import datetime
import os
import sys

import pytest
from fastapi.testclient import TestClient

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

import api_server
import cidr_collector as cc
import db
from storage import StorageError, load_json

NOW = datetime.datetime.now()


@pytest.fixture
def files(tmp_path, monkeypatch):
    monkeypatch.setattr(cc, "CONFIG_FILE", str(tmp_path / "config.json"))
    monkeypatch.setattr(cc, "DATA_FILE", str(tmp_path / "data.json"))
    monkeypatch.setattr(cc, "FQDN_DATA_FILE", str(tmp_path / "fqdn_data.json"))
    monkeypatch.setattr(cc, "DB_FILE", str(tmp_path / "ripe.db"))
    return tmp_path


def stored(kind="asn"):
    with db.session() as conn:
        return sorted(db.get_values(conn, kind))


def test_ttl_merge_and_failure_safety(files, monkeypatch):
    (files / "config.json").write_text('{"asns": [1], "ttl_days": 90}')
    collector = cc.CIDRCollector()
    old = (NOW - datetime.timedelta(days=100)).isoformat(timespec="seconds")
    with db.session() as conn:
        conn.execute("INSERT INTO addresses VALUES ('asn', '1', '9.9.9.0/24', ?, ?)", (old, old))

    # Ошибка источника: ничего не удаляется, даже просроченное
    monkeypatch.setattr(collector, "fetch_prefixes", lambda asn: None)
    collector.run_collection()
    assert stored() == ["9.9.9.0/24"]

    # Успешный ответ: просроченный удаляется, новый добавляется
    monkeypatch.setattr(collector, "fetch_prefixes", lambda asn: ["1.1.1.0/24"])
    collector.run_collection()
    assert stored() == ["1.1.1.0/24"]


def test_corrupted_storage_is_preserved(files):
    # Битый JSON (конфигурация)
    path = files / "data.json"
    path.write_text("{broken")
    with pytest.raises(StorageError):
        load_json(str(path), {})
    assert not path.exists()
    assert len(list(files.glob("data.json.corrupt-*"))) == 1

    # Битая база без копий: оригинал убран в сторону, создана новая пустая база и поставлена метка пересоздания
    (files / "ripe.db").write_bytes(b"this is not a sqlite database" * 100)
    with db.session() as conn:
        assert db.get_values(conn) == []
    assert len(list(files.glob("ripe.db.corrupt-*"))) == 1
    assert (files / "db_recreated.json").exists()


def test_post_schedule_auth(files, monkeypatch):
    (files / "config.json").write_text('{"asns": [], "fqdns": []}')
    client = TestClient(api_server.app)
    body = {"type": "asn", "cron": "*/5 * * * *"}

    monkeypatch.delenv("RIPE_API_TOKEN", raising=False)
    assert client.post("/schedule", json=body).status_code == 503

    monkeypatch.setenv("RIPE_API_TOKEN", "secret")
    assert client.post("/schedule", json=body).status_code == 401
    assert client.post("/schedule", json=body, headers={"X-API-Key": "wrong"}).status_code == 401
    assert client.post("/schedule", json=body, headers={"X-API-Key": "secret"}).status_code == 200
    assert load_json(cc.CONFIG_FILE, {})["schedule"]["asn"] == "*/5 * * * *"
    assert client.get("/addresses").status_code == 200


def test_fqdn_keeps_only_global_addresses(files, monkeypatch):
    answers = [(2, 1, 6, "", (address, 0)) for address in
               ("93.184.216.34", "127.0.0.1", "10.0.0.5", "0.0.0.0", "fe80::1%eth0", "2606:2800:220:1::1")]
    monkeypatch.setattr(cc.socket, "getaddrinfo", lambda *args, **kwargs: answers)

    (files / "config.json").write_text('{"fqdns": ["x.example"]}')
    assert sorted(cc.FQDNCollector().resolve_fqdn("x.example")) == ["2606:2800:220:1::1", "93.184.216.34"]

    # Внутренние имена: фильтр отключается, зона IPv6 отбрасывается
    (files / "config.json").write_text('{"fqdns": ["x.example"], "allow_non_global_ips": true}')
    everything = cc.FQDNCollector().resolve_fqdn("x.example")
    assert {"127.0.0.1", "10.0.0.5", "fe80::1"} <= set(everything) and len(everything) == 6

    # Глобальных адресов нет - результат пуст, как при ошибке DNS (сбор ничего не удаляет)
    monkeypatch.setattr(cc.socket, "getaddrinfo", lambda *args, **kwargs: [answers[1]])
    (files / "config.json").write_text('{"fqdns": ["x.example"]}')
    assert cc.FQDNCollector().resolve_fqdn("x.example") == []