"""
Copyright 2015 Hewlett-Packard

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

This product includes cryptographic software written by Eric Young
(eay@cryptsoft.com). This product includes software written by Tim
Hudson (tjh@cryptsoft.com).
========================================================================
"""

import json
import requests

import exceptions


class JobManager(object):

    def __init__(self, client):
        self.client = client
        self.endpoint = self.client.endpoint + '/v1/jobs/'

    @property
    def headers(self):
        return {'X-Auth-Token': self.client.auth_token}

    def create(self, doc, job_id=''):
        job_id = job_id or doc.get('job_id', '')
        endpoint = self.endpoint + job_id
        doc['client_id'] = doc.get('client_id', '') or self.client.client_id
        r = requests.post(endpoint,
                          data=json.dumps(doc),
                          headers=self.headers)
        if r.status_code != 201:
            raise exceptions.ApiClientException(r)
        job_id = r.json()['job_id']
        return job_id

    def delete(self, job_id):
        endpoint = self.endpoint + job_id
        r = requests.delete(endpoint, headers=self.headers)
        if r.status_code != 204:
            raise exceptions.ApiClientException(r)

    def list_all(self, limit=10, offset=0, search=None):
        data = json.dumps(search) if search else None
        query = {'limit': int(limit), 'offset': int(offset)}
        r = requests.get(self.endpoint, headers=self.headers,
                         params=query, data=data)
        if r.status_code != 200:
            raise exceptions.ApiClientException(r)
        return r.json()['jobs']

    def list(self, limit=10, offset=0, search={}, client_id=None):
        client_id = client_id or self.client.client_id
        new_search = search.copy()
        new_search['match'] = search.get('match', [])
        new_search['match'].append({'client_id': client_id})
        return self.list_all(limit, offset, new_search)

    def get(self, job_id):
        endpoint = self.endpoint + job_id
        r = requests.get(endpoint, headers=self.headers)
        if r.status_code == 200:
            return r.json()
        if r.status_code == 404:
            return None
        raise exceptions.ApiClientException(r)

    def update(self, job_id, update_doc):
        endpoint = self.endpoint + job_id
        r = requests.patch(endpoint,
                           headers=self.headers,
                           data=json.dumps(update_doc))
        if r.status_code != 200:
            raise exceptions.ApiClientException(r)
        return r.json()['version']

    def start_job(self, job_id):
        return self.update(job_id, {'job_schedule': {'event': 'start'}})

    def stop_job(self, job_id):
        return self.update(job_id, {'job_schedule': {'event': 'stop'}})

    def abort_job(self, job_id):
        return self.update(job_id, {'job_schedule': {'event': 'abort'}})