from __future__ import annotations

import json
import sys
from pathlib import Path

import pytest


ROOT = Path(__file__).resolve().parents[1]
SKILL = ROOT / "skills" / "technical-doc-flow"
sys.path.insert(0, str(SKILL / "scripts"))
from harness_common import InputError, load_rules, validate_with_schema  # noqa: E402


def test_all_bundled_json_and_schemas_parse() -> None:
    paths = [*SKILL.rglob("*.json"), ROOT / "harness.json"]
    assert paths
    for path in paths:
        value = json.loads(path.read_text(encoding="utf-8"))
        assert isinstance(value, dict), path


def test_quality_rules_have_unique_ids_and_every_runtime_threshold() -> None:
    rules = load_rules()
    ids = [item["id"] for item in rules["rules"]]
    assert len(ids) == len(set(ids))
    assert {
        "DOC-H001",
        "DOC-M002",
        "DOC-L003",
        "DOC-T009",
        "DOC-F005",
        "DOC-M004",
        "FNL-001",
    } <= set(ids)
    assert rules["thresholds"]["route"]["light"]["requires_existing_draft"] is True
    assert rules["thresholds"]["finalization"]["max_change_rate"] == 0.0


def test_artifact_contract_schema_names_exist() -> None:
    expected = {
        "run.schema.json",
        "sources.schema.json",
        "reader-contract.schema.json",
        "evidence-map.schema.json",
        "logic-map.schema.json",
        "term-ledger.schema.json",
        "review.schema.json",
        "lint-report.schema.json",
        "final-report.schema.json",
        "chunk-manifest.schema.json",
        "quality-rules.schema.json",
        "runtime-contract.schema.json",
    }
    actual = {path.name for path in (SKILL / "schemas").glob("*.json")}
    assert expected <= actual


def test_reader_contract_rejects_whitespace_values_and_undeclared_fields() -> None:
    fixture = ROOT / "tests" / "fixtures" / "good" / "reader-contract.json"
    reader = json.loads(fixture.read_text(encoding="utf-8"))
    reader["non_goals"] = ["   "]
    with pytest.raises(InputError):
        validate_with_schema(reader, "reader-contract.schema.json", "reader")

    reader = json.loads(fixture.read_text(encoding="utf-8"))
    reader["undeclared"] = True
    with pytest.raises(InputError):
        validate_with_schema(reader, "reader-contract.schema.json", "reader")