import json
import pytest

from django.urls import reverse

from funkwhale_api.music.serializers import TrackSerializerNested
from funkwhale_api.radios import filters
from funkwhale_api.radios import serializers


def test_can_list_config_options(logged_in_client):
    url = reverse('api:v1:radios:radios-filters')
    response = logged_in_client.get(url)

    assert response.status_code == 200

    payload = json.loads(response.content.decode('utf-8'))

    expected = [f for f in filters.registry.values() if f.expose_in_api]
    assert len(payload) == len(expected)


def test_can_validate_config(logged_in_client, factories):
    artist1 = factories['music.Artist']()
    artist2 = factories['music.Artist']()
    factories['music.Track'].create_batch(3, artist=artist1)
    factories['music.Track'].create_batch(3, artist=artist2)
    candidates = artist1.tracks.order_by('pk')
    f = {
        'filters': [
            {'type': 'artist', 'ids': [artist1.pk]}
        ]
    }
    url = reverse('api:v1:radios:radios-validate')
    response = logged_in_client.post(
        url,
        json.dumps(f),
        content_type="application/json")

    assert response.status_code == 200

    payload = json.loads(response.content.decode('utf-8'))

    expected = {
        'count': candidates.count(),
        'sample': TrackSerializerNested(candidates, many=True).data
    }
    assert payload['filters'][0]['candidates'] == expected
    assert payload['filters'][0]['errors'] == []


def test_can_validate_config_with_wrong_config(logged_in_client, factories):
    f = {
        'filters': [
            {'type': 'artist', 'ids': [999]}
        ]
    }
    url = reverse('api:v1:radios:radios-validate')
    response = logged_in_client.post(
        url,
        json.dumps(f),
        content_type="application/json")

    assert response.status_code == 200

    payload = json.loads(response.content.decode('utf-8'))

    expected = {
        'count': None,
        'sample': None
    }
    assert payload['filters'][0]['candidates'] == expected
    assert len(payload['filters'][0]['errors']) == 1


def test_saving_radio_sets_user(logged_in_client, factories):
    artist = factories['music.Artist']()
    f = {
        'name': 'Test',
        'config': [
            {'type': 'artist', 'ids': [artist.pk]}
        ]
    }
    url = reverse('api:v1:radios:radios-list')
    response = logged_in_client.post(
        url,
        json.dumps(f),
        content_type="application/json")

    assert response.status_code == 201

    radio = logged_in_client.user.radios.latest('id')
    assert radio.name == 'Test'
    assert radio.user == logged_in_client.user


def test_user_can_detail_his_radio(logged_in_client, factories):
    radio = factories['radios.Radio'](user=logged_in_client.user)
    url = reverse('api:v1:radios:radios-detail', kwargs={'pk': radio.pk})
    response = logged_in_client.get(url)

    assert response.status_code == 200


def test_user_can_detail_public_radio(logged_in_client, factories):
    radio = factories['radios.Radio'](is_public=True)
    url = reverse('api:v1:radios:radios-detail', kwargs={'pk': radio.pk})
    response = logged_in_client.get(url)

    assert response.status_code == 200


def test_user_cannot_detail_someone_else_radio(logged_in_client, factories):
    radio = factories['radios.Radio'](is_public=False)
    url = reverse('api:v1:radios:radios-detail', kwargs={'pk': radio.pk})
    response = logged_in_client.get(url)

    assert response.status_code == 404


def test_user_can_edit_his_radio(logged_in_client, factories):
    radio = factories['radios.Radio'](user=logged_in_client.user)
    url = reverse('api:v1:radios:radios-detail', kwargs={'pk': radio.pk})
    response = logged_in_client.put(
        url,
        json.dumps({'name': 'new', 'config': []}),
        content_type="application/json")

    radio.refresh_from_db()
    assert response.status_code == 200
    assert radio.name == 'new'


def test_user_cannot_edit_someone_else_radio(logged_in_client, factories):
    radio = factories['radios.Radio']()
    url = reverse('api:v1:radios:radios-detail', kwargs={'pk': radio.pk})
    response = logged_in_client.put(
        url,
        json.dumps({'name': 'new', 'config': []}),
        content_type="application/json")

    assert response.status_code == 404


def test_clean_config_is_called_on_serializer_save(mocker, factories):
    user = factories['users.User']()
    artist = factories['music.Artist']()
    data= {
        'name': 'Test',
        'config': [
            {'type': 'artist', 'ids': [artist.pk]}
        ]
    }
    spied = mocker.spy(filters.registry['artist'], 'clean_config')
    serializer = serializers.RadioSerializer(data=data)
    assert serializer.is_valid()
    instance = serializer.save(user=user)
    spied.assert_called_once_with(data['config'][0])
    assert instance.config[0]['names'] == [artist.name]