// src/Webshop.Api/Controllers/Admin/AdminAnalyticsController.cs
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using System.Threading.Tasks;
using Webshop.Application.DTOs.Admin;
using Webshop.Application.Services.Admin.Interfaces;

namespace Webshop.Api.Controllers.Admin
{
    /// <summary>
    /// Stellt aggregierte Analysedaten für das Admin-Dashboard bereit.
    /// </summary>
    [ApiController]
    [Route("api/v1/admin/[controller]")]
    [Authorize(Roles = "Admin")]
    public class AdminAnalyticsController : ControllerBase
    {
        private readonly IAdminAnalyticsService _analyticsService;

        public AdminAnalyticsController(IAdminAnalyticsService analyticsService)
        {
            _analyticsService = analyticsService;
        }

        /// <summary>
        /// Ruft die aggregierten Analysedaten und KPIs für den Admin-Bereich ab.
        /// </summary>
        /// <param name="period">Der Zeitraum für die Statistiken (Last7Days, Last30Days, AllTime). Standard ist Last30Days.</param>
        [HttpGet]
        public async Task<ActionResult<AnalyticsDto>> GetAnalytics([FromQuery] AnalyticsPeriod period = AnalyticsPeriod.Last30Days)
        {
            var stats = await _analyticsService.GetAnalyticsAsync(period);
            return Ok(stats);
        }
    }
}