")]
    [HttpPatch("{id:int}/role")]
    public async Task<IActionResult> SetRole(int id, [FromBody] UserRole role)
    {
        await _users.SetRoleAsync(id, role);
        return NoContent();
    }

    [Authorize(Roles = "Admin")]
    [HttpPatch("{id:int}/active")]
    public async Task<IActionResult> SetActive(int id, [FromBody] bool isActive)
    {
        await _users.SetActiveAsync(id, isActive);
        return NoContent();
    }
}