Watson API from PowerShell

textSentimentW.ps1

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$account = @{
  "username" = "****"
  "password" = "****"
}
$texts = @("ColorfulのSSDめっちゃヤバいwww Galaxy S6や廃棄品のSSDから剥がしたフラッシュやIntelの偽物が搭載されているのが確認されてるらしいwww 安価なNVMe CN600もリマークチップを使ってるとのこと、、、 最近めっちゃ秋葉原で売ってるけど買わない方が良さそうだな、、、")
$endPoint = "https://gateway.watsonplatform.net/natural-language-understanding/api/v1/analyze?version=2018-03-16"
$pass = ConvertTo-SecureString $account.password -AsPlainText -Force
$user = $account.username

$cred = New-Object System.Management.Automation.PSCredential $user, $pass

$texts | ForEach-Object {
    $text = $_
    $obj = @{
        text = $text
        features = @{
            sentiment = @{
            }
            categories = @{
            }
        }
    }
    $json = ConvertTo-Json $obj
    $result = Invoke-RestMethod $endPoint -Credential $cred -Body $json -Method Post -ContentType "application/json; charset=utf-8"
    $sentiment = $result.sentiment.document.score
    $category = $result.categories[0]
}