from datetime import datetime

from flask import redirect, url_for
from flask.views import MethodView

from ..app import Application
from ..config import APISettings
from ..models.interface import ApiVersionGet, HealthGet, HealthStatus, OpenAPIGet
from . import interface_routes as blp

APP = Application.get_instance()

@blp.route("/health")
class ApiVersion(MethodView):
    @blp.doc(summary="Returns the status and alive-time of the server")
    @blp.response(200, HealthGet, description="Successful operation")
    def get(self):
        response = {
            "alive_since": datetime.strftime(APP.alive_since, "%d.%m.%Y %H:%M:%S"),
            "alive_for": str(datetime.now() - APP.alive_since),
            "status": HealthStatus.OK
        }
        return response

@blp.route("/openapi")
class ApiVersion(MethodView):
    @blp.doc(summary="Get the OpenAPI spec as a JSON.")
    @blp.response(200, OpenAPIGet, description="Successful operation")
    def get(self):
        return redirect(url_for('api-docs.openapi_json'))

@blp.route("/version")
class ApiVersion(MethodView):
    @blp.doc(summary="Get the REST interface version identification.")
    @blp.response(200, ApiVersionGet, description="Successful operation")
    def get(self):
        return { "version": APISettings.API_VERSION }