Get site collection and sub site's Full control users and site size from multiple site collection

<#
******------------------------------------------------------------------------------------------------------------------------------******
Author          -> Shiv Mangal Singh
Date            -> 18th Feb - 2017
Description     -> This Script will generate a report of size of all sites/ sub sites with Full Control users permission from Multiple Site Collection with Site URL, Title Site's Size,
                   Permission Type, Permission and Login Name details.

Site Collection Name --> $SiteColl = Get-Content "D:\contosoMW_Team\Shiv\PS\SiteColl_SubSites.txt" | Read All Site Collections name from SiteColl_SubSites.txt file

# Report generated  directory name / Report location
$FileUrl =$currentdir +"\"+ "Sites_Size_Report_" +$currentdatetime+ ".CSV"

******------------------------------------------------------------------------------------------------------------------------------******
 #>

Add-PsSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue

# Read All Site Collections name from SiteColl_SubSites.txt file
$SiteColl = Get-Content "D:\contosoMW_Team\Shiv\PS\SiteColl_SubSites.txt"
#set location for report
Set-Location "D:\contosoMW_Team\Shiv\PS"
$currentdir =Convert-Path(Get-Location -PSProvider filesystem)
# get current date
$currentdatetime = Get-Date -Format "yyyy-MM-dd.hh-mm-ss"
# File directory for report
$FileUrl =$currentdir +"\"+ "Sites_Size_Report_" +$currentdatetime+ ".CSV"

    #Write CSV- TAB Separated File) Header
    "URL `t Title `t Size in MB `t PermissionType `t Permissions  `t LoginName" | Out-File $FileUrl
     
    #Loop throuh all Site collection level
     foreach($sitename in $SiteColl)
     {
     $site = Get-SPSite $sitename
 
      # Start Calculate Folder Size
         Function CalculateFolderSize($Folder)
          {
            [long]$FolderSize = 0

            foreach ($File in $Folder.Files)
            {
           #Get File Size
                $FolderSize += $file.TotalLength;
 
            #Get the Versions Size
                foreach ($FileVersion in $File.Versions)
                {
                    $FolderSize += $FileVersion.Size
                }
            }
            #Iterate through all subfolders
            foreach ($SubFolder in $Folder.SubFolders)
            {
            #Call the function recursively
                $FolderSize += CalculateFolderSize $SubFolder
            }
            return $FolderSize
           }
       # End calculate Folder name

     #Loop throuh all Sub Sites
        foreach($Web in $site.AllWebs)
        {  
        #
        #Call function to calculate Folder Size
         [long]$WebSize = CalculateFolderSize($Web.RootFolder)
         #Get Recycle Bin Size
            foreach($RecycleBinItem in $Web.RecycleBin)
                {
                   $WebSize += $RecycleBinItem.Size
                }
                 $sizeinMB=$WebSize/1024/1024
                 $Size = [Math]::Round($sizeinMB, 2)
                 Write-Host  $web.Url ":`t" $Size "MB"
       
              #Iterate through all SPRoleAssignments on the web
               foreach($WebRoleAssignment in $Web.RoleAssignments )
               {
     
              #Is it a User Account?
                  if($WebRoleAssignment.Member.userlogin)  
                   {
                    $WebUserPermissions=@()
                     foreach ($RoleDefinition  in $WebRoleAssignment.RoleDefinitionBindings)
                      {
                            $FullPerm ="Full Control"
                            if($RoleDefinition.Name.Contains($FullPerm))
                            {
                             $WebUserPermissions += $RoleDefinition.Name +";"
                             # Send the Data to Filedirectory/Report file
                             "$($Web.Url)  `t $($Web.Title)`t $Size `t Direct Permission `t $($WebUserPermissions)  `t $($WebRoleAssignment.Member.LoginName)" | Out-File $FileUrl -Append
                         
                             }
                       }
                }
                #Its a SharePoint Group, So search inside the group and check if the user is member of that group
                else
                 {
                       foreach($user in $WebRoleAssignment.member.users)
                       {
                            #Get the Group's Permissions on site
                             $WebGroupPermissions=@()
                              foreach ($RoleDefinition  in $WebRoleAssignment.RoleDefinitionBindings)
                                {
                                # $grpControlFullPerm ="Full": We have taken this variable to get the Full control permission or wherever the custom permissions name alias Full
                                   $grpControlFullPerm ="Full"
                                    if($RoleDefinition.Name.Contains($grpControlFullPerm))
                                        {
                                         $WebGroupPermissions += $RoleDefinition.Name +";"
                                         #Send the Data to Filedirectory/Report file
                                          "$($Web.Url) `t $($Web.Title) `t $Size `t $($WebRoleAssignment.Member.Name) `t $($WebGroupPermissions) `t $($user.LoginName)" | Out-File $FileUrl -Append
                                       
                                        }
                                                                     
                                 }
                          write-host "Group has these permissions: " $WebGroupPermissions
                        }
                   }
                }
         }
     }