package main

import (
	"fmt"
	"log"
	"os"

	"github.com/unidoc/unipdf/v4/extractor"
	"github.com/unidoc/unipdf/v4/model"
)

func main() {
	f, err := os.Open("../../test.pdf")
	if err != nil {
		log.Fatalf("Failed to open PDF: %v\n", err)
	}
	defer f.Close()
	pdfReader, err := model.NewPdfReader(f)
	if err != nil {
		log.Fatalf("Failed to read PDF: %v\n", err)
	}
	numPages, err := pdfReader.GetNumPages()
	if err != nil {
		log.Fatalf("Failed to retrieve the number of pages: %v\n", err)
	}
	fmt.Printf("Total number of pages: %d\n", numPages)

	fmt.Printf("--------------------\n")
	fmt.Printf("PDF to text extraction:\n")
	fmt.Printf("--------------------\n")
	for i := 0; i < numPages; i++ {
		pageNum := i + 1

		page, err := pdfReader.GetPage(pageNum)
		if err != nil {
			panic(err)
		}

		ex, err := extractor.New(page)
		if err != nil {
			panic(err)
		}

		text, err := ex.ExtractText()
		if err != nil {
			panic(err)
		}

		fmt.Println("------------------------------")
		fmt.Printf("Page %d:\n", pageNum)
		fmt.Printf("\"%s\"\n", text)
		fmt.Println("------------------------------")
	}

}