dotfiles/awesome/lain/widget/weather.lua
2020-05-16 23:07:21 +03:00

148 lines
5.8 KiB
Lua

--[[
Licensed under GNU General Public License v2
* (c) 2015, Luca CPZ
--]]
local helpers = require("lain.helpers")
local json = require("lain.util").dkjson
local focused = require("awful.screen").focused
local naughty = require("naughty")
local wibox = require("wibox")
local math = math
local os = os
local string = string
local type = type
local tonumber = tonumber
-- OpenWeatherMap
-- current weather and X-days forecast
-- lain.widget.weather
local function factory(args)
local weather = { widget = wibox.widget.textbox() }
local args = args or {}
local APPID = args.APPID or "3e321f9414eaedbfab34983bda77a66e" -- lain's default
local timeout = args.timeout or 60 * 15 -- 15 min
local timeout_forecast = args.timeout or 60 * 60 * 24 -- 24 hrs
local current_call = args.current_call or "curl -s 'http://api.openweathermap.org/data/2.5/weather?id=%s&units=%s&lang=%s&APPID=%s'"
local forecast_call = args.forecast_call or "curl -s 'http://api.openweathermap.org/data/2.5/forecast/daily?id=%s&units=%s&lang=%s&cnt=%s&APPID=%s'"
local city_id = args.city_id or 0 -- placeholder
local units = args.units or "metric"
local lang = args.lang or "en"
local cnt = args.cnt or 5
local date_cmd = args.date_cmd or "date -u -d @%d +'%%a %%d'"
local icons_path = args.icons_path or helpers.icons_dir .. "openweathermap/"
local notification_preset = args.notification_preset or {}
local notification_text_fun = args.notification_text_fun or
function (wn)
local day = os.date("%a %d", wn["dt"])
local tmin = math.floor(wn["temp"]["min"])
local tmax = math.floor(wn["temp"]["max"])
local desc = wn["weather"][1]["description"]
return string.format("<b>%s</b>: %s, %d - %d ", day, desc, tmin, tmax)
end
local weather_na_markup = args.weather_na_markup or " N/A "
local followtag = args.followtag or false
local showpopup = args.showpopup or "on"
local settings = args.settings or function() end
weather.widget:set_markup(weather_na_markup)
weather.icon_path = icons_path .. "na.png"
weather.icon = wibox.widget.imagebox(weather.icon_path)
function weather.show(seconds)
weather.hide()
if followtag then
notification_preset.screen = focused()
end
if not weather.notification_text then
weather.update()
weather.forecast_update()
end
weather.notification = naughty.notify {
preset = notification_preset,
text = weather.notification_text,
icon = weather.icon_path,
timeout = type(seconds == "number") and seconds or notification_preset.timeout
}
end
function weather.hide()
if weather.notification then
naughty.destroy(weather.notification)
weather.notification = nil
end
end
function weather.attach(obj)
obj:connect_signal("mouse::enter", function()
weather.show(0)
end)
obj:connect_signal("mouse::leave", function()
weather.hide()
end)
end
function weather.forecast_update()
local cmd = string.format(forecast_call, city_id, units, lang, cnt, APPID)
helpers.async(cmd, function(f)
local pos, err
weather_now, pos, err = json.decode(f, 1, nil)
if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then
weather.notification_text = ""
for i = 1, weather_now["cnt"] do
weather.notification_text = weather.notification_text ..
notification_text_fun(weather_now["list"][i])
if i < weather_now["cnt"] then
weather.notification_text = weather.notification_text .. "\n"
end
end
end
end)
end
function weather.update()
local cmd = string.format(current_call, city_id, units, lang, APPID)
helpers.async(cmd, function(f)
local pos, err, icon
weather_now, pos, err = json.decode(f, 1, nil)
if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then
local sunrise = tonumber(weather_now["sys"]["sunrise"])
local sunset = tonumber(weather_now["sys"]["sunset"])
local icon = weather_now["weather"][1]["icon"]
local loc_now = os.time()
if sunrise <= loc_now and loc_now <= sunset then
icon = string.gsub(icon, "n", "d")
else
icon = string.gsub(icon, "d", "n")
end
weather.icon_path = icons_path .. icon .. ".png"
widget = weather.widget
settings()
else
weather.icon_path = icons_path .. "na.png"
weather.widget:set_markup(weather_na_markup)
end
weather.icon:set_image(weather.icon_path)
end)
end
if showpopup == "on" then weather.attach(weather.widget) end
weather.timer = helpers.newtimer("weather-" .. city_id, timeout, weather.update, false, true)
weather.timer_forecast = helpers.newtimer("weather_forecast-" .. city_id, timeout, weather.forecast_update, false, true)
return weather
end
return factory