feat: use new pdf lib

lib/extract.go

@@ -3,13 +3,12 @@ package lib
 import (
 	"errors"
 	"fmt"
-	"io"
 	"os"
 	"path/filepath"
 	"strings"
 
-	"github.com/pdfcpu/pdfcpu/pkg/api"
-	"github.com/pdfcpu/pdfcpu/pkg/pdfcpu/model"
+	attachment2 "gitlab.com/romalor/pdflib/pkg/components/attachment"
+	"gitlab.com/romalor/pdflib/pkg/pdf"
 )
 
 func ExtractFromPdf(inputFilePath string, outputFilePath string) error {
@@ -35,43 +34,24 @@ func ExtractFromPdf(inputFilePath string, outputFilePath string) error {
 	}
 	defer inputFile.Close()
 
-	var (
-		attachments []model.Attachment
-		rawData     []byte
-		ctx         *model.Context
-		attachment  *model.Attachment
-	)
+	var attachments []attachment2.Attachment
 
-	ctx, err = api.ReadContextFile(inputFilePath)
-	if err != nil {
-		return err
-	}
-	attachments, err = api.Attachments(inputFile, model.NewDefaultConfiguration())
+	var doc *pdf.Document
+	doc, err = pdf.OpenReader(inputFile)
 	if err != nil {
 		return err
 	}
 
-	attachment, err = ctx.ExtractAttachment(attachments[0])
+	attachments, err = doc.Attachments()
 	if err != nil {
 		return err
 	}
 
-	rawData, err = io.ReadAll(attachment)
-	if err != nil {
-		return err
+	if len(attachments) == 0 {
+		return errors.New("no attachments found")
 	}
 
-	var outputFile *os.File
-	outputFile, err = os.Create(outputFilePath)
-	if err != nil {
-		return err
-	}
-	defer outputFile.Close()
+	err = doc.ExtractAttachment(attachments[0].Name, outputFilePath)
 
-	_, err = outputFile.Write(rawData)
-	if err != nil {
-		return err
-	}
-
-	return nil
+	return err
 }