# Copyright (c) Ansible project
# Simplified BSD License (see LICENSES/BSD-2-Clause.txt or https://opensource.org/licenses/BSD-2-Clause)
# SPDX-License-Identifier: BSD-2-Clause

from __future__ import annotations

import json
import sys
import typing as t
from http import HTTPStatus

from ansible.module_utils.basic import env_fallback
from ansible.module_utils.urls import fetch_url

if t.TYPE_CHECKING:
    from ansible.module_utils.basic import AnsibleModule


def online_argument_spec() -> dict[str, t.Any]:
    return dict(
        api_token=dict(
            required=True,
            fallback=(env_fallback, ["ONLINE_TOKEN", "ONLINE_API_KEY", "ONLINE_OAUTH_TOKEN", "ONLINE_API_TOKEN"]),
            no_log=True,
            aliases=["oauth_token"],
        ),
        api_url=dict(
            fallback=(env_fallback, ["ONLINE_API_URL"]), default="https://api.online.net", aliases=["base_url"]
        ),
        api_timeout=dict(type="int", default=30, aliases=["timeout"]),
        validate_certs=dict(default=True, type="bool"),
    )


class OnlineException(Exception):
    def __init__(self, message: str) -> None:
        self.message = message


class Response:
    def __init__(self, resp, info):
        self.body = None
        if resp:
            self.body = resp.read()
        self.info = info

    @property
    def json(self):
        if not self.body:
            if "body" in self.info:
                return json.loads(self.info["body"])
            return None
        try:
            return json.loads(self.body)
        except ValueError:
            return None

    @property
    def status_code(self):
        return self.info["status"]

    @property
    def ok(self):
        return self.status_code in (
            HTTPStatus.OK,
            HTTPStatus.CREATED,
            HTTPStatus.ACCEPTED,
            HTTPStatus.NO_CONTENT,
        )


class Online:
    def __init__(self, module: AnsibleModule) -> None:
        self.module = module
        self.headers = {
            "Authorization": f"Bearer {self.module.params.get('api_token')}",
            "User-Agent": self.get_user_agent_string(module),
            "Content-type": "application/json",
        }
        self.name = None

    def get_resources(self):
        results = self.get(f"/{self.name}")
        if not results.ok:
            raise OnlineException(
                f"Error fetching {self.name} ({self.module.params.get('api_url')}/{self.name}) [{results.status_code}: {results.json['message']}]"
            )

        return results.json

    def _url_builder(self, path):
        if path[0] == "/":
            path = path[1:]
        return f"{self.module.params.get('api_url')}/{path}"

    def send(self, method, path, data=None, headers=None):
        url = self._url_builder(path)
        data = self.module.jsonify(data)

        if headers is not None:
            self.headers.update(headers)

        resp, info = fetch_url(
            self.module,
            url,
            data=data,
            headers=self.headers,
            method=method,
            timeout=self.module.params.get("api_timeout"),
        )

        # Exceptions in fetch_url may result in a status -1, the ensures a proper error to the user in all cases
        if info["status"] == -1:
            self.module.fail_json(msg=info["msg"])

        return Response(resp, info)

    @staticmethod
    def get_user_agent_string(module):
        return f"ansible {module.ansible_version} Python {sys.version.split(' ', 1)[0]}"

    def get(self, path, data=None, headers=None):
        return self.send("GET", path, data, headers)

    def put(self, path, data=None, headers=None):
        return self.send("PUT", path, data, headers)

    def post(self, path, data=None, headers=None):
        return self.send("POST", path, data, headers)

    def delete(self, path, data=None, headers=None):
        return self.send("DELETE", path, data, headers)

    def patch(self, path, data=None, headers=None):
        return self.send("PATCH", path, data, headers)

    def update(self, path, data=None, headers=None):
        return self.send("UPDATE", path, data, headers)
