[CmdletBinding()]
param(
[parameter(Mandatory=$false, Position=1)]
[ValidateNotNullOrEmpty()] 
[string]$serverName,

[parameter(Mandatory=$false, Position=2)]
[ValidateNotNullOrEmpty()] 
[string]$username,

[parameter(Mandatory=$false, Position=3)]
[ValidateNotNullOrEmpty()] 
[string]$password,

[parameter(Mandatory=$false, Position=4)]
[ValidateNotNullOrEmpty()] 
[string]$Prompt
)


###Check to see if user is Admin

$isAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(`
        [Security.Principal.WindowsBuiltInRole] "Administrator")
        
if ($isAdmin -eq 'True') {

$setupLog = "c:\tmp\lcr_setup_log.txt"
Start-Transcript -Path $setupLog -Append
$startTime = Get-Date
Write-Host 
("Start time: $startTime") 


##Change Values here for Different Solutions 
$SolutionName = "Loans"
$SolutionFullName = "r-server-loan-credit-risk" 
$Shortcut = "SolutionHelp.url"


### DON'T FORGET TO CHANGE TO MASTER LATER...
$Branch = "master" 
$InstallR = 'Yes'  ## If Solution has a R Version this should be 'Yes' Else 'No'
$InstallPy = 'No' ## If Solution has a Py Version this should be 'Yes' Else 'No'
$SampleWeb = 'No' ## If Solution has a Sample Website  this should be 'Yes' Else 'No' 
$EnableFileStream = 'No' ## If Solution Requires FileStream DB this should be 'Yes' Else 'No' 
$isMixedMode = 'No'
$Prompt = 'N'


###These probably don't need to change , but make sure files are placed in the correct directory structure 
$solutionTemplateName = "Solutions"
$solutionTemplatePath = "C:\" + $solutionTemplateName
$checkoutDir = $SolutionName
$SolutionPath = $solutionTemplatePath + '\' + $checkoutDir
$desktop = "C:\Users\Public\Desktop\"
$scriptPath = $SolutionPath + "\Resources\ActionScripts\"
$SolutionData = $SolutionPath + "\Data\"


if ($SampleWeb -eq "Yes")             
    {    
    if([string]::IsNullOrEmpty($username)) 
        {
        $Credential = $Host.ui.PromptForCredential("Need credentials", "Please supply an user name and password to configure SQL for mixed authentication.", "", "")
        $username = $credential.Username
        $password = $credential.GetNetworkCredential().password 
        }  
    }


#################################################################
##DSVM Does not have SQLServer Powershell Module Install or Update 
#################################################################


Write-Host 
("Installing SQLServer Power Shell Module or Updating to latest")



if (Get-Module -ListAvailable -Name SQLServer) 
    {Update-Module -Name "SQLServer" -MaximumVersion 21.0.17199}
Else 
    {Install-Module -Name SqlServer -RequiredVersion 21.0.17199 -Scope AllUsers -AllowClobber -Force}

#Set-PSRepository -Name PSGallery -InstallationPolicy Untrusted
    Import-Module -Name SqlServer -MaximumVersion 21.0.17199 -Force


##########################################################################
#Clone Data from GIT
##########################################################################


$clone = "git clone --branch $Branch --single-branch https://github.com/Microsoft/$SolutionFullName $solutionPath"

if (Test-Path $SolutionPath) {Write-Host " Solution has already been cloned"}
ELSE {Invoke-Expression $clone}

##If ($InstalR -eq 'Yes')
##{
Write-Host 
("Installing R Packages")
Set-Location "C:\Solutions\$SolutionName\Resources\ActionScripts\"
# install R Packages
Rscript install.R 
##}


#################################################################
##DSVM Does not have SQLServer Powershell Module Install or Update 
#################################################################


## if FileStreamDB is Required Alter Firewall ports for 139 and 445
if ($EnableFileStream -eq 'Yes')
    {
    netsh advfirewall firewall add rule name="Open Port 139" dir=in action=allow protocol=TCP localport=139
    netsh advfirewall firewall add rule name="Open Port 445" dir=in action=allow protocol=TCP localport=445
    Write-Host 
    ("Firewall as been opened for filestream access")
    }
If ($EnableFileStream -eq 'Yes')
    {
    Set-Location "C:\Program Files\Microsoft\ML Server\PYTHON_SERVER\python.exe" 
    .\setup.py install
    Write-Host 
    ("Py Instal has been updated to latest version")
    }


############################################################################################
#Configure SQL to Run our Solutions 
############################################################################################

#Write-Host -ForegroundColor 'Cyan' " Switching SQL Server to Mixed Mode"

    if([string]::IsNullOrEmpty($serverName))   
    {$Query = "SELECT SERVERPROPERTY('ServerName')"
    $si = Invoke-Sqlcmd  -Query $Query
    $si = $si.Item(0)}
    else 
    {$si = $serverName}
    $serverName = $si

Write-Host 
("Servername set to $serverName")


