import json

import app.content as content


def test_load_npc_returns_parsed_file(tmp_path, monkeypatch):
    root = tmp_path / "content"
    (root / "world" / "npcs").mkdir(parents=True)
    (root / "world" / "npcs" / "fenn.json").write_text(
        json.dumps({"id": "fenn", "name": "Fenn", "persona": "clerk",
                    "knowledge": ["a"], "capabilities": {}})
    )
    monkeypatch.setenv("CONTENT_ROOT", str(root))
    npc = content.load_npc("fenn")
    assert npc["name"] == "Fenn"
    assert npc["knowledge"] == ["a"]


def test_load_npc_unknown_returns_none(tmp_path, monkeypatch):
    (tmp_path / "content" / "world").mkdir(parents=True)
    monkeypatch.setenv("CONTENT_ROOT", str(tmp_path / "content"))
    assert content.load_npc("nobody") is None


def test_content_root_env_override(tmp_path, monkeypatch):
    monkeypatch.setenv("CONTENT_ROOT", str(tmp_path))
    assert content._content_root() == tmp_path


def test_fenn_resolves_from_repo_content():
    # No CONTENT_ROOT env — exercises the walk-up resolver against real content.
    npc = content.load_npc("fenn")
    assert npc is not None
    assert npc["capabilities"]["offerable_quests"] == ["find_the_ledger"]
    assert npc["knowledge"]  # non-empty authored knowledge list


def test_npc_prompt_body_is_authored():
    from app import prompts
    body = prompts.system_prompt("npc")
    assert "MOVE" in body and len(body) > 200