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tidetimes.py
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tidetimes.py
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from datetime import datetime, time
from flask import Flask
from flask_ask import Ask, statement, question, session
from bs4 import BeautifulSoup
import urllib
import json
import time
import requests
import time
import unidecode
def convert12H(time24):
time12 = datetime.strptime(time24, "%H:%M")
time12 = time12.strftime("%I:%M %p")
return time12
def parseTides(action):
# Set variables
time12h = time.strftime("%I:%M %p")
time24h = time.strptime(time12h, '%I:%M %p')
currenttime = time.strftime('%H:%M', time24h) # failed when time was 07:49
end_ofday = 0
next_tidetime = ""
next_tidetype = ""
next_tide_msg = ""
current_tidetype = ""
current_tidetime = ""
current_tide_msg = ""
next_hightidetime = ""
next_lowtidetime = ""
next_hightide_msg = ""
next_lowtide_msg = ""
# Get latest tide times from web
tides = []
# Read tide times in to variables to use later - note can pass a date on end of url like ..tide-times-20170918
soup = BeautifulSoup(urllib.request.urlopen('https://www.tidetimes.org.uk/<YOUR RIVER HERE').read(), 'html5lib')
tableState = soup.find("table", {"id": "tidetimes"})
for row in tableState.findAll('tr')[2:]:
col = row.findAll('td')
try:
tideType = col[0].string.strip()
if (tideType == "High Tide") :
tideTime = col[1].string.strip()
tides.append(tideTime + "#" + "high")
if (tideType == "Low Tide") :
tideTime = col[1].string.strip()
tides.append(tideTime + "#" + "low")
except Exception as e:
pass
tideslen = len(tides)
# New code for next high/low tide
for tide in tides:
tideindex = tides.index(tide)
t = tide.split('#', 1)
tidetime = t[0]
tidetype = t[1]
t = datetime.strptime(tidetime, '%H:%M')
c = datetime.strptime(currenttime, '%H:%M')
if t > c:
if tidetype == "low":
next_lowtidetime = tidetime
next_lowtide_msg = "The next low tide is at " + convert12H(next_lowtidetime)
else:
next_hightidetime = tidetime
next_hightide_msg = "The next high tide is at " + convert12H(next_hightidetime)
# Get current and next tides
for tide in tides:
tideindex = tides.index(tide)
t = tide.split('#', 1)
tidetime = t[0]
tidetype = t[1]
t = datetime.strptime(tidetime, '%H:%M')
c = datetime.strptime(currenttime, '%H:%M')
if t > c:
msg = "The next tide is "
next_tidetime = tidetime
next_tidetype = tidetype
next_tide_msg = msg + next_tidetype + " at " + next_tidetime
# get current tide
if tideindex > 1:
ct = tides[tideindex - 1]
ct = ct.split('#', 1)
current_tidetime = ct[0]
current_tidetype = ct[1]
if current_tidetype == "low":
current_tide_msg = current_tidetype + " tide was at " + convert12H(current_tidetime) + ", .. so the tide is on the way in and will reach high tide by " + convert12H(next_tidetime)
else:
current_tide_msg = current_tidetype + " tide was at " + convert12H(current_tidetime) + ", .. so the tide is on the way out and will reach low tide by " + convert12H(next_tidetime)
else:
# we have to go by state of current tide to work out last one, no time available
if next_tidetype == "low":
current_tidetype = "high"
current_tidetime = ""
msg = "the last tide was high, .. so it is now on the way out and will reach low tide by " + convert12H(next_tidetime)
else:
current_tidetype = "low"
current_tidetime = ""
msg = "the last tide was low, .. so it is now on the way in and will reach high tide by " + convert12H(next_tidetime)
current_tide_msg = msg
break
# Check we have a tide details
# if tideindex == tideslen -1 :
# lt = tides[tideslen - 1]
# lt = lt.split('#', 1)
# last_tidetime = lt[0]
# last_tidetype = lt[1]
# if last_tidetype == "low":
# msg = "the tide was " + last_tidetype + " at " + convert12H(last_tidetime) + ", .. so is now on the way in and will reach high tide in the morning."
# else:
# msg = "the tide was " + last_tidetype + " at " + convert12H(last_tidetime) + ", .. so is now on the way out and will reach low tide in the morning."
# current_tide_msg = msg
# Check we have values for next low and high tide
if next_lowtidetime == "":
next_lowtide_msg = "There are no further low tides today, " + current_tide_msg
if next_hightidetime == "":
next_hightide_msg = "There are no further high tides today, " + current_tide_msg
# no more tides today so populate variables accordingly
if next_tidetime == "":
end_ofday = 1
if end_ofday == 1:
msg = "There are no further tides today however the tide was "
lt = tides[tideslen - 1]
lt = lt.split('#', 1)
last_tidetime = lt[0]
last_tidetype = lt[1]
if last_tidetype == "high":
next_tide_msg = msg + last_tidetype + " at " + convert12H(last_tidetime) + ", .. so it is now on the way out"
else:
next_tide_msg = msg + last_tidetype + " at " + convert12H(last_tidetime) + ", .. so it is now on the way in"
# Return the relevant details requested by calling function
if action == "next":
return next_tide_msg
if action == "status":
return current_tide_msg
if action == "high":
return next_hightide_msg
if action == "low":
return next_lowtide_msg
# END OF CODE!
# Use below to debug
#action = "status"
#tideinfo = parseTides(action)
#print(tideinfo)
#exit(1)
app = Flask(__name__)
ask = Ask(app, "/tides")
@app.route('/', methods=['GET', 'POST'])
def homepage():
return "hi there, how ya doin?"
@ask.launch
def start_skill():
welcome_message = 'Hello, please invoke me by saying alexa ... ask the river .. when is high tide, or when is low tide, you can even just ask what its doing, to know the details of the current tide'
return statement(welcome_message)
@ask.intent("TideIntent", mapping={'tide': 'TideState'})
def announceTides(tide):
if tide == "high":
action = "high"
tideinfo = parseTides(action)
if tide == "low":
action = "low"
tideinfo = parseTides(action)
return statement('{}'.format(tideinfo))
@ask.intent("CurrentState")
def CurrentState():
action = "state"
tideinfo = parseTides(action)
return statement('{}'.format(tideinfo))
if __name__ == '__main__':
app.run(host='0.0.0.0')