using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using PARR.API.Contracts.V1;
using PARR.API.Contracts.V1.Requests.BaseRequests;
using PARR.API.Contracts.V1.Responses.Base;
using PARR.API.Contracts.V1.Responses.Statistics;
using PARR.API.Controllers.V1.Base;
using PARR.BLL.Services.Interfaces;
using PARR.Constants;
using PARR.DAL.Services.Interfaces;

namespace PARR.API.Controllers.V1.Statistics
{
    /// <summary>
    /// Статистика по приложениям
    /// </summary>
    [Authorize(Roles = ParrRoles.Administrator.Role)]
    public class StatApplicationController : BaseApiController
    {
        private readonly IApplicationService applicationService;
        private readonly ICalendarService calendarService;

        public StatApplicationController(IApplicationService applicationService, ICalendarService calendarService)
        {
            this.applicationService = applicationService;
            this.calendarService = calendarService;
        }

        /// <summary>
        /// Статистика синхронизации приложений с АИХИТ за последние сутки
        /// </summary>
        /// <returns></returns>
        [HttpGet(ApiRoutes.StatApplication.Get)]
        public async Task<IActionResult> Get()
        {
            var queryDate = DateTimeOffset.UtcNow.AddDays(-1);

            var response = new StatApplicationResponse
            {
                AllApplications = await applicationService.Get().CountAsync(),
                CreatedLastDay = await applicationService.Get().CountAsync(t => t.DateCreated >= queryDate),
                UpdatedLastDay = await applicationService.Get().CountAsync(t => t.DateModified.HasValue && t.DateModified.Value >= queryDate),
            };

            return Ok(new Response<StatApplicationResponse>(response, true));
        }


        /// <summary>
        /// Получить статистику за период
        /// </summary>
        /// <param name="timeZoneQuery"></param>
        /// <param name="startPeriodDays"></param>
        /// <returns></returns>
        [HttpGet(ApiRoutes.StatApplication.GetForPeriod)]
        public async Task<IActionResult> GetForPeriod([FromQuery] TimeZoneOffsetClient timeZoneQuery, [FromQuery] int startPeriodDays = 3)
        {
            var endPeriod = calendarService.GetDateWithTimeZoneOffset(DateTimeOffset.UtcNow, timeZoneQuery.TimeZoneOffsetHours);
            var startPeriod = endPeriod.AddDays(-startPeriodDays);

            var query = applicationService.Get()
                            .Where(t => t.DateCreated.DateTime.Date >= startPeriod.Date && t.DateCreated.DateTime.Date <= endPeriod.Date)
                            .GroupBy(t => t.DateCreated.Date)
                            .Select(t => new
                            {
                                Date = t.Key,
                                ApplicationCount = t.Count()
                            });

            var result = await query.ToListAsync();

            var daysList = calendarService.GetDatesForPeriod(startPeriod, endPeriod);

            var response = new List<StatApplicationPeriodResponse>();

            daysList.ForEach(date =>
            {
                response.Add(new StatApplicationPeriodResponse
                {
                    Date = date,
                    CreatedApplicationsCount = result.FirstOrDefault(t => DateOnly.FromDateTime(t.Date) == date)?.ApplicationCount ?? 0
                });
            });

            response = response.OrderBy(t => t.Date).ToList();

            return Ok(new Response<List<StatApplicationPeriodResponse>>(response, true));
        }



    }
}