大容量ファイルをboxへ自動登録してライブラリ化（その１）

# ——————————————–
# PowerShell（OAuth 2.0 + MailKit対応）：Boxアップロード → リンク取得 → 安全にメール送信
# ——————————————–

# 認証情報
$clientId = “YOUR_clientId“
$clientSecret = “YOUR_clientSecret“
$redirectUri = “http://localhost”
$scope = “item_upload item_readwrite”
$tokenFile = “C:\share\box_token.json“
$logFile = “C:\share\box_upload_log.txt“

# フォルダ情報とログ設定
$sourceFolder = “C:\share\in“
$localBoxPathRoot = “C:\Users\bitgate\Box\root“

# メール設定
$mailFrom = “送信用メールアドレス“
$mailTo = “受信用メールアドレス“
$mailPassword = “送信用メールアドレスパスワード“

# 認証URL作成
$authUrl = “https://account.box.com/api/oauth2/authorize?response_type=code&client_id=$clientId&redirect_uri=$redirectUri”

function Get-BoxAccessToken {
if (Test-Path $tokenFile) {
$token = Get-Content $tokenFile | ConvertFrom-Json
return $token.access_token
}

Write-Host “以下のURLをブラウザで開いて、認可コードを取得してください：” -ForegroundColor Cyan
Write-Host $authUrl
$code = Read-Host “取得した認可コードを入力”

$tokenBody = @{
grant_type = “authorization_code”
code = $code
client_id = $clientId
client_secret = $clientSecret
redirect_uri = $redirectUri
}
$tokenResponse = Invoke-RestMethod -Method Post -Uri “https://api.box.com/oauth2/token” -Body $tokenBody
$tokenResponse | ConvertTo-Json | Set-Content $tokenFile
return $tokenResponse.access_token
}

# Box 認証
$accessToken = Get-BoxAccessToken

# フォルダ情報設定
$today = Get-Date -Format “yyyyMMdd”
$boxUploadUrl = “https://upload.box.com/api/2.0/files/content”
Add-Content -Path $logFile -Value “`n=== 実行開始: $(Get-Date) ===”

# SMTP情報（MailKit用）
$smtpServer = “smtp.office365.com”
$smtpPort = 587

# MailKitライブラリの読み込み
Add-Type -Path “C:\share\MimeKit.dll”
Add-Type -Path “C:\share\MailKit.dll”

# HTTP client 初期化
$handler = New-Object System.Net.Http.HttpClientHandler
$client = New-Object System.Net.Http.HttpClient($handler)
$client.DefaultRequestHeaders.Authorization = New-Object System.Net.Http.Headers.AuthenticationHeaderValue(“Bearer”, $accessToken)

# アップロード処理
Get-ChildItem -Path $sourceFolder -File | ForEach-Object {
try {
$filePath = $_.FullName
$fileName = $_.Name
$fileBytes = [System.IO.File]::ReadAllBytes($filePath)

$meta = @{ name = $fileName; parent = @{ id = “0” } } | ConvertTo-Json -Compress
$stringContent = New-Object System.Net.Http.StringContent($meta, [System.Text.Encoding]::UTF8, “application/json”)
$fileContent = [System.Net.Http.ByteArrayContent]::new($fileBytes)

$multipart = New-Object System.Net.Http.MultipartFormDataContent
$multipart.Add($stringContent, “attributes”)
$multipart.Add($fileContent, “file”, $fileName)

$response = $client.PostAsync($boxUploadUrl, $multipart).Result
$responseBody = $response.Content.ReadAsStringAsync().Result

if (-not $response.IsSuccessStatusCode) {
Add-Content -Path $logFile -Value “Upload failed: $fileName => Status $($response.StatusCode)”
Add-Content -Path $logFile -Value “Response: $responseBody”
return
}

$result = $responseBody | ConvertFrom-Json
if (-not $result.entries -or $result.entries.Count -eq 0) {
Add-Content -Path $logFile -Value “Upload response missing entries for: $fileName”
Add-Content -Path $logFile -Value “Raw response: $responseBody”
return
}

$fileId = $result.entries[0].id

# リンク作成
$linkUri = “https://api.box.com/2.0/files/$fileId”
$linkBody = @{ shared_link = @{ access = “open” } } | ConvertTo-Json -Depth 10
$linkResponse = Invoke-RestMethod -Method Put -Uri $linkUri -Headers @{ Authorization = “Bearer $accessToken”; “Content-Type” = “application/json” } -Body $linkBody
$linkUrl = $linkResponse.shared_link.url

# MailKitでメール送信
$msg = New-Object MimeKit.MimeMessage
$msg.From.Add(“$mailFrom”)
$msg.To.Add(“$mailTo”)
$msg.Subject = “boxupload”

$bodyText = “$fileName`n$linkUrl”
$builder = New-Object MimeKit.BodyBuilder
$builder.TextBody = $bodyText
$msg.Body = $builder.ToMessageBody()

$smtp = New-Object MailKit.Net.Smtp.SmtpClient
$smtp.Connect($smtpServer, $smtpPort, [MailKit.Security.SecureSocketOptions]::StartTls)
$smtp.Authenticate($mailFrom, $mailPassword)
$smtp.Send($msg)
$smtp.Disconnect($true)
$smtp.Dispose()

Add-Content -Path $logFile -Value “Success: $fileName => $linkUrl”
Move-Item -Path $filePath -Destination “$localBoxPathRoot\$today\$fileName” -Force

} catch {
Add-Content -Path $logFile -Value “Error uploading $($_.Name): $($_.Exception.Message)”
}
}