using System.ComponentModel.DataAnnotations;
using ErsatzTV.Application.Filler;
using ErsatzTV.Controllers.Api.Requests;
using ErsatzTV.Core;
using ErsatzTV.Core.Api.Filler;
using ErsatzTV.Core.Domain.Filler;
using ErsatzTV.Extensions;
using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace ErsatzTV.Controllers.Api;

[ApiController]
public class FillerPresetController(IMediator mediator) : ControllerBase
{
    [HttpGet("/api/filler-presets", Name = "GetFillerPresets")]
    [Tags("Filler Presets")]
    [EndpointSummary("Get all filler presets")]
    [EndpointDescription("Optionally filter to a single filler kind via the fillerKind query parameter.")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(List<FillerPresetResponseModel>), StatusCodes.Status200OK)]
    public async Task<List<FillerPresetResponseModel>> GetAll(
        [FromQuery] FillerKind? fillerKind,
        CancellationToken cancellationToken) =>
        await mediator.Send(new GetAllFillerPresetsForApi(fillerKind), cancellationToken);

    [HttpGet("/api/filler-presets/{id:int}", Name = "GetFillerPresetById")]
    [Tags("Filler Presets")]
    [EndpointSummary("Get a filler preset by id")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(FillerPresetFullResponseModel), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    public async Task<IActionResult> GetById(int id, CancellationToken cancellationToken)
    {
        Option<FillerPresetFullResponseModel> result =
            await mediator.Send(new GetFillerPresetByIdForApi(id), cancellationToken);
        return result.ToGetResult();
    }

    [HttpPost("/api/filler-presets", Name = "CreateFillerPreset")]
    [Tags("Filler Presets")]
    [EndpointSummary("Create a filler preset")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(FillerPresetFullResponseModel), StatusCodes.Status201Created)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status401Unauthorized)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status422UnprocessableEntity)]
    public async Task<IActionResult> Create(
        [Required] [FromBody] CreateFillerPresetRequest request,
        CancellationToken cancellationToken)
    {
        Either<BaseError, CreateFillerPresetResult> result =
            await mediator.Send(request.ToCommand(), cancellationToken);
        return await result.Match(
            Left: error => Task.FromResult(error.ToErrorResult()),
            Right: async created =>
            {
                Option<FillerPresetFullResponseModel> fillerPreset =
                    await mediator.Send(new GetFillerPresetByIdForApi(created.FillerPresetId), cancellationToken);
                return fillerPreset.Match(
                    Some: vm => (IActionResult)new CreatedResult($"/api/filler-presets/{vm.Id}", vm),
                    None: () => ApiResults.NotFoundProblem());
            });
    }

    [HttpPut("/api/filler-presets/{id:int}", Name = "UpdateFillerPreset")]
    [Tags("Filler Presets")]
    [EndpointSummary("Update a filler preset")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(FillerPresetFullResponseModel), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status401Unauthorized)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status422UnprocessableEntity)]
    public async Task<IActionResult> Update(
        int id,
        [Required] [FromBody] UpdateFillerPresetRequest request,
        CancellationToken cancellationToken)
    {
        Either<BaseError, Unit> result = await mediator.Send(request.ToCommand(id), cancellationToken);
        return await result.Match(
            Left: error => Task.FromResult(error.ToErrorResult()),
            Right: async _ =>
            {
                Option<FillerPresetFullResponseModel> fillerPreset =
                    await mediator.Send(new GetFillerPresetByIdForApi(id), cancellationToken);
                return fillerPreset.Match(
                    Some: vm => (IActionResult)new OkObjectResult(vm),
                    None: () => ApiResults.NotFoundProblem());
            });
    }

    [HttpDelete("/api/filler-presets/{id:int}", Name = "DeleteFillerPreset")]
    [Tags("Filler Presets")]
    [EndpointSummary("Delete a filler preset")]
    [EndpointGroupName("general")]
    [ProducesResponseType(StatusCodes.Status204NoContent)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status401Unauthorized)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status422UnprocessableEntity)]
    public async Task<IActionResult> Delete(int id, CancellationToken cancellationToken)
    {
        Either<BaseError, Unit> result = await mediator.Send(new DeleteFillerPreset(id), cancellationToken);
        return result.ToDeletedResult();
    }
}