Attribute VB_Name = "BestSalesEachMonth"
Option Explicit

Sub Helloworld()
    Debug.Print "helloworld"
End Sub

' get the integer month from date
Function GetMonthFrDate(ByVal date_string As String) As Integer
    Dim intMonth As Integer
    Dim dt As String
    dt = DateValue(date_string)
    intMonth = month(dt)
    GetMonthFrDate = intMonth
End Function

' get the integer quarter from date
Function GetQuarterFrDate(ByVal date_string As String) As Integer
    Dim intQuarter As Integer
    Dim intMonth As Integer
    Dim dt As String

    dt = DateValue(date_string)
    intMonth = month(dt)

    GetQuarterFrDate = Int((intMonth - 1) / 3) + 1
End Function

Function CountFigures(ws As Worksheet, ByVal start_row As Integer, ByVal last_row As Integer)
    Dim SalesNewCaseByMonth As Integer
    Dim SalesCollapsedCaseByMonth As Integer
    Dim i, j As Integer

    ' variable for result
    Dim monthly_total_sell, month_total_commission
    Set monthly_total_sell = CreateObject("Scripting.Dictionary")
    Set month_total_commission = CreateObject("Scripting.Dictionary")

    Dim team_a_best, team_a_best_value, team_a_best_name, team_a_best_commission
    Set team_a_best = CreateObject("Scripting.Dictionary")
    Set team_a_best_value = CreateObject("Scripting.Dictionary")
    Set team_a_best_name = CreateObject("Scripting.Dictionary")
    Set team_a_best_commission = CreateObject("Scripting.Dictionary")

    Dim team_b_best, team_b_best_value, team_b_best_name, team_b_best_commission
    Set team_b_best = CreateObject("Scripting.Dictionary")
    Set team_b_best_value = CreateObject("Scripting.Dictionary")
    Set team_b_best_name = CreateObject("Scripting.Dictionary")
    Set team_b_best_commission = CreateObject("Scripting.Dictionary")

    For j = 1 To 12
        team_a_best(CStr(j)) = 0
        team_b_best(CStr(j)) = 0
    Next j

    For i = start_row To last_row
        Dim date_value As String
        Dim agent_name As String
        Dim team As String
        Dim temp_key As String
        Dim selling_price, commision_pct, commision_value As Double
        Dim int_month, int_quarter As Integer

        date_value = ReadCellValue("B" & CStr(i))
        int_month = GetMonthFrDate(date_value)
        int_quarter = GetQuarterFrDate(date_value)

        agent_name = ReadCellValue("C" & CStr(i))
        team = ReadCellValue("D" & CStr(i))
        selling_price = CDbl(ReadCellValue("E" & CStr(i)))
        commision_pct = CDbl(ReadCellValue("F" & CStr(i)))
        commision_value = selling_price * commision_pct

        temp_key = agent_name & "," & int_month
        ' create if not found agent_name
        If (Not (IsEmpty(temp_key)) And Not (monthly_total_sell.exists(temp_key))) Then
            For j = 1 To 12
                monthly_total_sell(agent_name + "," + CStr(j)) = 0
            Next j
        End If
        monthly_total_sell(agent_name + "," + CStr(int_month)) = monthly_total_sell(agent_name + "," + CStr(int_month)) + selling_price
        month_total_commission(agent_name + "," + CStr(int_month)) = month_total_commission(agent_name + "," + CStr(int_month)) + commision_value

        ' is in team A?
        If (CheckSalesIsInTeamA(agent_name)) Then
            If (monthly_total_sell(agent_name + "," + CStr(int_month)) > team_a_best(CStr(int_month))) Then
                team_a_best_name(CStr(int_month)) = agent_name
                team_a_best_value(CStr(int_month)) = monthly_total_sell(agent_name + "," + CStr(int_month))
                team_a_best_commission(CStr(int_month)) = month_total_commission(agent_name + "," + CStr(int_month))
            End If
        End If

        ' is in team B?
        If (CheckSalesIsInTeamB(agent_name)) Then
            If (monthly_total_sell(agent_name + "," + CStr(int_month)) > team_b_best(CStr(int_month))) Then
                team_b_best_name(CStr(int_month)) = agent_name
                team_b_best_value(CStr(int_month)) = monthly_total_sell(agent_name + "," + CStr(int_month))
                team_b_best_commission(CStr(int_month)) = month_total_commission(agent_name + "," + CStr(int_month))
            End If
        End If

    Next i

    CountFigures = Array(monthly_total_sell, _
        team_a_best_name, _
        team_a_best_value, _
        team_a_best_commission, _
        team_b_best_name, _
        team_b_best_value, _
        team_b_best_commission _
        )
End Function

Function Run(ws As Worksheet)
    'Dim ws As Worksheet
    'Set ws = ThisWorkbook.Sheets("Sheet1")

    Dim row_count As Integer
    Dim rw As Variant
    Dim count_figures_result As Variant

    Dim start_row, last_row As Integer
    start_row = 2
    last_row = getLastRow(start_row)
    count_figures_result = CountFigures(ws, start_row, last_row)

    Run = count_figures_result
    Debug.Print "done"
End Function

' get the last row for a given xls sheet
Function getLastRow(ByVal start_row As Integer)
    Dim last_row As Boolean
    Dim last_check_row As Integer
    Dim scan_row As Integer
    Dim i As Integer
    Dim cell_value_1 As String


    Dim next_row_1 As Integer

    scan_row = start_row
    last_check_row = 9999

    For i = start_row To last_check_row
        scan_row = i
        last_row = True

        next_row_1 = i + 1

        cell_value_1 = ReadCellValue("A" & CStr(next_row_1))

        If (cell_value_1 <> "") Then
            last_row = False
        End If

        If (last_row = True) Then
          'Debug.Print "last row found"
          Exit For
        End If
    Next i

    getLastRow = scan_row

End Function

' get the value from cell for a given address
Function ReadCellValue(cell_addr As String)

    ReadCellValue = Worksheets("Sheet1").Range(cell_addr).Value

End Function


' canned method to open excel file
Function OpenFile(sPath As String)
    Dim wb As Workbook
    Set wb = Workbooks.Open(sPath)

    Dim count_figures_result As Variant

    If Not (wb.Sheets("Sheet1") Is Nothing) Then
        count_figures_result = BestSalesEachMonth.Run(wb.Sheets("Sheet1"))
    End If

    OpenFile = count_figures_result

    wb.Close savechanges:=False
End Function