Get-HelloProjectDigitalBooks.ps1

# Get-HelloProjectDigitalBooks.ps1

[System.IO.Directory]::SetCurrentDirectory([System.Environment]::GetFolderPath('Desktop'))

$ie = New-Object -ComObject InternetExplorer.Application
$ie.Visible = $true
$ie.Navigate("http://www.helloproject-digitalbooks.com/")
while ($ie.Busy) {
    Start-Sleep -Milliseconds 100
}
$volume = if ($ie.Document.documentElement.outerHTML -match '"sample/(\d+)/') { $Matches[1] }

[void](Read-Host "Hello! Project digitalbooksのホームページが表示されたらログインし、その後にEnterキーを押してください。")
$cookie = $ie.Document.cookie

Write-Host "Volume: $volume"
Write-Host "Cookie: $cookie"

$webClient = New-Object System.Net.WebClient
$webClient.Headers.Add("Cookie", $cookie)

$url_format = "https://www.helloproject-digitalbooks.com/image.php?c=slide&v={0:d1}&id={1:d3}"
$file_format = "$volume-{0:d1}-{1:d3}.jpg"

foreach ($v in 1..4) {
    foreach ($id in 1..30) {
        $file = "No image"
        $data = $webClient.DownloadData(($url = $url_format -f $v, $id))
        if ($data.Length -gt 0) {
            [System.IO.File]::WriteAllBytes(($file = $file_format -f $v, $id), $data)
        }
        Write-Host "$url : $file"
    }
}

Write-Host "ダウンロードが終了しました。ブラウザを閉じてください。"