#!/usr/bin/env pwsh

$Env:PATH = "$PSScriptRoot\_generator\site;$PSScriptRoot\_generator\vips;$Env:PATH"

# Check if ConsoleGuiTools are available.
$cgt = Get-Module -ListAvailable Microsoft.PowerShell.ConsoleGuiTools
if ($cgt -eq $null) {
  Write-Output 'Missing ConsoleGuiTools, please make sure you have PowerShell 7 and run the following command as an administrator:'
  Write-Output '  Install-Module Microsoft.PowerShell.ConsoleGuiTools'
  Read-Host
  Exit 1
}

function FetchGenerator {
  $tempFile = New-TemporaryFile
  $url = 'https://temp.ogion.cz/site-zahradka.zip'
  Invoke-WebRequest -Uri $url -OutFile $tempFile
  Expand-Archive $tempFile -DestinationPath '_generator' -Force
}

function EnsureGenerator {
  if (!(Test-Path '_generator/site/site.exe')) {
    FetchGenerator
  }
}

function SiteWatch {
  EnsureGenerator
  site watch
}

function SiteCheck {
  EnsureGenerator
  site check
  Read-Host
}

function SiteBuild {
  EnsureGenerator
  site build
  Read-Host
}

function SiteRebuild {
  EnsureGenerator
  site rebuild
  Read-Host
}

function UpdateGenerator {
  FetchGenerator
  Read-Host
}

function Terminate {
  [Terminal.Gui.Application]::RequestStop()
}

$action = $null

function MakeUi {
  Import-Module Microsoft.PowerShell.ConsoleGuiTools
  $module = (Get-Module Microsoft.PowerShell.ConsoleGuiTools -List).ModuleBase
  Add-Type -Path (Join-path $module Terminal.Gui.dll)

  [Terminal.Gui.Application]::Init()
  $window = [Terminal.Gui.Window]::new()
  $window.Title = 'site: strom-roku-2023.krk-litvinov.cz'
  [Terminal.Gui.Application]::Top.Add($window)

  $watchButton = [Terminal.Gui.Button]::new()
  $watchButton.Text = 'watch: Start test server and watch for changes'
  $watchButton.add_Clicked({
    $script:action = $function:SiteWatch
    Terminate
  })
  $window.Add($watchButton)

  $checkButton = [Terminal.Gui.Button]::new()
  $checkButton.Text = 'check: Check links'
  $checkButton.add_Clicked({
    $script:action = $function:SiteCheck
    Terminate
  })
  $checkButton.Y = [Terminal.Gui.Pos]::Bottom($watchButton)
  $window.Add($checkButton)

  $buildButton = [Terminal.Gui.Button]::new()
  $buildButton.Text = 'build: Update output directory'
  $buildButton.add_Clicked({
    $script:action = $function:SiteBuild
    Terminate
  })
  $buildButton.Y = [Terminal.Gui.Pos]::Bottom($checkButton) + 1
  $window.Add($buildButton)

  $rebuildButton = [Terminal.Gui.Button]::new()
  $rebuildButton.Text = 'rebuild: Rebuild site from scratch'
  $rebuildButton.add_Clicked({
    $result = [Terminal.Gui.MessageBox]::Query('Rebuild', "Do you want to rebuild the web site output from scratch?`nIt can take a minute", @('Yes', 'No'))
    if ($result -eq 0) {
      $script:action = $function:SiteRebuild
      Terminate
    }
  })
  $rebuildButton.Y = [Terminal.Gui.Pos]::Bottom($buildButton)
  $window.Add($rebuildButton)

  $updateButton = [Terminal.Gui.Button]::new()
  $updateButton.Text = 'Update the site program'
  $updateButton.add_Clicked({
    $script:action = $function:UpdateGenerator
    Terminate
  })
  $updateButton.Y = [Terminal.Gui.Pos]::Bottom($rebuildButton) + 1
  $window.Add($updateButton)

  [Terminal.Gui.Application]::Run()
  [Terminal.Gui.Application]::Shutdown()
}

MakeUi

if ($action -ne $null) {
  & $action
}