Analysis controller completed

Server/Controllers/AnalyticsController.cs

@@ -1,16 +1,10 @@
-using Biskilog_Accounting.Server.POSModels;
+using Biskilog_Accounting.Shared.CustomModels;
-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 NuGet.Common;
-using System.Data.Entity;
 
 namespace Biskilog_Accounting.Server.Controllers
 {
@@ -18,12 +12,12 @@ namespace Biskilog_Accounting.Server.Controllers
     [ApiController]
     public class AnalyticsController : ControllerBase
     {
-        private readonly IConnectionService m_connection;
         private readonly ITokenService m_tokenService;
-        public AnalyticsController(ITokenService tokenService, IConnectionService connection)
+        private readonly IAnalytics m_analyticService;
+        public AnalyticsController(ITokenService tokenService, IAnalytics a_analytics)
         {
             m_tokenService = tokenService;
-            m_connection = connection;
+            m_analyticService = a_analytics;
         }
 
         /// <summary>
@@ -36,18 +30,9 @@ namespace Biskilog_Accounting.Server.Controllers
         public IEnumerable<CancelledSales> GetCancelledSalesAsync(DateTime a_start, DateTime a_end)
         {
             string token = Request.Headers[HeaderNames.Authorization]!;
-            int? databaseId = m_tokenService.GetDatabaseIdFromToken(token);
+            m_analyticService.SetContraints(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
+            return m_analyticService.GetCancelledSales(a_start, a_end);
-            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
@@ -59,16 +44,9 @@ namespace Biskilog_Accounting.Server.Controllers
         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!);
+            m_analyticService.SetContraints(token);
-            return analysis.GetSalesTransaction(a_start, a_end);
+            return m_analyticService.GetSalesTransaction(a_start, a_end);
         }
         /// <summary>
         /// Endpoint to return analysis on in-debt customers
@@ -80,17 +58,65 @@ namespace Biskilog_Accounting.Server.Controllers
         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
+            m_analyticService.SetContraints(token);
-            BiskAcdbContext newContext = (BiskAcdbContext)m_connection.PrepareDBContext(connectionString);
+            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)
+        {
+            string token = Request.Headers[HeaderNames.Authorization]!;
 
-            AnalyticalService analysis = new(newContext, comparisonMode!.Value, currentBranch!);
+            m_analyticService.SetContraints(token);
-            return analysis.GetInDebtCustomers();
+            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)
+        {
+            string token = Request.Headers[HeaderNames.Authorization]!;
 
+            m_analyticService.SetContraints(token);
+            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()
+        {
+            string token = Request.Headers[HeaderNames.Authorization]!;
+
+            m_analyticService.SetContraints(token);
+            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)
+        {
+            string token = Request.Headers[HeaderNames.Authorization]!;
+
+            m_analyticService.SetContraints(token);
+            return m_analyticService.GetMostPurchasedItem(a_start, a_end);
+        }
     }
 }

Server/Services/AnalyticalService.cs

@@ -1,8 +1,11 @@
-using Biskilog_Accounting.Server.POSModels;
+using Azure.Core;
+using Biskilog_Accounting.Server.POSModels;
+using Biskilog_Accounting.ServiceRepo;
 using Biskilog_Accounting.Shared.CustomModels;
 using Biskilog_Accounting.Shared.Interfaces;
 using Biskilog_Accounting.Shared.POSModels;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Net.Http.Headers;
 using System.Data.Entity;
 using System.Runtime.CompilerServices;
 using static Microsoft.EntityFrameworkCore.DbLoggerCategory;
@@ -15,13 +18,13 @@ namespace Biskilog_Accounting.Server.Services
     public class AnalyticalService : IAnalytics
     {
         private readonly BiskAcdbContext m_context;
+        private readonly ITokenService m_tokenService;
         private bool m_comparisonMode;
         private string m_activeBranch;
-        public AnalyticalService(BiskAcdbContext a_context, bool a_comparisonMode, string a_activeBranchId)
+        public AnalyticalService(BiskAcdbContext a_context, ITokenService a_tokenService)
         {
             m_context = a_context;
-            m_comparisonMode = a_comparisonMode;
+            m_tokenService = a_tokenService;
-            m_activeBranch = a_activeBranchId;
         }
         public IEnumerable<CancelledSales> GetCancelledSales(DateTime a_start, DateTime a_end)
         {
@@ -61,56 +64,143 @@ namespace Biskilog_Accounting.Server.Services
             }
         }
 
