import unittest

from mopidy_mpd import exceptions, tokenize


class TestTokenizer(unittest.TestCase):
    def assertTokenizeEquals(self, expected, line):  # noqa: N802
        assert expected == tokenize.split(line)

    def assertTokenizeRaises(self, exception, message, line):  # noqa: N802
        with self.assertRaises(exception) as cm:
            tokenize.split(line)
        assert cm.exception.message == message

    def test_empty_string(self):
        ex = exceptions.MpdNoCommand
        msg = "No command given"
        self.assertTokenizeRaises(ex, msg, "")
        self.assertTokenizeRaises(ex, msg, "      ")
        self.assertTokenizeRaises(ex, msg, "\t\t\t")

    def test_command(self):
        self.assertTokenizeEquals(["test"], "test")
        self.assertTokenizeEquals(["test123"], "test123")
        self.assertTokenizeEquals(["foo_bar"], "foo_bar")

    def test_command_trailing_whitespace(self):
        self.assertTokenizeEquals(["test"], "test   ")
        self.assertTokenizeEquals(["test"], "test\t\t\t")

    def test_command_leading_whitespace(self):
        ex = exceptions.MpdUnknownError
        msg = "Letter expected"
        self.assertTokenizeRaises(ex, msg, "  test")
        self.assertTokenizeRaises(ex, msg, "\ttest")

    def test_invalid_command(self):
        ex = exceptions.MpdUnknownError
        msg = "Invalid word character"
        self.assertTokenizeRaises(ex, msg, "foo/bar")
        self.assertTokenizeRaises(ex, msg, "æøå")
        self.assertTokenizeRaises(ex, msg, "test?")
        self.assertTokenizeRaises(ex, msg, 'te"st')

    def test_unquoted_param(self):
        self.assertTokenizeEquals(["test", "param"], "test param")
        self.assertTokenizeEquals(["test", "param"], "test\tparam")

    def test_unquoted_param_leading_whitespace(self):
        self.assertTokenizeEquals(["test", "param"], "test  param")
        self.assertTokenizeEquals(["test", "param"], "test\t\tparam")

    def test_unquoted_param_trailing_whitespace(self):
        self.assertTokenizeEquals(["test", "param"], "test param  ")
        self.assertTokenizeEquals(["test", "param"], "test param\t\t")

    def test_unquoted_param_invalid_chars(self):
        ex = exceptions.MpdArgError
        msg = "Invalid unquoted character"
        self.assertTokenizeRaises(ex, msg, 'test par"m')
        self.assertTokenizeRaises(ex, msg, "test foo\bbar")
        self.assertTokenizeRaises(ex, msg, 'test foo"bar"baz')
        self.assertTokenizeRaises(ex, msg, "test foo'bar")

    def test_unquoted_param_numbers(self):
        self.assertTokenizeEquals(["test", "123"], "test 123")
        self.assertTokenizeEquals(["test", "+123"], "test +123")
        self.assertTokenizeEquals(["test", "-123"], "test -123")
        self.assertTokenizeEquals(["test", "3.14"], "test 3.14")

    def test_unquoted_param_extended_chars(self):
        self.assertTokenizeEquals(["test", "æøå"], "test æøå")
        self.assertTokenizeEquals(["test", "?#$"], "test ?#$")
        self.assertTokenizeEquals(["test", "/foo/bar/"], "test /foo/bar/")
        self.assertTokenizeEquals(["test", "foo\\bar"], "test foo\\bar")

    def test_unquoted_params(self):
        self.assertTokenizeEquals(["test", "foo", "bar"], "test foo bar")

    def test_quoted_param(self):
        self.assertTokenizeEquals(["test", "param"], 'test "param"')
        self.assertTokenizeEquals(["test", "param"], 'test\t"param"')

    def test_quoted_param_leading_whitespace(self):
        self.assertTokenizeEquals(["test", "param"], 'test  "param"')
        self.assertTokenizeEquals(["test", "param"], 'test\t\t"param"')

    def test_quoted_param_trailing_whitespace(self):
        self.assertTokenizeEquals(["test", "param"], 'test "param"  ')
        self.assertTokenizeEquals(["test", "param"], 'test "param"\t\t')

    def test_quoted_param_invalid_chars(self):
        ex = exceptions.MpdArgError
        msg = "Space expected after closing '\"'"
        self.assertTokenizeRaises(ex, msg, 'test "foo"bar"')
        self.assertTokenizeRaises(ex, msg, 'test "foo"bar" ')
        self.assertTokenizeRaises(ex, msg, 'test "foo"bar')
        self.assertTokenizeRaises(ex, msg, 'test "foo"bar ')

    def test_quoted_param_numbers(self):
        self.assertTokenizeEquals(["test", "123"], 'test "123"')
        self.assertTokenizeEquals(["test", "+123"], 'test "+123"')
        self.assertTokenizeEquals(["test", "-123"], 'test "-123"')
        self.assertTokenizeEquals(["test", "3.14"], 'test "3.14"')

    def test_quoted_param_spaces(self):
        self.assertTokenizeEquals(["test", "foo bar"], 'test "foo bar"')
        self.assertTokenizeEquals(["test", "foo bar"], 'test "foo bar"')
        self.assertTokenizeEquals(["test", " param\t"], 'test " param\t"')

    def test_quoted_param_extended_chars(self):
        self.assertTokenizeEquals(["test", "æøå"], 'test "æøå"')
        self.assertTokenizeEquals(["test", "?#$"], 'test "?#$"')
        self.assertTokenizeEquals(["test", "/foo/bar/"], 'test "/foo/bar/"')

    def test_quoted_param_escaping(self):
        self.assertTokenizeEquals(["test", "\\"], r'test "\\"')
        self.assertTokenizeEquals(["test", '"'], r'test "\""')
        self.assertTokenizeEquals(["test", " "], r'test "\ "')
        self.assertTokenizeEquals(["test", "\\n"], r'test "\\\n"')

    def test_quoted_params(self):
        self.assertTokenizeEquals(["test", "foo", "bar"], 'test "foo" "bar"')

    def test_mixed_params(self):
        self.assertTokenizeEquals(["test", "foo", "bar"], 'test foo "bar"')
        self.assertTokenizeEquals(["test", "foo", "bar"], 'test "foo" bar')
        self.assertTokenizeEquals(["test", "1", "2"], 'test 1 "2"')
        self.assertTokenizeEquals(["test", "1", "2"], 'test "1" 2')

        self.assertTokenizeEquals(
            ["test", "foo bar", "baz", "123"], 'test "foo bar" baz 123'
        )
        self.assertTokenizeEquals(
            ["test", 'foo"bar', "baz", "123"], r'test "foo\"bar" baz 123'
        )

    def test_unbalanced_quotes(self):
        ex = exceptions.MpdArgError
        msg = "Invalid unquoted character"
        self.assertTokenizeRaises(ex, msg, 'test "foo bar" baz"')

    def test_missing_closing_quote(self):
        ex = exceptions.MpdArgError
        msg = "Missing closing '\"'"
        self.assertTokenizeRaises(ex, msg, 'test "foo')
        self.assertTokenizeRaises(ex, msg, 'test "foo a ')