# -*- coding: utf-8 -*-

from mock import MagicMock
import os

from codecs import open
from tempfile import mkdtemp
from shutil import rmtree

from pelican.generators import ArticlesGenerator, PagesGenerator, \
    TemplatePagesGenerator
from pelican.writers import Writer
from pelican.settings import _DEFAULT_CONFIG
from .support import unittest, get_settings

CUR_DIR = os.path.dirname(__file__)


class TestArticlesGenerator(unittest.TestCase):

    def setUp(self):
        super(TestArticlesGenerator, self).setUp()
        self.generator = None

    def get_populated_generator(self):
        """
        We only need to pull all the test articles once, but read from it
         for each test.
        """
        if self.generator is None:
            settings = get_settings()
            settings['ARTICLE_DIR'] = 'content'
            settings['DEFAULT_CATEGORY'] = 'Default'
            settings['DEFAULT_DATE'] = (1970, 01, 01)
            self.generator = ArticlesGenerator(settings.copy(), settings,
                                CUR_DIR, settings['THEME'], None,
                                settings['MARKUP'])
            self.generator.generate_context()
        return self.generator

    def distill_articles(self, articles):
        distilled = []
        for page in articles:
            distilled.append([
                    page.title,
                    page.status,
                    page.category.name,
                    page.template
                ]
           )
        return distilled

    def test_generate_feeds(self):
        settings = get_settings()
        generator = ArticlesGenerator(settings,
                {'FEED_ALL_ATOM': settings['FEED_ALL_ATOM']}, None,
                settings['THEME'], None, settings['MARKUP'])
        writer = MagicMock()
        generator.generate_feeds(writer)
        writer.write_feed.assert_called_with([], settings, 'feeds/all.atom.xml')

        generator = ArticlesGenerator(settings, {'FEED_ALL_ATOM': None}, None,
                                      settings['THEME'], None, None)
        writer = MagicMock()
        generator.generate_feeds(writer)
        self.assertFalse(writer.write_feed.called)

    def test_generate_context(self):

        generator = self.get_populated_generator()
        articles = self.distill_articles(generator.articles)
        articles_expected = [
            [u'Article title', 'published', 'Default', 'article'],
            [u'Article with template', 'published', 'Default', 'custom'],
            [u'Test md File', 'published', 'test', 'article'],
            [u'Rst with filename metadata', 'published', u'yeah', 'article'],
            [u'Test Markdown extensions', 'published', u'Default', 'article'],
            [u'This is a super article !', 'published', 'Yeah', 'article'],
            [u'This is an article with category !', 'published', 'yeah', 'article'],
            [u'This is an article without category !', 'published', 'Default', 'article'],
            [u'This is an article without category !', 'published', 'TestCategory', 'article'],
            [u'This is a super article !', 'published', 'yeah', 'article']
        ]
        self.assertItemsEqual(articles_expected, articles)

    def test_generate_categories(self):

        generator = self.get_populated_generator()
        categories = [cat.name for cat, _ in generator.categories]
        categories_expected = ['Default', 'TestCategory', 'Yeah', 'test', 'yeah']
        self.assertEquals(categories, categories_expected)

    def test_do_not_use_folder_as_category(self):

        settings = _DEFAULT_CONFIG.copy()
        settings['ARTICLE_DIR'] = 'content'
        settings['DEFAULT_CATEGORY'] = 'Default'
        settings['DEFAULT_DATE'] = (1970, 01, 01)
        settings['USE_FOLDER_AS_CATEGORY'] = False
        settings['filenames'] = {}
        generator = ArticlesGenerator(settings.copy(), settings,
                            CUR_DIR, _DEFAULT_CONFIG['THEME'], None,
                            _DEFAULT_CONFIG['MARKUP'])
        generator.generate_context()

        categories = [cat.name for cat, _ in generator.categories]
        self.assertEquals(categories, ['Default', 'Yeah', 'test', 'yeah'])

    def test_direct_templates_save_as_default(self):

        settings = get_settings()
        generator = ArticlesGenerator(settings, settings, None,
                                      settings['THEME'], None,
                                      settings['MARKUP'])
        write = MagicMock()
        generator.generate_direct_templates(write)
        write.assert_called_with("archives.html",
            generator.get_template("archives"), settings,
            blog=True, paginated={}, page_name='archives')

