#!/usr/bin/env python
import os
import sys

CURDIR = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(0, os.path.join(CURDIR, 'helpers'))

from client import client, prompt, end_of_block
from httpclient import client as http_client

log = None
# uncomment the line below for debugging
#log=sys.stdout

with client(name='client1>', log=log) as client1:
    client1.expect(prompt)

    client1.send('SET allow_experimental_live_view = 1')
    client1.expect(prompt)

    client1.send('DROP TABLE IF EXISTS test.lv')
    client1.expect(prompt)
    client1.send(' DROP TABLE IF EXISTS test.mt')
    client1.expect(prompt)
    client1.send('CREATE TABLE test.mt (a Int32) Engine=MergeTree order by tuple()')
    client1.expect(prompt)
    client1.send('CREATE LIVE VIEW test.lv AS SELECT sum(a) FROM test.mt')
    client1.expect(prompt)

    with http_client({'method':'GET', 'url':'/?allow_experimental_live_view=1&live_view_heartbeat_interval=1&query=WATCH%20test.lv%20FORMAT%20JSONEachRowWithProgress'}, name='client2>', log=log) as client2:
        client2.expect('"progress".*',)
        client2.expect('{"row":{"sum(a)":"0","_version":"1"}}\n', escape=True)
        client2.expect('"progress".*\n')
        # heartbeat is provided by progress message
        client2.expect('"progress".*\n')

        client1.send('INSERT INTO test.mt VALUES (1),(2),(3)')
        client1.expect(prompt)

        client2.expect('"progress".*"read_rows":"2".*\n')
        client2.expect('{"row":{"sum(a)":"6","_version":"2"}}\n', escape=True)

    client1.send('DROP TABLE test.lv')
    client1.expect(prompt)
    client1.send('DROP TABLE test.mt')
    client1.expect(prompt)