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pivasam

Member

From: Cannes FR

Registered: 2021-03-30

Posts: 1

Lua weather script for SSUI conky

Hello,

I have a problem running a weather.lua script which gives me the following error:

modules/weather/scripts/fetch-weather.lua:71: attempt to index a nil value (field 'main')

And here is the script:

#!/usr/bin/lua

-- Original script source: https://gist.github.com/meskarune/5729e8d6c8428e9c70a72bed475db4e1

-- load the http socket module
http = require("socket.http")
-- load the json module
json = require("json")
-- load config module
config = require("config")

api_url = "http://api.openweathermap.org/data/2.5/weather?"

-- http://openweathermap.org/help/city_list.txt , http://openweathermap.org/find
cityid = config.weather.city_id

-- metric or imperial
cf = config.weather.unit

-- get an open weather map api key: http://openweathermap.org/appid
apikey = config.weather.api_key

-- measure is °C if metric and °F if imperial
measure = '°' .. (cf == 'metric' and 'C' or 'F')

cache_file = "weather.json"

currenttime = os.date("!%Y%m%d%H%M%S")

file_exists = function (name)
    f=io.open(name,"r")
    if f~=nil then
        io.close(f)
        return true
    else
        return false
    end
end

if file_exists(cache_file) then
    cache = io.open(cache_file,"r+")
    data = json.decode(cache:read())
    timepassed = os.difftime(currenttime, data.timestamp)
else
    cache = io.open(cache_file, "w")
    timepassed = 6000
end

makecache = function (s)
    s.timestamp = currenttime
    save = json.encode(s)
    cache:write(save)
end

if timepassed < 3600 then
    response = data
else
    weather = http.request(("%sid=%s&units=%s&APPID=%s"):format(api_url, cityid, cf, apikey))
    if weather then
        response = json.decode(weather)
        makecache(response)
    else
        response = data
    end
end

math.round = function (n)
    return math.floor(n + 0.5)
end

temp = response.main.temp   <------- line 71
conditions = response.weather[1].main
icon = response.weather[1].icon:sub(1, 2)

io.write(("${font Adele Medium:size=18}%s%s ${font}| %s\n"):format(math.round(temp), measure, conditions))

cache:close()

Thanks in advance for your help.

Sam.

Last edited by pivasam (2021-03-31 00:02:59)