from __future__ import annotations

from pathlib import Path

import pytest

from src.parser import StoryValidationError, parse_story


def test_parse_story_success() -> None:
    parsed = parse_story(Path("data/main_story.yaml"))
    assert parsed.story.story_id == "demo_story"
    assert parsed.story.start == "intro"
    assert "gate" in parsed.story.nodes


def test_parse_story_missing_target_fails(tmp_path: Path) -> None:
    bad_story = tmp_path / "bad.yaml"
    bad_story.write_text(
        """
story_id: bad
start: a
nodes:
  - id: a
    text: hello
    options:
      - text: go
        target: missing
""".strip(),
        encoding="utf-8",
    )

    with pytest.raises(StoryValidationError):
        parse_story(bad_story)


def test_parse_story_invalid_effect_fails(tmp_path: Path) -> None:
    bad_story = tmp_path / "bad_effect.yaml"
    bad_story.write_text(
        """
story_id: bad_effect
start: a
nodes:
  - id: a
    text: hello
    effects:
      - hp **= 2
    end: true
""".strip(),
        encoding="utf-8",
    )

    with pytest.raises(StoryValidationError):
        parse_story(bad_story)