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

namespace TarninaHub.Controllers;

[ApiController]
[ApiVersion("1.0")]
[Route("api/innovations")]
[Authorize]
public class InnovationsController : ControllerBase
{
    private readonly IInnovationService _innovations;
    private readonly IMatchmakingService _matchmakingService;

    public InnovationsController(IInnovationService innovations, IMatchmakingService matchmakingService)
    {
        _innovations = innovations;
        _matchmakingService = matchmakingService;
    }

    [HttpGet]
    public async Task<ActionResult<IReadOnlyList<InnovationResponse>>> List(
        [FromQuery] string? challengeId,
        [FromQuery] string? stage,
        [FromQuery] string? q,
        CancellationToken cancellationToken)
    {
        var innovations = await _innovations.ListAsync(challengeId, stage, q, !IsStaff(), cancellationToken);

        return Ok(innovations);
    }

    [HttpGet("{innovationId}")]
    public async Task<ActionResult<InnovationResponse>> GetById(
        string innovationId,
        CancellationToken cancellationToken)
    {
        var innovation = await _innovations.GetAsync(innovationId, cancellationToken);

        return innovation is null ? NotFound() : Ok(innovation);
    }

    [HttpPost]
    [Authorize(Policy = Policies.OperatorOrAdmin)]
    public async Task<ActionResult<InnovationResponse>> Create(
        InnovationRequest request,
        CancellationToken cancellationToken)
    {
        if (!ValidateStage(request.Stage))
        {
            return InvalidStage();
        }

        var created = await _innovations.CreateAsync(request, cancellationToken);

        await _matchmakingService.IndexInnovationAsync(created.Id, cancellationToken);

        return CreatedAtAction(nameof(GetById), new { innovationId = created.Id }, created);
    }

    [HttpPut("{innovationId}")]
    [Authorize(Policy = Policies.OperatorOrAdmin)]
    public async Task<ActionResult<InnovationResponse>> Update(
        string innovationId,
        InnovationRequest request,
        CancellationToken cancellationToken)
    {
        if (!ValidateStage(request.Stage))
        {
            return InvalidStage();
        }

        var updated = await _innovations.UpdateAsync(innovationId, request, cancellationToken);

        if (updated is not null)
        {
            await _matchmakingService.IndexInnovationAsync(updated.Id, cancellationToken);
        }

        return updated is null ? NotFound() : Ok(updated);
    }

    private bool ValidateStage(string? stage) => InnovationStageWire.IsValid(stage);

    private ActionResult InvalidStage()
    {
        ModelState.AddModelError(nameof(InnovationRequest.Stage),
            "Stage must be one of: idea, pilot, scaling, service.");

        return ValidationProblem(ModelState);
    }

    private bool IsStaff() =>
        User.IsInRole(RoleNames.Operator) || User.IsInRole(RoleNames.Manager) || User.IsInRole(RoleNames.Admin);
}