package main

import (
  "log"
  "os"

  "github.com/digitaldata-cz/htmltopdf"
)

func main() {
  htmltopdf.Init()
  defer htmltopdf.Destroy()

  // Create object from file.
  object1, err := htmltopdf.NewObject("sample1.html")
  if err != nil {
    log.Fatal(err)
  }
  object1.Header.ContentCenter = "[title]"
  object1.Header.DisplaySeparator = true

  // Create object from URL.
  object2, err := htmltopdf.NewObject("https://google.com")
  if err != nil {
    log.Fatal(err)
  }
  object2.Footer.ContentLeft = "[date]"
  object2.Footer.ContentCenter = "Sample footer information"
  object2.Footer.ContentRight = "[page]"
  object2.Footer.DisplaySeparator = true

  // Create object from reader.
  inFile, err := os.Open("sample2.html")
  if err != nil {
    log.Fatal(err)
  }
  defer inFile.Close()

  object3, err := htmltopdf.NewObjectFromReader(inFile)
  if err != nil {
    log.Fatal(err)
  }
  object3.Zoom = 1.5
  object3.TOC.Title = "Table of Contents"

  // Create converter.
  converter, err := htmltopdf.NewConverter()
  if err != nil {
    log.Fatal(err)
  }
  defer converter.Destroy()

  // Add created objects to the converter.
  converter.Add(object1)
  converter.Add(object2)
  converter.Add(object3)

  // Set converter options.
  converter.Title = "Sample document"
  converter.PaperSize = htmltopdf.A4
  converter.Orientation = htmltopdf.Landscape
  converter.MarginTop = "1cm"
  converter.MarginBottom = "1cm"
  converter.MarginLeft = "10mm"
  converter.MarginRight = "10mm"

  // Convert objects and save the output PDF document.
  outFile, err := os.Create("out.pdf")
  if err != nil {
    log.Fatal(err)
  }
  defer outFile.Close()

  if err := converter.Run(outFile); err != nil {
    log.Fatal(err)
  }
}