from pathlib import Path

import pytest

from content_build.errors import BuildError
from content_build.parse import parse_bible

BIBLE = """# A bible

Some prose that must be ignored.

```yaml
id: town.a
type: town
status: canon
secrecy: 0
related: []
body: >
  Town A.
```

More prose.

```yaml
id: rumor.x
type: rumor
status: canon
secrecy: 1
related: [town.a]
body: >
  A rumor.
```
"""


def _write(tmp_path: Path, text: str) -> Path:
    p = tmp_path / "bible.md"
    p.write_text(text)
    return p


def test_extracts_yaml_blocks_and_ignores_prose(tmp_path):
    entries = parse_bible(_write(tmp_path, BIBLE))
    assert [e.data["id"] for e in entries] == ["town.a", "rumor.x"]


def test_source_carries_filename_and_line(tmp_path):
    entries = parse_bible(_write(tmp_path, BIBLE))
    assert entries[0].source.startswith("bible.md:")


def test_unterminated_block_raises(tmp_path):
    bad = "```yaml\nid: town.a\n"  # no closing fence
    with pytest.raises(BuildError):
        parse_bible(_write(tmp_path, bad))


def test_non_mapping_block_raises(tmp_path):
    bad = "```yaml\n- just\n- a\n- list\n```\n"
    with pytest.raises(BuildError):
        parse_bible(_write(tmp_path, bad))