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Copy files to another SharePoint Library in another site

Author: Garry Trinder, Adam, Inspired by Veronique Lengelle

This script shows how you can use the CLI to:

  • when copyKeepingSameFolderStructure is true - copy all files and folders from source library to a different library in different SharePoint site keeping the same folder and subfolder structure
  • when copyKeepingSameFolderStructure is false - copy all files from all folders and subfolders from source library to a different library to a root folder in different SharePoint
Write-host 'Copy files to another SharePoint Library in another site'

function Copy-FilesFromFolderToLibrary(
  [Parameter(Mandatory = $True)][string] $tenatUrl,
  [Parameter(Mandatory = $True)][string] $sourceSite,
  [Parameter(Mandatory = $True)][string] $folder,
  [Parameter(Mandatory = $True)][string] $targetLibrary,
  [Parameter(Mandatory = $True)][string] $targetSite) {
    Write-Host $folder

    $allFolders = m365 spo folder list --webUrl "$tenatUrl$sourceSite" --parentFolderUrl $folder --output 'json'
    $allFolders = $allFolders | ConvertFrom-Json
    foreach ($innerfolder in $allFolders) {
      if ($innerfolder.Name -ne 'Forms') {
        $folderUrl = $innerfolder.ServerRelativeUrl -replace $sourceSite, ''
        Copy-FilesFromFolderToLibrary -tenatUrl $tenatUrl -sourceSite $sourceSite -folder $folderUrl -targetLibrary $targetLibrary -targetSite $targetSite
      }
    }

    $allFiles = m365 spo file list --webUrl "$tenatUrl$sourceSite" --folderUrl $folder.substring(1) --output 'json'
    $allFiles = $allFiles | ConvertFrom-Json
    foreach ($file in $allFiles) {
      $fileUrl = $file.ServerRelativeUrl -replace $sourceSite, ''
      m365 spo file copy --webUrl "$tenatUrl$sourceSite" --sourceUrl $fileUrl --targetUrl "$targetSite/$targetLibrary"
    }
}

function Copy-LibraryToLibrary(
  [Parameter(Mandatory = $True)][string] $tenatUrl,
  [Parameter(Mandatory = $True)][string] $sourceLibrary,
  [Parameter(Mandatory = $True)][string] $sourceSite,
  [Parameter(Mandatory = $True)][string] $targetLibrary,
  [Parameter(Mandatory = $True)][string] $targetSite,
  [Parameter(Mandatory = $True)][bool] $copyKeepingSameFolderStructure) {
  if ($copyKeepingSameFolderStructure) {
    Write-host "Copy the same structure"

    $allFolders = m365 spo folder list --webUrl "$tenatUrl$sourceSite" --parentFolderUrl "/$sourceLibrary" --output 'json'
    $allFolders = $allFolders | ConvertFrom-Json
    foreach ($folder in $allFolders) {
      if ($folder.Name -ne 'Forms') {
        $folderName = $folder.Name
        m365 spo folder copy --webUrl "$tenatUrl$sourceSite" --sourceUrl "/$sourceLibrary/$folderName" --targetUrl "$targetSite/$targetLibrary"
      }
    }

    $allFiles = m365 spo file list --webUrl "$tenatUrl$sourceSite" --folderUrl $sourceLibrary --output 'json'
    $allFiles = $allFiles | ConvertFrom-Json
    foreach ($file in $allFiles) {
      $fileUrl = $file.ServerRelativeUrl -replace $sourceSite, ''
      m365 spo file copy --webUrl "$tenatUrl$sourceSite" --sourceUrl $fileUrl --targetUrl "$targetSite/$targetLibrary"
    }
  }
  else {
    Write-host "Copy files to the root target folder"

    Copy-FilesFromFolderToLibrary -tenatUrl $tenatUrl -sourceSite $sourceSite -folder "/$sourceLibrary" -targetLibrary $targetLibrary -targetSite $targetSite
  }
}

Write-host 'ensure logged in'
$m365Status = m365 status --output text
if ($m365Status -eq "Logged Out") {
  m365 login
}

$tenatUrl = 'https://contoso.sharepoint.com'
$sourceLibrary = 'Shared Documents'
$sourceSite = '/sites/FromSite'
$targetLibrary = 'Shared Documents'
$targetSite = '/sites/ToSite'
$copyKeepingSameFolderStructure = $false
Copy-LibraryToLibrary -tenatUrl $tenatUrl -sourceLibrary $sourceLibrary -sourceSite $sourceSite -targetLibrary $targetLibrary -targetSite $targetSite -copyKeepingSameFolderStructure $copyKeepingSameFolderStructure
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