#Global settings
. "../Settings.ps1"

# Function to extract version number from filename
function Extract-VersionNumber($filename) {
    if ($filename -match "known-hashes-v(\d+\.\d+)\.encrypted\.zip") {
        return $matches[1]
    }
    return $null
}

# Get the list of available files (assuming a directory listing is available)
$response = Invoke-WebRequest -Uri $baseUrl
$files = $response.Links | Where-Object { $_.href -like "known-hashes-v*.encrypted.zip" } | Select-Object -ExpandProperty href

# Determine the latest version
$latestVersion = "0.0"
$latestFile = $null
foreach ($file in $files) {
    $version = Extract-VersionNumber $file
    if ([version]$version -gt [version]$latestVersion) {
        $latestVersion = $version
        $latestFile = $file
    }
}

# Check local file version
$localVersion = "0.0"
if (Test-Path "$localFilePath.encrypted") {
    $localVersion = Extract-VersionNumber (Get-Item "$localFilePath.encrypted").Name
}

# Download and extract if the online version is newer
if ([version]$latestVersion -gt [version]$localVersion) {
    $downloadUrl = $baseUrl + $latestFile
    $localZipPath = "$localFilePath-v$latestVersion.encrypted.zip"
    Invoke-WebRequest -Uri $downloadUrl -OutFile $localZipPath

    # Ask for the ZIP password
    Write-Host "Enter the password to unzip the file:"
    $zipPassword = Read-Host -AsSecureString

    # Unzip the file (requires .NET 4.5 or higher and external tools like 7-Zip)
    $zipPasswordPlainText = [Runtime.InteropServices.Marshal]::PtrToStringBSTR([Runtime.InteropServices.Marshal]::SecureStringToBSTR($zipPassword))
    $7zipPath = "C:\Path\To\7Zip\7z.exe" # Update with the actual path to 7-Zip executable
    $arguments = "x `"$localZipPath`" -p$zipPasswordPlainText -o`"$localFilePath`" -y"
    Start-Process $7zipPath -ArgumentList $arguments -NoNewWindow -Wait

    Write-Host "File downloaded and extracted successfully. Latest version: v$latestVersion"
} else {
    Write-Host "Local known-hashes file is up-to-date. Current version: v$localVersion"
}