101 lines
2.8 KiB
Lua
101 lines
2.8 KiB
Lua
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-- Implement a command !time [area] which uses
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-- 2 Google APIs to get the desired result:
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-- 1. Geocoding to get from area to a lat/long pair
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-- 2. Timezone to get the local time in that lat/long location
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-- Globals
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-- If you have a google api key for the geocoding/timezone api
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api_key = nil
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base_api = "https://maps.googleapis.com/maps/api"
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dateFormat = "%A %d %B - %H:%M:%S"
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-- Need the utc time for the google api
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function utctime()
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return os.time(os.date("!*t"))
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end
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-- Use the geocoding api to get the lattitude and longitude with accuracy specifier
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-- CHECKME: this seems to work without a key??
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function get_latlong(area)
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local api = base_api .. "/geocode/json?"
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local parameters = "address=".. (URL.escape(area) or "")
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if api_key ~= nil then
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parameters = parameters .. "&key="..api_key
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end
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-- Do the request
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local res, code = https.request(api..parameters)
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if code ~=200 then return nil end
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local data = json:decode(res)
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if (data.status == "ZERO_RESULTS") then
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return nil
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end
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if (data.status == "OK") then
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-- Get the data
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lat = data.results[1].geometry.location.lat
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lng = data.results[1].geometry.location.lng
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acc = data.results[1].geometry.location_type
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types= data.results[1].types
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return lat,lng,acc,types
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end
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end
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-- Use timezone api to get the time in the lat,
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-- Note: this needs an API key
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function get_time(lat,lng)
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local api = base_api .. "/timezone/json?"
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-- Get a timestamp (server time is relevant here)
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local timestamp = utctime()
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local parameters = "location=" ..
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URL.escape(lat) .. "," ..
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URL.escape(lng) ..
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"×tamp="..URL.escape(timestamp)
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if api_key ~=nil then
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parameters = parameters .. "&key="..api_key
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end
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local res,code = https.request(api..parameters)
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if code ~= 200 then return nil end
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local data = json:decode(res)
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if (data.status == "ZERO_RESULTS") then
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return nil
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end
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if (data.status == "OK") then
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-- Construct what we want
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-- The local time in the location is:
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-- timestamp + rawOffset + dstOffset
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local localTime = timestamp + data.rawOffset + data.dstOffset
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return localTime, data.timeZoneId
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end
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return localTime
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end
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function getformattedLocalTime(area)
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if area == nil then
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return "The time in nowhere is never"
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end
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lat,lng,acc = get_latlong(area)
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if lat == nil and lng == nil then
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return 'It seems that in "'..area..'" they do not have a concept of time.'
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end
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local localTime, timeZoneId = get_time(lat,lng)
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return "The local time in "..timeZoneId.." is: ".. os.date(dateFormat,localTime)
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end
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function run(msg, matches)
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return getformattedLocalTime(matches[1])
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end
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return {
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description = "Displays the local time in an area",
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usage = "!time [area]: Displays the local time in that area",
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patterns = {"^!time (.*)$"},
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run = run
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}
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