using Asp.Versioning;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using TarninaHub.Application.Abstractions;
using TarninaHub.Application.Dtos;
using TarninaHub.Application.Security;

namespace TarninaHub.Controllers;

[ApiController]
[ApiVersion("1.0")]
[Route("api/consents")]
[Authorize]
public class ConsentsController : ControllerBase
{
    private readonly IConsentService _consentService;
    private readonly IAuditLogService _auditLogService;

    public ConsentsController(IConsentService consentService, IAuditLogService auditLogService)
    {
        _consentService = consentService;
        _auditLogService = auditLogService;
    }

    [HttpPost]
    public async Task<ActionResult<ConsentResponse>> Grant(
        GrantConsentRequest request,
        CancellationToken cancellationToken)
    {
        var userId = User.GetUserId();

        if (string.IsNullOrWhiteSpace(userId))
        {
            return Unauthorized();
        }

        if (!ConsentScopes.All.Contains(request.Scope))
        {
            ModelState.AddModelError(nameof(request.Scope),
                $"Scope must be one of: {string.Join(", ", ConsentScopes.All)}.");

            return ValidationProblem(ModelState);
        }

        var consent = await _consentService.GrantAsync(userId, request, cancellationToken);

        await _auditLogService.RecordAsync(
            userId,
            "consent.grant",
            consent.Id,
            new Dictionary<string, string?> { ["scope"] = request.Scope },
            cancellationToken);

        return StatusCode(StatusCodes.Status201Created, consent);
    }

    [HttpGet("mine")]
    public async Task<ActionResult<IReadOnlyList<ConsentResponse>>> GetMine(CancellationToken cancellationToken)
    {
        var userId = User.GetUserId();

        if (string.IsNullOrWhiteSpace(userId))
        {
            return Unauthorized();
        }

        var consents = await _consentService.ListForUserAsync(userId, cancellationToken);

        return Ok(consents);
    }

    [HttpPost("{consentId}/revoke")]
    public async Task<IActionResult> Revoke(string consentId, CancellationToken cancellationToken)
    {
        var userId = User.GetUserId();

        if (string.IsNullOrWhiteSpace(userId))
        {
            return Unauthorized();
        }

        var revoked = await _consentService.RevokeAsync(consentId, userId, cancellationToken);

        if (!revoked)
        {
            return NotFound();
        }

        await _auditLogService.RecordAsync(
            userId,
            "consent.revoke",
            consentId,
            new Dictionary<string, string?>(),
            cancellationToken);

        return NoContent();
    }
}