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api.py
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api.py
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from flask import Flask, request
from flask_restful import Resource, Api
import urllib.parse
import requests
from subprocess import call
from requests.auth import HTTPBasicAuth
import json
from flask_cors import CORS
app = Flask(__name__)
api = Api(app)
USER="167200a9-b2cd-4ef2-90b9-e0879b0e0a96"
PASSWORD="frO10ZyEGSig"
TMP_FILENAME = "test.wav"
ORION_SERVER_PRIVATE = "192.168.4.230"
ORION_SERVER_PUBLIC = "84.89.60.4"
ORION_SERVER=ORION_SERVER_PUBLIC
ORION_PORT = 80
registered_entities = {
'bressol': {
'aliases': ["cuna"],
'type': 'bebe',
'actions': {
'encen': {
'aliases': ["start", "encendre", "enceder", "enciende"],
"var": "estat",
"value": "on",
},
'para': {
'aliases': ["parar", "stop", "pause", "pausa", "pausar"],
"var": "estat",
"value": "off",
}
}
},
'computer': {
'aliases': ['ordinador', 'ordenador', 'pc'],
'type': 'computer',
'actions': {
'search': {
'aliases': ["cercar", "busca", "buscar", "cerca", "lookup"],
"var": "search",
"value": "hackathon girona 2018",
},
'play': {
'aliases': ["reprodueix", "reproduce", "reproducir", "reproduïr"],
"var": "play",
"value": "hendrix",
}
}
},
'persiana': {
'aliases': ["persianes", "persianas", "blind", "blinds"],
'type': 'blind_controller',
'actions': {
'puja': {
'aliases': ["pujar", "subir", "sube", "up"],
"var": "action",
"value": "puja",
},
'baixa': {
'aliases': ["baixar", "baja", "bajar" , "down"],
"var": "action",
"value": "baixa",
},
'para': {
'aliases': ["parar", "stop", "pause", "pausa", "pausar"],
"var": "action",
"value": "para",
}
},
},
}
class Hub(Resource):
"""
Return all configured entities and their related actions
"""
def get(self):
return registered_entities
class Fiware(Resource):
def __init__(self, host=ORION_SERVER, port=ORION_PORT):
self.host = host
self.port = port
@property
def url(self):
protocol = "http"
if self.port == 443:
protocol = "https"
return f"{protocol}://{self.host}:{self.port}"
def get(self, entity, action):
values_to_update = registered_entities[entity]['actions'][action]
entities_url = self.url + f"/v2/entities/{entity}/attrs"
payload = {
values_to_update['var']: {
'value': values_to_update['value'],
'type': "String",
}
}
r = requests.patch(entities_url, headers={'Content-Type': 'application/json'}, data=json.dumps(payload) )
if r.status_code > 399:
return {
'error': True,
'message_detail': r.text,
'message': f"Error executant acció '{action}' a '{entity}'",
'code': r.status_code
}
return {
'error': False,
'message': f"Executant acció '{action}' a '{entity}'",
'payload': payload,
}
class Voice(Resource):
"""
Process an incoming string trying to match with an entity and their possible actions
"""
def identify_entity(self, text):
for entity in registered_entities.keys():
if entity in text:
return entity
# Review defined aliases //different ways to refer this component, different langs
for alias in registered_entities[entity]['aliases']:
if alias in text:
return entity
return False
def identify_actions(self, entity, text):
for action in registered_entities[entity]['actions'].keys():
if action in text:
return action
# Review defined aliases //different ways to refer this component, different langs
for alias in registered_entities[entity]['actions'][action]['aliases']:
if alias in text:
return action
return False
def process_voice(self, text):
# Try to match the entity
text = text.split(" ")
the_entity = self.identify_entity(text)
# Try to match the action and notify fiware
message = "Entity not found"
if the_entity:
the_action = self.identify_actions(the_entity, text)
if the_action:
fiware = Fiware()
return fiware.get(the_entity, the_action)
message = "Action not found"
return {
'error': True,
'message': message,
}
def get(self, text):
return self.process_voice(text)
class Speech(Resource):
"""
Ask watson to reach a wav file with the provided text
"""
def get(self, text):
URL = "https://stream.watsonplatform.net/text-to-speech/api/v1/synthesize?accept=audio/wav&text={}&voice=es-ES_EnriqueVoice".format(urllib.parse.quote_plus(text))
r = requests.get(URL, stream=True, auth=HTTPBasicAuth(USER, PASSWORD))
open(TMP_FILENAME, 'wb').write(r.content)
call(['aplay', TMP_FILENAME])
return {
'text': text,
'URL': URL,
'status': True,
}
api.add_resource(Hub, '/hub/')
api.add_resource(Voice, '/voice/<string:text>')
api.add_resource(Fiware, '/fiware/<string:entity>/<string:action>')
api.add_resource(Speech, '/speech/<string:text>')
if __name__ == '__main__':
CORS(app)
app.run(debug=True, host="0.0.0.0")