# URL: https://blog.travisflix.com/download-sam-harris-making-sense-full-subscriber-podcast-episodes-for-free/
# Tested with PowerShell 5.1 on Windows and PowerShell 7.5.4 on Linux

# Fetch RSS feed and extract MP3 URLs and output to file
(Invoke-WebRequest -Uri 'https://rss.samharris.org/feed/5b624f14-e923-4a75-aeb9-77d11773fb91').Content -split "`n" |
    Where-Object { $_ -like '*mp3*' } |
    ForEach-Object {
        $_ -replace '      <enclosure length="0" type="audio/mpeg" url="' -replace '"/>'
    } | Out-File -FilePath '.\feed5b624f14.txt' -Encoding utf8

# Download files (skip if already exist)
$urls = Get-Content -Path '.\feed5b624f14.txt'
foreach ($url in $urls) {
    $filename = [System.IO.Path]::GetFileName($url.Split('?')[0])
    $destinationPath = Join-Path -Path $pwd.Path -ChildPath $fileName
    if (-not (Test-Path $destinationPath)) {
        Invoke-WebRequest -Uri $url -OutFile $filename
    }
}