Tries to retrieve a "number of views" -number from a Google My Maps map and write it to a log file (map_log.csv at $env:temp) - a Windows PowerShell script.

Get-MapUsage.ps1

<#
Get-MapUsage.ps1
#>


# Description: Tries to retrieve a "number of views" -number from a Google My Maps map and write it to a log file (map_log.csv at $env:temp).

# Example URL: https://www.google.com/maps/d/viewer?mid=QuiteAFewRandomLettersAndNumbers
# Note: Please replace the string below (between the single quotation marks) with a correct Google My Maps mid, which could be
# either (A) the string after = symbol in the original URL
# or (B) the string after = symbol until the first & symbol (not including either = or & characters in the original URL)
$google_my_maps_mid = 'QuiteAFewRandomLettersAndNumbers'




# Check if the computer is connected to the Internet
# Credit: ps1 "Test Internet connection": http://powershell.com/cs/blogs/tips/archive/2011/05/04/test-internet-connection.aspx
$empty_line = ""
If (([Activator]::CreateInstance([Type]::GetTypeFromCLSID([Guid]'{DCB00C01-570F-4A9B-8D69-199FDBA5723B}')).IsConnectedToInternet) -eq $false) {
    $empty_line | Out-String
    Return "The Internet connection doesn't seem to be working. Exiting without checking any Google My Maps usage statistics."
} Else {
    $path = $env:temp
    # $timestamp = Get-Date -Format g
    $timestamp = Get-Date -Format "d.M.yyyy HH:mm"
    $start_time = Get-Date -Format HH:mm:ss
    $empty_line | Out-String
    $statistics = @()
    $url = "https://www.google.com/maps/d/viewer?mid=$google_my_maps_mid"
    $download_text = "$start_time - Reading a Google My Maps web page at $url"
    Write-Output $download_text
} # Else




                # Try to retrieve a Google My Maps web page as a string
                Try {
                        If ($PSVersionTable.PSVersion.Major -ge 3) {
                            # Use Invoke-WebRequest cmdlet with Windows PowerShell 3.0 and with above versions of Windows PowerShell.
                            $raw_map = Invoke-WebRequest $url
                            $data = $raw_map.Content
                        } Else {
                            # Use WebClient.DownloadString Method (NET Framework 2.0 and above) with older versions of Windows PowerShell.
                            $web_crawler = New-Object System.Net.WebClient
                            $data = $web_crawler.DownloadString($url)
                        } # Else (If $PSVersionTable.PSVersion.Major)
                } Catch {
                    $empty_line | Out-String
                    Write-Warning $_.Exception
                    $help_text = "Please double check that the Google My Maps MID string is typed correctly on line 12 in this Get-MapUsage.ps1 script."
                    $empty_line | Out-String
                    Write-Output $help_text
                    $empty_line | Out-String
                    Exit
                } # Try




# Extract the number of views from the data
# Credit: http://www.lazywinadmin.com/2014/09/powershell-tip-escape-regex.html
$string = [string]'kml?mid\\u003d' + $google_my_maps_mid + '\",'
$raw_number = ($data -split [System.Text.RegularExpressions.Regex]::Escape($string))[-1]
$regex = $raw_number -match "\d+"
$number = $matches | Select-Object -ExpandProperty Values


                $raw_date = ($timestamp).Split(" ")[0]
                $day = ($raw_date).Split(".")[0]
                $month = ($raw_date).Split(".")[1]
                $year = ($raw_date).Split(".")[2]

                $time = (($timestamp).Split(" ")[-1]).Replace(".",":")
                $hour = ($time).Split(":")[0]
                $minute = ($time).Split(":")[1]


                            $statistics += $obj_stats = New-Object -TypeName PSCustomObject -Property @{
                                'Date'          = $timestamp
                                'Year'          = $year
                                'Month'         = $month
                                'Day'           = $day
                                'Hour'          = $hour
                                'Minute'        = $minute
                                'Time'          = $time
                                'Number'        = $number
                            } # New-Object


                $statistics.PSObject.TypeNames.Insert(0,"Statistics")
                $statistics_selection = $statistics | Select-Object 'Date','Year','Month','Day','Hour','Minute','Time','Number'




If ($number -ne $null) {

    # Make a log entry
    # Note: Append parameter of Export-Csv was introduced in PowerShell 3.0.
    # Source: http://stackoverflow.com/questions/21048650/how-can-i-append-files-using-export-csv-for-powershell-2
    # Source: https://blogs.technet.microsoft.com/heyscriptingguy/2011/11/02/remove-unwanted-quotation-marks-from-csv-files-by-using-powershell/
    $logfile_path = "$path\map_log.csv"
    $empty_line | Out-String
    $end_time = Get-Date -Format HH:mm:ss
    $log_text = "$end_time - Writing the logfile at $logfile_path"
    Write-Output $log_text
    If ((Test-Path $logfile_path) -eq $false) {
        $statistics_selection | Export-Csv $logfile_path -Delimiter ';' -NoTypeInformation -Encoding UTF8
    } Else {
        # $statistics_selection | Export-Csv $logfile_path -Delimiter ';' -NoTypeInformation -Encoding UTF8 -Append
        $statistics_selection | ConvertTo-Csv -Delimiter ';' -NoTypeInformation | Select-Object -Skip 1 | Out-File -FilePath $logfile_path -Append -Encoding UTF8
        (Get-Content $logfile_path) | ForEach-Object { $_ -replace ('"', '') } | Out-File -FilePath $logfile_path -Force -Encoding UTF8
    } # Else (If Test-Path $logfile_path)

    $empty_line | Out-String
    Write-Output $number
    $empty_line | Out-String

} Else {
    $continue = $true
} # If $number -ne $null

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