using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using PlotLine.Models;
using PlotLine.Services;
using PlotLine.ViewModels;

namespace PlotLine.Controllers;

[Authorize(Policy = "AdminOnly")]
[Route("admin")]
public sealed class AdminController(
    ICurrentUserService currentUser,
    IFeatureRequestService featureRequests) : Controller
{
    [HttpGet("")]
    [HttpGet("index")]
    public IActionResult Index()
    {
        return View();
    }

    [HttpGet("theme-audit")]
    public IActionResult ThemeAudit()
    {
        return View();
    }

    [HttpGet("feature-requests")]
    public async Task<IActionResult> FeatureRequests(string? status)
    {
        var selectedStatus = FeatureRequestStatuses.IsValid(status) ? status : null;
        return View(new AdminFeatureRequestIndexViewModel
        {
            Status = selectedStatus,
            Requests = await featureRequests.ListForAdminAsync(selectedStatus)
        });
    }

    [HttpGet("feature-requests/{id:int}")]
    public async Task<IActionResult> FeatureRequestDetails(int id)
    {
        var request = await featureRequests.GetForAdminAsync(id);
        if (request is null)
        {
            return NotFound();
        }

        return View(new FeatureRequestDetailsViewModel
        {
            IsAdminView = true,
            Request = request,
            Messages = await featureRequests.ListMessagesAsync(request.FeatureRequestID),
            Reply = new FeatureRequestReplyViewModel { FeatureRequestID = request.FeatureRequestID }
        });
    }

    [HttpPost("feature-requests/update")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> UpdateFeatureRequest(AdminFeatureRequestUpdateViewModel model)
    {
        if (!FeatureRequestStatuses.IsValid(model.Status))
        {
            return BadRequest();
        }

        var updated = await featureRequests.UpdateAdminFieldsAsync(model);
        if (!updated)
        {
            return NotFound();
        }

        TempData["AdminMessage"] = "Feature request updated.";
        return RedirectToAction(nameof(FeatureRequestDetails), new { id = model.FeatureRequestID });
    }

    [HttpPost("feature-requests/reply")]
    [ValidateAntiForgeryToken]
    public async Task<IActionResult> FeatureRequestReply([Bind(Prefix = "Reply")] FeatureRequestReplyViewModel model)
    {
        if (currentUser.UserId is not int userId)
        {
            return Forbid();
        }

        var request = await featureRequests.GetForAdminAsync(model.FeatureRequestID);
        if (request is null)
        {
            return NotFound();
        }

        if (!ModelState.IsValid)
        {
            return View(nameof(FeatureRequestDetails), new FeatureRequestDetailsViewModel
            {
                IsAdminView = true,
                Request = request,
                Messages = await featureRequests.ListMessagesAsync(request.FeatureRequestID),
                Reply = model
            });
        }

        await featureRequests.AddAdminReplyAsync(model.FeatureRequestID, userId, model.MessageBody);
        return RedirectToAction(nameof(FeatureRequestDetails), new { id = model.FeatureRequestID });
    }
}