# pylint:disable=missing-function-docstring
import tempfile
import uuid
from copy import deepcopy
from pathlib import Path
from unittest.mock import Mock, patch

import jinja2
import pytest

from apocalypse.arghandler import get_apo_input
from apocalypse.create_bash_script import (create_script, get_slurm_params, get_template)


@pytest.fixture
def mock_apo_input(temp_dir):
    mock = Mock(spec=get_apo_input)
    mock.script_file = "test_script.py"
    mock.endstation = "test_endstation"
    mock.slurm_job = Path(temp_dir).joinpath("ap_job.sh")
    mock.send_done_pth = Path(__file__).parent.joinpath("..", "..", "apocalypse", "send_done.py")
    mock.header = {
        "action": "write_finished"
        }
    mock.request = {
        "writer_type": "test_writer",
        "output_file": "/path/to/output.txt",
        "metadata": {
            "general/instrument": "test_endstation"
            }
        }
    mock.log_file = "/pth/to/somewhere"
    mock.slurm_params = [
        "--cpus-per-task=5",
        "--mem=0",
        "--partition='prod'",
        "--exclusive",
        "--error='/pth/to/e'",
        "--output='/pth/to/o'",
        "--input='/pth/to/i'",
        "--job-name='job'"
        ]
    mock.slurm_params_other = [" --nice=100, --account='foo''"]
    mock.cpus_per_task = 5
    mock.mem = "0"
    mock.partition = "prod"
    mock.exclusive = True
    mock.error_pth = "/pth/to/e"
    mock.input_pth = "/pth/to/i"
    mock.output_pth = "/pth/to/o"
    mock.job_name = "job"
    mock.template_file = (
        Path(__file__).parent.joinpath("..", "..", "apocalypse", "job_template.jinja")
        )
    mock.broker_url = "test-broker"
    mock.slurm_job_date = "_%Y_%m_%d"
    mock.writer_type = "test_writer"
    return mock


@pytest.fixture
def template():
    template_file = Path(__file__).parent.joinpath("..", "..", "apocalypse", "job_template.jinja")
    return get_template(template_file)


def test_get_template_type(template):
    assert isinstance(template, jinja2.environment.Template)


def test_get_template_name(template):
    assert template.name == "job_template.jinja"


def test_get_template_missing_template():
    template_file = Path(__file__).parent.joinpath(f"does_not_exist_{uuid.uuid4()}")
    with pytest.raises(IOError):
        get_template(template_file)


@pytest.fixture
def temp_dir():
    with tempfile.TemporaryDirectory() as directory:
        yield directory


def test_file_created(mock_apo_input):
    create_script(mock_apo_input)
    assert mock_apo_input.slurm_job.is_file()


# add others not just time
@pytest.mark.parametrize("mem", ["12G", "0", "8000", "300M"])
def test_slurm_params(mock_apo_input, mem):
    mock_apo_input.mem = mem
    create_script(mock_apo_input)

    with open(mock_apo_input.slurm_job, "r") as f:
        file_content = f.read()
        assert f"#SBATCH --mem={mem}" in file_content


@pytest.mark.parametrize("script", ["./test", "./dummy.sh", "./tests/ugly_file.m"])
def test_filename(mock_apo_input, script):
    mock_apo_input.script_file = script
    create_script(mock_apo_input)

    with open(mock_apo_input.slurm_job, "r") as f:
        file_content = f.read()
        assert f"script_file={script}" in file_content


@pytest.mark.parametrize("broker", ["sf-daq-8", "sf-daq-11", "smth"])
def test_broker_url(mock_apo_input, broker):
    mock_apo_input.broker_url = broker
    create_script(mock_apo_input)

    with open(mock_apo_input.slurm_job, "r") as f:
        file_content = f.read()
        assert f"-b {broker}" in file_content


def test_create_script_missing_template(mock_apo_input):
    params = deepcopy(mock_apo_input)
    params.template_file = Path(__file__).parent.joinpath(f"does_not_exist_{uuid.uuid4()}")
    with pytest.raises(IOError):
        create_script(params)


def test_create_script_issue_with_main_folder(mock_apo_input):
    params = deepcopy(mock_apo_input)
    params.slurm_job = (
        Path(__file__).parent.joinpath(f"/{uuid.uuid4()}/does_not_exist_{uuid.uuid4()}")
        )
    with pytest.raises(IOError):
        create_script(params)


def test_create_script_issue_with_writing(mock_apo_input):
    with pytest.raises(IOError), patch("builtins.open", side_effect=OSError("Permission denied")):
        create_script(mock_apo_input)


def test_get_slurm_params(mock_apo_input):
    result = get_slurm_params(mock_apo_input)
    assert mock_apo_input.slurm_params.sort() == result.sort()
    params = deepcopy(mock_apo_input)
    attrs_to_mod = [
        "input_pth",
        "output_pth",
        "error_pth",
        "exclusive",
        "partition",
        "mem",
        "cpus_per_task",
        "job_name"
        ]

    for attr in vars(params):
        if attr in attrs_to_mod:
            setattr(params, attr, None)
    assert not get_slurm_params(params)


# test multiple path names? needed if already testing random folders?