"""
Contains tests for the nbconvertapp
"""
#-----------------------------------------------------------------------------
#Copyright (c) 2013, the IPython Development Team.
#
#Distributed under the terms of the Modified BSD License.
#
#The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------

import os
from .base import TestsBase

from IPython.utils import py3compat
from IPython.testing import decorators as dec

    
#-----------------------------------------------------------------------------
# Constants
#-----------------------------------------------------------------------------

# Define ipython commandline name
if py3compat.PY3:
    IPYTHON = 'ipython3'
else:
    IPYTHON = 'ipython'


#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------

class TestNbConvertApp(TestsBase):
    """Collection of NbConvertApp tests"""


    def test_notebook_help(self):
        """
        Will help show if no notebooks are specified?
        """
        with self.create_temp_cwd():
            out, err = self.call(IPYTHON + ' nbconvert', raise_on_error=False)
            assert "see '--help-all'" in out


    def test_glob(self):
        """
        Do search patterns work for notebook names?
        """
        with self.create_temp_cwd(['notebook*.ipynb']):
            self.call(IPYTHON + ' nbconvert --to="python"'
                       ' --notebooks=*.ipynb')
            assert os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')


    def test_glob_subdir(self):
        """
        Do search patterns work for subdirectory notebook names?
        """
        with self.create_temp_cwd():
            self.copy_files_to(['notebook*.ipynb'], 'subdir/')
            self.call(IPYTHON + ' nbconvert --to="python"'
                      ' --notebooks=%s' % os.path.join('subdir', '*.ipynb'))
            assert os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')


    def test_explicit(self):
        """
        Do explicit notebook names work?
        """
        with self.create_temp_cwd(['notebook*.ipynb']):
            self.call(IPYTHON + ' nbconvert --to="python"'
                      ' --notebooks=notebook2.ipynb')
            assert not os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')


    @dec.onlyif_cmds_exist('pdflatex')
    @dec.onlyif_cmds_exist('pandoc')
    def test_post_processor(self):
        """
        Do post processors work?
        """
        with self.create_temp_cwd(['notebook1.ipynb']):
            self.call(IPYTHON + ' nbconvert --to="latex" notebook1'
                       ' --post="PDF" --PDFPostProcessor.verbose=True')
            assert os.path.isfile('notebook1.tex')
            print("\n\n\t" + "\n\t".join([f for f in os.listdir('.') if os.path.isfile(f)]) + "\n\n")
            assert os.path.isfile('notebook1.pdf')


    @dec.onlyif_cmds_exist('pandoc')
    def test_template(self):
        """
        Do export templates work?
        """
        with self.create_temp_cwd(['notebook2.ipynb']):
            self.call(IPYTHON + ' nbconvert --to=slides'
                       ' --notebooks=notebook2.ipynb'
                       ' --template=reveal')
            assert os.path.isfile('notebook2.slides.html')
            with open('notebook2.slides.html') as f:
                assert '/reveal.css' in f.read()


    def test_glob_explicit(self):
        """
        Can a search pattern be used along with matching explicit notebook names?
        """
        with self.create_temp_cwd(['notebook*.ipynb']):
            self.call(IPYTHON + ' nbconvert --to="python" --notebooks='
                      '*.ipynb,notebook1.ipynb,notebook2.ipynb')
            assert os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')


    def test_explicit_glob(self):
        """
        Can explicit notebook names be used and then a matching search pattern?
        """
        with self.create_temp_cwd(['notebook*.ipynb']):
            self.call(IPYTHON + ' nbconvert --to="python" --notebooks='
                      'notebook1.ipynb,notebook2.ipynb,*.ipynb')
            assert os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')


    def test_default_config(self):
        """
        Does the default config work?
        """
        with self.create_temp_cwd(['notebook*.ipynb', 'ipython_nbconvert_config.py']):
            self.call(IPYTHON + ' nbconvert')
            assert os.path.isfile('notebook1.py')
            assert not os.path.isfile('notebook2.py')


    def test_override_config(self):
        """
        Can the default config be overriden?
        """
        with self.create_temp_cwd(['notebook*.ipynb',
                                   'ipython_nbconvert_config.py',
                                   'override.py']):
            self.call(IPYTHON + ' nbconvert --config="override.py"')
            assert not os.path.isfile('notebook1.py')
            assert os.path.isfile('notebook2.py')