import os
import base64
import pytest

import app as app_module
from app import app as flask_app, init_db


@pytest.fixture
def app(tmp_path):
    db_path = str(tmp_path / "test.db")
    app_module.DATABASE = db_path
    flask_app.config["TESTING"] = True
    with flask_app.app_context():
        init_db()
    yield flask_app
    app_module.DATABASE = os.environ.get("DATABASE", "punktfri.db")


@pytest.fixture
def client(app):
    return app.test_client()


def test_health(client):
    r = client.get("/health")
    assert r.status_code == 200
    data = r.get_json()
    assert data["status"] == "ok"


def test_index_get(client):
    r = client.get("/")
    assert r.status_code == 200
    assert b"PunktFri" in r.data


def test_tak_get(client):
    r = client.get("/tak")
    assert r.status_code == 200
    assert b"tak" in r.data.lower()


def test_admin_unauthorized(client):
    r = client.get("/admin")
    assert r.status_code == 401


def test_admin_authorized(client):
    creds = base64.b64encode(b"admin:punktfri2024").decode()
    r = client.get("/admin", headers={"Authorization": f"Basic {creds}"})
    assert r.status_code == 200


def test_signup_missing_fields(client):
    r = client.post("/", data={})
    assert r.status_code == 200
    assert "felter" in r.data.decode("utf-8")


def test_signup_invalid_domains(client):
    r = client.post("/", data={
        "navn": "Test", "email": "test@test.dk",
        "domaener": "0", "egne_ns": "ja",
    })
    assert r.status_code == 200
    assert "gyldigt antal" in r.data.decode("utf-8")


def test_signup_success(client):
    r = client.post("/", data={
        "navn": "Test Bruger",
        "email": "test@test.dk",
        "domaener": "3",
        "egne_ns": "ja",
        "kommentar": "Test kommentar",
    }, follow_redirects=False)
    assert r.status_code == 302
    assert "/tak" in r.location


def test_signup_duplicate_email(client):
    data = {
        "navn": "Test Bruger",
        "email": "dup@test.dk",
        "domaener": "2",
        "egne_ns": "nej",
    }
    client.post("/", data=data)
    r = client.post("/", data=data)
    assert r.status_code == 200
    assert "allerede" in r.data.decode("utf-8")


def test_signup_sends_notification(client, monkeypatch):
    sent = []
    monkeypatch.setattr(app_module, "SMTP_HOST", "smtp.example")
    monkeypatch.setattr(app_module, "_send", sent.append)
    monkeypatch.setattr(app_module.threading, "Thread",
                        lambda target, args, daemon: type("T", (), {"start": lambda self: target(*args)})())
    client.post("/", data={
        "navn": "Notif Test", "email": "notif@test.dk",
        "domaener": "4", "egne_ns": "ja", "kommentar": "hej",
    })
    assert len(sent) == 1
    msg = sent[0]
    assert msg["To"] == "henrik@i80.dk"
    assert msg["Reply-To"] == "notif@test.dk"
    assert "Notif Test" in msg["Subject"]
    assert "hej" in msg.get_content()


def test_signup_without_smtp_skips_notification(client, monkeypatch):
    monkeypatch.setattr(app_module, "SMTP_HOST", "")
    monkeypatch.setattr(app_module, "_send", lambda m: pytest.fail("should not send"))
    r = client.post("/", data={
        "navn": "X", "email": "nosmtp@test.dk", "domaener": "1", "egne_ns": "nej",
    })
    assert r.status_code == 302