"""
Functional tests — Health endpoints
======================================
Tests for:
  GET /      → HealthResponse schema
  GET /health → HealthResponse schema
"""
import pytest
import requests
from tests.conftest import BASE_URL, TIMEOUT


class TestRootEndpoint:
    """GET / — root health check."""

    def test_root_returns_200(self, http, base_url):
        r = http.get(f"{base_url}/", timeout=TIMEOUT)
        assert r.status_code == 200, f"Expected 200, got {r.status_code}: {r.text}"

    def test_root_content_type_is_json(self, http, base_url):
        r = http.get(f"{base_url}/", timeout=TIMEOUT)
        assert "application/json" in r.headers.get("Content-Type", "")

    def test_root_returns_healthy(self, root_response):
        data = root_response.json()
        assert data.get("status") == "healthy", f"Unexpected status: {data}"

    def test_root_response_has_version(self, root_response):
        data = root_response.json()
        assert "version" in data, "Response missing 'version' field"
        assert isinstance(data["version"], str)
        assert len(data["version"]) > 0

    def test_root_schema_contract(self, root_response):
        """Response must exactly match HealthResponse schema: {status, version}."""
        data = root_response.json()
        assert set(data.keys()) >= {"status", "version"}, (
            f"Missing required fields. Got: {set(data.keys())}"
        )


class TestHealthEndpoint:
    """GET /health — dedicated health check."""

    def test_health_returns_200(self, http, base_url):
        r = http.get(f"{base_url}/health", timeout=TIMEOUT)
        assert r.status_code == 200, f"Expected 200, got {r.status_code}: {r.text}"

    def test_health_content_type_is_json(self, http, base_url):
        r = http.get(f"{base_url}/health", timeout=TIMEOUT)
        assert "application/json" in r.headers.get("Content-Type", "")

    def test_health_returns_healthy_status(self, health_response):
        data = health_response.json()
        assert data.get("status") == "healthy", f"Unexpected status: {data}"

    def test_health_response_has_version(self, health_response):
        data = health_response.json()
        assert "version" in data
        assert isinstance(data["version"], str)

    def test_health_schema_contract(self, health_response):
        data = health_response.json()
        assert "status" in data
        assert "version" in data

    def test_health_and_root_agree(self, http, base_url):
        """Both endpoints must report the same status and version."""
        r_root   = http.get(f"{base_url}/",       timeout=TIMEOUT).json()
        r_health = http.get(f"{base_url}/health",  timeout=TIMEOUT).json()
        assert r_root["status"]  == r_health["status"]
        assert r_root["version"] == r_health["version"]