import unittest

from spaceapi_server.template import _env_init, render, render_traverse
from spaceapi_server.plugins import template_function, template_filter, template_test


class TemplateTest(unittest.TestCase):

    @staticmethod
    @template_function
    def template_test_function(value):
        return f'test_{value}'

    @staticmethod
    @template_filter
    def template_test_filter(value, other):
        return f'test_{other}_{value}'

    @staticmethod
    @template_test
    def template_test_test(value):
        return value == 'baz'

    def test_template(self):
        env = _env_init()
        self.assertEqual('"not a template"', env.from_string('not a template').render())
        self.assertEqual('"a template"', env.from_string('{{ "a template" }}').render())
        self.assertEqual('42', env.from_string('{{ 42 }}').render())
        self.assertEqual('["foo"]', env.from_string('{{ [ "foo" ] }}').render())
        self.assertEqual('{"foo": ["bar"]}', env.from_string('{{ { "foo": [ "bar" ] } }}').render())

    def test_render(self):
        self.assertEqual('not a template', render('not a template'))
        self.assertEqual('a template', render('{{ "a template" }}'))
        self.assertEqual(42, render('{{ 42 }}'))
        self.assertEqual(['foo'], render('{{ [ "foo" ] }}'))
        self.assertEqual({'foo': ['bar']}, render('{{ { "foo": [ "bar" ] } }}'))
        self.assertEqual('foo', render('foo{{ "bar" }}'))

    def test_render_traverse(self):
        template = {
            'foo': 42,
            'bar': [1, 2, 3],
            'notemplate': 'foo',
            'builtin': '{{ [ 1337, 42 ] | first }}',
            'test_functions': {
                'test_function': '{{ template_test_function("foo") }}',
                'test_filter': '{{ "bar" | template_test_filter("other") }}',
                'test_test_true': '{{ "baz" is template_test_test }}',
                'test_test_false': '{{ "foo" is template_test_test }}'
            }
        }
        rendered = render_traverse(template)
        self.assertEqual(42, rendered['foo'])
        self.assertEqual([1, 2, 3], rendered['bar'])
        self.assertEqual('foo', rendered['notemplate'])
        self.assertEqual(1337, rendered['builtin'])
        self.assertEqual('test_foo', rendered['test_functions']['test_function'])
        self.assertEqual('test_other_bar', rendered['test_functions']['test_filter'])
        self.assertTrue(rendered['test_functions']['test_test_true'])
        self.assertFalse(rendered['test_functions']['test_test_false'])