"""Unit tests for the WC5 promote-on-green-cold gate (run_recipe_ci.should_promote_canonical).

Pure predicate. The live promote (deploy canonical at latest → snapshot → registry) is proven on
custom-html (W3). is_enrolled is monkeypatched so the test doesn't depend on which recipes are
enrolled on disk. canon §2.A adds the `tagged` requirement: a promote also requires the tested head
version to be a published release tag (computed by the caller via is_released_version).
"""

from __future__ import annotations

import os
import sys

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "runner"))
import run_recipe_ci as rr  # noqa: E402
from harness import canonical  # noqa: E402


def _enrolled(monkeypatch, val):
    monkeypatch.setattr(canonical, "is_enrolled", lambda r: val)


def test_promote_when_enrolled_green_cold_latest_tagged(monkeypatch):
    _enrolled(monkeypatch, True)
    # green (overall 0), cold (quick False), latest (ref None), tagged → promote
    assert rr.should_promote_canonical("custom-html", None, 0, quick=False, tagged=True) is True
    assert rr.should_promote_canonical("custom-html", "", 0, quick=False, tagged=True) is True


def test_no_promote_when_not_enrolled(monkeypatch):
    _enrolled(monkeypatch, False)
    assert rr.should_promote_canonical("hedgedoc", None, 0, quick=False, tagged=True) is False


def test_no_promote_when_red(monkeypatch):
    _enrolled(monkeypatch, True)
    assert rr.should_promote_canonical("custom-html", None, 1, quick=False, tagged=True) is False


def test_no_promote_when_quick(monkeypatch):
    # --quick never promotes (the canonical advances ONLY via cold)
    _enrolled(monkeypatch, True)
    assert rr.should_promote_canonical("custom-html", None, 0, quick=True, tagged=True) is False


def test_no_promote_on_pr_head(monkeypatch):
    # a PR `!testme` carries REF=PR-head → must NOT advance the canonical to a PR's code
    _enrolled(monkeypatch, True)
    assert (
        rr.should_promote_canonical("custom-html", "abc123def", 0, quick=False, tagged=True)
        is False
    )


def test_no_promote_when_untagged(monkeypatch):
    # canon §2.A: a green cold latest run on an UNTAGGED state (head version is not a release tag)
    # must NOT promote — the canonical is always a real release, never an arbitrary main commit.
    _enrolled(monkeypatch, True)
    assert rr.should_promote_canonical("custom-html", None, 0, quick=False, tagged=False) is False