"""
Network services integration tests: DNS records, DHCP leases, DHCP reservations.

Note on endpoint shapes discovered from app.py:
  - DELETE /api/dns/records      takes a JSON body (not a URL param)
  - DELETE /api/dhcp/reservations takes JSON body with 'mac' field
  - POST /api/dhcp/reservations   requires 'mac' and 'ip' fields

Run with:  pytest tests/integration/test_network_services.py -v
"""
import pytest
import requests
import sys
import os
sys.path.insert(0, os.path.dirname(__file__))
from conftest import API_BASE

# Test DNS hostname to use — must be cleaned up after tests
_TEST_DNS_HOSTNAME = 'inttest-dns-record'


def get(path, **kw):
    return requests.get(f"{API_BASE}{path}", **kw)


def post(path, **kw):
    return requests.post(f"{API_BASE}{path}", **kw)


def delete(path, **kw):
    return requests.delete(f"{API_BASE}{path}", **kw)


# ---------------------------------------------------------------------------
# GET /api/dns/records
# ---------------------------------------------------------------------------

class TestDnsRecordsRead:
    def test_get_dns_records_returns_200(self):
        r = get('/api/dns/records')
        assert r.status_code == 200

    def test_get_dns_records_returns_list_or_dict(self):
        # The network_manager may return a list of records or a dict keyed by hostname
        data = get('/api/dns/records').json()
        assert isinstance(data, (list, dict))

    def test_get_dns_status_returns_200(self):
        r = get('/api/dns/status')
        assert r.status_code == 200

    def test_get_dns_status_returns_dict(self):
        data = get('/api/dns/status').json()
        assert isinstance(data, dict)


# ---------------------------------------------------------------------------
# POST /api/dns/records  +  DELETE /api/dns/records  (round-trip)
# ---------------------------------------------------------------------------

class TestDnsRecordsWrite:
    """Create a DNS A record then delete it.  The test is self-cleaning."""

    def test_add_dns_record_returns_non_error(self):
        """Adding a well-formed A record should not return a 4xx or 5xx."""
        r = post('/api/dns/records', json={
            'zone': 'cell',
            'name': _TEST_DNS_HOSTNAME,
            'record_type': 'A',
            'value': '10.0.0.99',
        })
        # Accept 200 or 201; clean up regardless
        try:
            assert r.status_code in (200, 201), (
                f"Expected 200/201 for DNS record creation, got {r.status_code}: {r.text}"
            )
        finally:
            delete('/api/dns/records', json={'zone': 'cell', 'name': _TEST_DNS_HOSTNAME, 'record_type': 'A'})

    def test_add_and_delete_dns_record_round_trip(self):
        """Create a record, verify it appears in the list, then delete it."""
        add_r = post('/api/dns/records', json={
            'zone': 'cell',
            'name': _TEST_DNS_HOSTNAME,
            'record_type': 'A',
            'value': '10.0.0.98',
        })
        assert add_r.status_code in (200, 201), (
            f"Could not create test DNS record: {add_r.text}"
        )
        try:
            records = get('/api/dns/records').json()
            if isinstance(records, list):
                names = [r.get('name', r.get('hostname', '')) for r in records]
            else:
                names = list(records.keys())
            assert any(_TEST_DNS_HOSTNAME in n for n in names), (
                f"Added record '{_TEST_DNS_HOSTNAME}' not found in records: {records}"
            )
        finally:
            del_r = delete('/api/dns/records', json={'zone': 'cell', 'name': _TEST_DNS_HOSTNAME, 'record_type': 'A'})
            assert del_r.status_code in (200, 204), (
                f"DNS record delete failed: {del_r.status_code} {del_r.text}"
            )

    def test_delete_nonexistent_dns_record_does_not_crash(self):
        """Deleting a record that doesn't exist should return 200/404, not 500."""
        r = delete('/api/dns/records', json={'zone': 'cell', 'name': 'does-not-exist-xyz', 'record_type': 'A'})
        assert r.status_code in (200, 404), (
            f"Unexpected status {r.status_code} deleting non-existent DNS record"
        )

    def test_add_dns_record_missing_name_is_handled(self):
        """Omitting required fields should not cause an unhandled 500."""
        r = post('/api/dns/records', json={'zone': 'cell', 'record_type': 'A', 'value': '10.0.0.97'})
        assert r.status_code != 200 or 'error' in r.json()


