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

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import click

import kallithea.bin.kallithea_cli_base as cli_base

import os

import shutil

import subprocess

import json

import kallithea

@cli_base.register_command()

@click.option('--install-deps/--no-install-deps', default=True,

        help='Skip installation of dependencies, via "npm".')

@click.option('--generate/--no-generate', default=True,

        help='Skip generation of front-end files.')

def front_end_build(install_deps, generate):

    """Build the front-end.

    Install required dependencies for the front-end and generate the necessary

    files.  This step is complementary to any 'pip install' step which only

    covers Python dependencies.

    The installation of front-end dependencies happens via the tool 'npm' which

    is expected to be installed already.

    """

    front_end_dir = os.path.abspath(os.path.join(kallithea.__file__, '..', 'front-end'))

    public_dir = os.path.abspath(os.path.join(kallithea.__file__, '..', 'public'))

    if install_deps:

        click.echo("Running 'npm install' to install front-end dependencies from package.json")

    if generate:

        tmp_dir = os.path.join(front_end_dir, 'tmp')

        if not os.path.isdir(tmp_dir):

            os.mkdir(tmp_dir)

        click.echo("Building CSS styling based on Bootstrap")

        with open(os.path.join(tmp_dir, 'pygments.css'), 'w') as f:

            subprocess.check_call(['pygmentize',

                    '-S', 'default',

                    '-f', 'html',

                    '-a', '.code-highlight'],

                    stdout=f)

        lesscpath = os.path.join(front_end_dir, 'node_modules', '.bin', 'lessc')

        lesspath = os.path.join(front_end_dir, 'main.less')

        csspath = os.path.join(public_dir, 'css', 'style.css')

        subprocess.check_call([lesscpath, '--source-map',

                '--source-map-less-inline', lesspath, csspath],

        click.echo("Preparing Bootstrap JS")

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'bootstrap', 'dist', 'js', 'bootstrap.js'), os.path.join(public_dir, 'js', 'bootstrap.js'))

        click.echo("Preparing jQuery JS with Flot, Caret and Atwho")

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'jquery', 'dist', 'jquery.min.js'), os.path.join(public_dir, 'js', 'jquery.min.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'jquery.flot', 'jquery.flot.js'), os.path.join(public_dir, 'js', 'jquery.flot.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'jquery.flot', 'jquery.flot.selection.js'), os.path.join(public_dir, 'js', 'jquery.flot.selection.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'jquery.flot', 'jquery.flot.time.js'), os.path.join(public_dir, 'js', 'jquery.flot.time.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'jquery.caret', 'dist', 'jquery.caret.min.js'), os.path.join(public_dir, 'js', 'jquery.caret.min.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'at.js', 'dist', 'js', 'jquery.atwho.min.js'), os.path.join(public_dir, 'js', 'jquery.atwho.min.js'))

        click.echo("Preparing DataTables JS")

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'datatables.net', 'js', 'jquery.dataTables.js'), os.path.join(public_dir, 'js', 'jquery.dataTables.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'datatables.net-bs', 'js', 'dataTables.bootstrap.js'), os.path.join(public_dir, 'js', 'dataTables.bootstrap.js'))

        click.echo("Preparing Select2 JS")

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'select2', 'select2.js'), os.path.join(public_dir, 'js', 'select2.js'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'select2', 'select2.png'), os.path.join(public_dir, 'css', 'select2.png'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'select2', 'select2x2.png'), os.path.join(public_dir, 'css', 'select2x2.png'))

        shutil.copy(os.path.join(front_end_dir, 'node_modules', 'select2', 'select2-spinner.gif'), os.path.join(public_dir, 'css', 'select2-spinner.gif'))

        click.echo("Preparing CodeMirror JS")

        if os.path.isdir(os.path.join(public_dir, 'codemirror')):

            shutil.rmtree(os.path.join(public_dir, 'codemirror'))

        shutil.copytree(os.path.join(front_end_dir, 'node_modules', 'codemirror'), os.path.join(public_dir, 'codemirror'))

        click.echo("Generating LICENSES.txt")

        check_licensing_json_path = os.path.join(tmp_dir, 'licensing.json')

        licensing_txt_path = os.path.join(public_dir, 'LICENSES.txt')

        with open(check_licensing_json_path) as jsonfile:

            rows = json.loads(jsonfile.read())

            with open(licensing_txt_path, 'w') as out:

                out.write("The Kallithea front-end was built using the following Node modules:\n\n")

                for name_version, values in sorted(rows.items()):

                    name, version = name_version.rsplit('@', 1)

                    line = "%s from https://www.npmjs.com/package/%s/v/%s\n  License: %s\n  Repository: %s\n" % (

                        name_version, name, version, values['licenses'], values.get('repository', '-'))

                    if values.get('copyright'):

                        line += "  Copyright: %s\n" % (values['copyright'])

                    out.write(line + '\n')