using Biskilog_Accounting.Shared.CustomModels;
using Biskilog_Accounting.Shared.Interfaces;
using Biskilog_Accounting.Shared.POSModels;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Net.Http.Headers;
using NuGet.Common;

namespace Biskilog_Accounting.Server.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class AnalyticsController : ControllerBase
    {
        private readonly IAnalytics m_analyticService;
        public AnalyticsController(IAnalytics a_analytics)
        {
            m_analyticService = a_analytics;
        }

        /// <summary>
        /// Endpoint to return analysis on CancelledSales within a specified period
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("cancelledsales/{a_start}/{a_end}")]
        public IEnumerable<CancelledSales> GetCancelledSalesAsync(DateTime a_start, DateTime a_end)
        {
            return m_analyticService.GetCancelledSales(a_start, a_end);
        }
        /// <summary>
        /// Endpoint to return analysis on Sales within a specified period
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("sales/{a_start}/{a_end}")]
        public IEnumerable<Tblcart> GetSalesAsync(DateTime a_start, DateTime a_end)
        {
            return m_analyticService.GetSalesTransaction(a_start, a_end);
        }
        /// <summary>
        /// Endpoint to return analysis on Sales within a specified period
        /// </summary>
        [Authorize]
        [HttpGet, Route("sales/weekly")]
        public IEnumerable<WeeklySaleItem> GetWeeklySalesAsync()
        {   
            return m_analyticService.GetWeeklySalesTransaction().OrderBy(a => a.Date);
        }
        /// <summary>
        /// Endpoint to return analysis on in-debt customers
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("debtors")]
        public IEnumerable<CustomerAccounts> GetInDebtCustomers()
        {
            return m_analyticService.GetInDebtCustomers();
        }
        /// <summary>
        /// Endpoint to return analysis on product price changes
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("pricechanges/{a_start}/{a_end}")]
        public IEnumerable<ProductPriceChange> GetPriceChanges(DateTime a_start, DateTime a_end)
        {
            return m_analyticService.GetPriceChanges(a_start, a_end);
        }
        /// <summary>
        /// Endpoint to return analysis on sales by employees
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("employeesales/{a_start}/{a_end}")]
        public Dictionary<string, List<SaleItem>> GetEmployeeSales(DateTime a_start, DateTime a_end)
        {
            return m_analyticService.GetEmployeeSales(a_start, a_end);
        }
        /// <summary>
        /// Endpoint to return analysis on product items low on stock
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("lowonstock")]
        public IEnumerable<ProductItem> GetLowOnStockItems()
        {
            
            return m_analyticService.GetOutOfStockItems();
        }
        /// <summary>
        /// Endpoint to return analysis on the most purchased product item
        /// </summary>
        /// <param name="a_start"></param>
        /// <param name="a_end"></param>
        [Authorize]
        [HttpGet, Route("mostpurchaseditem/{a_start}/{a_end}")]
        public IEnumerable<MostPurchasedItem> GetMostPurchased(DateTime a_start, DateTime a_end)
        {
            return  m_analyticService.GetMostPurchasedItem(a_start, a_end);
        }
        /// <summary>
        /// Endpoint to return analysis on trade summary
        /// </summary>
        [Authorize]
        [HttpGet, Route("tradesummary")]
        public TradeSummary GetTradeSummary()
        {
            return m_analyticService.GetTradeSummary();
        }
        /// <summary>
        /// Endpoint to return analysis on trade summary group by categories
        /// </summary>
        [Authorize]
        [HttpGet, Route("categorysummary")]
        public IEnumerable<WeeklyCategorySummary> GetCategoryTradeSummary()
        {
            return m_analyticService.GetWeeklySalesCategoryTransaction(10);
        }
        /// <summary>
        /// Endpoint to return analysis on recent transactions
        /// </summary>
        [Authorize]
        [HttpGet, Route("sales/recent/{a_limit}")]
        public IEnumerable<SaleItem> GetRecentTransactions(int a_limit)
        {
            return m_analyticService.GetRecentSales(a_limit);
        }
        /// <summary>
        /// Endpoint to return analysis on recent price changes
        /// </summary>
        [Authorize]
        [HttpGet, Route("pricechanges/recent/{a_limit}")]
        public IEnumerable<ProductPriceChange> GetRecentPricing(int a_limit)
        {
            return m_analyticService.GetRecentPriceChanges(a_limit);
        }
        /// <summary>
        /// Endpoint to return analysis on product price change history
        /// </summary>
        [Authorize]
        [HttpGet, Route("pricechanges/product/history/{a_limit}")]
        public IEnumerable<ProductPriceChange> GetPriceChangeHistory(int a_limit)
        {
            return m_analyticService.GetProductPriceChangeHistory(a_limit);
        }
    }
}