= [[https://is.muni.cz/auth/predmet/fi/pv277|PV277 Programming Applications for Social Robots]] =

[[PageOutline(2-3)]]

== How to get info from web?

Remember that Python usage in Pepper robots is limited to Python 2 and old versions of packages. It is possible to install some (small) Python packages via `pip --user` to `/home/nao` but the space is limited.

If you want to test without the real robot, you can run the Python code (in or outside Choregraphe) using the virtual robot - see [wiki:en/ProgrammingRobotsCourse/GettingWwwInfo#Testingaservicewithvirtualrobot below].

=== Use API
If API exists, you can usually use JSON data after send the right parameters. Example to get weather data.

{{{#!python
import requests
url = "http://api.openweathermap.org/data/2.5/weather"

params = {'q': 'Brno',
          'units': 'metric',
          'lang': 'cz'}

r = requests.get(url=url, params=params)
data = r.json()

print(data['main']['temp'])
}}}

(Full example [raw-attachment:forecast.py:wiki:en/ProgrammingRobotsCourse/GettingWwwInfo forecast.py]
)

=== Parse webpage data

If no API is provided, you can download and parse the webpage.

{{{#!python
from bs4 import BeautifulSoup
import requests
page = requests.get(url).text
soup = BeautifulSoup(page, features="lxml")
results = soup.findAll('h2', attrs={'class':'article-title'})
}}}

(Full example [raw-attachment:news.py:wiki:en/ProgrammingRobotsCourse/GettingWwwInfo news.py])

== How to integrate info with robot?

There are 2 basic options:
1. use simple dialog variables as input and say the results directly in the Python script
2. use complex service (=a separate Python class/script) which fully integrates in the Pepper API

These options are detailed below.

=== Option 1 - Dialog variables

In dialog file, set value of variable, use it in Python script in behavior.

{{{
concept:(team) [sparta spartě slavie slavii]
u:(["Můj [oblíbený nejoblíbenější] tým je" "Fandím {týmu}"] _~team) $team=$1
}}}

First word after sentence is available in {{{$1}}} and passed to the script as {{{team}}} variable.

{{{#!python
def onInput_onStart(self, team):
    self.team_usr = team
}}}

=== Use TTS in script
{{{#!python
veta = self.team_name + " má " + str(act_team.points) + " bodů"
self.tts.say(veta)
}}}

=== Option 2 - Run script as service and parse service output

Specify service script in manifest.xml:
{{{#!xml
<services>
    <service autorun="true" execStart="/usr/bin/python2 scripts/rozvrh.py" name="rozvrh" />
</services>
}}}

In dialog, detect variables, pass them to service, and parse the call result to say answer:

{{{
u:(rozvrh) Pro jakou místnost bys chtěl znát rozvrh?
    u1:({pro} {místnost učebnu} _~letter _~number) Podívám se na rozvrh pro $1 $2 ^call(Rozvrh.get_current_lesson($1, $2)) \pau=500\
    c1:(In _* teaches _* course _*) V místnosti $1 je právě $3 s vyučujícím, který se jmenuje $2.
    c1:(In _* currently _*) V místnosti $1 je právě $2
}}}

Note that in `c1:` we can use `_*` since this regular expression is matched against ''text'' from the service, not against human ''speech''. The text can be in English (or even in non-language), the answer to humans is then specified in the concrete dialog topic, e.g. in Czech. Unfortunately, the [http://doc.aldebaran.com/2-5/naoqi/interaction/dialog/dialog-syntax_full.html#call documentation] is not clear in what can and what cannot be matched by `_*` here, tests are needed with real data.

{{{u1}}} detects letter and number (concepts defined earlier in dialog) and calls {{{get_current_lesson()}}}. This function return strings, that are parsed in dialog and answer is translated to each locale.

{{{#!python
def get_current_lesson(self, letter, number):
    room = letter+str(number)
    lesson = self.rozvrh.find_current_lesson(room)
    if lesson:
        if lesson.teacher:
            teacher = lesson.teacher.split(' ')[-1]
            return "In %s teaches %s course %s" % (lesson.room, teacher, lesson.name)
         else:
            return "In %s currently %s" % (lesson.room, lesson.name)
}}}


=== Run script as service and use TTS in script

Detect variables in dialog, pass them to script and let script use TTS to say answer.

{{{
u:("[řekni ukaž zobraz najdi] {mi} [odjezdy spoje] ze zastávky _~station_name")
    ^call(DialogKordisbot.say_answer1($1))
}}}

Dialog detects word with station name and calls {{{say_answer1()}}}. No answer is passed back, answer is said directly in script.

{{{#!python
def say_answer1(self, station):
    #get data finalDepartures
    answer_msg = "First line {} goes to {} at {}, second line {} goes to {} at {}, third line {} goes to {} at {}".format(finalDepartures[0][0], finalDepartures[0][1], finalDepartures[0][2], finalDepartures[1][0], finalDepartures[1][1], finalDepartures[1][2], finalDepartures[2][0], finalDepartures[2][1], finalDepartures[2][2])

    self.s.ALAnimatedSpeech.say(answer_msg)
}}}

=== Testing a service with virtual robot

A service can be tested in the virtual robot settings.

