# Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file 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.
from botocore.exceptions import DataNotFoundError
from botocore.docs.client import ClientDocumenter
from botocore.docs.client import ClientExceptionsDocumenter
from botocore.docs.waiter import WaiterDocumenter
from botocore.docs.paginator import PaginatorDocumenter
from botocore.docs.bcdoc.restdoc import DocumentStructure


class ServiceDocumenter(object):
    def __init__(self, service_name, session):
        self._session = session
        self._service_name = service_name

        self._client = self._session.create_client(
            service_name, region_name='us-east-1', aws_access_key_id='foo',
            aws_secret_access_key='bar')
        self._event_emitter = self._client.meta.events

        self.sections = [
            'title',
            'table-of-contents',
            'client-api',
            'client-exceptions',
            'paginator-api',
            'waiter-api'
        ]

    def document_service(self):
        """Documents an entire service.

        :returns: The reStructured text of the documented service.
        """
        doc_structure = DocumentStructure(
            self._service_name, section_names=self.sections,
            target='html')
        self.title(doc_structure.get_section('title'))
        self.table_of_contents(doc_structure.get_section('table-of-contents'))
        self.client_api(doc_structure.get_section('client-api'))
        self.client_exceptions(doc_structure.get_section('client-exceptions'))
        self.paginator_api(doc_structure.get_section('paginator-api'))
        self.waiter_api(doc_structure.get_section('waiter-api'))
        return doc_structure.flush_structure()

    def title(self, section):
        section.style.h1(self._client.__class__.__name__)
        self._event_emitter.emit(
            'docs.%s.%s' % ('title',
                            self._service_name),
            section=section
        )

    def table_of_contents(self, section):
        section.style.table_of_contents(title='Table of Contents', depth=2)

    def client_api(self, section):
        examples = None
        try:
            examples = self.get_examples(self._service_name)
        except DataNotFoundError:
            pass

        ClientDocumenter(self._client, examples).document_client(section)

    def client_exceptions(self, section):
        ClientExceptionsDocumenter(self._client).document_exceptions(section)

    def paginator_api(self, section):
        try:
            service_paginator_model = self._session.get_paginator_model(
                self._service_name)
        except DataNotFoundError:
            return
        paginator_documenter = PaginatorDocumenter(
            self._client, service_paginator_model)
        paginator_documenter.document_paginators(section)

    def waiter_api(self, section):
        if self._client.waiter_names:
            service_waiter_model = self._session.get_waiter_model(
                self._service_name)
            waiter_documenter = WaiterDocumenter(
                self._client, service_waiter_model)
            waiter_documenter.document_waiters(section)

    def get_examples(self, service_name, api_version=None):
        loader = self._session.get_component('data_loader')
        examples = loader.load_service_model(
            service_name, 'examples-1', api_version)
        return examples['examples']