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

# Copyright(C) 2017      Vincent Ardisson
#
# This file is part of a weboob module.
#
# This weboob module is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This weboob module 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this weboob module. If not, see <http://www.gnu.org/licenses/>.

from __future__ import unicode_literals

import time

from weboob.browser.browsers import APIBrowser
from weboob.browser.exceptions import ClientError
from weboob.capabilities.base import NotAvailable
from weboob.capabilities.bugtracker import User, Project, Issue, Status, Update
from weboob.exceptions import BrowserIncorrectPassword
from dateutil.parser import parse as parse_date


class AsanaBrowser(APIBrowser):
    BASEURL = 'https://app.asana.com/api/1.0/'

    STATUS_OPEN = Status(0, 'Open', Status.VALUE_NEW)
    STATUS_CLOSED = Status(1, 'Closed', Status.VALUE_RESOLVED)

    def __init__(self, token, *args, **kwargs):
        super(AsanaBrowser, self).__init__(*args, **kwargs)
        self.token = token
        self.session.headers['Authorization'] = 'Bearer %s' % token

    def open(self, *args, **kwargs):
        try:
            return super(AsanaBrowser, self).open(*args, **kwargs)
        except ClientError as e:
            if e.response.status_code == 401:
                raise BrowserIncorrectPassword()
            elif e.response.status_code == 429:
                self.logger.warning('reached requests quota...')
                waiting = int(e.response.headers['Retry-After'])
                if waiting <= 60:
                    self.logger.warning('waiting %s seconds', waiting)
                    time.sleep(waiting)
                    return super(AsanaBrowser, self).open(*args, **kwargs)
                else:
                    self.logger.warning('not waiting %s seconds, just fuck it', waiting)

            raise

    def _make_user(self, data):
        u = User(data['id'], None)
        if 'name' in data:
            u.name = data['name']
        return u

    def _make_project(self, data):
        p = Project(str(data['id']), data['name'])
        p.url = 'https://app.asana.com/0/%s' % p.id
        if 'members' in data:
            p.members = [self._make_user(u) for u in data['members']]

        p.statuses = [self.STATUS_OPEN, self.STATUS_CLOSED]
        p._workspace = data['workspace']['id']

        # these fields don't exist in asana
        p.priorities = []
        p.versions = []
        return p

    def _make_issue(self, data):
        if data['name'].endswith(':'):
            # section, not task
            return None

        i = Issue(str(data['id']))
        i.url = 'https://app.asana.com/0/0/%s/f' % i.id
        i.title = data['name']
        if 'notes' in data:
            i.body = data['notes']
        if data.get('assignee'):
            i.assignee = self._make_user(data['assignee'])
        if data.get('created_by'):
            # created_by is not documented
            i.author = self._make_user(data['created_by'])
        if 'created_at' in data:
            i.creation = parse_date(data['created_at'])
        if 'modified_at' in data:
            i.updated = parse_date(data['modified_at'])
        if 'due_at' in data:
            if data['due_at']:
                i.due = parse_date(data['due_at'])
            else:
                i.due = NotAvailable
        if 'due_on' in data:
            if data['due_on']:
                i.due = parse_date(data['due_on'])
            else:
                i.due = NotAvailable
        if data.get('projects'):
            i.project = self._make_project(data['projects'][0])
        if 'completed' in data:
            i.status = self.STATUS_CLOSED if data['completed'] else self.STATUS_OPEN
        if 'custom_fields' in data:
            def get(d):
                for k in ('string_value', 'number_value', 'enum_value', 'text_value'):
                    if k in d:
                        return d[k]
                assert False, 'custom type not handled'
            i.fields = {d['name']: get(d) for d in data['custom_fields']}
        if 'tags' in data:
            i.tags = [d['name'] for d in data['tags']]
        if data.get('memberships') and data['memberships'][0]['section']:
            i.category = data['memberships'][0]['section']['name']

        i.version = NotAvailable
        i.priority = NotAvailable
        return i

    def _make_update(self, data):
        u = Update(str(data['id']))
        if 'created_at' in data:
            u.date = parse_date(data['created_at'])
        u.message = '%s: %s' % (data['type'], data['text'])
        if 'created_by' in data:
            u.author = self._make_user(data['created_by'])
        return u

    def paginate(self, *args, **kwargs):
        params = kwargs.setdefault('params', {})
        params['limit'] = 20
        reply = self.request(*args, **kwargs)
        for d in reply['data']:
            yield d
        while reply.get('next_page') and reply['next_page'].get('uri'):
            reply = self.request(reply['next_page']['uri'])
            for d in reply['data']:
                yield d