* prepare an app with the service to test - you may start with the examples below or use the ''templater'' tool [https://github.com/pepperhacking/robot-jumpstarter#template-python-service robot-jumpstarter] (use a ''new name'' for your service):
  {{{
ssh aurora
cd /nlp/projekty/pepper/web/robot-jumpstarter
python jumpstart.py python-service tweety-service TweetyService
cp -a output/tweety-service ~/pepper/
}}}
  Here `tweety-service` is the directory name of the application (and the app name), `TweetyService` is the API name of your service as it will be called from Python.[[br]]
* copy the directory with the service app (e.g. `~/pepper/tweety-service`) to your computer, where you run Choregraphe. All the following steps are done on this computer, ''not remotely'' via SSH.
* start Choregraphe and [wiki:/en/ProgrammingRobotsCourse/Introduction#virtualrobot run the virtual robot]
* find out the ''port number'' of your virtual robot: click [[Image(pepper_connect.png, valign=top)]] [[br]]
  and remember the `IP` and `port` from the table:[[br]]
  [[Image(pepper_virtual_port.png)]][[br]]
  Here the virtual robot's address is `localhost:34121`
* run your service in the virtual robot (Choregraphe must still be running, of course):
  {{{
cd ~/pepper/tweety-service/app
python scripts/tweetyservice.py --qi-url localhost:34121
}}}
  The output should look like:
  {{{
[I] 1584373059.579170 4749 qimessaging.session: Session listener created on tcp://0.0.0.0:0
[I] 1584373059.579385 4749 qimessaging.transportserver: TransportServer will listen on: tcp://192.168.1.2:36873
[I] 1584373059.579394 4749 qimessaging.transportserver: TransportServer will listen on: tcp://127.0.0.1:36873
}}}
* now you can ''communicate'' with your running service in the same way as with all other API services on the real robot:
  * use `^call(TweetyService.get())` in a dialog
  * direct call in a Python Box code:
    {{{#!python
def __init__(self):
   self.tweety = ALProxy('TweetyService')

def onInput_onStart(self):
    self.tts.say("číslo {}".format(self.tweety.get()))
    self.onStopped() #activate the output of the box
}}}
  * use the [http://doc.aldebaran.com/2-5/dev/libqi/guide/qicli.html qicli] command line tool:
    {{{
alias qicli='"/opt/Softbank Robotics/Choregraphe Suite 2.5/bin/qicli" --qi-url localhost:34121'
qicli info TweetyService
call TweetyService.get
call TweetyService.set 2
call TweetyService.get
}}}
    with the output
    {{{
099 [TweetyService]
  * Info:
   machine   f883b92e-3a87-44e5-aa70-4a3b78f4d937
   process   4749
   endpoints tcp://192.168.1.2:36873
             tcp://127.0.0.1:36873
  * Methods:
   100 get   Int8 ()
   101 reset Void ()
   102 set   Void (Int8)
   103 stop  Void ()
-------------------------------------------------------
0
null
2
}}}

== Examples

Explore example applications in {{{/nlp/projekty/pepper/myapps}}}: 
 * kordisbot
 * sport_bot
 * rozvrh

== Example app

This application implements the option 1 of the two integration solutions mentioned [wiki:en/ProgrammingRobotsCourse/GettingWwwInfo#Howtointegrateinfowithrobot above], i.e. it does not use a ''service'', just simple dialog variables with standard Choregraphe box flow.

 * Create new project in Choregraphe.
 * As usual, add `Czech` in project Properties.
 * Add `Set Language` box and select {{{Czech}}}.
 * Right click the free area -> `Create a new box` -> `Dialog...`
 * in the Dialog -> `Add Topic` - choose `Czech` and `Add to the package content as collaborative dialog` (allows to start the dialog just by talking to the robot)
 * Connect `onStart` -> `Set Language` -> `Dialog`
 * Right click dialog box -> `Edit box`. Find `Outputs` and click on `+` button. `Name`: country, `Type`: string, `Nature`: punctual
        [[Image(dialoginputs.png)]]
 * In Project files double click on `virustat_czc.top` and enter
   {{{
topic: ~virustat()
language: czc

u:(ahoj) ahoj, pro který stát tě zajímá statistika?
    u1:(Česko) dobrá, česko $country=Czechia
    u1:(Německo) dobrá, německo $country=Germany
}}}
 * Value of variable `$country` will be sent to the output named `country`.
 * Right click the free area -> `Create a new box` -> `Python...`
 * Find `Inputs` and click on the Edit icon next to `onStart`. set `Type` to String.
 * Find `Outputs` and click on `+` button. `Name`: returnStat, `Type`: string, `Nature`: punctual
 * Connect `country` output of the dialog with `onStart` input of the Python script.
 * Add `Say Text` box and connect `returnStat` output of the Python script with `onStart` input of `Say Text` box.
 * Connect `onStopped` output of `Say Text` box with `onStopped`.
        [[Image(statapp.png)]]
 * Double-click the Python script to edit the script, and exchange autogenerated script with the following:
   {{{#!python
class MyClass(GeneratedClass):
    def __init__(self):
        GeneratedClass.__init__(self)

    def onLoad(self):
        #put initialization code here
        pass

    def onUnload(self):
        #put clean-up code here
        pass

    def onInput_onStart(self, country):
        #self.onStopped() #activate the output of the box
        self.logger.info("start")
        self.logger.info(self.getStat(country))
        self.returnStat(self.getStat(country))

    def onInput_onStop(self):
        self.onUnload() #it is recommended to reuse the clean-up as the box is stopped
        self.onStopped() #activate the output of the box

    def getStat(self, country):
        import urllib2
        url = 'https://opendata.arcgis.com/datasets/bbb2e4f589ba40d692fab712ae37b9ac_2.csv'
        response = urllib2.urlopen(url)
        csv = response.read()
        for line in csv.splitlines():
            data = line.split(',')
            if data[3] == country:
                return 'Počet nakažených je '+data[7]
}}}
 * Download the sample application ([raw-attachment:virustat.zip:wiki:en/ProgrammingRobotsCourse/GettingWwwInfo virustat.zip]), unzip it and open in Choregraphe.