#!/usr/bin/env python3
# -*- coding: utf-8 -*-


from flask_restx import Resource, Namespace
from flask import Blueprint, Flask
from flask_restx import Api, fields, Model

### models.py contain models for data validation ###
# just a simple model
MyTest = Model('MyTest', {
    'data': fields.String(required=True,readonly=True),
})

### namespaces.py contains definition of routes
namesp = Namespace(name="tests", validate=True)
# register model
namesp.models[MyTest.name] = MyTest
@namesp.route('/<string:message>')
class get_session(Resource):

    def __init__(self, api=None, *args, **kwargs):
        # sessions is a black box dependency
        self.answer_service = kwargs['answer_service']
        super().__init__(api,*args, **kwargs)

    @namesp.marshal_with(MyTest)
    def get(self, message):
        # ducktyping
        # any used answer_service must implement this method somehow
        return self.answer_service.answer(message)


### managers.py contain logic what should happen on request ###

# loosly coupled and independent from communication
# could be implemented with database, log file what so ever
class AnswerService:
    def __init__(self,msg):
        self.msg=msg
    def answer(self, request:str):
        return {'data': request+self.msg}

#### main.py ###
blueprint = Blueprint("api", __name__, url_prefix="/api/v1")

api = Api(
    blueprint,
    version="1.0",
    doc="/ui",
    validate=False,
)

# main glues communication and managers together
ans= AnswerService('~nice to meet you')
injected_objects={'answer_service': ans}

### could also be defined without namespace ###
#api.models[MyTest.name] = MyTest
#api.add_resource(get_session, '/answer',
#    resource_class_kwargs=injected_objects)


# inject the objects containing logic here
for res in namesp.resources:
    res.kwargs['resource_class_kwargs'] = injected_objects
    print(res)
# finally add namespace to api
api.add_namespace(namesp)

app = Flask('test')
from flask import redirect
@app.route('/', methods=['POST', 'GET'])
def home():
    return redirect('/api/v1/ui')

app.register_blueprint(blueprint)
app.run(debug=False, port=8002)