-        public IEnumerable<Dictionary<string, List<Tblcart>>> GetEmployeeSales(DateTime a_start, DateTime a_end)
+        public Dictionary<string, List<SaleItem>> GetEmployeeSales(DateTime a_start, DateTime a_end)
         {
-            throw new NotImplementedException();
+            Dictionary<string, List<SaleItem>> sales = new Dictionary<string, List<SaleItem>>();
+            if (m_comparisonMode)
+            {
+                var employeeSales = m_context.Tblcarts.Where(c => c.Date >= a_start && c.Date <= a_end).Select(e => e.Cashier).Distinct();
+
+                foreach (string employeeName in employeeSales)
+                {
+                    var list = (from a in employeeSales
+                                join c in m_context.Tblcarts on a equals c.Cashier into Sales
+                                from s in Sales
+                                group s by s.Transno into saleItem
+                                select new SaleItem
+                                {
+                                    Total = saleItem.Sum(c => c.Total),
+                                    Transno = saleItem.Key,
+                                    Cashier = employeeName,
+                                    Date = saleItem.First().Date,
+                                    Status = saleItem.First().Status,
+                                    BranchId = saleItem.First().BranchId
+                                }).ToList();
+                    sales.Add(employeeName, list);
+
+                }
+            }
+            else
+            {
+                var employeeSales = m_context.Tblcarts.Where(c => c.Date >= a_start && c.Date <= a_end && c.BranchId == m_activeBranch).Select(e => e.Cashier).Distinct().ToList();
+
+                foreach (var employeeName in employeeSales)
+                {
+                    var list = (from a in employeeSales
+                                join c in m_context.Tblcarts on a equals c.Cashier into Sales
+                                from s in Sales
+                                group s by s.Transno into saleItem
+                                select new SaleItem
+                                {
+                                    Total = saleItem.Sum(c => c.Total),
+                                    Transno = saleItem.Key,
+                                    Cashier = employeeName,
+                                    Date = saleItem.First().Date,
+                                    Status = saleItem.First().Status,
+                                    BranchId = saleItem.First().BranchId
+                                }).ToList();
+                    sales.Add(employeeName, list);
+                }
+            }
+            return sales;
         }
 
         public IEnumerable<InDebtCustomers> GetInDebtCustomers()
         {
             if (m_comparisonMode)
             {
-                return from c in m_context.Tblcustomers
+                var listDebts = m_context.Customeraccounts.Where(t => t.Balance < 0).OrderByDescending(d => d.Date).Select(t => t.CustomerId).Distinct().ToList();
-                       join a in m_context.Customeraccounts on c.CustomerId equals a.CustomerId into CustomerAccounts
+                foreach (var customerId in listDebts)
-                       from ac in CustomerAccounts.OrderByDescending(ac => ac.Date).Take(1).DefaultIfEmpty()
+                {
-                       where ac.Balance < 0
+                    yield return new InDebtCustomers
-                       orderby ac.Date descending
+                    {
-                       select new InDebtCustomers
+                        Customer = m_context.Tblcustomers.FirstOrDefault(i => i.CustomerId == customerId),
-                       {
+                        Debt = m_context.Customeraccounts.OrderByDescending(d => d.Date).FirstOrDefault(t => t.Balance < 0 && t.CustomerId == customerId).Balance,
-                           Customer = c,
+                    };
-                           Debt = ac != null ? ac.Balance : 0
+                }
-                       };
-
             }
             else
             {
-                return null;
+                var listDebts = m_context.Customeraccounts.Where(t => t.Balance < 0 && t.BranchId == m_activeBranch).OrderByDescending(d => d.Date).Select(t => t.CustomerId).Distinct().ToList();
+                foreach (var customerId in listDebts)
+                {
+                    yield return new InDebtCustomers
+                    {
+                        Customer = m_context.Tblcustomers.FirstOrDefault(i => i.CustomerId == customerId),
+                        Debt = m_context.Customeraccounts.OrderByDescending(d => d.Date).FirstOrDefault(t => t.Balance < 0 && t.CustomerId == customerId).Balance,
+                    };
+                }
             }
         }
 
