Issue #6942 - Add XTM integration in CMS

cms/translations/xtm/xtm_api.py

Index: cms/translations/xtm/xtm_api.py
diff --git a/cms/translations/xtm/xtm_api.py b/cms/translations/xtm/xtm_api.py
new file mode 100644
index 0000000000000000000000000000000000000000..cd6a20ce05866c6f3997e872d6bbf192c009a027
--- /dev/null
+++ b/cms/translations/xtm/xtm_api.py
@@ -0,0 +1,432 @@
+# This file is part of the Adblock Plus web scripts,
+# Copyright (C) 2006-present eyeo GmbH
+#
+# Adblock Plus 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.
+#
+# Adblock Plus 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 Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+
+from __future__ import unicode_literals
+
+import json
+
+import requests
+
+__all__ = [
+    'XTMCloudAPI', 'XTMCloudException', 'get_token',
+]
+
+_BASE_URL = 'https://wstest2.xtm-intl.com/rest-api/'
+
+
+class XTMCloudException(Exception):
+    _BASE_MESSAGE = ('Error: XTM Cloud API failed while {0}, with error '
+                     'code {1}: {2}')
+
+    def __init__(self, code, msg, action):
+        """Constructor.
+
+        Parameters
+        ----------
+        code: int
+            The error code returned by the API.
+        msg: str
+            The error message returned by the API.
+        action: str
+            The action that caused the exception.
+
+        """
+        full_message = self._BASE_MESSAGE.format(action, code, msg)
+        super(XTMCloudException, self).__init__(full_message)
+
+        self.code = code
+        self.message = msg
+        self.action = action
+
+
+class XTMCloudAPI(object):
+
+    _AUTHORIZATION_TMP = 'XTM-Basic {0}'
+
+    class _UrlPaths:
+        CREATE = 'projects'
+        DOWNLOAD = 'projects/{0}/files/download'
+        UPLOAD = 'projects/{0}/files/upload'
+        GET_TARGET_LANG = 'projects/{0}/metrics'
+        ADD_TARGET_LANG = 'projects/{0}/target-languages'
+
+    _MATCH_TYPE = {
+        False: 'NO_MATCH',
+        True: 'MATCH_NAMES',
+    }
+
+    class _SuccessCodes:
+        CREATE = 201
+        UPLOAD = 200
+        DOWNLOAD = 200
+        GET_TARGET_LANGS = 200
+        ADD_TARGET_LANGS = 200
+
+    def __init__(self, token):
+        """Constructor.
+
+        Parameters
+        ----------
+        token: str
+            Token used to authenticate with the API.
+
+        """
+        self._token = token
+        self.base_url = _BASE_URL
+
+    def _execute(self, url, data=None, files=None, stream=False,
+                 params=None, headers=None):
+        """Send request to the API and return the response.
+
+        Parameters
+        ----------
+        url: str
+            The url we're making the request to.
+        data: dict
+            The data to be sent to the API. If provided, the request will be
+            a POST request, otherwise GET. Default None.
+        files: dict
+            The files to be uploaded(if any). Default None.
+        params: dict
+            The URL parameters to be specified.
+        stream: bool
+            Whether using the stream option when executing the request or not.
+        headers: dict
+            Default headers to be sent with the request.
+
+        Returns
+        -------
+        The contents of the API response.
+
+        """
+        auth_header = {
+            'Authorization': self._AUTHORIZATION_TMP.format(self._token),
+        }
+
+        if headers:
+            headers.update(auth_header)
+        else:
+            headers = auth_header
+
+        if data:
+            response = requests.post(url, data=data, files=files,
+                                     headers=headers, params=params,
+                                     stream=stream)
+        else:
+            response = requests.get(url, headers=headers, stream=True,
+                                    params=params)
+
+        return response
+
+    def _construct_files_dict(self, files, param_tmp):
+        """Convert a list of files to an uploadable format.