### Change Authentication From Windows Auth to Mixed Mode 
if ($isMixedMode -eq 'Yes') {
    Invoke-Sqlcmd -Query "EXEC xp_instance_regwrite N'HKEY_LOCAL_MACHINE', N'Software\Microsoft\MSSQLServer\MSSQLServer', N'LoginMode', REG_DWORD, 2;" -ServerInstance "LocalHost" 

    $Query = "CREATE LOGIN $username WITH PASSWORD=N'$password', DEFAULT_DATABASE=[master], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF"
    Invoke-Sqlcmd -Query $Query -ErrorAction SilentlyContinue

    $Query = "ALTER SERVER ROLE [sysadmin] ADD MEMBER $username"
    Invoke-Sqlcmd -Query $Query -ErrorAction SilentlyContinue
}


Write-Host 
("Configuring SQL to allow running of External Scripts")
### Allow Running of External Scripts , this is to allow R Services to Connect to SQL
Invoke-Sqlcmd -Query "EXEC sp_configure  'external scripts enabled', 1"

### Force Change in SQL Policy on External Scripts 
Invoke-Sqlcmd -Query "RECONFIGURE WITH OVERRIDE" 
Write-Host 
("SQL Server Configured to allow running of External Scripts")

### Enable FileStreamDB if Required by Solution 
if ($EnableFileStream -eq 'Yes') 
    {
# Enable FILESTREAM
        $instance = "MSSQLSERVER"
        $wmi = Get-WmiObject -Namespace "ROOT\Microsoft\SqlServer\ComputerManagement14" -Class FilestreamSettings | where-object {$_.InstanceName -eq $instance}
        $wmi.EnableFilestream(3, $instance)
        Stop-Service "MSSQ*" -Force
        Start-Service "MSSQ*"
 
        Set-ExecutionPolicy Unrestricted
        #Import-Module "sqlps" -DisableNameChecking
        Invoke-Sqlcmd "EXEC sp_configure filestream_access_level, 2"
        Invoke-Sqlcmd "RECONFIGURE WITH OVERRIDE"
        Stop-Service "MSSQ*"
        Start-Service "MSSQ*"
    }
ELSE
    { 
    Write-Host 
    ("Restarting SQL Services")
    ### Changes Above Require Services to be cycled to take effect 
    ### Stop the SQL Service and Launchpad wild cards are used to account for named instances  
    Restart-Service -Name "MSSQ*" -Force
}



####Run Configure SQL to Create Databases and Populate with needed Data
$ConfigureSql = "C:\Solutions\$SolutionName\Resources\ActionScripts\ConfigureSQL.ps1  $ServerName $SolutionName $InstallPy $InstallR $Prompt"
Invoke-Expression $ConfigureSQL 

Write-Host 
("Done with configuration changes to SQL Server")


Write-Host 
("Installing latest Power BI")
# Download PowerBI Desktop installer
Start-BitsTransfer -Source "https://go.microsoft.com/fwlink/?LinkId=521662&clcid=0x409" -Destination powerbi-desktop.msi

# Silently install PowerBI Desktop
msiexec.exe /i powerbi-desktop.msi /qn /norestart  ACCEPT_EULA=1

if (!$?) {
    Write-Host -ForeGroundColor Red " Error installing Power BI Desktop. Please install latest Power BI manually."
}


##Create Shortcuts and Autostart Help File 
Copy-Item "$ScriptPath\$Shortcut" C:\Users\Public\Desktop\
Copy-Item "$ScriptPath\$Shortcut" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\"
Write-Host  
("Help Files Copied to Desktop")

$WsShell = New-Object -ComObject WScript.Shell
$shortcut = $WsShell.CreateShortcut($desktop + $checkoutDir + ".lnk")
$shortcut.TargetPath = $solutionPath
$shortcut.Save()

# install modules for sample website
if($SampleWeb  -eq "Yes")
{
Set-Location $SolutionPath\Website\
.\npm install
(Get-Content $SolutionPath\Website\server.js).replace('XXYOURSQLPW', $password) | Set-Content $SolutionPath\Website\server.js
(Get-Content $SolutionPath\Website\server.js).replace('XXYOURSQLUSER', $username) | Set-Content $SolutionPath\Website\server.js
}

$endTime = Get-Date

Write-Host 
("$SolutionFullName Workflow Finished Successfully!")
$Duration = New-TimeSpan -Start $StartTime -End $EndTime 
Write-Host 
("Total Deployment Time = $Duration")

Stop-Transcript

##Launch HelpURL 
Start-Process "https://microsoft.github.io/$SolutionFullName/Typical.html"



    ## Close Powershell if not run on 
   ## if ($baseurl)
   Exit-PSHostProcess
   EXIT
}

ELSE 
{ 
   Write-Host "To install this Solution you need to run Powershell as an Administrator. This program will close automatically in 20 seconds"
   Start-Sleep -s 20
## Close Powershell 
Exit-PSHostProcess
EXIT }