-        public IEnumerable<ProductItem> GetMostPurchasedItem(DateTime a_start, DateTime a_end)
+        public IEnumerable<MostPurchasedItem> GetMostPurchasedItem(DateTime a_start, DateTime a_end)
         {
-            throw new NotImplementedException();
+            var items = (from s in m_context.Tblcarts
+                         join p in m_context.Tblproducts on s.Id equals p.Pcode
+                         where s.Date >= a_start && s.Date <= a_end
+                         group s by p into g
+                         orderby g.Count() descending
+                         select new MostPurchasedItem
+                         {
+                             ProductId = g.Key.Pcode,
+                             ProductName = g.Key.ProductName,
+                             NbrTimesSold = g.Count(),
+                             Revenue = g.Sum(s => s.Price)
+                         }).Take(50).ToList();
+            return items;
         }
 
         public IEnumerable<ProductItem> GetOutOfStockItems()
         {
-            //if (m_comparisonMode)
+            if (m_comparisonMode)
-            //{
+            {
-            //    return from r in m_context.Restocklevels
+                return (from item in m_context.Tblinventories
-            //           join i in m_context.Tblinventories on r.ProductId equals i.Pcode
+                        join p in m_context.Tblproducts on item.Pcode equals p.Pcode
-            //           join p in m_context.Tblproducts on i.Pcode equals p.Pcode
+                        join pu in m_context.Productaltunits on item.Pcode equals pu.Pcode into AltUnit
-            //           where i.Quantity == r.WarnLevel
+                        from au in AltUnit.DefaultIfEmpty()
-            //           select new ProductItem
+                        join rs in m_context.Restocklevels on item.Pcode equals rs.ProductId
-            //           {
+                        join un in m_context.Unitofmeasures on p.BaseUnit equals un.UnitCode
-            //               Product = p,
+                        where p.Status!.ToLower() != "inactive" &&
-            //               Stock = i,
+                        ((rs.WarnLevel >= item.Quantity && rs.Unit == p.BaseUnit) || (rs.WarnLevel >= (item.Quantity / au.QuantityUnit) &&
-            //               Unitofmeasure = 
+                       rs.Unit == au.UnitCode)
-            //           }
+                        )
-            //}
+                        select new ProductItem
-            //else { 
+                        {
-            //}
+                            Product = p,
-            return null;
+                            Stock = item,
+                            BaseUnit = un.Unitshort!
+                        });
+            }
+            else
+            {
+                return (from item in m_context.Tblinventories
+                        join p in m_context.Tblproducts on item.Pcode equals p.Pcode
+                        join pu in m_context.Productaltunits on item.Pcode equals pu.Pcode into AltUnit
+                        from au in AltUnit.DefaultIfEmpty()
+                        join rs in m_context.Restocklevels on item.Pcode equals rs.ProductId
+                        join un in m_context.Unitofmeasures on p.BaseUnit equals un.UnitCode
+                        where p.Status!.ToLower() != "inactive" && item.BranchId == m_activeBranch &&
+                        ((rs.WarnLevel >= item.Quantity && rs.Unit == p.BaseUnit) || (rs.WarnLevel >= (item.Quantity / au.QuantityUnit) &&
+                       rs.Unit == au.UnitCode)
+                        )
+                        select new ProductItem
+                        {
+                            Product = p,
+                            Stock = item,
+                            BaseUnit = un.Unitshort!
+                        });
+            }
+            //return null;
         }
 
