"""Tests for scripts/release.py (loaded by path, not as a package)."""

import importlib.util
import json
from pathlib import Path

import pytest

SPEC = importlib.util.spec_from_file_location(
    "release_script",
    str(Path(__file__).resolve().parent.parent / "scripts" / "release.py"),
)
release = importlib.util.module_from_spec(SPEC)
SPEC.loader.exec_module(release)


def test_compute_next_version_bumps():
    assert release.compute_next_version("0.2.2", "patch") == "0.2.3"
    assert release.compute_next_version("0.2.2", "minor") == "0.3.0"
    assert release.compute_next_version("0.2.2", "major") == "1.0.0"
    assert release.compute_next_version("0.2.2", "0.5.1") == "0.5.1"
    with pytest.raises(ValueError):
        release.compute_next_version("0.2.2", "banana")


def test_extract_changelog_sections():
    text = (
        "# Changelog\n\n## [0.2.3] - 2026-08-12\n\n- Added foo\n- Fixed bar\n\n"
        "## [0.2.2] - 2026-08-01\n\n- Old\n"
    )
    assert release.extract_changelog(text, "0.2.3") == "- Added foo\n- Fixed bar"
    assert release.extract_changelog(text, "0.2.2") == "- Old"
    assert release.extract_changelog(text, "9.9.9") is None


def test_write_checksums(tmp_path):
    a = tmp_path / "a.whl"
    a.write_bytes(b"aaa")
    b = tmp_path / "b.tgz"
    b.write_bytes(b"bbb")
    dest = tmp_path / "checksums.txt"
    release.write_checksums([a, b], dest)
    import hashlib

    lines = dest.read_text().splitlines()
    assert f"{hashlib.sha256(b'aaa').hexdigest()}  a.whl" in lines
    assert f"{hashlib.sha256(b'bbb').hexdigest()}  b.tgz" in lines


def test_release_state_resume(tmp_path):
    state_file = tmp_path / "state.json"
    st = release.ReleaseState(state_file)
    assert not st.is_done("bump")
    st.mark_done("bump")
    st2 = release.ReleaseState(state_file)
    assert st2.is_done("bump")
    assert not st2.is_done("build")


def test_main_dry_run_makes_no_changes(tmp_path):
    backend = tmp_path / "backend"
    webui = tmp_path / "webui"
    backend.mkdir()
    webui.mkdir()
    (backend / "pyproject.toml").write_text('[project]\nversion = "0.2.2"\n')
    calls = []

    def fake_run(cmd, **kw):
        calls.append(cmd)

        class R:
            returncode = 0
            stdout = "main" if "branch" in cmd else ""
            stderr = ""

            def check_returncode(self):
                pass

        return R()

    rc = release.main(
        ["patch", "--webui-repo", str(webui), "--dry-run"],
        run=fake_run,
        repo_root=backend,
    )
    assert rc == 0
    assert '"0.2.2"' in (backend / "pyproject.toml").read_text()  # dry-run changes nothing


def test_main_requires_token_without_dry_run(tmp_path, monkeypatch):
    backend = tmp_path / "backend"
    webui = tmp_path / "webui"
    backend.mkdir()
    webui.mkdir()
    (backend / "pyproject.toml").write_text('[project]\nversion = "0.2.2"\n')
    monkeypatch.delenv("EVOSCIENTIST_RELEASE_TOKEN", raising=False)
    rc = release.main(
        ["patch", "--webui-repo", str(webui)],
        run=lambda *a, **k: None,
        repo_root=backend,
    )
    assert rc == 2