import MailSenderNew
import demistomock as demisto
import pytest
import hmac
import hashlib

RETURN_ERROR_TARGET = "MailSenderNew.return_error"


@pytest.mark.parametrize(
    "subject,subj_include,headers",
    [
        ("test-before\ntest-after", "test-after", "foo=baz"),
        ("test-before\ntest-after", "test-after", "foo=baz"),
        ("\xd7\xa2\xd7\x91\xd7\xa8\xd7\x99\xd7\xaa", "=?utf-8?", "foo=baz"),
        # non-ascii  char utf-8 encoded
        ("עברית", "=?utf-8?", "foo=baz"),
    ],
)  # noqa: E124
def test_create_msg(mocker, subject, subj_include, headers):
    mocker.patch.object(
        demisto,
        "args",
        return_value={
            "to": "test@test.com,test1@test.com",  # disable-secrets-detection
            "from": "test@test.com",
            "bcc": "bcc@test.com",  # disable-secrets-detection
            "cc": "cc@test.com",  # disable-secrets-detection
            "subject": subject,
            "body": "this is the body",
            "additionalHeader": headers,
        },
    )
    mocker.patch.object(
        demisto,
        "params",
        return_value={
            "from": "test@test.com",
        },
    )
    (body, html_body, msg, to, cc, bcc) = MailSenderNew.create_msg()
    assert to == ["test@test.com", "test1@test.com"]  # disable-secrets-detection
    assert cc == ["cc@test.com"]  # disable-secrets-detection
    assert bcc == ["bcc@test.com"]  # disable-secrets-detection
    assert body == "this is the body"  # disable-secrets-detection
    assert html_body == ""  # disable-secrets-detection
    lines = msg.splitlines()
    subj = [x for x in lines if "Subject" in x][0]
    assert subj_include in subj
    assert "foo" in msg


def test_debug_smtp(mocker):
    """
    Test that when we do test-module and fail we collect the server debug log
    """
    mocker.patch.object(demisto, "params", return_value={"from": "test@test.com", "host": "localhost", "port": "2025"})
    mocker.patch.object(demisto, "command", return_value="test-module")
    demisto_error = mocker.patch.object(demisto, "error")
    return_error_mock = mocker.patch(RETURN_ERROR_TARGET)
    MailSenderNew.main()
    assert return_error_mock.call_count == 1
    assert demisto_error.call_count == 1
    # LOG should at least contain: "connect: " with port
    assert MailSenderNew.LOG.messages
    assert "2025" in MailSenderNew.LOG.messages[0]


def test_hmac(mocker):
    """
    Test that hmac is able to handle unicode user/pass
    """
    mocker.patch.object(demisto, "params", return_value={"credentials": {"identifier": "user", "password": "pass"}})
    user, password = MailSenderNew.get_user_pass()
    res = user + hmac.HMAC(str.encode(password), b"test", hashlib.sha256).hexdigest()
    assert len(res) > 0


@pytest.mark.parametrize(
    "template_params_arg",
    ['{"name": {"value": "hello3"}}', ({"name": {"value": "hello3"}}), ({"name": {"key": "key_from_context"}})],
)
def test_template_params(mocker, template_params_arg):
    """
    Given:
        A templateParams argument
            Case A: As a string type.
            Case B: As a dict type.
    When:
        Calling template_params().
    Then:
        - Make sure providing both JSON and JSON string objects for the argument is supported.
        - Make sure that for "key" field the method takes the value from the context.
        - Make sure that for "value" field the method takes the provided value.
    """
    mocker.patch.object(demisto, "getArg", return_value=template_params_arg)
    mocker.patch.object(demisto, "context", return_value={"key_from_context": "value_from_context"})
    mocker.patch.object(demisto, "dt", side_effect=lambda context, k: context.get(k))
    actual_params = MailSenderNew.parse_template_params()
    if "key" in str(template_params_arg):
        assert actual_params == {"name": "value_from_context"}
    else:
        assert actual_params == {"name": "hello3"}


def test_attachments(mocker):
    mocker.patch.object(
        demisto,
        "args",
        return_value={
            "attachIDs": "123456",
            "attachNames": "attach.txt",
            "body": "this is a test by UT",
            "subject": "special test via UT",
            "to": "admin@test.com",
            "transientFile": "test1.txt,test2.txt",
            "transientFileContent": "content1,content2",
        },
    )
    mocker.patch.object(demisto, "params", return_value={"from": "test@test.com"})
    mocker.patch.object(demisto, "getFilePath", return_value={"path": "test_data/attachment.txt", "name": "attachment.txt"})

    (_, _, msg, _, _, _) = MailSenderNew.create_msg()
    decode_files_content = ["Y29udGVudA==", "Y29udGVudDE=", "Y29udGVudDI="]

    assert all(file_name in msg for file_name in ["attach.txt", "test1.txt", "test2.txt"])
    assert all(decode_file_content in msg for decode_file_content in decode_files_content)


@pytest.mark.parametrize(
    "args, params, expected_from",
    [
        pytest.param(
            {"to": "test@test.com", "subject": "test", "body": "test", "sender": "override@test.com"},
            {"from": "default@test.com"},
            "override@test.com",
            id="use_explicit_sender_override",
        ),
        pytest.param(
            {"to": "test@test.com", "subject": "test", "body": "test"},
            {"from": "default@test.com"},
            "default@test.com",
            id="fallback_to_default_sender",
        ),
    ],
)
def test_create_msg_sender_override(mocker, args, params, expected_from):
    """
    Given:
        - Case A: 'sender' argument is provided in demisto.args().
        - Case B: 'sender' argument is NOT provided in demisto.args().
    When:
        - Calling create_msg().
    Then:
        - In Case A, the 'From' header should be the 'sender' argument.
        - In Case B, the 'From' header should be the 'from' parameter from the integration configuration.
    """
    mocker.patch.object(demisto, "args", return_value=args)
    mocker.patch.object(demisto, "params", return_value=params)

    (_, _, msg, _, _, _) = MailSenderNew.create_msg()

    assert f"From: {expected_from}" in msg