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Mikubot/plugins/location.lua

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-- Implement a command !loc [area] which uses
-- the static map API to get a location image
-- Not sure if this is the proper way
-- Intent: get_latlong is in time.lua, we need it here
-- loadfile "time.lua"
-- Globals
-- If you have a google api key for the geocoding/timezone api
api_key = config.google_api_key or nil
base_api = "https://maps.googleapis.com/maps/api"
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function delay_s(delay)
delay = delay or 1
local time_to = os.time() + delay
while os.time() < time_to do end
end
function get_staticmap(area)
local api = base_api .. "/staticmap?"
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-- Get a sense of scale
lat,lng,acc,types = get_latlong(area)
local scale=types[1]
if scale=="locality" then zoom=8
elseif scale=="country" then zoom=4
else zoom=13 end
local parameters =
"size=600x300" ..
"&zoom=" .. zoom ..
"&center=" .. URL.escape(area) ..
"&markers=color:red"..URL.escape("|"..area)
if api_key ~=nil and api_key ~= "" then
parameters = parameters .. "&key="..api_key
end
return lat, lng, api..parameters
end
function run(msg, matches)
local receiver = get_receiver(msg)
local lat,lng,url = get_staticmap(matches[1])
local file_path = download_to_file(url)
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-- Send the actual location, is a google maps link
send_location(receiver, lat, lng, ok_cb, false)
-- Send a picture of the map, which takes scale into account
send_photo(receiver, file_path, ok_cb, false)
delay_s(2)
-- Clean up after some time
postpone(rmtmp_cb, file_path, 20.0)
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-- Return a link to the google maps stuff is now not needed anymore
return nil
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end
return {
description = "Gets information about a location, maplink and overview",
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usage = "!loc (location)",
patterns = {"^!loc (.*)$"},
run = run
}