// src/Webshop.Api/Controllers/Admin/AdminSettingsController.cs
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using System.Threading.Tasks;
using Webshop.Application;
using Webshop.Application.DTOs.Settings;
using Webshop.Application.Services.Admin.Interfaces;

namespace Webshop.Api.Controllers.Admin
{
    [ApiController]
    [Route("api/v1/admin/[controller]")]
    [Authorize(Roles = "Admin")]
    public class AdminSettingsController : ControllerBase
    {
        private readonly IAdminSettingService _adminSettingService;

        public AdminSettingsController(IAdminSettingService adminSettingService)
        {
            _adminSettingService = adminSettingService;
        }

        [HttpGet]
        [ProducesResponseType(typeof(Dictionary<string, List<SettingDto>>), StatusCodes.Status200OK)]
        public async Task<IActionResult> GetAllSettings()
        {
            var result = await _adminSettingService.GetAllGroupedAsync();
            return Ok(result.Value);
        }

        [HttpPut]
        [ProducesResponseType(StatusCodes.Status204NoContent)]
        [ProducesResponseType(typeof(ValidationProblemDetails), StatusCodes.Status400BadRequest)]
        public async Task<IActionResult> UpdateSettings([FromBody] List<SettingDto> settings)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            var result = await _adminSettingService.UpdateSettingsAsync(settings);

            return result.Type switch
            {
                ServiceResultType.Success => NoContent(),
                ServiceResultType.InvalidInput => BadRequest(new { Message = result.ErrorMessage }),
                _ => StatusCode(StatusCodes.Status500InternalServerError, new { Message = result.ErrorMessage ?? "Ein unerwarteter Fehler ist aufgetreten." })
            };
        }
    }
}