Invoke-TeamsMeetingTranscriptDownload.ps1

#requires -modules "Microsoft.Graph.Authentication"

function Get-TeamsMeetingId
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        [Guid]
        $UserObjectId,

        [Parameter(Mandatory=$true)]
        [int64]
        $JoinMeetingId
    )

    begin
    {
        $uri = '/v1.0/users/{0}/onlineMeetings?$filter=joinMeetingIdSettings/joinMeetingId eq ''{1}''' -f $UserObjectId, $JoinMeetingId
    }
    process
    {
        $response = Invoke-MgRestMethod -Method GET -Uri $uri -Verbose
        
        return $response.value.Id
    }
    end
    {
    }
}


function Invoke-TeamsMeetingTranscriptDownload
{
    [CmdletBinding()]
    param
    (
        [Parameter(Mandatory=$true)]
        [Guid]
        $UserObjectId,

        [Parameter(Mandatory=$true)]
        [string]
        $MeetingId,

        [Parameter(Mandatory=$true)]
        [string]
        $OutputFilePath
    )

    begin
    {
        $uri = '/v1.0/users/{0}/onlineMeetings/{1}/transcripts' -f $UserObjectId.ToString(), $MeetingId
    }
    process
    {
        $response = Invoke-MgRestMethod -Method GET -Uri $uri -Verbose
        
        Invoke-MgRestMethod -Method Get -Uri $response.value.transcriptContentUrl -OutputFilePath $OutputFilePath
    }
    end
    {
    }
}


Connect-MgGraph -ClientId              "bf322415-5c0e-4698-a838-2b9610cf62f5" `
                -CertificateThumbprint $env:CDX_THUMBPRINT `
                -TenantId              $env:CDX_TENANTID


$meetingId = Get-TeamsMeetingId -UserObjectId "a8734c7e-a19b-41c6-b384-5e550ca02b9f" -JoinMeetingId "23204592477"


Invoke-TeamsMeetingTranscriptDownload -UserObjectId "a8734c7e-a19b-41c6-b384-5e550ca02b9f" -MeetingId $meetingId -OutputFilePath "C:\_temp\transcript-01.vtt"