# ---------------------------------------------------------------------------
# GET /api/dhcp/leases
# ---------------------------------------------------------------------------

class TestDhcpLeases:
    def test_get_dhcp_leases_returns_200(self):
        r = get('/api/dhcp/leases')
        assert r.status_code == 200

    def test_get_dhcp_leases_returns_list_or_dict(self):
        data = get('/api/dhcp/leases').json()
        assert isinstance(data, (list, dict))


# ---------------------------------------------------------------------------
# POST /api/dhcp/reservations  +  DELETE /api/dhcp/reservations
# ---------------------------------------------------------------------------

_TEST_MAC = 'de:ad:be:ef:11:22'
_TEST_RESERVATION_IP = '10.0.0.200'


class TestDhcpReservations:
    def _cleanup(self):
        delete('/api/dhcp/reservations', json={'mac': _TEST_MAC})

    def test_add_dhcp_reservation_returns_non_error(self):
        try:
            r = post('/api/dhcp/reservations', json={
                'mac': _TEST_MAC,
                'ip': _TEST_RESERVATION_IP,
                'hostname': 'inttest-dhcp-host',
            })
            assert r.status_code in (200, 201), (
                f"Expected 200/201 for DHCP reservation, got {r.status_code}: {r.text}"
            )
        finally:
            self._cleanup()

    def test_add_dhcp_reservation_missing_mac_returns_400(self):
        r = post('/api/dhcp/reservations', json={'ip': _TEST_RESERVATION_IP})
        assert r.status_code == 400
        assert 'error' in r.json()

    def test_add_dhcp_reservation_missing_ip_returns_400(self):
        r = post('/api/dhcp/reservations', json={'mac': _TEST_MAC})
        assert r.status_code == 400
        assert 'error' in r.json()

    def test_add_dhcp_reservation_empty_body_returns_400(self):
        r = requests.post(
            f"{API_BASE}/api/dhcp/reservations",
            data='',
            headers={'Content-Type': 'application/json'},
        )
        assert r.status_code == 400

    def test_delete_dhcp_reservation_missing_mac_returns_400(self):
        r = delete('/api/dhcp/reservations', json={})
        assert r.status_code == 400
        assert 'error' in r.json()

    def test_add_and_delete_dhcp_reservation_round_trip(self):
        add_r = post('/api/dhcp/reservations', json={
            'mac': _TEST_MAC,
            'ip': _TEST_RESERVATION_IP,
        })
        assert add_r.status_code in (200, 201), (
            f"Could not create DHCP reservation: {add_r.text}"
        )
        try:
            del_r = delete('/api/dhcp/reservations', json={'mac': _TEST_MAC})
            assert del_r.status_code in (200, 204), (
                f"DHCP reservation delete failed: {del_r.status_code} {del_r.text}"
            )
        except Exception:
            self._cleanup()
            raise


# ---------------------------------------------------------------------------
# GET /api/ntp/status  +  GET /api/network/info
# ---------------------------------------------------------------------------

class TestNtpAndNetworkInfo:
    def test_ntp_status_returns_200(self):
        r = get('/api/ntp/status')
        assert r.status_code == 200

    def test_ntp_status_is_dict(self):
        assert isinstance(get('/api/ntp/status').json(), dict)

    def test_network_info_returns_200(self):
        r = get('/api/network/info')
        assert r.status_code == 200

    def test_network_info_is_dict(self):
        assert isinstance(get('/api/network/info').json(), dict)