from fpdf import FPDF
"""
A script for generating A5 size pdf zines
with a text-file input, under development,
GPL3 Licence, Mara Karagianni March 2021
"""

# Variables
header_font = 'helvetica'
header_font_size = 14
text_font = 'helvetica'
text_font_size = 10

top_margin = 15
left_margin = 20
right_margin = 20
max_left_margin = 160

max_height = 166
current_x = 20
current_y = 30
max_y = 166
max_x = 160
cell_width = 120
cell_header_height = 16
cell_height = 8

pdf = FPDF(orientation="L", unit="mm", format="A4")
pdf.set_font(header_font, 'B', header_font_size)
pdf.set_margins(top=top_margin, left=left_margin, right=right_margin)

pdf.add_page()
print("TOP margin is {}".format(pdf.get_y()))

# Header
title = 'Painful Mailman Migrations'
pdf.cell(cell_width, cell_header_height, title, 0, ln=1, align='C')
pdf.dashed_line(
    current_x, current_y, current_x+cell_width, current_y,
    dash_length=3, space_length=3)

# set font for all text
pdf.set_font(text_font, size=text_font_size)

# file to get the text
filename = "./notes_sample"
text = open(filename).readlines()

# start x and y position
pdf.set_xy(current_x, current_y+9)

index = 0
for line in text:
    # check current page height
    if pdf.get_y() >= max_height and pdf.get_x() == max_left_margin:
        # create new page/signature
        pdf.add_page()
        pdf.set_xy(current_x, current_y)
        pdf.set_margins(top=top_margin, left=left_margin, right=right_margin)
        print('NEW SIGNATURE')

    if pdf.get_y() >= max_height:
        print('*****')
        print("BOTTOM OF PAGE, height is {}".format(pdf.get_y()))
        print('*****')

        pdf.set_xy(max_left_margin, current_y)
        pdf.set_margins(
            top=top_margin, left=max_left_margin, right=right_margin)

    if line == "\n":
        # debug if empty lines are detected
        print('EMPTY LINE {}'.format(line))

    print("x {}, y {}".format(pdf.get_x(), pdf.get_y()))
    print('============')

    pdf.multi_cell(cell_width, cell_height, text[index], 0, align='L')
    index += 1

# save pdf file
pdf.output('trial.pdf')