// Copyright 2017 FoxyUtils ehf. All rights reserved.

package main

import (
	"fmt"
	"log"
	"os"
	"time"

	"github.com/unidoc/unioffice/v2/common/license"
	"github.com/unidoc/unioffice/v2/document"
)

func init() {
	// Make sure to load your metered License API key prior to using the library.
	// If you need a key, you can sign up and create a free one at https://cloud.unidoc.io
	err := license.SetMeteredKey(os.Getenv(`UNIDOC_LICENSE_API_KEY`))
	if err != nil {
		panic(err)
	}
}

func main() {
	doc, err := document.Open("document.docx")
	if err != nil {
		log.Fatalf("error opening document: %s", err)
	}
	defer doc.Close()

	cp := doc.CoreProperties
	// You can read properties from the document
	fmt.Println("Title:", cp.Title())
	fmt.Println("Author:", cp.Author())
	fmt.Println("Description:", cp.Description())
	fmt.Println("Last Modified By:", cp.LastModifiedBy())
	fmt.Println("Category:", cp.Category())
	fmt.Println("Content Status:", cp.ContentStatus())
	fmt.Println("Created:", cp.Created())
	fmt.Println("Modified:", cp.Modified())

	// And change them as well
	cp.SetTitle("CP Invoices")
	cp.SetAuthor("John Doe")
	cp.SetCategory("Invoices")
	cp.SetContentStatus("Draft")
	cp.SetLastModifiedBy("Jane Smith")
	cp.SetCreated(time.Now())
	cp.SetModified(time.Now())
	doc.SaveToFile("document_modified.docx")
}