# 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.

import copy
import warnings

import otc_metadata.data

__all__ = ['Services']

BUILTIN_DATA = otc_metadata.data.read_data('services.yaml')


def _normalize_type(service_type):
    if service_type:
        return service_type.replace('_', '-')


class Services(object):
    """Encapsulation of the OTC Services data
    """

    def __init__(self):
        self._service_data = BUILTIN_DATA

    def _sort_data(self):
        self._service_data['documents'] = sorted(
            self._service_data['documents'],
            key=lambda x: f"{x.get('service_type')}{x.get('title')}"
        )
        self._service_data['documents'] = sorted(
            self._service_data['documents'],
            key=lambda x: f"{x.get('service_type')}{x.get('title')}"
        )
        self._service_data['services'] = sorted(
            self._service_data['services'],
            key=lambda x: f"{x.get('service_type')}{x.get('service_title')}"
        )

    def _rewrite_data(self):
        otc_metadata.data.rewrite_data(
            "services.yaml",
            self._service_data
        )

    @property
    def all_services(self):
        "Service Categories data listing."
        return copy.deepcopy(self._service_data['services'])

    @property
    def all_docs(self):
        "Service Docs data listing."
        return copy.deepcopy(self._service_data['documents'])

    @property
    def service_dict(self):
        "Service Docs data listing."
        res = dict()
        for srv in self.all_services:
            res[srv["service_type"]] = copy.deepcopy(srv)
        return res

    @property
    def service_categories(self):
        """List services categories
        """
        res = []
        for cat in self._service_data["service_categories"]:
            res.append(copy.deepcopy(cat))
        return res

    def services_by_category(self, category):
        """List services matching category
        """
        res = []
        for srv in self.all_services:
            if srv['service_category'] == category:
                res.append(copy.deepcopy(srv))
        return res

    def services_with_docs_by_category(self, category, environment=None):
        """Retrieve service category docs data

        :param str category: Optional Category filter
        :param str env: Optional service environment. Influeces "repository"
            field
        """
        res = dict()
        services = self.service_dict
        for doc in self.all_docs:
            cat = doc["service_type"]
            service = services.get(cat)
            if not service:
                warnings.warn("No Service defition of type %s" % (cat))
                continue
            if category and service["service_category"] != category:
                continue
            res.setdefault(cat, service)
            res_doc = copy.deepcopy(doc)
            res_doc.update(**service)
            if environment:
                if "environment" in doc and doc["environment"] != environment:
                    continue
            res[cat].setdefault("docs", [])
            res[cat]["docs"].append(res_doc)
        return res

    def docs_by_service_category(self, category, environment=None):
        """List services matching category

        :param str category: Category name
        :param str env: Optional service environment. Influeces "repository"
            field
        """
        res = []
        services = self.service_dict
        for doc in self.all_docs:
            cat = doc["service_type"]
            service = services.get(cat)
            if not service:
                warnings.warn("No Service defition of type %s" % (cat))
                continue
            if service["service_category"] == category:
                res_doc = copy.deepcopy(doc)
                res_doc.update(**service)
                if environment:
                    for srv_env in service["repositories"]:
                        if srv_env.get("environment") == environment:
                            res_doc["repository"] = srv_env["repo"]
                res.append(res_doc)
        return res

    def all_docs_full(self, environment):
        """Return list or documents with full service data
        """
        services = self.service_dict
        for doc in self.all_docs:
            if not doc["service_type"] in services:
                print(f"No service type {doc['service_type']}")
                continue
            service = services[doc["service_type"]]
            res_doc = copy.deepcopy(doc)
            res_doc.update(**service)
            if environment:
                for srv_env in service["repositories"]:
                    if srv_env.get("environment") == environment:
                        res_doc["repository"] = srv_env["repo"]
                for srv_assignees in service.get("assignees", []):
                    if srv_assignees.get("environment") == environment:
                        res_doc["assignees"] = srv_assignees["names"]
            yield res_doc

    def docs_html_by_category(self, environment):
        """Generate structure for doc-exports repository

        """
        doc_struct = dict()
        services = self.service_dict
        for srv in self.all_services:
            doc_struct.setdefault(srv["service_category"], [])
            srv_res = dict(
                service_title=srv['service_title'],
                service_type=srv['service_type'],
                docs=[]
            )
            if "repositories" in srv and environment:
                for repo in srv["repositories"]:
                    if "environment" in repo and repo["environment"] == environment:
                        srv_res["repository"] = repo["repo"]
            for doc in self.all_docs:
                if (
                    "html_location" in doc
                    and doc["service_type"] == srv_res["service_type"]
                ):
                    doc_res = dict(
                        html_location=doc["html_location"],
                        rst_location=doc["rst_location"],
                        title=doc["title"],
                        pdf_name=doc["pdf_name"]
                    )
                    srv_res["docs"].append(doc_res)
            if len(srv_res["docs"]) > 0:
                doc_struct[srv["service_category"]].append(srv_res)

        return dict(categories=doc_struct)