import json
from pathlib import Path

from app.prompts import render_digest, system_prompt

VALID = json.loads((Path(__file__).parent / "fixtures" / "canon_log_valid.json").read_text())


def test_system_prompt_strips_the_header():
    body = system_prompt("narrator")
    assert isinstance(body, str) and body.strip() != ""
    # The human-facing markdown title above the '---' is not part of the prompt.
    assert "# Narrator prompt" not in body


def test_digest_has_the_narrative_context():
    d = render_digest(VALID)
    assert "Location: the Greywater docks" in d
    assert "Arrived at Greywater by barge before dawn" in d
    assert "Established facts:" in d
    assert "the harbourmaster is named Oda Fenn" in d
    assert "Companions present: Brannoc Thane, Cadwyn Vell" in d
    assert "Active quest: The Missing Ledger — Find who took Fenn's ledger" in d
    assert "Fortune: Fortune spits on you" in d
    assert "Player: Aldric, a sellsword" in d
    assert d.rstrip().endswith("Describe the scene as it is now.")


def test_digest_omits_raw_numbers_and_ids():
    d = render_digest(VALID)
    # §7/§2: no disposition integers, no ids, no schema_version leak into the prompt.
    assert "disposition" not in d
    assert "40" not in d and "15" not in d      # the deserter dispositions
    assert "brannoc_thane" not in d             # ids stay out; names only
    assert "schema_version" not in d


def test_narrator_body_is_authored():
    body = system_prompt.__wrapped__("narrator")  # bypass lru_cache in case of prior load
    assert "TBD" not in body
    assert "[FACT:" in body           # the tag instruction is present
    assert "second person" in body    # the core task is present


def test_render_npc_digest_includes_all_sections():
    from app import prompts
    log = {
        "player": {"name": "Aldric", "class_id": "sellsword", "luck_descriptor": "the dice are kind"},
        "location": {"id": "greywater_docks", "name": "Greywater Docks"},
        "party": [], "recent_events": ["a gull screamed"],
        "established_facts": ["the eastern bridge is out"],
        "active_quests": [], "humiliations": [],
    }
    out = prompts.render_npc_digest(
        log, persona="A harried clerk.", knowledge=["The ledger is gone."],
        disposition=-10, available_moves=["reveal(varrell_twins)", "refuse"],
        utterance="What happened here?",
    )
    assert "A harried clerk." in out
    assert "-10" in out
    assert "The ledger is gone." in out
    assert "reveal(varrell_twins)" in out
    assert "Greywater Docks" in out
    assert "the eastern bridge is out" in out
    assert out.rstrip().endswith('What happened here?"')  # utterance last