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# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*- 

# 

# Copyright (C) 2015 Canonical Ltd 

# 

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

# it under the terms of the GNU General Public License version 3 as 

# published by the Free Software Foundation. 

# 

# 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/>. 

 

"""The nodejs plugin is useful for node/npm based parts. 

 

The plugin uses node to install dependencies from `package.json`. It 

also sets up binaries defined in `package.json` into the `PATH`. 

 

This plugin uses the common plugin keywords as well as those for "sources". 

For more information check the 'plugins' topic for the former and the 

'sources' topic for the latter. 

 

Additionally, this plugin uses the following plugin-specific keywords: 

 

    - node-packages: 

      (list) 

      A list of dependencies to fetch using npm. 

""" 

 

import logging 

import os 

import platform 

 

import snapcraft 

from snapcraft import sources 

 

logger = logging.getLogger(__name__) 

 

_NODEJS_BASE = 'node-v{version}-linux-{arch}' 

_NODEJS_VERSION = '4.2.2' 

_NODEJS_TMPL = 'https://nodejs.org/dist/v{version}/{base}.tar.gz' 

_NODEJS_ARCHES = { 

    'x86_64': 'x64', 

    'armv7l': 'armv7l', 

} 

 

 

class NodePlugin(snapcraft.BasePlugin): 

 

    @classmethod 

    def schema(cls): 

        schema = super().schema() 

 

        schema['properties']['node-packages'] = { 

            'type': 'array', 

            'minitems': 1, 

            'uniqueItems': True, 

            'items': { 

                'type': 'string' 

            }, 

            'default': [], 

        } 

 

        if 'required' in schema: 

            del schema['required'] 

 

        return schema 

 

    def __init__(self, name, options): 

        super().__init__(name, options) 

        self._nodejs_tar = sources.Tar(_get_nodejs_release(), 

                                       os.path.join(self.partdir, 'npm')) 

 

    def pull(self): 

        super().pull() 

        os.makedirs(os.path.join(self.partdir, 'npm')) 

        self._nodejs_tar.pull() 

 

    def build(self): 

        super().build() 

        self._nodejs_tar.provision(self.installdir) 

        for pkg in self.options.node_packages: 

            self.run(['npm', 'install', '-g', pkg]) 

        if os.path.exists(os.path.join(self.builddir, 'package.json')): 

            self.run(['npm', 'install', '-g']) 

 

 

def _get_nodejs_base(): 

    machine = platform.machine() 

    if machine not in _NODEJS_ARCHES: 

        raise EnvironmentError('architecture not supported ({})'.format( 

            machine)) 

    return _NODEJS_BASE.format(version=_NODEJS_VERSION, 

                               arch=_NODEJS_ARCHES[machine]) 

 

 

def _get_nodejs_release(): 

    return _NODEJS_TMPL.format(version=_NODEJS_VERSION, 

                               base=_get_nodejs_base())