from __future__ import annotations

import subprocess
import sys
from pathlib import Path

import pytest

ROOT = Path(__file__).parents[2]


def test_v1_executable_packages_are_absent() -> None:
    assert not (ROOT / "backend" / "app").exists()
    assert not (ROOT / "backend" / "backup").exists()
    assert not (ROOT / "backend" / "tests").exists()
    assert not (ROOT / "frontend" / "src" / "api" / "client.ts").exists()


def test_v1_reference_tag_exists() -> None:
    result = subprocess.run(
        ["git", "tag", "--list", "v1-reference-2026-07-27"],
        cwd=ROOT,
        capture_output=True,
        check=False,
        text=True,
    )
    assert result.returncode == 0
    assert result.stdout.strip() == "v1-reference-2026-07-27"


def run_scanner(root: Path) -> subprocess.CompletedProcess[str]:
    return subprocess.run(
        [sys.executable, str(ROOT / "tools/forbidden_v1_scan.py"), str(root)],
        cwd=ROOT,
        capture_output=True,
        check=False,
        text=True,
    )


def test_forbidden_v1_scanner_accepts_runtime_tree() -> None:
    result = run_scanner(ROOT)
    assert result.returncode == 0, result.stdout + result.stderr


@pytest.mark.parametrize(
    ("relative_path", "canary"),
    [
        ("backend/src/backup_tool/database.py", 'DB_PATH = "backup_tool.db"'),
        ("backend/src/backup_tool/payload.py", "def read_legacy_payload(): ..."),
        ("backend/src/backup_tool/importer.py", "class LegacyBackupImporter: ..."),
        ("backend/src/backup_tool/converter.py", "def convert_v1_backup(): ..."),
        ("backend/src/backup_tool/layout.py", 'FORMAT = "%Y-%m-%d_%H%M%S"'),
        ("docker-compose.yml", "command: uvicorn app.main:app"),
    ],
)
def test_forbidden_v1_scanner_rejects_runtime_and_config_canaries(
    tmp_path: Path,
    relative_path: str,
    canary: str,
) -> None:
    path = tmp_path / relative_path
    path.parent.mkdir(parents=True, exist_ok=True)
    path.write_text(canary, encoding="utf-8")

    result = run_scanner(tmp_path)

    assert result.returncode == 1, relative_path
    assert str(relative_path) in result.stderr