import os

import deltachat
import pytest
from _pytest.pytester import LineMatcher


class ClickRunner:
    def __init__(self, main):
        from click.testing import CliRunner

        self.runner = CliRunner()
        self._main = main
        self._rootargs = []

    def set_basedir(self, account_dir):
        self._rootargs.insert(0, "--basedir")
        self._rootargs.insert(1, account_dir)

    def run_ok(self, args, fnl=None, input=None):
        __tracebackhide__ = True
        argv = self._rootargs + args
        # we use our nextbackup helper to cache account creation
        # unless --no-test-cache is specified
        res = self.runner.invoke(self._main, argv, catch_exceptions=False, input=input)
        if res.exit_code != 0:
            print(res.output)
            raise Exception("cmd exited with %d: %s" % (res.exit_code, argv))
        return _perform_match(res.output, fnl)

    def run_fail(self, args, fnl=None, input=None, code=None):
        __tracebackhide__ = True
        argv = self._rootargs + args
        res = self.runner.invoke(self._main, argv, catch_exceptions=False, input=input)
        if res.exit_code == 0 or (code is not None and res.exit_code != code):
            print(res.output)
            raise Exception(
                "got exit code {!r}, expected {!r}, output: {}".format(
                    res.exit_code,
                    code,
                    res.output,
                ),
            )
        return _perform_match(res.output, fnl)


def _perform_match(output, fnl):
    __tracebackhide__ = True
    if fnl:
        lm = LineMatcher(output.splitlines())
        lines = [x.strip() for x in fnl.strip().splitlines()]
        try:
            lm.fnmatch_lines(lines)
        except Exception:
            print(output)
            raise
    return output


@pytest.fixture
def cmd():
    """invoke a command line subcommand."""
    from teams_bot.cli import teams_bot

    return ClickRunner(teams_bot)


@pytest.fixture
def tmp_file_path(request, tmpdir):
    if request.param:
        path = str(tmpdir) + "/" + str(request.param)
        with open(path, "w+", encoding="utf-8") as f:
            f.write("test")
        return path


@pytest.fixture
def chat(tmpdir):
    token = os.getenv("DCC_NEW_TMP")
    ac = deltachat.Account(str(tmpdir) + "/db.sqlite")
    # create bot account from token
    # create chat partner from token
    # initiate a chat between them
    # return the chat object