import pytest
from django.test import Client
from core.models import AppUser, Library, Channel

@pytest.fixture
def client():
    return Client()

@pytest.fixture
def user(db):
    return AppUser.objects.create_user(username="apiuser2", email="api2@example.com", password="password")

@pytest.fixture
def library(db, user):
    return Library.objects.create(owner_user=user, name="Network Lib")

@pytest.fixture
def channel(db, user, library):
    return Channel.objects.create(
        owner_user=user,
        library=library,
        name="Test Channel",
        slug="test-ch",
        channel_number=1,
        scheduling_mode="template_driven"
    )

@pytest.mark.django_db
def test_list_channels(client, channel):
    response = client.get("/api/channel/")
    assert response.status_code == 200
    data = response.json()
    assert len(data) == 1
    assert data[0]["name"] == "Test Channel"
    assert data[0]["slug"] == "test-ch"

@pytest.mark.django_db
def test_get_channel(client, channel):
    response = client.get(f"/api/channel/{channel.id}")
    assert response.status_code == 200
    data = response.json()
    assert data["name"] == "Test Channel"

@pytest.mark.django_db
def test_get_channel_not_found(client):
    response = client.get("/api/channel/999")
    assert response.status_code == 404

@pytest.mark.django_db
def test_create_channel(client, user, library):
    payload = {
        "name": "New API Channel",
        "slug": "new-api-ch",
        "channel_number": 5,
        "description": "Created via API",
        "library_id": library.id,
        "owner_user_id": user.id
    }
    response = client.post("/api/channel/", data=payload, content_type="application/json")
    assert response.status_code == 201
    data = response.json()
    assert data["name"] == "New API Channel"
    assert data["slug"] == "new-api-ch"
    
    # Verify it hit the DB
    assert Channel.objects.count() == 1
    assert Channel.objects.get(id=data["id"]).name == "New API Channel"