# The authentication key (API Key).
# Get your own by registering at https://app.pdf.co
$API_KEY = "**********************************"

# Source PDF file
$SourceFile = ".\sample.pdf"
# Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
$Pages = ""
# PDF document password. Leave empty for unprotected documents.
$Password = ""
# Destination CSV file name
$DestinationFile = ".\result.csv"
# (!) Make asynchronous job
$Async = $true


# 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE.
# * If you already have a direct file URL, skip to the step 3.

# Prepare URL for `Get Presigned URL` API call
$query = "https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=" + `
    [System.IO.Path]::GetFileName($SourceFile)
$query = [System.Uri]::EscapeUriString($query)

try {
    # Execute request
    $jsonResponse = Invoke-RestMethod -Method Get -Headers @{ "x-api-key" = $API_KEY } -Uri $query
    
    if ($jsonResponse.error -eq $false) {
        # Get URL to use for the file upload
        $uploadUrl = $jsonResponse.presignedUrl
        # Get URL of uploaded file to use with later API calls
        $uploadedFileUrl = $jsonResponse.url

        # 2. UPLOAD THE FILE TO CLOUD.

        $r = Invoke-WebRequest -Method Put -Headers @{ "x-api-key" = $API_KEY; "content-type" = "application/octet-stream" } -InFile $SourceFile -Uri $uploadUrl
        
        if ($r.StatusCode -eq 200) {
            
            # 3. CONVERT UPLOADED PDF FILE TO CSV

            # Prepare URL for `PDF To CSV` API call
            $query = "https://api.pdf.co/v1/pdf/convert/to/csv"

            # Prepare request body (will be auto-converted to JSON by Invoke-RestMethod)
            # See documentation: https://apidocs.pdf.co
            $body = @{
                "name"     = $(Split-Path $DestinationFile -Leaf)
                "password" = $Password
                "pages"    = $Pages
                "url"      = $uploadedFileUrl
                "async"    = $Async
            } | ConvertTo-Json
            
            # Execute request
            $response = Invoke-WebRequest -Method Post -Headers @{ "x-api-key" = $API_KEY; "Content-Type" = "application/json" } -Body $body -Uri $query
            
            $jsonResponse = $response.Content | ConvertFrom-Json
            
            if ($jsonResponse.error -eq $false) {
                # Asynchronous job ID
                $jobId = $jsonResponse.jobId
                # URL of generated CSV file that will available after the job completion
                $resultFileUrl = $jsonResponse.url

                # Check the job status in a loop. 
                do {
                    $statusCheckUrl = "https://api.pdf.co/v1/job/check?jobid=" + $jobId
                    $jsonStatus = Invoke-RestMethod -Method Get -Headers @{ "x-api-key" = $API_KEY } -Uri $statusCheckUrl

                    # Display timestamp and status (for demo purposes)
                    Write-Host "$(Get-date): $($jsonStatus.status)"

                    if ($jsonStatus.status -eq "success") {
                        # Download CSV file
                        Invoke-WebRequest -Headers @{ "x-api-key" = $API_KEY } -OutFile $DestinationFile -Uri $resultFileUrl
                        Write-Host "Generated CSV file saved as `"$($DestinationFile)`" file."
                        break
                    }
                    elseif ($jsonStatus.status -eq "working") {
                        # Pause for a few seconds
                        Start-Sleep -Seconds 3
                    }
                    else {
                        Write-Host $jsonStatus.status
                        break
                    }
                }
                while ($true)
            }
            else {
                # Display service reported error
                Write-Host $jsonResponse.message
            }
        }
        else {
            # Display request error status
            Write-Host $r.StatusCode + " " + $r.StatusDescription
        }
    }
    else {
        # Display service reported error
        Write-Host $jsonResponse.message
    }
}
catch {
    # Display request error
    Write-Host $_.Exception
}

@echo off

powershell -NoProfile -ExecutionPolicy Bypass -Command "& .\ConvertPdfToCsvFromUploadedFileAsync.ps1"
echo Script finished with errorlevel=%errorlevel%

pause