"""Rule (c): the first real prompt fuzzy-matched to one note's text."""

from __future__ import annotations

from typing import TYPE_CHECKING

from python_pkg.token_audit import notes_backlog, notes_link, notes_scan
from python_pkg.token_audit.tests import test_notes_fixtures as fx

if TYPE_CHECKING:
    from pathlib import Path


def _notes(tmp_path: Path) -> list[notes_backlog.Note]:
    return notes_backlog.parse_backlog(fx.backlog(tmp_path / "B.md").read_text())


def _link(tmp_path: Path, *texts: str) -> notes_link.Link | None:
    root = tmp_path / "projects"
    fx.transcript(root, "s1", [fx.prompt(t) for t in texts])
    return notes_link.link_all(notes_scan.scan_root(root), _notes(tmp_path)).get("s1")


def test_pasted_note_body_links(tmp_path: Path) -> None:
    pasted = f'<pasted_content id="ab12">\n{fx.BODY_B}\n</pasted_content>\nplease'
    assert _link(tmp_path, pasted) == notes_link.Link((fx.NOTE_B,), "c")


def test_title_only_prompt_links_by_first_line(tmp_path: Path) -> None:
    link = _link(tmp_path, "diet guard meal times picker")
    assert link == notes_link.Link((fx.NOTE_A,), "c")


def test_unrelated_prompt_does_not_link(tmp_path: Path) -> None:
    assert _link(tmp_path, "restart the steam backlog enforcer while game runs") is None


def test_only_first_prompt_is_matched(tmp_path: Path) -> None:
    assert _link(tmp_path, "unrelated opening words here now", fx.BODY_A) is None


def test_short_prompt_is_never_matched(tmp_path: Path) -> None:
    assert _link(tmp_path, "horror game") is None


def test_wrappers_and_caveats_are_skipped(tmp_path: Path) -> None:
    link = _link(
        tmp_path,
        "<command-name>/clear</command-name>",
        "Caveat: the messages below were generated by the user",
        f"<system-reminder>noise</system-reminder>{fx.BODY_A}",
    )
    assert link == notes_link.Link((fx.NOTE_A,), "c")


def test_list_content_prompt_is_read(tmp_path: Path) -> None:
    root = tmp_path / "projects"
    record = fx.prompt("")
    record["message"]["content"] = [{"type": "text", "text": fx.BODY_B}]
    fx.transcript(root, "s1", [record])
    links = notes_link.link_all(notes_scan.scan_root(root), _notes(tmp_path))
    assert links["s1"].notes == (fx.NOTE_B,)


def test_score_is_symmetric_dice_or_title() -> None:
    note = notes_backlog.Note("n", "alpha beta gamma delta", "x", "low", "todo", None)
    assert notes_link.score("alpha beta gamma delta", note) == 1.0
    assert notes_link.score("zeta eta theta iota", note) == 0.0