# retoor <retoor@molodetz.nl>

import pytest

from devplacepy.services.skills import limits
from devplacepy.services.skills.fetcher import (
    SkillFetchError,
    classify_candidate,
    decode_text,
    directory_url,
    extract_candidates,
    normalize_input_url,
    origin_of,
)
from devplacepy.services.skills.parser import SkillFormatError


def test_normalize_adds_scheme_and_strips_fragment():
    assert normalize_input_url("example.org/skill#frag") == "https://example.org/skill"
    assert normalize_input_url("  http://example.org/a/SKILL.md ") == "http://example.org/a/SKILL.md"


@pytest.mark.parametrize(
    "raw",
    ["", "   ", "ftp://example.org/x", "https://user:pw@example.org/x", "x" * (limits.URL_MAX_CHARS + 1)],
)
def test_normalize_rejects_bad_urls(raw):
    with pytest.raises(SkillFetchError):
        normalize_input_url(raw)


@pytest.mark.parametrize(
    "url,expected",
    [
        ("https://e.org/a/SKILL.md", "https://e.org/a/"),
        ("https://e.org/a/index.html", "https://e.org/a/"),
        ("https://e.org/a", "https://e.org/a/"),
        ("https://e.org/a/", "https://e.org/a/"),
        ("https://e.org", "https://e.org/"),
    ],
)
def test_directory_url(url, expected):
    assert directory_url(url) == expected


def test_origin_uses_default_ports():
    assert origin_of("https://Example.org/x") == ("https", "example.org", 443)
    assert origin_of("http://example.org:8080/x") == ("http", "example.org", 8080)


def test_candidates_come_from_links_and_code_spans_once():
    body = (
        "See [the script](scripts/run.py) and `references/guide.md`.\n"
        "Again [dup](scripts/run.py#anchor) and [other](docs/readme.md) and `not a path`."
    )
    assert extract_candidates(body) == ["scripts/run.py", "references/guide.md"]


@pytest.mark.parametrize(
    "candidate,accepted",
    [
        ("scripts/run.py", True),
        ("./references/guide.md", True),
        ("assets/templates/SPEC.md", True),
        ("assets/img/hero.png", False),
        ("../scripts/run.py", False),
        ("scripts/../../etc/passwd", False),
        ("scripts/%2e%2e/x.py", False),
        ("scripts/a.py?x=1", False),
        ("/scripts/run.py", False),
        ("https://evil.org/scripts/run.py", False),
        ("scripts\\run.py", False),
        ("other/run.py", False),
        ("scripts", False),
        ("scripts/sp ace.py", False),
    ],
)
def test_classify_candidate_only_accepts_safe_relative_text_paths(candidate, accepted):
    path, reason = classify_candidate(candidate)
    assert (path is not None) is accepted
    assert (reason == "") is accepted


def test_overlong_path_is_rejected():
    path, reason = classify_candidate("scripts/" + "a" * limits.BUNDLED_PATH_MAX_CHARS + ".py")
    assert path is None and reason


def test_decode_text():
    assert decode_text("héllo".encode("utf-8")) == "héllo"
    with pytest.raises(SkillFormatError):
        decode_text(b"a\x00b")
    with pytest.raises(SkillFormatError):
        decode_text(b"\xff\xfe\xfa")