    def test_direct_templates_save_as_modified(self):

        settings = get_settings()
        settings['DIRECT_TEMPLATES'] = ['archives']
        settings['ARCHIVES_SAVE_AS'] = 'archives/index.html'
        generator = ArticlesGenerator(settings, settings, None,
                                      settings['THEME'], None,
                                      settings['MARKUP'])
        write = MagicMock()
        generator.generate_direct_templates(write)
        write.assert_called_with("archives/index.html",
            generator.get_template("archives"), settings,
            blog=True, paginated={}, page_name='archives')

    def test_direct_templates_save_as_false(self):

        settings = get_settings()
        settings['DIRECT_TEMPLATES'] = ['archives']
        settings['ARCHIVES_SAVE_AS'] = 'archives/index.html'
        generator = ArticlesGenerator(settings, settings, None,
                                      settings['THEME'], None,
                                      settings['MARKUP'])
        write = MagicMock()
        generator.generate_direct_templates(write)
        write.assert_called_count == 0

    def test_per_article_template(self):
        """
        Custom template articles get the field but standard/unset are None
        """
        generator = self.get_populated_generator()
        articles = self.distill_articles(generator.articles)
        custom_template = ['Article with template', 'published', 'Default', 'custom']
        standard_template = ['This is a super article !', 'published', 'Yeah', 'article']
        self.assertIn(custom_template, articles)
        self.assertIn(standard_template, articles)

class TestPageGenerator(unittest.TestCase):
    """
    Every time you want to test for a new field;
    Make sure the test pages in "TestPages" have all the fields
    Add it to distilled in distill_pages
    Then update the assertItemsEqual in test_generate_context to match expected
    """

    def distill_pages(self, pages):
        distilled = []
        for page in pages:
           distilled.append([
                    page.title,
                    page.status,
                    page.template
                ]
           )
        return distilled

    def test_generate_context(self):
        settings = get_settings()
        settings['PAGE_DIR'] = 'TestPages'
        settings['DEFAULT_DATE'] = (1970, 01, 01)

        generator = PagesGenerator(settings.copy(), settings, CUR_DIR,
                                      settings['THEME'], None,
                                      settings['MARKUP'])
        generator.generate_context()
        pages = self.distill_pages(generator.pages)
        hidden_pages = self.distill_pages(generator.hidden_pages)

        pages_expected = [
            [u'This is a test page', 'published', 'page'],
            [u'This is a markdown test page', 'published', 'page'],
            [u'This is a test page with a preset template', 'published', 'custom']
        ]
        hidden_pages_expected = [
            [u'This is a test hidden page', 'hidden', 'page'],
            [u'This is a markdown test hidden page', 'hidden', 'page'],
            [u'This is a test hidden page with a custom template', 'hidden', 'custom']
        ]

        self.assertItemsEqual(pages_expected,pages)
        self.assertItemsEqual(hidden_pages_expected,hidden_pages)


class TestTemplatePagesGenerator(unittest.TestCase):

    TEMPLATE_CONTENT = "foo: {{ foo }}"

    def setUp(self):
        self.temp_content = mkdtemp()
        self.temp_output = mkdtemp()

    def tearDown(self):
        rmtree(self.temp_content)
        rmtree(self.temp_output)

    def test_generate_output(self):

        settings = get_settings()
        settings['STATIC_PATHS'] = ['static']
        settings['TEMPLATE_PAGES'] = {
                'template/source.html': 'generated/file.html'
                }

        generator = TemplatePagesGenerator({'foo': 'bar'}, settings,
                self.temp_content, '', self.temp_output, None)

        # create a dummy template file
        template_dir = os.path.join(self.temp_content, 'template')
        template_filename = os.path.join(template_dir, 'source.html')
        os.makedirs(template_dir)
        with open(template_filename, 'w') as template_file:
            template_file.write(self.TEMPLATE_CONTENT)

        writer = Writer(self.temp_output, settings=settings)
        generator.generate_output(writer)

        output_filename = os.path.join(
                self.temp_output, 'generated', 'file.html')

        # output file has been generated
        self.assertTrue(os.path.exists(output_filename))

        # output content is correct
        with open(output_filename, 'r') as output_file:
            self.assertEquals(output_file.read(), 'foo: bar')