+
+        Parameters
+        ----------
+        files: iterable
+            Of the files to be uploaded. See create_project() for expected
+            format.
+
+        Returns
+        -------
+        dict
+            With the names of the files to be uploaded.
+        dict
+            With the files in the correct format for upload.
+
+        """
+        files_data = {}
+        file_names = {}
+        idx = 0
+
+        for name in files:
+            file_names[(param_tmp + '.name').format(idx)] = name
+            files_data[(param_tmp + '.file').format(idx)] = files[name]
+            idx += 1
+
+        return file_names, files_data
+
+    def create_project(self, name, description, reference_id, target_languages,
+                       customer_id, workflow_id, source_language='en_US',
+                       files=None):
+        """Create a new project with XTM Cloud.
+
+        Parameters
+        ----------
+        name: str
+            The name of the project we want to create.
+        description: str
+            The description of the project.
+        reference_id: str
+            The referenceID of the project.
+        target_languages: iterable
+            The target language(s) for the project.
+        customer_id: int
+            The id of the customer creating the project
+        workflow_id: int
+            The id of the main workflow
+        source_language: str
+            The source language for the project.
+        files: dict
+            With the files to be uploaded on creation.
+            Expects this format:
+                <file_name>: <file_data>
+
+        Returns
+        -------
+        int
+            The id of the created project.
+        iterable
+            Containing the information for all the jobs that were initiated.
+            See docs for upload_files() for the fully documented format.
+
+        Raises
+        ------
+        XTMCloudException
+            If the creation of the project was not successful.
+
+        """
+        data = {
+            'name': name,
+            'description': description,
+            'referenceId': reference_id,
+            'customerId': customer_id,
+            'workflowId': workflow_id,
+            'sourceLanguage': source_language,
+            'targetLanguages': target_languages,
+        }
+
+        if files:
+            file_names, files_to_upload = self._construct_files_dict(
+                files, 'translationFiles[{}]')
+            data.update(file_names)
+        else:
+            # Hacky way to go around 415 error code
+            files_to_upload = {'a': 'b'}
+
+        url = self.base_url + self._UrlPaths.CREATE
+
+        response = self._execute(url, data=data, files=files_to_upload)
+
+        if response.status_code != self._SuccessCodes.CREATE:
+            # The creation was not successful
+            raise XTMCloudException(response.status_code,
+                                    response.text.decode('utf-8'),
+                                    'creating job')
+
+        data = json.loads(response.text.encode('utf-8'))
+
+        return data['projectId'], data['jobs']
+
+    def upload_files(self, files, project_id, overwrite=True):
+        """Upload a set of files to a project.
+
+        Parameters
+        ----------
+        files: dict
+            With the files to be uploaded on creation.
+            Expects this format:
+                <file_name>: <file_data>
+        project_id: int
+            The id of the project we're uploading to.
+        overwrite: bool
+            Whether the files to be uploaded are going to overwrite the files
+            that are already in the XTM project or not. Default False.
+
+        Returns
+        -------
+        iterable
+            With the upload results. Each element will have the form:
+
+                {
+                    'fileName': <the name of the uploaded file>,
+                    'jobId': <ID of the job associated with the file>,
+                    'sourceLanguage': <source language of the uploaded file>,
+                    'targetLanguage': <target language of the uploaded file>,
+                }
+
+        Raises
+        ------
+        XTMCloudException
+            If the API operation fails.
+
+        """
+        file_names, files_to_upload = self._construct_files_dict(
+            files, 'files[{}]',
+        )
+
+        if len(files_to_upload.keys()) == 0:
+            raise Exception('Error: No files provided for upload.')
