from __future__ import annotations

import subprocess
from pathlib import Path

from repo_manager.cache import build_closed_provenance_export, cache_status
from repo_manager.index_store import save_index
from repo_manager.observe import observe_repository


def _git(repo: Path, *args: str) -> None:
    subprocess.run(["git", *args], cwd=repo, check=True, capture_output=True)


def _repo(tmp_path: Path) -> Path:
    repo = tmp_path / "example"
    (repo / "workplans").mkdir(parents=True)
    _git(repo, "init")
    _git(repo, "config", "user.email", "test@example.com")
    _git(repo, "config", "user.name", "Test")
    (repo / "workplans" / "EX-WP-0001.md").write_text(
        "---\nid: EX-WP-0001\ntitle: Example\nstatus: active\n---\n",
        encoding="utf-8",
    )
    _git(repo, "add", ".")
    _git(repo, "commit", "-m", "seed")
    return repo


def test_cache_status_reports_age_and_detects_source_drift(tmp_path: Path) -> None:
    repo = _repo(tmp_path)
    missing = cache_status(repo)
    assert missing["cache_present"] is False
    assert missing["stale_reasons"] == ["cache_missing"]

    _snapshot, index = observe_repository(repo)
    save_index(index)
    fresh = cache_status(repo)
    assert fresh["advisory"] is True
    assert fresh["stale"] is False
    assert fresh["age_seconds"] >= 0

    path = repo / "workplans" / "EX-WP-0001.md"
    path.write_text(path.read_text(encoding="utf-8") + "\nChanged.\n", encoding="utf-8")
    stale = cache_status(repo)
    assert stale["stale"] is True
    assert stale["stale_reasons"] == ["authoritative_source_changed"]


def test_closed_export_excludes_live_and_bound_rows() -> None:
    workplans = [
        {"id": "1", "repo_id": "r1", "slug": "closed", "status": "finished"},
        {"id": "2", "repo_id": "r1", "slug": "live", "status": "active"},
        {
            "id": "3",
            "repo_id": "r1",
            "slug": "bound",
            "status": "archived",
            "backing_filename": "bound.md",
        },
    ]
    result = build_closed_provenance_export(
        workplans,
        [{"id": "r1", "slug": "example"}],
        source="http://state-hub.test",
    )

    assert result["count"] == 1
    assert result["rows"][0]["slug"] == "closed"
    assert result["rows"][0]["repo_slug"] == "example"
    assert len(result["rows_sha256"]) == 64