import os
import sys
import unittest

import pytest

maketrans = str.maketrans
import rdflib

"""
SWAP N3 parser test suite
"""

rdf = rdflib.Namespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#")
rdfs = rdflib.Namespace("http://www.w3.org/2000/01/rdf-schema#")
xsd = rdflib.Namespace("http://www.w3.org/2001/XMLSchema#")
owl = rdflib.Namespace("http://www.w3.org/2002/07/owl#")
test = rdflib.Namespace("http://www.w3.org/2000/10/swap/test.n3#")
n3test = rdflib.Namespace("http://www.w3.org/2004/11/n3test#")
rdft = rdflib.Namespace("http://www.w3.org/2000/10/rdf-tests/rdfcore/testSchema#")
triage = rdflib.Namespace("http://www.w3.org/2000/10/swap/test/triage#")
mf = rdflib.Namespace("http://www.w3.org/2001/sw/DataAccess/tests/test-manifest#")
qt = rdflib.Namespace("http://www.w3.org/2001/sw/DataAccess/tests/test-query#")


# class TestSWAPN3(unittest.TestCase):
#     """SWAP 2000/10/n3 tests"""

#     def setUp(self):

#     def test_foo(self):
#         """footest"""
#         self.graph.parse(os.getcwd()+'/test/swap-n3/n3-rdf.tests', format="n3")
#         tfiles = []
#         for tst in self.graph.subjects():
#             files = [str(tfile).replace('http://www.w3.org/2000/10/', 'file://'+os.getcwd()+'/test/swap-n3/')
#                         for tfile in self.graph.objects(tst, rdflib.URIRef("http://www.w3.org/2004/11/n3test#inputDocument")) if tfile.endswith('n3')]
#             tfiles += files
#         for tfile in tfiles:
#             self.graph.parse(tfile, format="n3")


skiptests = [
    "syntax_neg_single_quote",
    "syntax_neg_literal_predicate",
    "syntax_this_quantifiers",
    "syntax_trailing_semicolon",
    "syntax_neg_thisadoc",
    "syntax_equals1",
    "syntax_equals2",
    "syntax_this_rules",
    "syntax_neg_keywords3",
    "syntax_zero_objects",
    "syntax_neg_formula_predicate",
    "syntax_zero_predicates",
    # 'syntax_qvars1',
    # 'syntax_qvars2',
    # 'contexts',
    "syntax_too_nested",
]


class Envelope(object):
    def __init__(self, n, f):
        self.name = n
        self.file = f

    def __repr__(self):
        return self.name


def generictest(e):
    """Documentation"""
    if e.skip:
        pytest.skip("%s skipped, known issue" % e.name)
    g = rdflib.Graph()
    for i in [rdf, rdfs, xsd, owl, test, n3test, rdft, triage, mf, qt]:
        g.bind(str(i), i)
    g.parse(e.file, format="n3")


def dir_to_uri(directory, sep=os.path.sep):
    """
    Convert a local path to a File URI.

    >>> dir_to_uri('c:\\\\temp\\\\foo\\\\file.txt', sep='\\\\')
    'file:///c:/temp/foo/file.txt'

    >>> dir_to_uri('/tmp/foo/file.txt', sep='/')
    'file:///tmp/foo/file.txt'
    """
    items = directory.split(sep)
    path = "/".join(items)
    if path.startswith("/"):
        path = path[1:]
    return "file:///%s" % (path,)


def get_cases():
    from copy import deepcopy

    g = rdflib.Graph()
    swap_dir = os.path.join(os.getcwd(), "test", "swap-n3")
    g.parse(os.path.join(swap_dir, "n3-rdf.tests"), format="n3")
    g.parse(os.path.join(swap_dir, "n3-full.tests"), format="n3")
    tfiles = []
    swap_dir_uri = dir_to_uri(swap_dir) + "/"
    for tst in g.subjects():
        files = [
            str(tfile).replace("http://www.w3.org/2000/10/", swap_dir_uri)
            for tfile in g.objects(
                tst, rdflib.URIRef("http://www.w3.org/2004/11/n3test#inputDocument")
            )
            if tfile.endswith("n3")
        ]
        tfiles += files
    for tfile in set(tfiles):
        gname = tfile.split("/swap-n3/swap/test/")[1][:-3].translate(
            maketrans("-/", "__")
        )
        e = Envelope(gname, tfile)
        if gname in skiptests:
            e.skip = True
        else:
            e.skip = False
        # e.skip = True
        if sys.version_info[:2] == (2, 4):
            import pickle

            gjt = pickle.dumps(generictest)
            gt = pickle.loads(gjt)
        else:
            gt = deepcopy(generictest)
        gt.__doc__ = tfile
        yield gt, e


@pytest.mark.parametrize("gt, envelope", get_cases())
def test_cases(gt, envelope):
    gt(envelope)