"""Regression test for task path conventions in prompts and templates."""

import re
from pathlib import Path

import pytest

ROOT = Path(__file__).resolve().parent.parent
PROMPTS_DIR = ROOT / "prompts"
TEMPLATES_DIR = ROOT / "templates"

# Legacy path pattern that should no longer appear.
LEGACY_PATH = re.compile(r"\{project\}/tasks/\{task-name\}/")
# Canonical path pattern that should be used instead.
CANONICAL_PATH = re.compile(r"\{project\}/\.automaton/tasks/\{task-name\}/")


def _markdown_files(*directories: Path) -> list[Path]:
    files = []
    for directory in directories:
        if directory.exists():
            files.extend(directory.rglob("*.md"))
    return files


@pytest.mark.parametrize("path", _markdown_files(PROMPTS_DIR, TEMPLATES_DIR))
def test_no_legacy_task_paths(path: Path) -> None:
    """Every prompt/template must use the canonical .automaton/tasks path."""
    text = path.read_text(encoding="utf-8")
    legacy_matches = LEGACY_PATH.findall(text)
    assert not legacy_matches, (
        f"Found legacy task path in {path.relative_to(ROOT)}: {legacy_matches}\n"
        "Use {project}/.automaton/tasks/{task-name}/ instead."
    )


def test_canonical_path_present_in_prompts() -> None:
    """At least one prompt uses the canonical path (sanity check)."""
    found = False
    for path in _markdown_files(PROMPTS_DIR):
        if CANONICAL_PATH.search(path.read_text(encoding="utf-8")):
            found = True
            break
    assert found, "No prompt uses the canonical {project}/.automaton/tasks/{task-name}/ path"