import json
from os import chdir, getcwd
from os import path as p
from pathlib import Path

import pytest

from rdflib.term import URIRef

from . import runner

# TODO FIXME: We should be using this URI instead of a file URI, but as there is
# no way to customize URI loading yet this will not work, so instead TC_BASE is
# set to a file-uri further down.
# TC_BASE = "https://rdflib.github.io/rdflib-jsonld/local-testsuite/"

TC_BASE = (Path(__file__).parent / "local-suite").absolute().as_uri() + "/"

testsuite_dir = p.join(p.abspath(p.dirname(__file__)), "local-suite")


def read_manifest():
    f = open(p.join(testsuite_dir, "manifest.jsonld"), "r")
    manifestdata = json.load(f)
    f.close()
    for test in manifestdata.get("sequence"):
        parts = test.get("input", "").split(".")[0].split("-")
        category, name, direction = parts
        inputpath = test.get("input")
        expectedpath = test.get("expect")
        context = test.get("context", False)
        options = test.get("option") or {}
        yield category, name, inputpath, expectedpath, context, options


def get_test_suite_cases():
    for cat, num, inputpath, expectedpath, context, options in read_manifest():
        if inputpath.endswith(".jsonld"):  # toRdf
            if expectedpath.endswith(".jsonld"):  # compact/expand/flatten
                func = runner.do_test_json
            else:  # toRdf
                func = runner.do_test_parser
        else:  # fromRdf
            func = runner.do_test_serializer
        rdf_test_uri = URIRef("{0}{1}-manifest.jsonld#t{2}".format(TC_BASE, cat, num))
        yield rdf_test_uri, func, TC_BASE, cat, num, inputpath, expectedpath, context, options


@pytest.fixture(scope="module", autouse=True)
def testsuide_dir():
    old_cwd = getcwd()
    chdir(testsuite_dir)
    yield
    chdir(old_cwd)


@pytest.mark.parametrize(
    "rdf_test_uri, func, suite_base, cat, num, inputpath, expectedpath, context, options",
    get_test_suite_cases(),
)
def test_suite(
    rdf_test_uri: URIRef,
    func,
    suite_base,
    cat,
    num,
    inputpath,
    expectedpath,
    context,
    options,
):
    func(suite_base, cat, num, inputpath, expectedpath, context, options)