"""Tests for automatic live database-contract injection into Leo turns."""

from __future__ import annotations

import importlib.util
import json
import subprocess
from pathlib import Path
from types import SimpleNamespace

ROOT = Path(__file__).resolve().parents[1]
PLUGIN = ROOT / "hermes-agent" / "leoclean-plugins" / "vps" / "leo-db-context" / "__init__.py"


def load_plugin():
    spec = importlib.util.spec_from_file_location("leo_db_context_plugin", PLUGIN)
    assert spec and spec.loader
    module = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(module)
    return module


def test_plugin_registers_pre_llm_call_hook() -> None:
    module = load_plugin()
    registered = []
    module.register(SimpleNamespace(register_hook=lambda name, callback: registered.append((name, callback))))
    assert len(registered) == 1
    assert registered[0][0] == "pre_llm_call"


def test_plugin_injects_only_operational_contracts_and_writes_redacted_trace(
    tmp_path: Path, monkeypatch
) -> None:
    module = load_plugin()
    home = tmp_path / "profile"
    kb_tool = home / "bin" / "kb_tool.py"
    kb_tool.parent.mkdir(parents=True)
    kb_tool.write_text("# fixture\n", encoding="utf-8")
    trace = tmp_path / "trace.jsonl"
    monkeypatch.setenv("LEO_DB_CONTEXT_TRACE_PATH", str(trace))
    payload = {
        "query": "must not be injected",
        "claims": [{"text": "must not be injected"}],
        "operational_contracts": [
            {"id": "reply_budget", "hard_max_words": 220},
            {"id": "source_intake", "capability_tier": "build-local compiler only"},
        ],
    }
    calls = []

    def fake_runner(command, **kwargs):
        calls.append((command, kwargs))
        return subprocess.CompletedProcess(command, 0, stdout=json.dumps(payload), stderr="")

    context = module.build_database_context(
        "operator secret-shaped but nonsecret message", hermes_home=home, runner=fake_runner
    )

    assert "reply_budget" in context
    assert "source_intake" in context
    assert "build-local compiler only" in context
    assert "must not be injected" not in context
    assert "operator secret-shaped" not in trace.read_text(encoding="utf-8")
    record = json.loads(trace.read_text(encoding="utf-8"))
    assert record["status"] == "ok"
    assert record["injected"] is True
    assert record["contract_ids"] == ["reply_budget", "source_intake"]
    command, kwargs = calls[0]
    assert command[2:5] == ["--local", "context", "operator secret-shaped but nonsecret message"]
    assert command[-6:] == ["--limit", "0", "--context-limit", "0", "--format", "json"]
    assert kwargs["timeout"] == module.DEFAULT_TIMEOUT_SECONDS


def test_plugin_fails_closed_when_database_contract_lookup_fails(tmp_path: Path) -> None:
    module = load_plugin()
    home = tmp_path / "profile"
    kb_tool = home / "bin" / "kb_tool.py"
    kb_tool.parent.mkdir(parents=True)
    kb_tool.write_text("# fixture\n", encoding="utf-8")

    def fake_runner(command, **_kwargs):
        return subprocess.CompletedProcess(command, 9, stdout="", stderr="database unavailable")

    context = module.build_database_context("What is live?", hermes_home=home, runner=fake_runner)
    assert 'status="unavailable"' in context
    assert "Do not infer current schema" in context
    assert "database unavailable" not in context


def test_handler_harness_retains_database_context_proof_fields() -> None:
    source = (ROOT / "scripts" / "run_leo_direct_claim_handler_suite.py").read_text(encoding="utf-8")
    assert "LEO_DB_CONTEXT_TRACE_PATH" in source
    assert '"database_context_trace"' in source
    assert '"database_context_injection_count"' in source
    assert '"database_context_all_ok"' in source