# © 2019 James R. Barlow: github.com/jbarlow83
#
# This file is part of OCRmyPDF.
#
# OCRmyPDF is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# OCRmyPDF is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OCRmyPDF.  If not, see <http://www.gnu.org/licenses/>.

import pytest

from ocrmypdf import ocrmypdf as run
from ocrmypdf._validation import _pages_from_ranges
from ocrmypdf.pdfinfo import PdfInfo


def test_str_ranges():
    assert _pages_from_ranges('43') == {42}
    assert _pages_from_ranges('1, 2, 3') == {0, 1, 2}
    assert _pages_from_ranges('1-3') == {0, 1, 2}
    assert _pages_from_ranges('1-3,5,7,42') == {0, 1, 2, 4, 6, 41}
    assert _pages_from_ranges('3, 3, 3, 3,') == {2}


def test_nonmonotonic_warning(caplog):
    pages = _pages_from_ranges('1, 3, 2')
    assert pages == {0, 1, 2}
    assert 'out of order' in caplog.text


def test_list_range():
    assert _pages_from_ranges([0, 1, 2]) == {0, 1, 2}


def test_limited_pages(resources, outpdf, spoof_tesseract_cache):
    multi = resources / 'multipage.pdf'
    run(
        multi,
        outpdf,
        pages='5-6',
        optimize=0,
        output_type='pdf',
        tesseract_env=spoof_tesseract_cache,
    )
    pi = PdfInfo(outpdf)
    assert not pi.pages[0].has_text
    assert pi.pages[4].has_text
    assert pi.pages[5].has_text