from ironpdf import *

# Instantiate Renderer
renderer = ChromePdfRenderer()

multi_page_html = """
    <p> This is 1st Page</p>
        <div style = 'page-break-after: always;' ></div>
        <p> This is 2nd Page</p>
    <div style = 'page-break-after: always;' ></div>
        <p> This is 3rd Page</p>
    <div style = 'page-break-after: always;' ></div>
        <p> This is 4th Page</p>
    <div style = 'page-break-after: always;' ></div>
        <p> This is 5th Page</p>
    <div style = 'page-break-after: always;' ></div>
        <p> This is 6th Page</p>
    <div style = 'page-break-after: always;' ></div>
        <p> This is 7th Page</p>
"""

# Create a PDF or Load an existing PDF using PdfDocument.FromFile()
pdf = renderer.RenderHtmlAsPdf(multi_page_html)

# Create a Header
header = HtmlHeaderFooter()
header.HtmlFragment = "<div>THIS IS HEADER {page} of {total-pages}</div>"

# Create a Page Range  0 .. 7
all_page_indexes = range(pdf.PageCount)

# Example 1
# Apply header to even page index only. (page number will be odd number because index start at 0 but page number start at 1)
even_page_indexes = [i for i in all_page_indexes if i % 2 == 0]
pdf.AddHtmlHeaders(header, 1, ToPageList(even_page_indexes))
pdf.SaveAs("even_page_indexes.pdf")

# Example 2
# Apply header to odd page index only. (page number will be even number because index start at 0 but page number start at 1)
new_pdf = renderer.RenderHtmlAsPdf(multi_page_html)
odd_page_indexes = [i for i in all_page_indexes if i % 2 != 0]
new_pdf.AddHtmlHeaders(header, 1, ToPageList(odd_page_indexes))
new_pdf.SaveAs("odd_page_indexes.pdf")

# Example 3
# Apply header to last page only.
new_pdf = renderer.RenderHtmlAsPdf(multi_page_html)
new_pdf.AddHtmlHeaders(header, 1, ToPageList([new_pdf.PageCount - 1]))
new_pdf.SaveAs("last_page_only.pdf")

# Example 4
# Apply header to first page only.
new_pdf = renderer.RenderHtmlAsPdf(multi_page_html)
new_pdf.AddHtmlHeaders(header, 1, ToPage(0))
new_pdf.SaveAs("first_page_only.pdf")

# Example 5
# Skip the first page.
new_pdf = renderer.RenderHtmlAsPdf(multi_page_html)
new_pdf.AddHtmlHeaders(header, 1, ToPageRange(1, new_pdf.PageCount))
new_pdf.SaveAs("skip_first_page.pdf")

# Example 6
# Skip first page and make second pages label as 1.
new_pdf = renderer.RenderHtmlAsPdf(multi_page_html)
new_pdf.AddHtmlHeaders(header, 0, ToPageRange(1, new_pdf.PageCount))
new_pdf.SaveAs("skip_and_dont_count_the_first_page.pdf")