import os

import shutil
from pathlib import Path
from bopytex.worker.join_pdf import pdfjam
import pytest


@pytest.fixture
def multiple_pdf(tmp_path, request):
    this_file = Path(request.module.__file__)

    source = this_file.parent / "source.pdf"
    assert source.exists()
    qty = 3
    dests = []
    for i in range(qty):
        dest = tmp_path / f"source_{i}.pdf"
        shutil.copyfile(source, dest)
        assert dest.exists()
        dests.append(dest)

    return dests


def test_join_pdf(multiple_pdf):
    tmp_path = multiple_pdf[0].parent
    os.chdir(tmp_path)

    deps = [str(d.name) for d in multiple_pdf]

    output = "joined.pdf"

    message = pdfjam({"pwd": Path.cwd()}, deps, output)

    assert message.status == 0
    assert Path(output).exists()


def test_join_pdf_failed(multiple_pdf, tmp_path):
    os.chdir(tmp_path)

    deps = [str(d.name) for d in multiple_pdf] + ["doesnotexists.pdf"]

    output = "joined.pdf"

    message = pdfjam({"pwd": Path.cwd()}, deps, output)

    assert message.status == 66
    assert not Path(output).exists()