from __future__ import annotations

import json
import unittest
from pathlib import Path

from tools.build_api_registry import build as build_api_registry
from tools.build_architecture_inventory import build as build_architecture_inventory


ROOT = Path(__file__).resolve().parents[1]
CONFIG = ROOT / "config"


def load(name: str) -> dict:
    return json.loads((CONFIG / name).read_text(encoding="utf-8"))


class GovernanceRegistryTests(unittest.TestCase):
    def setUp(self) -> None:
        self.features = load("features.config.json")
        self.pages = load("pages.config.json")
        self.api = load("api.config.json")
        self.data = load("data-fields.config.json")
        self.quality = load("data-quality.config.json")

    def test_features_are_unique_and_use_declared_roles(self) -> None:
        roles = set(self.features["roles"])
        items = self.features["features"]
        ids = [item["id"] for item in items]
        self.assertEqual(len(ids), len(set(ids)))
        self.assertTrue(all(item["access"] in roles for item in items))
        self.assertTrue(all(isinstance(item["enabled"], bool) for item in items))

    def test_page_registry_matches_the_current_primary_navigation(self) -> None:
        inventory_pages = build_architecture_inventory()["pages"]
        registered = self.pages["pages"]
        self.assertEqual(
            [(item["id"], item["title"]) for item in registered],
            [(item["id"], item["title"]) for item in inventory_pages],
        )
        feature_ids = {item["id"] for item in self.features["features"]}
        self.assertTrue(all(page["feature"] in feature_ids for page in registered))
        self.assertEqual(sum(bool(page.get("default")) for page in registered), 1)

    def test_api_registry_is_current_and_owned(self) -> None:
        self.assertEqual(self.api, build_api_registry())
        feature_ids = {item["id"] for item in self.features["features"]}
        roles = set(self.features["roles"])
        keys = []
        for route in self.api["routes"]:
            keys.append((route["method"], route["path"], route["match"]))
            self.assertIn(route["feature"], feature_ids)
            self.assertIn(route["access"], roles)
        self.assertEqual(len(keys), len(set(keys)))

    def test_public_routes_are_explicitly_limited(self) -> None:
        public = {
            (item["method"], item["path"])
            for item in self.api["routes"]
            if item["access"] == "public"
        }
        self.assertEqual(
            public,
            {
                ("GET", "/api/health"),
                ("POST", "/api/auth/login"),
                ("POST", "/api/auth/register"),
            },
        )

    def test_calculation_datasets_use_approved_providers(self) -> None:
        providers = self.data["providers"]
        ids = []
        for dataset in self.data["datasets"]:
            ids.append(dataset["id"])
            self.assertIn(dataset["primary"], providers)
            for fallback in dataset.get("fallbacks", []):
                self.assertIn(fallback, providers)
            if dataset["usage"] == "calculation":
                self.assertTrue(providers[dataset["primary"]]["calculation_allowed"])
            if dataset["primary"] == "unresolved":
                self.assertEqual(dataset["usage"], "blocked")
        self.assertEqual(len(ids), len(set(ids)))

    def test_every_dataset_has_one_quality_rule_and_known_unit_profile(self) -> None:
        dataset_ids = {item["id"] for item in self.data["datasets"]}
        rules = self.quality["datasets"]
        self.assertEqual(set(rules), dataset_ids)
        profiles = set(self.quality["unit_profiles"])
        self.assertTrue(
            all(str(rule.get("unit_profile") or "none") in profiles for rule in rules.values())
        )


if __name__ == "__main__":
    unittest.main()