using Biskilog_Accounting.Server.POSModels;
using Biskilog_Accounting.Server.Services;
using Biskilog_Accounting.Shared.CustomModels;
using Biskilog_Accounting.Shared.Interfaces;
using Biskilog_Accounting.Shared.POSModels;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.Net.Http.Headers;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;

namespace Biskilog_Accounting.Server.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class AnalyticsController : ControllerBase
    {
        private readonly IConnectionService m_connection;
        private readonly ITokenService m_tokenService;
        public AnalyticsController(ITokenService tokenService, IConnectionService connection)
        {
            m_tokenService = tokenService;
            m_connection = connection;
        }

        /// <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)
        {
            string token = Request.Headers[HeaderNames.Authorization]!;
            int? databaseId = m_tokenService.GetDatabaseIdFromToken(token);
            string connectionString = m_connection.GetClientConnectionString(databaseId!.Value);
            bool? comparisonMode = m_tokenService.GetComparison(token);
            string? currentBranch = m_tokenService.GetBaseBranch(token);

            //Creates a new db context
            BiskAcdbContext newContext = (BiskAcdbContext)m_connection.PrepareDBContext(connectionString);

            AnalyticalService analysis = new(newContext, comparisonMode!.Value, currentBranch!);
            var result = analysis.GetCancelledSales(a_start, a_end);

            return result;
        }
        /// <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)
        {
            string token = Request.Headers[HeaderNames.Authorization]!;
            int? databaseId = m_tokenService.GetDatabaseIdFromToken(token);
            string connectionString = m_connection.GetClientConnectionString(databaseId!.Value);
            bool? comparisonMode = m_tokenService.GetComparison(token);
            string? currentBranch = m_tokenService.GetBaseBranch(token);

            //Creates a new db context
            BiskAcdbContext newContext = (BiskAcdbContext)m_connection.PrepareDBContext(connectionString);

            AnalyticalService analysis = new(newContext, comparisonMode!.Value, currentBranch!);
            return analysis.GetSalesTransaction(a_start, a_end);
        }
        /// <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<InDebtCustomers> GetInDebtCustomers()
        {
            string token = Request.Headers[HeaderNames.Authorization]!;
            int? databaseId = m_tokenService.GetDatabaseIdFromToken(token);
            string connectionString = m_connection.GetClientConnectionString(databaseId!.Value);
            bool? comparisonMode = m_tokenService.GetComparison(token);
            string? currentBranch = m_tokenService.GetBaseBranch(token);

            //Creates a new db context
            BiskAcdbContext newContext = (BiskAcdbContext)m_connection.PrepareDBContext(connectionString);

            AnalyticalService analysis = new(newContext, comparisonMode!.Value, currentBranch!);
            return analysis.GetInDebtCustomers();
        }

    }
}