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

namespace ErsatzTV.Controllers.Api;

[ApiController]
public class WatermarkController(IMediator mediator) : ControllerBase
{
    [HttpGet("/api/v1/watermarks", Name = "GetWatermarks")]
    [Tags("Watermarks")]
    [EndpointSummary("Get all watermarks")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(List<WatermarkResponseModel>), StatusCodes.Status200OK)]
    public async Task<List<WatermarkResponseModel>> GetAll(CancellationToken cancellationToken) =>
        await mediator.Send(new GetAllWatermarksForApi(), cancellationToken);

    [HttpGet("/api/v1/watermarks/{id:int}", Name = "GetWatermarkById")]
    [Tags("Watermarks")]
    [EndpointSummary("Get a watermark by id")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(WatermarkFullResponseModel), StatusCodes.Status200OK)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    public async Task<IActionResult> GetById(int id, CancellationToken cancellationToken)
    {
        Option<WatermarkFullResponseModel> result =
            await mediator.Send(new GetWatermarkByIdForApi(id), cancellationToken);
        return result.ToGetResult();
    }

    [HttpPost("/api/v1/watermarks", Name = "CreateWatermark")]
    [Tags("Watermarks")]
    [EndpointSummary("Create a watermark")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(WatermarkFullResponseModel), StatusCodes.Status201Created)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status401Unauthorized)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
    [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status422UnprocessableEntity)]
    public async Task<IActionResult> Create(
        [Required][FromBody] CreateWatermarkRequest request,
        CancellationToken cancellationToken)
    {
        Either<BaseError, CreateWatermarkResult> result = await mediator.Send(request.ToCommand(), cancellationToken);
        return await result.Match(
            Left: error => Task.FromResult(error.ToErrorResult()),
            Right: async created =>
            {
                Option<WatermarkFullResponseModel> watermark =
                    await mediator.Send(new GetWatermarkByIdForApi(created.WatermarkId), cancellationToken);
                return watermark.Match(
                    Some: vm => (IActionResult)new CreatedResult($"/api/v1/watermarks/{vm.Id}", vm),
                    None: () => ApiResults.NotFoundProblem());
            });
    }

    [HttpPut("/api/v1/watermarks/{id:int}", Name = "UpdateWatermark")]
    [Tags("Watermarks")]
    [EndpointSummary("Update a watermark")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(WatermarkFullResponseModel), 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] UpdateWatermarkRequest request,
        CancellationToken cancellationToken)
    {
        Either<BaseError, UpdateWatermarkResult> result =
            await mediator.Send(request.ToCommand(id), cancellationToken);
        return await result.Match(
            Left: error => Task.FromResult(error.ToErrorResult()),
            Right: async _ =>
            {
                Option<WatermarkFullResponseModel> watermark =
                    await mediator.Send(new GetWatermarkByIdForApi(id), cancellationToken);
                return watermark.Match(
                    Some: vm => (IActionResult)new OkObjectResult(vm),
                    None: () => ApiResults.NotFoundProblem());
            });
    }

    [HttpDelete("/api/v1/watermarks/{id:int}", Name = "DeleteWatermark")]
    [Tags("Watermarks")]
    [EndpointSummary("Delete a watermark")]
    [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 DeleteWatermark(id), cancellationToken);
        return result.ToDeletedResult();
    }
}