         public IEnumerable<ProductPriceChange> GetPriceChanges(DateTime a_start, DateTime a_end)
@@ -119,7 +209,7 @@ namespace Biskilog_Accounting.Server.Services
             {
                 return from change in m_context.Tblpricechanges
                        join p in m_context.Tblproducts on change.Pcode equals p.Pcode
-                       where change.ChangeDate <= a_start && change.ChangeDate >= a_end
+                       where change.ChangeDate >= a_start && change.ChangeDate <= a_end
                        select new ProductPriceChange
                        {
                            BranchId = change.BranchId,
@@ -135,7 +225,7 @@ namespace Biskilog_Accounting.Server.Services
             {
                 return from change in m_context.Tblpricechanges
                        join p in m_context.Tblproducts on change.Pcode equals p.Pcode
-                       where change.ChangeDate <= a_start && change.ChangeDate >= a_end && change.BranchId == m_activeBranch
+                       where change.ChangeDate >= a_start && change.ChangeDate <= a_end && change.BranchId == m_activeBranch
                        select new ProductPriceChange
                        {
                            BranchId = change.BranchId,
@@ -161,5 +251,11 @@ namespace Biskilog_Accounting.Server.Services
                 return m_context.Tblcarts.Where(t => t.Date >= a_start && t.Date <= a_end && t.BranchId == m_activeBranch);
             }
         }
+
+        public void SetContraints(string a_token)
+        {
+            m_comparisonMode = m_tokenService.GetComparison(a_token)!.Value;
+            m_activeBranch = m_tokenService.GetBaseBranch(a_token)!;
+        }
     }
 }

Shared/CustomModels/MostPurchaseItem.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Biskilog_Accounting.Shared.CustomModels
+{
+    public class MostPurchasedItem
+    {
+        /// <summary>
+        /// Specifies the id of the product
+        /// </summary>
+        public string ProductId { get; set; }
+        /// <summary>
+        /// Specifies the name of the product 
+        /// </summary>
+        public string ProductName { get; set; }
+        /// <summary>
+        /// The total revenue generated from the sale
+        /// </summary>
+        public decimal? Revenue { get; set; }
+        /// <summary>
+        /// This is the number of times the item has been sold
+        /// </summary>
+        public int? NbrTimesSold { get; set; }
+
+    }
+}

Shared/CustomModels/ProductItem.cs

@@ -11,6 +11,6 @@ namespace Biskilog_Accounting.Shared.CustomModels
     {
         public Tblproduct? Product { get; set; }
         public Tblinventory? Stock { get; set; }
-        public List<Unitofmeasure> Unitofmeasure { get; set; } = new List<Unitofmeasure>();
+        public string BaseUnit { get;set; } = string.Empty;
     }
 }

Shared/CustomModels/SaleItem.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Biskilog_Accounting.Shared.CustomModels
+{
+    public class SaleItem
+    {
+        public string? Transno { get; set; }
+
+        public DateTime? Date { get; set; }
+
+        public string? Cashier { get; set; }
+        public string? Status { get; set; }
+        public decimal? Total { get; set; }
+        public string BranchId { get; set; } = null!;
+
+        public string Customer { get; set; } = "Walk-In Purchase"!;
+    }
+}

Shared/Interfaces/IAnalytics.cs

@@ -27,7 +27,7 @@ namespace Biskilog_Accounting.Shared.Interfaces
         /// <param name="a_start"></param>
         /// <param name="a_end"></param>
         /// <returns></returns>
-        IEnumerable<ProductItem> GetMostPurchasedItem(DateTime a_start, DateTime a_end);
+        IEnumerable<MostPurchasedItem> GetMostPurchasedItem(DateTime a_start, DateTime a_end);
         /// <summary>
         /// Fetches a collection of cancelled transaction within a specified date range
         /// </summary>
@@ -41,7 +41,7 @@ namespace Biskilog_Accounting.Shared.Interfaces
         /// <param name="a_start"></param>
         /// <param name="a_end"></param>
         /// <returns>A dictionary of transactions made by employees with employee name as key</returns>
-        IEnumerable<Dictionary<string, List<Tblcart>>> GetEmployeeSales(DateTime a_start, DateTime a_end);
+        Dictionary<string, List<SaleItem>> GetEmployeeSales(DateTime a_start, DateTime a_end);
         /// <summary>
         /// Fetches a collection of product price changes with a specified date range
         /// </summary>
@@ -49,5 +49,6 @@ namespace Biskilog_Accounting.Shared.Interfaces
         /// <param name="a_end"></param>
         /// <returns></returns>
         IEnumerable<ProductPriceChange> GetPriceChanges(DateTime a_start, DateTime a_end);
+        void SetContraints(string a_token);
     }
 }