# Copyright © 2012-2023 jrnl contributors
# License: https://www.gnu.org/licenses/gpl-3.0.html

import json
import os
import random
import shutil
import string
from datetime import datetime
from unittest.mock import MagicMock
from unittest.mock import patch
from xml.etree import ElementTree as ET

from pytest_bdd import given
from pytest_bdd.parsers import parse

from jrnl import __version__
from jrnl.time import __get_pdt_calendar
from tests.lib.fixtures import FailedKeyring
from tests.lib.fixtures import NoKeyring
from tests.lib.fixtures import TestKeyring


@given(parse("we {editor_method} to the editor if opened\n{editor_input}"))
@given(parse("we {editor_method} nothing to the editor if opened"))
def we_enter_editor(editor_method, editor_input, editor_state):
    file_method = editor_state["intent"]["method"]
    if editor_method == "write":
        file_method = "w+"
    elif editor_method == "append":
        file_method = "a+"
    else:
        assert False, f"Method '{editor_method}' not supported"

    editor_state["intent"] = {"method": file_method, "input": editor_input}


@given(parse('now is "{date_str}"'))
def now_is_str(date_str, mock_factories):
    class DatetimeMagicMock(MagicMock):
        # needed because jrnl does some reflection on datetime
        def __instancecheck__(self, subclass):
            return isinstance(subclass, datetime)

    def mocked_now(tz=None):
        now = datetime.strptime(date_str, "%Y-%m-%d %I:%M:%S %p")

        if tz:
            time_zone = datetime.utcnow().astimezone().tzinfo
            now = now.replace(tzinfo=time_zone)

        return now

    # jrnl uses two different classes to parse dates, so both must be mocked
    datetime_mock = DatetimeMagicMock(wraps=datetime)
    datetime_mock.now.side_effect = mocked_now

    pdt = __get_pdt_calendar()
    calendar_mock = MagicMock(wraps=pdt)
    calendar_mock.parse.side_effect = lambda date_str_input: pdt.parse(
        date_str_input, mocked_now()
    )

    mock_factories["datetime"] = lambda: patch("datetime.datetime", new=datetime_mock)
    mock_factories["calendar_parse"] = lambda: patch(
        "jrnl.time.__get_pdt_calendar", return_value=calendar_mock
    )


@given("we don't have a keyring", target_fixture="keyring")
def we_dont_have_keyring(keyring_type):
    return NoKeyring()


@given("we have a keyring", target_fixture="keyring")
@given(parse("we have a {keyring_type} keyring"), target_fixture="keyring")
def we_have_type_of_keyring(keyring_type):
    match keyring_type:
        case "failed":
            return FailedKeyring()

        case _:
            return TestKeyring()


@given(parse("we use no config"), target_fixture="config_path")
def we_use_no_config(temp_dir):
    os.chdir(temp_dir.name)  # @todo move this step to a more universal place
    return os.path.join(temp_dir.name, "non_existing_config.yaml")


@given(parse('we use the config "{config_file}"'), target_fixture="config_path")
def we_use_the_config(request, temp_dir, working_dir, config_file):
    # Move into temp dir as cwd
    os.chdir(temp_dir.name)  # @todo move this step to a more universal place

    # Copy the config file over
    config_source = os.path.join(working_dir, "data", "configs", config_file)
    config_dest = os.path.join(temp_dir.name, config_file)
    shutil.copy2(config_source, config_dest)

    # @todo make this only copy some journals over
    # Copy all of the journals over
    journal_source = os.path.join(working_dir, "data", "journals")
    journal_dest = os.path.join(temp_dir.name, "features", "journals")
    shutil.copytree(journal_source, journal_dest)

    # @todo maybe only copy needed templates over?
    # Copy all of the templates over
    template_source = os.path.join(working_dir, "data", "templates")
    template_dest = os.path.join(temp_dir.name, "features", "templates")
    shutil.copytree(template_source, template_dest)

    # @todo get rid of this by using default config values
    # merge in version number
    if (
        config_file.endswith("yaml")
        and os.path.exists(config_dest)
        and os.path.getsize(config_dest) > 0
    ):
        # Add jrnl version to file for 2.x journals
        with open(config_dest, "a") as cf:
            cf.write("version: {}".format(__version__))

    return config_dest


@given(
    parse('we copy the template "{template_file}" to the default templates folder'),
    target_fixture="default_templates_path",
)
def we_copy_the_template(request, temp_dir, working_dir, template_file):
    # Move into temp dir as cwd
    os.chdir(temp_dir.name)  # @todo move this step to a more universal place

    # Copy template over
    template_source = os.path.join(working_dir, "data", "templates", template_file)
    template_dest = os.path.join(temp_dir.name, "templates", template_file)
    os.makedirs(os.path.dirname(template_dest), exist_ok=True)
    shutil.copy2(template_source, template_dest)
    return template_dest


@given(parse('the config "{config_file}" exists'), target_fixture="config_path")
def config_exists(config_file, temp_dir, working_dir):
    config_source = os.path.join(working_dir, "data", "configs", config_file)
    config_dest = os.path.join(temp_dir.name, config_file)
    shutil.copy2(config_source, config_dest)


@given(parse('we use the password "{password}" if prompted'), target_fixture="password")
def use_password_forever(password):
    return password


@given("we create a cache directory", target_fixture="cache_dir")
def create_cache_dir(temp_dir):
    random_str = "".join(random.choices(string.ascii_uppercase + string.digits, k=20))

    dir_path = os.path.join(temp_dir.name, "cache_" + random_str)
    os.mkdir(dir_path)
    return {"exists": True, "path": dir_path}


@given(parse("we parse the output as {language_name}"), target_fixture="parsed_output")
def parse_output_as_language(cli_run, language_name):
    language_name = language_name.upper()
    actual_output = cli_run["stdout"]

    if language_name == "XML":
        parsed_output = ET.fromstring(actual_output)
    elif language_name == "JSON":
        parsed_output = json.loads(actual_output)
    else:
        assert False, f"Language name {language_name} not recognized"

    return {"lang": language_name, "obj": parsed_output}


@given(parse('the home directory is called "{home_dir}"'))
def home_directory(temp_dir, home_dir, monkeypatch):
    home_path = os.path.join(temp_dir.name, home_dir)
    monkeypatch.setenv("USERPROFILE", home_path)  # for windows
    monkeypatch.setenv("HOME", home_path)  # for *nix