+
+        data = {'matchType': self._MATCH_TYPE[overwrite]}
+        data.update(file_names)
+
+        url = self.base_url + self._UrlPaths.UPLOAD.format(project_id)
+
+        response = self._execute(url, data=data, files=files_to_upload)
+
+        if response.status_code != self._SuccessCodes.UPLOAD:
+            raise XTMCloudException(response.status_code,
+                                    response.text.encode('utf-8'),
+                                    'uploading files')
+
+        return json.loads(response.text.encode('utf-8'))['jobs']
+
+    def download_files(self, project_id, files_type='TARGET'):
+        """Download files for a specific project.
+
+        Parameters
+        ----------
+        project_id: int
+            The id of the project to download from.
+        files_type: str
+            The type of the files we want to download. Default TARGET
+
+        Returns
+        -------
+        bytes
+            The contents of the zip file returned by the API
+
+        Raises
+        ------
+        XTMCloudException
+            If the request is flawed in any way.
+
+        """
+        url = (self.base_url + self._UrlPaths.DOWNLOAD).format(project_id)
+
+        exception_msg = {
+            400: 'Invalid request',
+            401: 'Authentication failed',
+            500: 'Internal server error',
+            404: 'Project not found.',
+        }
+
+        response = self._execute(url, params={'fileType': files_type},
+                                 stream=True)
+
+        if response.status_code != self._SuccessCodes.DOWNLOAD:
+            raise XTMCloudException(
+                response.status_code,
+                exception_msg[response.status_code],
+                'downloading files from {}'.format(project_id),
+            )
+
+        return response.content
+
+    def get_target_languages(self, project_id):
+        """Get all the target languages for a specific project.
+
+        Parameters
+        ----------
+        project_id: int
+            The id if the project in question.
+
+        Returns
+        -------
+        iterable
+            With the target languages for this project.
+
+        Raises
+        ------
+        XTMCloudException
+            If the request is unsuccessful.
+
+        """
+        url = (self.base_url + self._UrlPaths.GET_TARGET_LANG).format(
+            project_id,
+        )
+
+        response = self._execute(url, stream=True)
+
+        if response.status_code != self._SuccessCodes.GET_TARGET_LANGS:
+            raise XTMCloudException(response.status_code, response.content,
+                                    'extracting target languages')
+
+        data = json.loads(response.content.encode('utf-8'))
+        return {item['targetLanguage'] for item in data}
+
+    def add_target_languages(self, project_id, target_languages):
+        """Add target languages to a project.
+
+        Parameters
+        ----------
+        project_id: int
+            The id of the project in question.
+        target_languages: iterable
+            The languages to be added.
+
+        Raises
+        -------
+        XTMCloudException
+            If the request to the API was not successful.
+
+        """
+        data = json.dumps({
+            'targetLanguages': target_languages,
+        })
+        url = (self.base_url + self._UrlPaths.ADD_TARGET_LANG).format(
+            project_id,
+        )
+        headers = {'content-type': 'application/json'}
+
+        response = self._execute(url, data=data, headers=headers)
+
+        if response.status_code != self._SuccessCodes.ADD_TARGET_LANGS:
+            raise XTMCloudException(response.status_code, response.content,
+                                    'adding target languages to project')
+
+
+def get_token(username, password, user_id):
+    """Generate an API token from username and password.
+
+    Parameters
+    ----------
+    username: str
+        The username used to generate the token.
+    password: str
+        The password used to generate the token.
+    user_id: int
+        The user ID used to generate the token.
+
+    Returns
+    -------
+    str
+        The resulting token generated by the API.
+
+    Raises
+    ------
+    XTMCloudException
+        If the credentials provided were invalid.
+
+    """
+    request_body = json.dumps({
+        'client': username,
+        'password': password,
+        'userId': user_id,
+    })
+
+    url = _BASE_URL + 'auth/token'
+
+    headers = {'content-type': 'application/json'}
+
+    response = requests.post(url, data=request_body, headers=headers)
+
+    if response.status_code == 200:
+        return json.loads(response.text)['token'].encode()
+
+    raise XTMCloudException(response.status_code,
+                            response.text.encode('utf-8'),
+                            'generating token')