$root = "C:\Users\dionmoustos\Projects\pokefirered\"

Get-ChildItem -Path $root -Recurse -File -Filter "scripts.inc" |
ForEach-Object {
    Write-Host "Processing: $($_.FullName)"

    # ----------------------------
    # Read entire file as one string
    # ----------------------------
    $content = Get-Content -Path $_.FullName -Raw
    $new = $content

    # ----------------------------
    # Regex pattern (PowerShell-safe)
    # Your pattern:
    # [a-zA-Z_0-9]+::(\n\t[a-zA-Z_0-9 ,]+)+
    # ----------------------------
    $pattern = '[a-zA-Z_0-9]+::(\r?\n\t[a-zA-Z_0-9 ,]+)+'

    # ----------------------------
    # Extract matches as array of multiline strings
    # ----------------------------
    $matches = [regex]::Matches($content, $pattern)

    $array = @()
    foreach ($m in $matches) {
        $array += $m.Value
    }

    # ----------------------------
    # Do replacements on original string
    # (example transformation per item)
    # ----------------------------
    foreach ($item in $array) {
        if ($item -match '^\s*([A-Za-z0-9_]+)::\s*\r?\n\s*trainerbattle_single\s+([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+)\r?\n\s*msgbox\s+([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+)\r?\n\s*end') {
            $eventScript = $matches[1]
            $trainer = $matches[2]
            $introText = $matches[3]
            $defeatText = $matches[4]
            $postbattle = $matches[5]
            $messagebox = $matches[6]

            $replacement = "$eventScript::
    trainerbattle_single $trainer, $introText, $defeatText
    specialvar VAR_RESULT, ShouldTryRematchBattle
    goto_if_eq VAR_RESULT, TRUE, $eventScript`Rematch
    msgbox $postbattle, $messagebox
    end

$($eventScript)Rematch::
    trainerbattle_rematch $trainer, $introText, $defeatText
    msgbox $postbattle, $messagebox
    end"

            $content = $content -replace [regex]::Escape($item), $replacement
        } elseif ($item -match '^\s*([A-Za-z0-9_]+)::\s*\r?\n\s*trainerbattle_double\s+([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+)\r?\n\s*msgbox\s+([A-Za-z0-9_]+),\s*([A-Za-z0-9_]+)\r?\n\s*end') {
            $eventScript = $matches[1]
            $trainer = $matches[2]
            $introText = $matches[3]
            $defeatText = $matches[4]
            $notenoughmons = $matches[5]
            $postbattle = $matches[6]
            $messagebox = $matches[7]

            $replacement = "$eventScript::
    trainerbattle_double $trainer, $introText, $defeatText, $notenoughmons
    specialvar VAR_RESULT, ShouldTryRematchBattle
    goto_if_eq VAR_RESULT, TRUE, $eventScript`Rematch
    msgbox $postbattle, $messagebox
    end

$($eventScript)Rematch::
    trainerbattle_rematch_double $trainer, $introText, $defeatText, $notenoughmons
    msgbox $postbattle, $messagebox
    end"
            
            $content = $content -replace [regex]::Escape($item), $replacement
        }

    }

    # ----------------------------
    # Write back to file
    # ----------------------------
    if($new -ne $content) {
        Set-Content -Path $_.FullName -Value $content
        Write-Host "Updated: $($_.FullName)"
    }
}